vendor: update sqlite to fix "database is locked" errors (#2116)
closes #2040
upstream commit: acfa601240
This commit is contained in:
Andrey Nering
Lunny Xiao
parent
a52cd59727
commit
2ef33b5338
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@ -1,9 +1,10 @@
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go-sqlite3
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==========
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[](http://godoc.org/github.com/mattn/go-sqlite3)
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[](https://travis-ci.org/mattn/go-sqlite3)
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[](https://coveralls.io/r/mattn/go-sqlite3?branch=master)
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[](http://godoc.org/github.com/mattn/go-sqlite3)
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[](https://goreportcard.com/report/github.com/mattn/go-sqlite3)
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Description
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-----------
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@ -45,25 +46,40 @@ FAQ
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Use `go build --tags "icu"`
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Available extensions: `json1`, `fts5`, `icu`
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* Can't build go-sqlite3 on windows 64bit.
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> Probably, you are using go 1.0, go1.0 has a problem when it comes to compiling/linking on windows 64bit.
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> See: https://github.com/mattn/go-sqlite3/issues/27
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> See: [#27](https://github.com/mattn/go-sqlite3/issues/27)
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* Getting insert error while query is opened.
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> You can pass some arguments into the connection string, for example, a URI.
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> See: https://github.com/mattn/go-sqlite3/issues/39
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> See: [#39](https://github.com/mattn/go-sqlite3/issues/39)
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* Do you want to cross compile? mingw on Linux or Mac?
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> See: https://github.com/mattn/go-sqlite3/issues/106
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> See: [#106](https://github.com/mattn/go-sqlite3/issues/106)
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> See also: http://www.limitlessfx.com/cross-compile-golang-app-for-windows-from-linux.html
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* Want to get time.Time with current locale
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Use `loc=auto` in SQLite3 filename schema like `file:foo.db?loc=auto`.
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* Can I use this in multiple routines concurrently?
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Yes for readonly. But, No for writable. See [#50](https://github.com/mattn/go-sqlite3/issues/50), [#51](https://github.com/mattn/go-sqlite3/issues/51), [#209](https://github.com/mattn/go-sqlite3/issues/209).
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* Why is it racy if I use a `sql.Open("sqlite3", ":memory:")` database?
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Each connection to :memory: opens a brand new in-memory sql database, so if
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the stdlib's sql engine happens to open another connection and you've only
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specified ":memory:", that connection will see a brand new database. A
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workaround is to use "file::memory:?mode=memory&cache=shared". Every
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connection to this string will point to the same in-memory database. See
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[#204](https://github.com/mattn/go-sqlite3/issues/204) for more info.
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License
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-------
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@ -19,10 +19,12 @@ import (
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"unsafe"
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)
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// SQLiteBackup implement interface of Backup.
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type SQLiteBackup struct {
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b *C.sqlite3_backup
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}
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// Backup make backup from src to dest.
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func (c *SQLiteConn) Backup(dest string, conn *SQLiteConn, src string) (*SQLiteBackup, error) {
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destptr := C.CString(dest)
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defer C.free(unsafe.Pointer(destptr))
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@ -37,10 +39,10 @@ func (c *SQLiteConn) Backup(dest string, conn *SQLiteConn, src string) (*SQLiteB
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return nil, c.lastError()
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}
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// Backs up for one step. Calls the underlying `sqlite3_backup_step` function.
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// This function returns a boolean indicating if the backup is done and
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// an error signalling any other error. Done is returned if the underlying C
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// function returns SQLITE_DONE (Code 101)
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// Step to backs up for one step. Calls the underlying `sqlite3_backup_step`
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// function. This function returns a boolean indicating if the backup is done
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// and an error signalling any other error. Done is returned if the underlying
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// C function returns SQLITE_DONE (Code 101)
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func (b *SQLiteBackup) Step(p int) (bool, error) {
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ret := C.sqlite3_backup_step(b.b, C.int(p))
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if ret == C.SQLITE_DONE {
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@ -51,18 +53,22 @@ func (b *SQLiteBackup) Step(p int) (bool, error) {
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return false, nil
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}
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// Remaining return whether have the rest for backup.
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func (b *SQLiteBackup) Remaining() int {
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return int(C.sqlite3_backup_remaining(b.b))
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}
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// PageCount return count of pages.
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func (b *SQLiteBackup) PageCount() int {
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return int(C.sqlite3_backup_pagecount(b.b))
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}
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// Finish close backup.
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func (b *SQLiteBackup) Finish() error {
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return b.Close()
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}
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// Close close backup.
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func (b *SQLiteBackup) Close() error {
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ret := C.sqlite3_backup_finish(b.b)
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@ -40,8 +40,8 @@ func callbackTrampoline(ctx *C.sqlite3_context, argc int, argv **C.sqlite3_value
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}
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//export stepTrampoline
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func stepTrampoline(ctx *C.sqlite3_context, argc int, argv **C.sqlite3_value) {
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args := (*[(math.MaxInt32 - 1) / unsafe.Sizeof((*C.sqlite3_value)(nil))]*C.sqlite3_value)(unsafe.Pointer(argv))[:argc:argc]
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func stepTrampoline(ctx *C.sqlite3_context, argc C.int, argv **C.sqlite3_value) {
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args := (*[(math.MaxInt32 - 1) / unsafe.Sizeof((*C.sqlite3_value)(nil))]*C.sqlite3_value)(unsafe.Pointer(argv))[:int(argc):int(argc)]
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ai := lookupHandle(uintptr(C.sqlite3_user_data(ctx))).(*aggInfo)
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ai.Step(ctx, args)
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}
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@ -110,5 +110,3 @@ See the documentation of RegisterFunc for more details.
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*/
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package sqlite3
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import "C"
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@ -7,12 +7,16 @@ package sqlite3
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import "C"
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// ErrNo inherit errno.
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type ErrNo int
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// ErrNoMask is mask code.
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const ErrNoMask C.int = 0xff
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// ErrNoExtended is extended errno.
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type ErrNoExtended int
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// Error implement sqlite error code.
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type Error struct {
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Code ErrNo /* The error code returned by SQLite */
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ExtendedCode ErrNoExtended /* The extended error code returned by SQLite */
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@ -52,14 +56,17 @@ var (
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ErrWarning = ErrNo(28) /* Warnings from sqlite3_log() */
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)
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// Error return error message from errno.
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func (err ErrNo) Error() string {
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return Error{Code: err}.Error()
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}
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// Extend return extended errno.
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func (err ErrNo) Extend(by int) ErrNoExtended {
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return ErrNoExtended(int(err) | (by << 8))
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}
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// Error return error message that is extended code.
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func (err ErrNoExtended) Error() string {
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return Error{Code: ErrNo(C.int(err) & ErrNoMask), ExtendedCode: err}.Error()
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}
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@ -121,7 +128,7 @@ var (
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ErrConstraintTrigger = ErrConstraint.Extend(7)
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ErrConstraintUnique = ErrConstraint.Extend(8)
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ErrConstraintVTab = ErrConstraint.Extend(9)
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ErrConstraintRowId = ErrConstraint.Extend(10)
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ErrConstraintRowID = ErrConstraint.Extend(10)
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ErrNoticeRecoverWAL = ErrNotice.Extend(1)
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ErrNoticeRecoverRollback = ErrNotice.Extend(2)
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ErrWarningAutoIndex = ErrWarning.Extend(1)
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File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
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@ -7,9 +7,10 @@ package sqlite3
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/*
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#cgo CFLAGS: -std=gnu99
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#cgo CFLAGS: -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE
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#cgo CFLAGS: -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE=1
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#cgo CFLAGS: -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS4_UNICODE61
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#cgo CFLAGS: -DSQLITE_TRACE_SIZE_LIMIT=15
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#cgo CFLAGS: -DSQLITE_DISABLE_INTRINSIC
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#cgo CFLAGS: -Wno-deprecated-declarations
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#ifndef USE_LIBSQLITE3
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#include <sqlite3-binding.h>
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@ -112,14 +113,17 @@ import (
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"runtime"
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"strconv"
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"strings"
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"sync"
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"time"
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"unsafe"
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"golang.org/x/net/context"
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)
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// Timestamp formats understood by both this module and SQLite.
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// The first format in the slice will be used when saving time values
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// into the database. When parsing a string from a timestamp or
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// datetime column, the formats are tried in order.
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// SQLiteTimestampFormats is timestamp formats understood by both this module
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// and SQLite. The first format in the slice will be used when saving time
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// values into the database. When parsing a string from a timestamp or datetime
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// column, the formats are tried in order.
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var SQLiteTimestampFormats = []string{
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// By default, store timestamps with whatever timezone they come with.
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// When parsed, they will be returned with the same timezone.
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@ -139,21 +143,22 @@ func init() {
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}
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// Version returns SQLite library version information.
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func Version() (libVersion string, libVersionNumber int, sourceId string) {
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func Version() (libVersion string, libVersionNumber int, sourceID string) {
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libVersion = C.GoString(C.sqlite3_libversion())
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libVersionNumber = int(C.sqlite3_libversion_number())
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sourceId = C.GoString(C.sqlite3_sourceid())
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return libVersion, libVersionNumber, sourceId
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sourceID = C.GoString(C.sqlite3_sourceid())
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return libVersion, libVersionNumber, sourceID
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}
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// Driver struct.
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// SQLiteDriver implement sql.Driver.
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type SQLiteDriver struct {
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Extensions []string
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ConnectHook func(*SQLiteConn) error
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}
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// Conn struct.
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// SQLiteConn implement sql.Conn.
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type SQLiteConn struct {
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dbMu sync.Mutex
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db *C.sqlite3
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loc *time.Location
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txlock string
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@ -161,35 +166,34 @@ type SQLiteConn struct {
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aggregators []*aggInfo
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}
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// Tx struct.
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// SQLiteTx implemen sql.Tx.
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type SQLiteTx struct {
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c *SQLiteConn
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}
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// Stmt struct.
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// SQLiteStmt implement sql.Stmt.
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type SQLiteStmt struct {
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c *SQLiteConn
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s *C.sqlite3_stmt
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nv int
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nn []string
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t string
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closed bool
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cls bool
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}
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// Result struct.
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// SQLiteResult implement sql.Result.
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type SQLiteResult struct {
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id int64
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changes int64
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}
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// Rows struct.
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// SQLiteRows implement sql.Rows.
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type SQLiteRows struct {
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s *SQLiteStmt
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nc int
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cols []string
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decltype []string
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cls bool
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done chan struct{}
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}
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type functionInfo struct {
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@ -295,19 +299,19 @@ func (ai *aggInfo) Done(ctx *C.sqlite3_context) {
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// Commit transaction.
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func (tx *SQLiteTx) Commit() error {
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_, err := tx.c.exec("COMMIT")
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_, err := tx.c.exec(context.Background(), "COMMIT", nil)
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if err != nil && err.(Error).Code == C.SQLITE_BUSY {
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// sqlite3 will leave the transaction open in this scenario.
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// However, database/sql considers the transaction complete once we
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// return from Commit() - we must clean up to honour its semantics.
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tx.c.exec("ROLLBACK")
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tx.c.exec(context.Background(), "ROLLBACK", nil)
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}
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return err
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}
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// Rollback transaction.
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func (tx *SQLiteTx) Rollback() error {
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_, err := tx.c.exec("ROLLBACK")
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_, err := tx.c.exec(context.Background(), "ROLLBACK", nil)
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return err
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}
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|
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@ -381,34 +385,54 @@ func (c *SQLiteConn) RegisterFunc(name string, impl interface{}, pure bool) erro
|
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if pure {
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opts |= C.SQLITE_DETERMINISTIC
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}
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rv := C._sqlite3_create_function(c.db, cname, C.int(numArgs), C.int(opts), C.uintptr_t(newHandle(c, &fi)), (*[0]byte)(unsafe.Pointer(C.callbackTrampoline)), nil, nil)
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rv := sqlite3CreateFunction(c.db, cname, C.int(numArgs), C.int(opts), newHandle(c, &fi), C.callbackTrampoline, nil, nil)
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if rv != C.SQLITE_OK {
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return c.lastError()
|
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}
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return nil
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}
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|
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func sqlite3CreateFunction(db *C.sqlite3, zFunctionName *C.char, nArg C.int, eTextRep C.int, pApp uintptr, xFunc unsafe.Pointer, xStep unsafe.Pointer, xFinal unsafe.Pointer) C.int {
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return C._sqlite3_create_function(db, zFunctionName, nArg, eTextRep, C.uintptr_t(pApp), (*[0]byte)(unsafe.Pointer(xFunc)), (*[0]byte)(unsafe.Pointer(xStep)), (*[0]byte)(unsafe.Pointer(xFinal)))
|
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}
|
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|
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// AutoCommit return which currently auto commit or not.
|
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func (c *SQLiteConn) AutoCommit() bool {
|
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return int(C.sqlite3_get_autocommit(c.db)) != 0
|
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}
|
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|
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func (c *SQLiteConn) lastError() Error {
|
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func (c *SQLiteConn) lastError() error {
|
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return lastError(c.db)
|
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}
|
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|
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func lastError(db *C.sqlite3) error {
|
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rv := C.sqlite3_errcode(db)
|
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if rv == C.SQLITE_OK {
|
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return nil
|
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}
|
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return Error{
|
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Code: ErrNo(C.sqlite3_errcode(c.db)),
|
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ExtendedCode: ErrNoExtended(C.sqlite3_extended_errcode(c.db)),
|
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err: C.GoString(C.sqlite3_errmsg(c.db)),
|
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Code: ErrNo(rv),
|
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ExtendedCode: ErrNoExtended(C.sqlite3_extended_errcode(db)),
|
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err: C.GoString(C.sqlite3_errmsg(db)),
|
||||
}
|
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}
|
||||
|
||||
// Implements Execer
|
||||
// Exec implements Execer.
|
||||
func (c *SQLiteConn) Exec(query string, args []driver.Value) (driver.Result, error) {
|
||||
if len(args) == 0 {
|
||||
return c.exec(query)
|
||||
list := make([]namedValue, len(args))
|
||||
for i, v := range args {
|
||||
list[i] = namedValue{
|
||||
Ordinal: i + 1,
|
||||
Value: v,
|
||||
}
|
||||
}
|
||||
return c.exec(context.Background(), query, list)
|
||||
}
|
||||
|
||||
func (c *SQLiteConn) exec(ctx context.Context, query string, args []namedValue) (driver.Result, error) {
|
||||
start := 0
|
||||
for {
|
||||
s, err := c.Prepare(query)
|
||||
s, err := c.prepare(ctx, query)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
|
@ -416,14 +440,19 @@ func (c *SQLiteConn) Exec(query string, args []driver.Value) (driver.Result, err
|
|||
if s.(*SQLiteStmt).s != nil {
|
||||
na := s.NumInput()
|
||||
if len(args) < na {
|
||||
return nil, fmt.Errorf("Not enough args to execute query. Expected %d, got %d.", na, len(args))
|
||||
s.Close()
|
||||
return nil, fmt.Errorf("not enough args to execute query: want %d got %d", na, len(args))
|
||||
}
|
||||
res, err = s.Exec(args[:na])
|
||||
for i := 0; i < na; i++ {
|
||||
args[i].Ordinal -= start
|
||||
}
|
||||
res, err = s.(*SQLiteStmt).exec(ctx, args[:na])
|
||||
if err != nil && err != driver.ErrSkip {
|
||||
s.Close()
|
||||
return nil, err
|
||||
}
|
||||
args = args[na:]
|
||||
start += na
|
||||
}
|
||||
tail := s.(*SQLiteStmt).t
|
||||
s.Close()
|
||||
|
|
@ -434,24 +463,46 @@ func (c *SQLiteConn) Exec(query string, args []driver.Value) (driver.Result, err
|
|||
}
|
||||
}
|
||||
|
||||
// Implements Queryer
|
||||
type namedValue struct {
|
||||
Name string
|
||||
Ordinal int
|
||||
Value driver.Value
|
||||
}
|
||||
|
||||
// Query implements Queryer.
|
||||
func (c *SQLiteConn) Query(query string, args []driver.Value) (driver.Rows, error) {
|
||||
list := make([]namedValue, len(args))
|
||||
for i, v := range args {
|
||||
list[i] = namedValue{
|
||||
Ordinal: i + 1,
|
||||
Value: v,
|
||||
}
|
||||
}
|
||||
return c.query(context.Background(), query, list)
|
||||
}
|
||||
|
||||
func (c *SQLiteConn) query(ctx context.Context, query string, args []namedValue) (driver.Rows, error) {
|
||||
start := 0
|
||||
for {
|
||||
s, err := c.Prepare(query)
|
||||
s, err := c.prepare(ctx, query)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
s.(*SQLiteStmt).cls = true
|
||||
na := s.NumInput()
|
||||
if len(args) < na {
|
||||
return nil, fmt.Errorf("Not enough args to execute query. Expected %d, got %d.", na, len(args))
|
||||
return nil, fmt.Errorf("not enough args to execute query: want %d got %d", na, len(args))
|
||||
}
|
||||
rows, err := s.Query(args[:na])
|
||||
for i := 0; i < na; i++ {
|
||||
args[i].Ordinal -= start
|
||||
}
|
||||
rows, err := s.(*SQLiteStmt).query(ctx, args[:na])
|
||||
if err != nil && err != driver.ErrSkip {
|
||||
s.Close()
|
||||
return nil, err
|
||||
return rows, err
|
||||
}
|
||||
args = args[na:]
|
||||
start += na
|
||||
tail := s.(*SQLiteStmt).t
|
||||
if tail == "" {
|
||||
return rows, nil
|
||||
|
|
@ -462,21 +513,13 @@ func (c *SQLiteConn) Query(query string, args []driver.Value) (driver.Rows, erro
|
|||
}
|
||||
}
|
||||
|
||||
func (c *SQLiteConn) exec(cmd string) (driver.Result, error) {
|
||||
pcmd := C.CString(cmd)
|
||||
defer C.free(unsafe.Pointer(pcmd))
|
||||
|
||||
var rowid, changes C.longlong
|
||||
rv := C._sqlite3_exec(c.db, pcmd, &rowid, &changes)
|
||||
if rv != C.SQLITE_OK {
|
||||
return nil, c.lastError()
|
||||
}
|
||||
return &SQLiteResult{int64(rowid), int64(changes)}, nil
|
||||
}
|
||||
|
||||
// Begin transaction.
|
||||
func (c *SQLiteConn) Begin() (driver.Tx, error) {
|
||||
if _, err := c.exec(c.txlock); err != nil {
|
||||
return c.begin(context.Background())
|
||||
}
|
||||
|
||||
func (c *SQLiteConn) begin(ctx context.Context) (driver.Tx, error) {
|
||||
if _, err := c.exec(ctx, c.txlock, nil); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return &SQLiteTx{c}, nil
|
||||
|
|
@ -500,6 +543,8 @@ func errorString(err Error) string {
|
|||
// _txlock=XXX
|
||||
// Specify locking behavior for transactions. XXX can be "immediate",
|
||||
// "deferred", "exclusive".
|
||||
// _foreign_keys=X
|
||||
// Enable or disable enforcement of foreign keys. X can be 1 or 0.
|
||||
func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
|
||||
if C.sqlite3_threadsafe() == 0 {
|
||||
return nil, errors.New("sqlite library was not compiled for thread-safe operation")
|
||||
|
|
@ -507,7 +552,8 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
|
|||
|
||||
var loc *time.Location
|
||||
txlock := "BEGIN"
|
||||
busy_timeout := 5000
|
||||
busyTimeout := 5000
|
||||
foreignKeys := -1
|
||||
pos := strings.IndexRune(dsn, '?')
|
||||
if pos >= 1 {
|
||||
params, err := url.ParseQuery(dsn[pos+1:])
|
||||
|
|
@ -533,7 +579,7 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
|
|||
if err != nil {
|
||||
return nil, fmt.Errorf("Invalid _busy_timeout: %v: %v", val, err)
|
||||
}
|
||||
busy_timeout = int(iv)
|
||||
busyTimeout = int(iv)
|
||||
}
|
||||
|
||||
// _txlock
|
||||
|
|
@ -550,6 +596,18 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
|
|||
}
|
||||
}
|
||||
|
||||
// _foreign_keys
|
||||
if val := params.Get("_foreign_keys"); val != "" {
|
||||
switch val {
|
||||
case "1":
|
||||
foreignKeys = 1
|
||||
case "0":
|
||||
foreignKeys = 0
|
||||
default:
|
||||
return nil, fmt.Errorf("Invalid _foreign_keys: %v", val)
|
||||
}
|
||||
}
|
||||
|
||||
if !strings.HasPrefix(dsn, "file:") {
|
||||
dsn = dsn[:pos]
|
||||
}
|
||||
|
|
@ -570,21 +628,45 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
|
|||
return nil, errors.New("sqlite succeeded without returning a database")
|
||||
}
|
||||
|
||||
rv = C.sqlite3_busy_timeout(db, C.int(busy_timeout))
|
||||
rv = C.sqlite3_busy_timeout(db, C.int(busyTimeout))
|
||||
if rv != C.SQLITE_OK {
|
||||
C.sqlite3_close_v2(db)
|
||||
return nil, Error{Code: ErrNo(rv)}
|
||||
}
|
||||
|
||||
exec := func(s string) error {
|
||||
cs := C.CString(s)
|
||||
rv := C.sqlite3_exec(db, cs, nil, nil, nil)
|
||||
C.free(unsafe.Pointer(cs))
|
||||
if rv != C.SQLITE_OK {
|
||||
return lastError(db)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
if foreignKeys == 0 {
|
||||
if err := exec("PRAGMA foreign_keys = OFF;"); err != nil {
|
||||
C.sqlite3_close_v2(db)
|
||||
return nil, err
|
||||
}
|
||||
} else if foreignKeys == 1 {
|
||||
if err := exec("PRAGMA foreign_keys = ON;"); err != nil {
|
||||
C.sqlite3_close_v2(db)
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
conn := &SQLiteConn{db: db, loc: loc, txlock: txlock}
|
||||
|
||||
if len(d.Extensions) > 0 {
|
||||
if err := conn.loadExtensions(d.Extensions); err != nil {
|
||||
conn.Close()
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
if d.ConnectHook != nil {
|
||||
if err := d.ConnectHook(conn); err != nil {
|
||||
conn.Close()
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
|
@ -594,18 +676,33 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
|
|||
|
||||
// Close the connection.
|
||||
func (c *SQLiteConn) Close() error {
|
||||
deleteHandles(c)
|
||||
rv := C.sqlite3_close_v2(c.db)
|
||||
if rv != C.SQLITE_OK {
|
||||
return c.lastError()
|
||||
}
|
||||
deleteHandles(c)
|
||||
c.dbMu.Lock()
|
||||
c.db = nil
|
||||
c.dbMu.Unlock()
|
||||
runtime.SetFinalizer(c, nil)
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *SQLiteConn) dbConnOpen() bool {
|
||||
if c == nil {
|
||||
return false
|
||||
}
|
||||
c.dbMu.Lock()
|
||||
defer c.dbMu.Unlock()
|
||||
return c.db != nil
|
||||
}
|
||||
|
||||
// Prepare the query string. Return a new statement.
|
||||
func (c *SQLiteConn) Prepare(query string) (driver.Stmt, error) {
|
||||
return c.prepare(context.Background(), query)
|
||||
}
|
||||
|
||||
func (c *SQLiteConn) prepare(ctx context.Context, query string) (driver.Stmt, error) {
|
||||
pquery := C.CString(query)
|
||||
defer C.free(unsafe.Pointer(pquery))
|
||||
var s *C.sqlite3_stmt
|
||||
|
|
@ -618,15 +715,7 @@ func (c *SQLiteConn) Prepare(query string) (driver.Stmt, error) {
|
|||
if tail != nil && *tail != '\000' {
|
||||
t = strings.TrimSpace(C.GoString(tail))
|
||||
}
|
||||
nv := int(C.sqlite3_bind_parameter_count(s))
|
||||
var nn []string
|
||||
for i := 0; i < nv; i++ {
|
||||
pn := C.GoString(C.sqlite3_bind_parameter_name(s, C.int(i+1)))
|
||||
if len(pn) > 1 && pn[0] == '$' && 48 <= pn[1] && pn[1] <= 57 {
|
||||
nn = append(nn, C.GoString(C.sqlite3_bind_parameter_name(s, C.int(i+1))))
|
||||
}
|
||||
}
|
||||
ss := &SQLiteStmt{c: c, s: s, nv: nv, nn: nn, t: t}
|
||||
ss := &SQLiteStmt{c: c, s: s, t: t}
|
||||
runtime.SetFinalizer(ss, (*SQLiteStmt).Close)
|
||||
return ss, nil
|
||||
}
|
||||
|
|
@ -637,7 +726,7 @@ func (s *SQLiteStmt) Close() error {
|
|||
return nil
|
||||
}
|
||||
s.closed = true
|
||||
if s.c == nil || s.c.db == nil {
|
||||
if !s.c.dbConnOpen() {
|
||||
return errors.New("sqlite statement with already closed database connection")
|
||||
}
|
||||
rv := C.sqlite3_finalize(s.s)
|
||||
|
|
@ -648,9 +737,9 @@ func (s *SQLiteStmt) Close() error {
|
|||
return nil
|
||||
}
|
||||
|
||||
// Return a number of parameters.
|
||||
// NumInput return a number of parameters.
|
||||
func (s *SQLiteStmt) NumInput() int {
|
||||
return s.nv
|
||||
return int(C.sqlite3_bind_parameter_count(s.s))
|
||||
}
|
||||
|
||||
type bindArg struct {
|
||||
|
|
@ -658,37 +747,30 @@ type bindArg struct {
|
|||
v driver.Value
|
||||
}
|
||||
|
||||
func (s *SQLiteStmt) bind(args []driver.Value) error {
|
||||
var placeHolder = []byte{0}
|
||||
|
||||
func (s *SQLiteStmt) bind(args []namedValue) error {
|
||||
rv := C.sqlite3_reset(s.s)
|
||||
if rv != C.SQLITE_ROW && rv != C.SQLITE_OK && rv != C.SQLITE_DONE {
|
||||
return s.c.lastError()
|
||||
}
|
||||
|
||||
var vargs []bindArg
|
||||
narg := len(args)
|
||||
vargs = make([]bindArg, narg)
|
||||
if len(s.nn) > 0 {
|
||||
for i, v := range s.nn {
|
||||
if pi, err := strconv.Atoi(v[1:]); err == nil {
|
||||
vargs[i] = bindArg{pi, args[i]}
|
||||
}
|
||||
}
|
||||
} else {
|
||||
for i, v := range args {
|
||||
vargs[i] = bindArg{i + 1, v}
|
||||
for i, v := range args {
|
||||
if v.Name != "" {
|
||||
cname := C.CString(":" + v.Name)
|
||||
args[i].Ordinal = int(C.sqlite3_bind_parameter_index(s.s, cname))
|
||||
C.free(unsafe.Pointer(cname))
|
||||
}
|
||||
}
|
||||
|
||||
for _, varg := range vargs {
|
||||
n := C.int(varg.n)
|
||||
v := varg.v
|
||||
switch v := v.(type) {
|
||||
for _, arg := range args {
|
||||
n := C.int(arg.Ordinal)
|
||||
switch v := arg.Value.(type) {
|
||||
case nil:
|
||||
rv = C.sqlite3_bind_null(s.s, n)
|
||||
case string:
|
||||
if len(v) == 0 {
|
||||
b := []byte{0}
|
||||
rv = C._sqlite3_bind_text(s.s, n, (*C.char)(unsafe.Pointer(&b[0])), C.int(0))
|
||||
rv = C._sqlite3_bind_text(s.s, n, (*C.char)(unsafe.Pointer(&placeHolder[0])), C.int(0))
|
||||
} else {
|
||||
b := []byte(v)
|
||||
rv = C._sqlite3_bind_text(s.s, n, (*C.char)(unsafe.Pointer(&b[0])), C.int(len(b)))
|
||||
|
|
@ -705,10 +787,9 @@ func (s *SQLiteStmt) bind(args []driver.Value) error {
|
|||
rv = C.sqlite3_bind_double(s.s, n, C.double(v))
|
||||
case []byte:
|
||||
if len(v) == 0 {
|
||||
rv = C._sqlite3_bind_blob(s.s, n, nil, 0)
|
||||
} else {
|
||||
rv = C._sqlite3_bind_blob(s.s, n, unsafe.Pointer(&v[0]), C.int(len(v)))
|
||||
v = placeHolder
|
||||
}
|
||||
rv = C._sqlite3_bind_blob(s.s, n, unsafe.Pointer(&v[0]), C.int(len(v)))
|
||||
case time.Time:
|
||||
b := []byte(v.Format(SQLiteTimestampFormats[0]))
|
||||
rv = C._sqlite3_bind_text(s.s, n, (*C.char)(unsafe.Pointer(&b[0])), C.int(len(b)))
|
||||
|
|
@ -722,29 +803,85 @@ func (s *SQLiteStmt) bind(args []driver.Value) error {
|
|||
|
||||
// Query the statement with arguments. Return records.
|
||||
func (s *SQLiteStmt) Query(args []driver.Value) (driver.Rows, error) {
|
||||
list := make([]namedValue, len(args))
|
||||
for i, v := range args {
|
||||
list[i] = namedValue{
|
||||
Ordinal: i + 1,
|
||||
Value: v,
|
||||
}
|
||||
}
|
||||
return s.query(context.Background(), list)
|
||||
}
|
||||
|
||||
func (s *SQLiteStmt) query(ctx context.Context, args []namedValue) (driver.Rows, error) {
|
||||
if err := s.bind(args); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return &SQLiteRows{s, int(C.sqlite3_column_count(s.s)), nil, nil, s.cls}, nil
|
||||
|
||||
rows := &SQLiteRows{
|
||||
s: s,
|
||||
nc: int(C.sqlite3_column_count(s.s)),
|
||||
cols: nil,
|
||||
decltype: nil,
|
||||
cls: s.cls,
|
||||
done: make(chan struct{}),
|
||||
}
|
||||
|
||||
go func(db *C.sqlite3) {
|
||||
select {
|
||||
case <-ctx.Done():
|
||||
select {
|
||||
case <-rows.done:
|
||||
default:
|
||||
C.sqlite3_interrupt(db)
|
||||
rows.Close()
|
||||
}
|
||||
case <-rows.done:
|
||||
}
|
||||
}(s.c.db)
|
||||
|
||||
return rows, nil
|
||||
}
|
||||
|
||||
// Return last inserted ID.
|
||||
// LastInsertId teturn last inserted ID.
|
||||
func (r *SQLiteResult) LastInsertId() (int64, error) {
|
||||
return r.id, nil
|
||||
}
|
||||
|
||||
// Return how many rows affected.
|
||||
// RowsAffected return how many rows affected.
|
||||
func (r *SQLiteResult) RowsAffected() (int64, error) {
|
||||
return r.changes, nil
|
||||
}
|
||||
|
||||
// Execute the statement with arguments. Return result object.
|
||||
// Exec execute the statement with arguments. Return result object.
|
||||
func (s *SQLiteStmt) Exec(args []driver.Value) (driver.Result, error) {
|
||||
list := make([]namedValue, len(args))
|
||||
for i, v := range args {
|
||||
list[i] = namedValue{
|
||||
Ordinal: i + 1,
|
||||
Value: v,
|
||||
}
|
||||
}
|
||||
return s.exec(context.Background(), list)
|
||||
}
|
||||
|
||||
func (s *SQLiteStmt) exec(ctx context.Context, args []namedValue) (driver.Result, error) {
|
||||
if err := s.bind(args); err != nil {
|
||||
C.sqlite3_reset(s.s)
|
||||
C.sqlite3_clear_bindings(s.s)
|
||||
return nil, err
|
||||
}
|
||||
|
||||
done := make(chan struct{})
|
||||
defer close(done)
|
||||
go func(db *C.sqlite3) {
|
||||
select {
|
||||
case <-ctx.Done():
|
||||
C.sqlite3_interrupt(db)
|
||||
case <-done:
|
||||
}
|
||||
}(s.c.db)
|
||||
|
||||
var rowid, changes C.longlong
|
||||
rv := C._sqlite3_step(s.s, &rowid, &changes)
|
||||
if rv != C.SQLITE_ROW && rv != C.SQLITE_OK && rv != C.SQLITE_DONE {
|
||||
|
|
@ -753,7 +890,8 @@ func (s *SQLiteStmt) Exec(args []driver.Value) (driver.Result, error) {
|
|||
C.sqlite3_clear_bindings(s.s)
|
||||
return nil, err
|
||||
}
|
||||
return &SQLiteResult{int64(rowid), int64(changes)}, nil
|
||||
|
||||
return &SQLiteResult{id: int64(rowid), changes: int64(changes)}, nil
|
||||
}
|
||||
|
||||
// Close the rows.
|
||||
|
|
@ -761,6 +899,9 @@ func (rc *SQLiteRows) Close() error {
|
|||
if rc.s.closed {
|
||||
return nil
|
||||
}
|
||||
if rc.done != nil {
|
||||
close(rc.done)
|
||||
}
|
||||
if rc.cls {
|
||||
return rc.s.Close()
|
||||
}
|
||||
|
|
@ -771,7 +912,7 @@ func (rc *SQLiteRows) Close() error {
|
|||
return nil
|
||||
}
|
||||
|
||||
// Return column names.
|
||||
// Columns return column names.
|
||||
func (rc *SQLiteRows) Columns() []string {
|
||||
if rc.nc != len(rc.cols) {
|
||||
rc.cols = make([]string, rc.nc)
|
||||
|
|
@ -782,7 +923,7 @@ func (rc *SQLiteRows) Columns() []string {
|
|||
return rc.cols
|
||||
}
|
||||
|
||||
// Return column types.
|
||||
// DeclTypes return column types.
|
||||
func (rc *SQLiteRows) DeclTypes() []string {
|
||||
if rc.decltype == nil {
|
||||
rc.decltype = make([]string, rc.nc)
|
||||
|
|
@ -793,7 +934,7 @@ func (rc *SQLiteRows) DeclTypes() []string {
|
|||
return rc.decltype
|
||||
}
|
||||
|
||||
// Move cursor to next.
|
||||
// Next move cursor to next.
|
||||
func (rc *SQLiteRows) Next(dest []driver.Value) error {
|
||||
rv := C.sqlite3_step(rc.s.s)
|
||||
if rv == C.SQLITE_DONE {
|
||||
|
|
@ -820,10 +961,11 @@ func (rc *SQLiteRows) Next(dest []driver.Value) error {
|
|||
// large to be a reasonable timestamp in seconds.
|
||||
if val > 1e12 || val < -1e12 {
|
||||
val *= int64(time.Millisecond) // convert ms to nsec
|
||||
t = time.Unix(0, val)
|
||||
} else {
|
||||
val *= int64(time.Second) // convert sec to nsec
|
||||
t = time.Unix(val, 0)
|
||||
}
|
||||
t = time.Unix(0, val).UTC()
|
||||
t = t.UTC()
|
||||
if rc.s.c.loc != nil {
|
||||
t = t.In(rc.s.c.loc)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,103 @@
|
|||
// Copyright (C) 2014 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
|
||||
//
|
||||
// Use of this source code is governed by an MIT-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package sqlite3
|
||||
|
||||
/*
|
||||
|
||||
#ifndef USE_LIBSQLITE3
|
||||
#include <sqlite3-binding.h>
|
||||
#else
|
||||
#include <sqlite3.h>
|
||||
#endif
|
||||
#include <stdlib.h>
|
||||
// These wrappers are necessary because SQLITE_TRANSIENT
|
||||
// is a pointer constant, and cgo doesn't translate them correctly.
|
||||
|
||||
static inline void my_result_text(sqlite3_context *ctx, char *p, int np) {
|
||||
sqlite3_result_text(ctx, p, np, SQLITE_TRANSIENT);
|
||||
}
|
||||
|
||||
static inline void my_result_blob(sqlite3_context *ctx, void *p, int np) {
|
||||
sqlite3_result_blob(ctx, p, np, SQLITE_TRANSIENT);
|
||||
}
|
||||
*/
|
||||
import "C"
|
||||
|
||||
import (
|
||||
"math"
|
||||
"reflect"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
const i64 = unsafe.Sizeof(int(0)) > 4
|
||||
|
||||
// SQLiteContext behave sqlite3_context
|
||||
type SQLiteContext C.sqlite3_context
|
||||
|
||||
// ResultBool sets the result of an SQL function.
|
||||
func (c *SQLiteContext) ResultBool(b bool) {
|
||||
if b {
|
||||
c.ResultInt(1)
|
||||
} else {
|
||||
c.ResultInt(0)
|
||||
}
|
||||
}
|
||||
|
||||
// ResultBlob sets the result of an SQL function.
|
||||
// See: sqlite3_result_blob, http://sqlite.org/c3ref/result_blob.html
|
||||
func (c *SQLiteContext) ResultBlob(b []byte) {
|
||||
if i64 && len(b) > math.MaxInt32 {
|
||||
C.sqlite3_result_error_toobig((*C.sqlite3_context)(c))
|
||||
return
|
||||
}
|
||||
var p *byte
|
||||
if len(b) > 0 {
|
||||
p = &b[0]
|
||||
}
|
||||
C.my_result_blob((*C.sqlite3_context)(c), unsafe.Pointer(p), C.int(len(b)))
|
||||
}
|
||||
|
||||
// ResultDouble sets the result of an SQL function.
|
||||
// See: sqlite3_result_double, http://sqlite.org/c3ref/result_blob.html
|
||||
func (c *SQLiteContext) ResultDouble(d float64) {
|
||||
C.sqlite3_result_double((*C.sqlite3_context)(c), C.double(d))
|
||||
}
|
||||
|
||||
// ResultInt sets the result of an SQL function.
|
||||
// See: sqlite3_result_int, http://sqlite.org/c3ref/result_blob.html
|
||||
func (c *SQLiteContext) ResultInt(i int) {
|
||||
if i64 && (i > math.MaxInt32 || i < math.MinInt32) {
|
||||
C.sqlite3_result_int64((*C.sqlite3_context)(c), C.sqlite3_int64(i))
|
||||
} else {
|
||||
C.sqlite3_result_int((*C.sqlite3_context)(c), C.int(i))
|
||||
}
|
||||
}
|
||||
|
||||
// ResultInt64 sets the result of an SQL function.
|
||||
// See: sqlite3_result_int64, http://sqlite.org/c3ref/result_blob.html
|
||||
func (c *SQLiteContext) ResultInt64(i int64) {
|
||||
C.sqlite3_result_int64((*C.sqlite3_context)(c), C.sqlite3_int64(i))
|
||||
}
|
||||
|
||||
// ResultNull sets the result of an SQL function.
|
||||
// See: sqlite3_result_null, http://sqlite.org/c3ref/result_blob.html
|
||||
func (c *SQLiteContext) ResultNull() {
|
||||
C.sqlite3_result_null((*C.sqlite3_context)(c))
|
||||
}
|
||||
|
||||
// ResultText sets the result of an SQL function.
|
||||
// See: sqlite3_result_text, http://sqlite.org/c3ref/result_blob.html
|
||||
func (c *SQLiteContext) ResultText(s string) {
|
||||
h := (*reflect.StringHeader)(unsafe.Pointer(&s))
|
||||
cs, l := (*C.char)(unsafe.Pointer(h.Data)), C.int(h.Len)
|
||||
C.my_result_text((*C.sqlite3_context)(c), cs, l)
|
||||
}
|
||||
|
||||
// ResultZeroblob sets the result of an SQL function.
|
||||
// See: sqlite3_result_zeroblob, http://sqlite.org/c3ref/result_blob.html
|
||||
func (c *SQLiteContext) ResultZeroblob(n int) {
|
||||
C.sqlite3_result_zeroblob((*C.sqlite3_context)(c), C.int(n))
|
||||
}
|
||||
|
|
@ -0,0 +1,69 @@
|
|||
// Copyright (C) 2014 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
|
||||
//
|
||||
// Use of this source code is governed by an MIT-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build go1.8
|
||||
|
||||
package sqlite3
|
||||
|
||||
import (
|
||||
"database/sql/driver"
|
||||
"errors"
|
||||
|
||||
"context"
|
||||
)
|
||||
|
||||
// Ping implement Pinger.
|
||||
func (c *SQLiteConn) Ping(ctx context.Context) error {
|
||||
if c.db == nil {
|
||||
return errors.New("Connection was closed")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// QueryContext implement QueryerContext.
|
||||
func (c *SQLiteConn) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Rows, error) {
|
||||
list := make([]namedValue, len(args))
|
||||
for i, nv := range args {
|
||||
list[i] = namedValue(nv)
|
||||
}
|
||||
return c.query(ctx, query, list)
|
||||
}
|
||||
|
||||
// ExecContext implement ExecerContext.
|
||||
func (c *SQLiteConn) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Result, error) {
|
||||
list := make([]namedValue, len(args))
|
||||
for i, nv := range args {
|
||||
list[i] = namedValue(nv)
|
||||
}
|
||||
return c.exec(ctx, query, list)
|
||||
}
|
||||
|
||||
// PrepareContext implement ConnPrepareContext.
|
||||
func (c *SQLiteConn) PrepareContext(ctx context.Context, query string) (driver.Stmt, error) {
|
||||
return c.prepare(ctx, query)
|
||||
}
|
||||
|
||||
// BeginTx implement ConnBeginTx.
|
||||
func (c *SQLiteConn) BeginTx(ctx context.Context, opts driver.TxOptions) (driver.Tx, error) {
|
||||
return c.begin(ctx)
|
||||
}
|
||||
|
||||
// QueryContext implement QueryerContext.
|
||||
func (s *SQLiteStmt) QueryContext(ctx context.Context, args []driver.NamedValue) (driver.Rows, error) {
|
||||
list := make([]namedValue, len(args))
|
||||
for i, nv := range args {
|
||||
list[i] = namedValue(nv)
|
||||
}
|
||||
return s.query(ctx, list)
|
||||
}
|
||||
|
||||
// ExecContext implement ExecerContext.
|
||||
func (s *SQLiteStmt) ExecContext(ctx context.Context, args []driver.NamedValue) (driver.Result, error) {
|
||||
list := make([]namedValue, len(args))
|
||||
for i, nv := range args {
|
||||
list[i] = namedValue(nv)
|
||||
}
|
||||
return s.exec(ctx, list)
|
||||
}
|
||||
|
|
@ -31,6 +31,7 @@ func (c *SQLiteConn) loadExtensions(extensions []string) error {
|
|||
defer C.free(unsafe.Pointer(cext))
|
||||
rv = C.sqlite3_load_extension(c.db, cext, nil, nil)
|
||||
if rv != C.SQLITE_OK {
|
||||
C.sqlite3_enable_load_extension(c.db, 0)
|
||||
return errors.New(C.GoString(C.sqlite3_errmsg(c.db)))
|
||||
}
|
||||
}
|
||||
|
|
@ -42,6 +43,7 @@ func (c *SQLiteConn) loadExtensions(extensions []string) error {
|
|||
return nil
|
||||
}
|
||||
|
||||
// LoadExtension load the sqlite3 extension.
|
||||
func (c *SQLiteConn) LoadExtension(lib string, entry string) error {
|
||||
rv := C.sqlite3_enable_load_extension(c.db, 1)
|
||||
if rv != C.SQLITE_OK {
|
||||
|
|
|
|||
|
|
@ -1,5 +1,4 @@
|
|||
// Copyright (C) 2016 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
|
||||
// TODO: add "Gimpl do foo" team?
|
||||
//
|
||||
// Use of this source code is governed by an MIT-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
|
@ -17,7 +16,7 @@ package sqlite3
|
|||
|
||||
void stepTrampoline(sqlite3_context*, int, sqlite3_value**);
|
||||
void doneTrampoline(sqlite3_context*);
|
||||
void traceCallbackTrampoline(unsigned traceEventCode, void *ctx, void *p, void *x);
|
||||
int traceCallbackTrampoline(unsigned int traceEventCode, void *ctx, void *p, void *x);
|
||||
*/
|
||||
import "C"
|
||||
|
||||
|
|
@ -76,7 +75,7 @@ type TraceUserCallback func(TraceInfo) int
|
|||
|
||||
type TraceConfig struct {
|
||||
Callback TraceUserCallback
|
||||
EventMask uint
|
||||
EventMask C.uint
|
||||
WantExpandedSQL bool
|
||||
}
|
||||
|
||||
|
|
@ -102,13 +101,13 @@ func fillExpandedSQL(info *TraceInfo, db *C.sqlite3, pStmt unsafe.Pointer) {
|
|||
|
||||
//export traceCallbackTrampoline
|
||||
func traceCallbackTrampoline(
|
||||
traceEventCode uint,
|
||||
traceEventCode C.uint,
|
||||
// Parameter named 'C' in SQLite docs = Context given at registration:
|
||||
ctx unsafe.Pointer,
|
||||
// Parameter named 'P' in SQLite docs (Primary event data?):
|
||||
p unsafe.Pointer,
|
||||
// Parameter named 'X' in SQLite docs (eXtra event data?):
|
||||
xValue unsafe.Pointer) int {
|
||||
xValue unsafe.Pointer) C.int {
|
||||
|
||||
if ctx == nil {
|
||||
panic(fmt.Sprintf("No context (ev 0x%x)", traceEventCode))
|
||||
|
|
@ -196,7 +195,7 @@ func traceCallbackTrampoline(
|
|||
if traceConf.Callback != nil {
|
||||
r = traceConf.Callback(info)
|
||||
}
|
||||
return r
|
||||
return C.int(r)
|
||||
}
|
||||
|
||||
type traceMapEntry struct {
|
||||
|
|
@ -358,7 +357,7 @@ func (c *SQLiteConn) RegisterAggregator(name string, impl interface{}, pure bool
|
|||
if pure {
|
||||
opts |= C.SQLITE_DETERMINISTIC
|
||||
}
|
||||
rv := C._sqlite3_create_function(c.db, cname, C.int(stepNArgs), C.int(opts), C.uintptr_t(newHandle(c, &ai)), nil, (*[0]byte)(unsafe.Pointer(C.stepTrampoline)), (*[0]byte)(unsafe.Pointer(C.doneTrampoline)))
|
||||
rv := sqlite3CreateFunction(c.db, cname, C.int(stepNArgs), C.int(opts), newHandle(c, &ai), nil, C.stepTrampoline, C.doneTrampoline)
|
||||
if rv != C.SQLITE_OK {
|
||||
return c.lastError()
|
||||
}
|
||||
|
|
@ -396,7 +395,7 @@ func (c *SQLiteConn) SetTrace(requested *TraceConfig) error {
|
|||
// The callback trampoline function does cleanup on Close event,
|
||||
// regardless of the presence or absence of the user callback.
|
||||
// Therefore it needs the Close event to be selected:
|
||||
actualEventMask := reqCopy.EventMask | TraceClose
|
||||
actualEventMask := uint(reqCopy.EventMask | TraceClose)
|
||||
err := c.setSQLiteTrace(actualEventMask)
|
||||
return err
|
||||
}
|
||||
|
|
@ -0,0 +1,57 @@
|
|||
package sqlite3
|
||||
|
||||
/*
|
||||
#ifndef USE_LIBSQLITE3
|
||||
#include <sqlite3-binding.h>
|
||||
#else
|
||||
#include <sqlite3.h>
|
||||
#endif
|
||||
*/
|
||||
import "C"
|
||||
import (
|
||||
"reflect"
|
||||
"time"
|
||||
)
|
||||
|
||||
// ColumnTypeDatabaseTypeName implement RowsColumnTypeDatabaseTypeName.
|
||||
func (rc *SQLiteRows) ColumnTypeDatabaseTypeName(i int) string {
|
||||
return C.GoString(C.sqlite3_column_decltype(rc.s.s, C.int(i)))
|
||||
}
|
||||
|
||||
/*
|
||||
func (rc *SQLiteRows) ColumnTypeLength(index int) (length int64, ok bool) {
|
||||
return 0, false
|
||||
}
|
||||
|
||||
func (rc *SQLiteRows) ColumnTypePrecisionScale(index int) (precision, scale int64, ok bool) {
|
||||
return 0, 0, false
|
||||
}
|
||||
*/
|
||||
|
||||
// ColumnTypeNullable implement RowsColumnTypeNullable.
|
||||
func (rc *SQLiteRows) ColumnTypeNullable(i int) (nullable, ok bool) {
|
||||
return true, true
|
||||
}
|
||||
|
||||
// ColumnTypeScanType implement RowsColumnTypeScanType.
|
||||
func (rc *SQLiteRows) ColumnTypeScanType(i int) reflect.Type {
|
||||
switch C.sqlite3_column_type(rc.s.s, C.int(i)) {
|
||||
case C.SQLITE_INTEGER:
|
||||
switch C.GoString(C.sqlite3_column_decltype(rc.s.s, C.int(i))) {
|
||||
case "timestamp", "datetime", "date":
|
||||
return reflect.TypeOf(time.Time{})
|
||||
case "boolean":
|
||||
return reflect.TypeOf(false)
|
||||
}
|
||||
return reflect.TypeOf(int64(0))
|
||||
case C.SQLITE_FLOAT:
|
||||
return reflect.TypeOf(float64(0))
|
||||
case C.SQLITE_BLOB:
|
||||
return reflect.SliceOf(reflect.TypeOf(byte(0)))
|
||||
case C.SQLITE_NULL:
|
||||
return reflect.TypeOf(nil)
|
||||
case C.SQLITE_TEXT:
|
||||
return reflect.TypeOf("")
|
||||
}
|
||||
return reflect.SliceOf(reflect.TypeOf(byte(0)))
|
||||
}
|
||||
|
|
@ -0,0 +1,646 @@
|
|||
// Copyright (C) 2014 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
|
||||
//
|
||||
// Use of this source code is governed by an MIT-style
|
||||
// license that can be found in the LICENSE file.
|
||||
// +build vtable
|
||||
|
||||
package sqlite3
|
||||
|
||||
/*
|
||||
#cgo CFLAGS: -std=gnu99
|
||||
#cgo CFLAGS: -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE
|
||||
#cgo CFLAGS: -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS4_UNICODE61
|
||||
#cgo CFLAGS: -DSQLITE_TRACE_SIZE_LIMIT=15
|
||||
#cgo CFLAGS: -DSQLITE_ENABLE_COLUMN_METADATA=1
|
||||
#cgo CFLAGS: -Wno-deprecated-declarations
|
||||
|
||||
#ifndef USE_LIBSQLITE3
|
||||
#include <sqlite3-binding.h>
|
||||
#else
|
||||
#include <sqlite3.h>
|
||||
#endif
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
#include <memory.h>
|
||||
|
||||
static inline char *_sqlite3_mprintf(char *zFormat, char *arg) {
|
||||
return sqlite3_mprintf(zFormat, arg);
|
||||
}
|
||||
|
||||
typedef struct goVTab goVTab;
|
||||
|
||||
struct goVTab {
|
||||
sqlite3_vtab base;
|
||||
void *vTab;
|
||||
};
|
||||
|
||||
uintptr_t goMInit(void *db, void *pAux, int argc, char **argv, char **pzErr, int isCreate);
|
||||
|
||||
static int cXInit(sqlite3 *db, void *pAux, int argc, const char *const*argv, sqlite3_vtab **ppVTab, char **pzErr, int isCreate) {
|
||||
void *vTab = (void *)goMInit(db, pAux, argc, (char**)argv, pzErr, isCreate);
|
||||
if (!vTab || *pzErr) {
|
||||
return SQLITE_ERROR;
|
||||
}
|
||||
goVTab *pvTab = (goVTab *)sqlite3_malloc(sizeof(goVTab));
|
||||
if (!pvTab) {
|
||||
*pzErr = sqlite3_mprintf("%s", "Out of memory");
|
||||
return SQLITE_NOMEM;
|
||||
}
|
||||
memset(pvTab, 0, sizeof(goVTab));
|
||||
pvTab->vTab = vTab;
|
||||
|
||||
*ppVTab = (sqlite3_vtab *)pvTab;
|
||||
*pzErr = 0;
|
||||
return SQLITE_OK;
|
||||
}
|
||||
|
||||
static inline int cXCreate(sqlite3 *db, void *pAux, int argc, const char *const*argv, sqlite3_vtab **ppVTab, char **pzErr) {
|
||||
return cXInit(db, pAux, argc, argv, ppVTab, pzErr, 1);
|
||||
}
|
||||
static inline int cXConnect(sqlite3 *db, void *pAux, int argc, const char *const*argv, sqlite3_vtab **ppVTab, char **pzErr) {
|
||||
return cXInit(db, pAux, argc, argv, ppVTab, pzErr, 0);
|
||||
}
|
||||
|
||||
char* goVBestIndex(void *pVTab, void *icp);
|
||||
|
||||
static inline int cXBestIndex(sqlite3_vtab *pVTab, sqlite3_index_info *info) {
|
||||
char *pzErr = goVBestIndex(((goVTab*)pVTab)->vTab, info);
|
||||
if (pzErr) {
|
||||
if (pVTab->zErrMsg)
|
||||
sqlite3_free(pVTab->zErrMsg);
|
||||
pVTab->zErrMsg = pzErr;
|
||||
return SQLITE_ERROR;
|
||||
}
|
||||
return SQLITE_OK;
|
||||
}
|
||||
|
||||
char* goVRelease(void *pVTab, int isDestroy);
|
||||
|
||||
static int cXRelease(sqlite3_vtab *pVTab, int isDestroy) {
|
||||
char *pzErr = goVRelease(((goVTab*)pVTab)->vTab, isDestroy);
|
||||
if (pzErr) {
|
||||
if (pVTab->zErrMsg)
|
||||
sqlite3_free(pVTab->zErrMsg);
|
||||
pVTab->zErrMsg = pzErr;
|
||||
return SQLITE_ERROR;
|
||||
}
|
||||
if (pVTab->zErrMsg)
|
||||
sqlite3_free(pVTab->zErrMsg);
|
||||
sqlite3_free(pVTab);
|
||||
return SQLITE_OK;
|
||||
}
|
||||
|
||||
static inline int cXDisconnect(sqlite3_vtab *pVTab) {
|
||||
return cXRelease(pVTab, 0);
|
||||
}
|
||||
static inline int cXDestroy(sqlite3_vtab *pVTab) {
|
||||
return cXRelease(pVTab, 1);
|
||||
}
|
||||
|
||||
typedef struct goVTabCursor goVTabCursor;
|
||||
|
||||
struct goVTabCursor {
|
||||
sqlite3_vtab_cursor base;
|
||||
void *vTabCursor;
|
||||
};
|
||||
|
||||
uintptr_t goVOpen(void *pVTab, char **pzErr);
|
||||
|
||||
static int cXOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor) {
|
||||
void *vTabCursor = (void *)goVOpen(((goVTab*)pVTab)->vTab, &(pVTab->zErrMsg));
|
||||
goVTabCursor *pCursor = (goVTabCursor *)sqlite3_malloc(sizeof(goVTabCursor));
|
||||
if (!pCursor) {
|
||||
return SQLITE_NOMEM;
|
||||
}
|
||||
memset(pCursor, 0, sizeof(goVTabCursor));
|
||||
pCursor->vTabCursor = vTabCursor;
|
||||
*ppCursor = (sqlite3_vtab_cursor *)pCursor;
|
||||
return SQLITE_OK;
|
||||
}
|
||||
|
||||
static int setErrMsg(sqlite3_vtab_cursor *pCursor, char *pzErr) {
|
||||
if (pCursor->pVtab->zErrMsg)
|
||||
sqlite3_free(pCursor->pVtab->zErrMsg);
|
||||
pCursor->pVtab->zErrMsg = pzErr;
|
||||
return SQLITE_ERROR;
|
||||
}
|
||||
|
||||
char* goVClose(void *pCursor);
|
||||
|
||||
static int cXClose(sqlite3_vtab_cursor *pCursor) {
|
||||
char *pzErr = goVClose(((goVTabCursor*)pCursor)->vTabCursor);
|
||||
if (pzErr) {
|
||||
return setErrMsg(pCursor, pzErr);
|
||||
}
|
||||
sqlite3_free(pCursor);
|
||||
return SQLITE_OK;
|
||||
}
|
||||
|
||||
char* goVFilter(void *pCursor, int idxNum, char* idxName, int argc, sqlite3_value **argv);
|
||||
|
||||
static int cXFilter(sqlite3_vtab_cursor *pCursor, int idxNum, const char *idxStr, int argc, sqlite3_value **argv) {
|
||||
char *pzErr = goVFilter(((goVTabCursor*)pCursor)->vTabCursor, idxNum, (char*)idxStr, argc, argv);
|
||||
if (pzErr) {
|
||||
return setErrMsg(pCursor, pzErr);
|
||||
}
|
||||
return SQLITE_OK;
|
||||
}
|
||||
|
||||
char* goVNext(void *pCursor);
|
||||
|
||||
static int cXNext(sqlite3_vtab_cursor *pCursor) {
|
||||
char *pzErr = goVNext(((goVTabCursor*)pCursor)->vTabCursor);
|
||||
if (pzErr) {
|
||||
return setErrMsg(pCursor, pzErr);
|
||||
}
|
||||
return SQLITE_OK;
|
||||
}
|
||||
|
||||
int goVEof(void *pCursor);
|
||||
|
||||
static inline int cXEof(sqlite3_vtab_cursor *pCursor) {
|
||||
return goVEof(((goVTabCursor*)pCursor)->vTabCursor);
|
||||
}
|
||||
|
||||
char* goVColumn(void *pCursor, void *cp, int col);
|
||||
|
||||
static int cXColumn(sqlite3_vtab_cursor *pCursor, sqlite3_context *ctx, int i) {
|
||||
char *pzErr = goVColumn(((goVTabCursor*)pCursor)->vTabCursor, ctx, i);
|
||||
if (pzErr) {
|
||||
return setErrMsg(pCursor, pzErr);
|
||||
}
|
||||
return SQLITE_OK;
|
||||
}
|
||||
|
||||
char* goVRowid(void *pCursor, sqlite3_int64 *pRowid);
|
||||
|
||||
static int cXRowid(sqlite3_vtab_cursor *pCursor, sqlite3_int64 *pRowid) {
|
||||
char *pzErr = goVRowid(((goVTabCursor*)pCursor)->vTabCursor, pRowid);
|
||||
if (pzErr) {
|
||||
return setErrMsg(pCursor, pzErr);
|
||||
}
|
||||
return SQLITE_OK;
|
||||
}
|
||||
|
||||
char* goVUpdate(void *pVTab, int argc, sqlite3_value **argv, sqlite3_int64 *pRowid);
|
||||
|
||||
static int cXUpdate(sqlite3_vtab *pVTab, int argc, sqlite3_value **argv, sqlite3_int64 *pRowid) {
|
||||
char *pzErr = goVUpdate(((goVTab*)pVTab)->vTab, argc, argv, pRowid);
|
||||
if (pzErr) {
|
||||
if (pVTab->zErrMsg)
|
||||
sqlite3_free(pVTab->zErrMsg);
|
||||
pVTab->zErrMsg = pzErr;
|
||||
return SQLITE_ERROR;
|
||||
}
|
||||
return SQLITE_OK;
|
||||
}
|
||||
|
||||
static sqlite3_module goModule = {
|
||||
0, // iVersion
|
||||
cXCreate, // xCreate - create a table
|
||||
cXConnect, // xConnect - connect to an existing table
|
||||
cXBestIndex, // xBestIndex - Determine search strategy
|
||||
cXDisconnect, // xDisconnect - Disconnect from a table
|
||||
cXDestroy, // xDestroy - Drop a table
|
||||
cXOpen, // xOpen - open a cursor
|
||||
cXClose, // xClose - close a cursor
|
||||
cXFilter, // xFilter - configure scan constraints
|
||||
cXNext, // xNext - advance a cursor
|
||||
cXEof, // xEof
|
||||
cXColumn, // xColumn - read data
|
||||
cXRowid, // xRowid - read data
|
||||
cXUpdate, // xUpdate - write data
|
||||
// Not implemented
|
||||
0, // xBegin - begin transaction
|
||||
0, // xSync - sync transaction
|
||||
0, // xCommit - commit transaction
|
||||
0, // xRollback - rollback transaction
|
||||
0, // xFindFunction - function overloading
|
||||
0, // xRename - rename the table
|
||||
0, // xSavepoint
|
||||
0, // xRelease
|
||||
0 // xRollbackTo
|
||||
};
|
||||
|
||||
void goMDestroy(void*);
|
||||
|
||||
static int _sqlite3_create_module(sqlite3 *db, const char *zName, uintptr_t pClientData) {
|
||||
return sqlite3_create_module_v2(db, zName, &goModule, (void*) pClientData, goMDestroy);
|
||||
}
|
||||
*/
|
||||
import "C"
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"math"
|
||||
"reflect"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
type sqliteModule struct {
|
||||
c *SQLiteConn
|
||||
name string
|
||||
module Module
|
||||
}
|
||||
|
||||
type sqliteVTab struct {
|
||||
module *sqliteModule
|
||||
vTab VTab
|
||||
}
|
||||
|
||||
type sqliteVTabCursor struct {
|
||||
vTab *sqliteVTab
|
||||
vTabCursor VTabCursor
|
||||
}
|
||||
|
||||
// Op is type of operations.
|
||||
type Op uint8
|
||||
|
||||
// Op mean identity of operations.
|
||||
const (
|
||||
OpEQ Op = 2
|
||||
OpGT = 4
|
||||
OpLE = 8
|
||||
OpLT = 16
|
||||
OpGE = 32
|
||||
OpMATCH = 64
|
||||
OpLIKE = 65 /* 3.10.0 and later only */
|
||||
OpGLOB = 66 /* 3.10.0 and later only */
|
||||
OpREGEXP = 67 /* 3.10.0 and later only */
|
||||
OpScanUnique = 1 /* Scan visits at most 1 row */
|
||||
)
|
||||
|
||||
// InfoConstraint give information of constraint.
|
||||
type InfoConstraint struct {
|
||||
Column int
|
||||
Op Op
|
||||
Usable bool
|
||||
}
|
||||
|
||||
// InfoOrderBy give information of order-by.
|
||||
type InfoOrderBy struct {
|
||||
Column int
|
||||
Desc bool
|
||||
}
|
||||
|
||||
func constraints(info *C.sqlite3_index_info) []InfoConstraint {
|
||||
l := info.nConstraint
|
||||
slice := (*[1 << 30]C.struct_sqlite3_index_constraint)(unsafe.Pointer(info.aConstraint))[:l:l]
|
||||
|
||||
cst := make([]InfoConstraint, 0, l)
|
||||
for _, c := range slice {
|
||||
var usable bool
|
||||
if c.usable > 0 {
|
||||
usable = true
|
||||
}
|
||||
cst = append(cst, InfoConstraint{
|
||||
Column: int(c.iColumn),
|
||||
Op: Op(c.op),
|
||||
Usable: usable,
|
||||
})
|
||||
}
|
||||
return cst
|
||||
}
|
||||
|
||||
func orderBys(info *C.sqlite3_index_info) []InfoOrderBy {
|
||||
l := info.nOrderBy
|
||||
slice := (*[1 << 30]C.struct_sqlite3_index_orderby)(unsafe.Pointer(info.aOrderBy))[:l:l]
|
||||
|
||||
ob := make([]InfoOrderBy, 0, l)
|
||||
for _, c := range slice {
|
||||
var desc bool
|
||||
if c.desc > 0 {
|
||||
desc = true
|
||||
}
|
||||
ob = append(ob, InfoOrderBy{
|
||||
Column: int(c.iColumn),
|
||||
Desc: desc,
|
||||
})
|
||||
}
|
||||
return ob
|
||||
}
|
||||
|
||||
// IndexResult is a Go struct representation of what eventually ends up in the
|
||||
// output fields for `sqlite3_index_info`
|
||||
// See: https://www.sqlite.org/c3ref/index_info.html
|
||||
type IndexResult struct {
|
||||
Used []bool // aConstraintUsage
|
||||
IdxNum int
|
||||
IdxStr string
|
||||
AlreadyOrdered bool // orderByConsumed
|
||||
EstimatedCost float64
|
||||
EstimatedRows float64
|
||||
}
|
||||
|
||||
// mPrintf is a utility wrapper around sqlite3_mprintf
|
||||
func mPrintf(format, arg string) *C.char {
|
||||
cf := C.CString(format)
|
||||
defer C.free(unsafe.Pointer(cf))
|
||||
ca := C.CString(arg)
|
||||
defer C.free(unsafe.Pointer(ca))
|
||||
return C._sqlite3_mprintf(cf, ca)
|
||||
}
|
||||
|
||||
//export goMInit
|
||||
func goMInit(db, pClientData unsafe.Pointer, argc C.int, argv **C.char, pzErr **C.char, isCreate C.int) C.uintptr_t {
|
||||
m := lookupHandle(uintptr(pClientData)).(*sqliteModule)
|
||||
if m.c.db != (*C.sqlite3)(db) {
|
||||
*pzErr = mPrintf("%s", "Inconsistent db handles")
|
||||
return 0
|
||||
}
|
||||
args := make([]string, argc)
|
||||
var A []*C.char
|
||||
slice := reflect.SliceHeader{Data: uintptr(unsafe.Pointer(argv)), Len: int(argc), Cap: int(argc)}
|
||||
a := reflect.NewAt(reflect.TypeOf(A), unsafe.Pointer(&slice)).Elem().Interface()
|
||||
for i, s := range a.([]*C.char) {
|
||||
args[i] = C.GoString(s)
|
||||
}
|
||||
var vTab VTab
|
||||
var err error
|
||||
if isCreate == 1 {
|
||||
vTab, err = m.module.Create(m.c, args)
|
||||
} else {
|
||||
vTab, err = m.module.Connect(m.c, args)
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
*pzErr = mPrintf("%s", err.Error())
|
||||
return 0
|
||||
}
|
||||
vt := sqliteVTab{m, vTab}
|
||||
*pzErr = nil
|
||||
return C.uintptr_t(newHandle(m.c, &vt))
|
||||
}
|
||||
|
||||
//export goVRelease
|
||||
func goVRelease(pVTab unsafe.Pointer, isDestroy C.int) *C.char {
|
||||
vt := lookupHandle(uintptr(pVTab)).(*sqliteVTab)
|
||||
var err error
|
||||
if isDestroy == 1 {
|
||||
err = vt.vTab.Destroy()
|
||||
} else {
|
||||
err = vt.vTab.Disconnect()
|
||||
}
|
||||
if err != nil {
|
||||
return mPrintf("%s", err.Error())
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
//export goVOpen
|
||||
func goVOpen(pVTab unsafe.Pointer, pzErr **C.char) C.uintptr_t {
|
||||
vt := lookupHandle(uintptr(pVTab)).(*sqliteVTab)
|
||||
vTabCursor, err := vt.vTab.Open()
|
||||
if err != nil {
|
||||
*pzErr = mPrintf("%s", err.Error())
|
||||
return 0
|
||||
}
|
||||
vtc := sqliteVTabCursor{vt, vTabCursor}
|
||||
*pzErr = nil
|
||||
return C.uintptr_t(newHandle(vt.module.c, &vtc))
|
||||
}
|
||||
|
||||
//export goVBestIndex
|
||||
func goVBestIndex(pVTab unsafe.Pointer, icp unsafe.Pointer) *C.char {
|
||||
vt := lookupHandle(uintptr(pVTab)).(*sqliteVTab)
|
||||
info := (*C.sqlite3_index_info)(icp)
|
||||
csts := constraints(info)
|
||||
res, err := vt.vTab.BestIndex(csts, orderBys(info))
|
||||
if err != nil {
|
||||
return mPrintf("%s", err.Error())
|
||||
}
|
||||
if len(res.Used) != len(csts) {
|
||||
return mPrintf("Result.Used != expected value", "")
|
||||
}
|
||||
|
||||
// Get a pointer to constraint_usage struct so we can update in place.
|
||||
l := info.nConstraint
|
||||
s := (*[1 << 30]C.struct_sqlite3_index_constraint_usage)(unsafe.Pointer(info.aConstraintUsage))[:l:l]
|
||||
index := 1
|
||||
for i := C.int(0); i < info.nConstraint; i++ {
|
||||
if res.Used[i] {
|
||||
s[i].argvIndex = C.int(index)
|
||||
s[i].omit = C.uchar(1)
|
||||
index++
|
||||
}
|
||||
}
|
||||
|
||||
info.idxNum = C.int(res.IdxNum)
|
||||
idxStr := C.CString(res.IdxStr)
|
||||
defer C.free(unsafe.Pointer(idxStr))
|
||||
info.idxStr = idxStr
|
||||
info.needToFreeIdxStr = C.int(0)
|
||||
if res.AlreadyOrdered {
|
||||
info.orderByConsumed = C.int(1)
|
||||
}
|
||||
info.estimatedCost = C.double(res.EstimatedCost)
|
||||
info.estimatedRows = C.sqlite3_int64(res.EstimatedRows)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
//export goVClose
|
||||
func goVClose(pCursor unsafe.Pointer) *C.char {
|
||||
vtc := lookupHandle(uintptr(pCursor)).(*sqliteVTabCursor)
|
||||
err := vtc.vTabCursor.Close()
|
||||
if err != nil {
|
||||
return mPrintf("%s", err.Error())
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
//export goMDestroy
|
||||
func goMDestroy(pClientData unsafe.Pointer) {
|
||||
m := lookupHandle(uintptr(pClientData)).(*sqliteModule)
|
||||
m.module.DestroyModule()
|
||||
}
|
||||
|
||||
//export goVFilter
|
||||
func goVFilter(pCursor unsafe.Pointer, idxNum C.int, idxName *C.char, argc C.int, argv **C.sqlite3_value) *C.char {
|
||||
vtc := lookupHandle(uintptr(pCursor)).(*sqliteVTabCursor)
|
||||
args := (*[(math.MaxInt32 - 1) / unsafe.Sizeof((*C.sqlite3_value)(nil))]*C.sqlite3_value)(unsafe.Pointer(argv))[:argc:argc]
|
||||
vals := make([]interface{}, 0, argc)
|
||||
for _, v := range args {
|
||||
conv, err := callbackArgGeneric(v)
|
||||
if err != nil {
|
||||
return mPrintf("%s", err.Error())
|
||||
}
|
||||
vals = append(vals, conv.Interface())
|
||||
}
|
||||
err := vtc.vTabCursor.Filter(int(idxNum), C.GoString(idxName), vals)
|
||||
if err != nil {
|
||||
return mPrintf("%s", err.Error())
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
//export goVNext
|
||||
func goVNext(pCursor unsafe.Pointer) *C.char {
|
||||
vtc := lookupHandle(uintptr(pCursor)).(*sqliteVTabCursor)
|
||||
err := vtc.vTabCursor.Next()
|
||||
if err != nil {
|
||||
return mPrintf("%s", err.Error())
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
//export goVEof
|
||||
func goVEof(pCursor unsafe.Pointer) C.int {
|
||||
vtc := lookupHandle(uintptr(pCursor)).(*sqliteVTabCursor)
|
||||
err := vtc.vTabCursor.EOF()
|
||||
if err {
|
||||
return 1
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
//export goVColumn
|
||||
func goVColumn(pCursor, cp unsafe.Pointer, col C.int) *C.char {
|
||||
vtc := lookupHandle(uintptr(pCursor)).(*sqliteVTabCursor)
|
||||
c := (*SQLiteContext)(cp)
|
||||
err := vtc.vTabCursor.Column(c, int(col))
|
||||
if err != nil {
|
||||
return mPrintf("%s", err.Error())
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
//export goVRowid
|
||||
func goVRowid(pCursor unsafe.Pointer, pRowid *C.sqlite3_int64) *C.char {
|
||||
vtc := lookupHandle(uintptr(pCursor)).(*sqliteVTabCursor)
|
||||
rowid, err := vtc.vTabCursor.Rowid()
|
||||
if err != nil {
|
||||
return mPrintf("%s", err.Error())
|
||||
}
|
||||
*pRowid = C.sqlite3_int64(rowid)
|
||||
return nil
|
||||
}
|
||||
|
||||
//export goVUpdate
|
||||
func goVUpdate(pVTab unsafe.Pointer, argc C.int, argv **C.sqlite3_value, pRowid *C.sqlite3_int64) *C.char {
|
||||
vt := lookupHandle(uintptr(pVTab)).(*sqliteVTab)
|
||||
|
||||
var tname string
|
||||
if n, ok := vt.vTab.(interface {
|
||||
TableName() string
|
||||
}); ok {
|
||||
tname = n.TableName() + " "
|
||||
}
|
||||
|
||||
err := fmt.Errorf("virtual %s table %sis read-only", vt.module.name, tname)
|
||||
if v, ok := vt.vTab.(VTabUpdater); ok {
|
||||
// convert argv
|
||||
args := (*[(math.MaxInt32 - 1) / unsafe.Sizeof((*C.sqlite3_value)(nil))]*C.sqlite3_value)(unsafe.Pointer(argv))[:argc:argc]
|
||||
vals := make([]interface{}, 0, argc)
|
||||
for _, v := range args {
|
||||
conv, err := callbackArgGeneric(v)
|
||||
if err != nil {
|
||||
return mPrintf("%s", err.Error())
|
||||
}
|
||||
|
||||
// work around for SQLITE_NULL
|
||||
x := conv.Interface()
|
||||
if z, ok := x.([]byte); ok && z == nil {
|
||||
x = nil
|
||||
}
|
||||
|
||||
vals = append(vals, x)
|
||||
}
|
||||
|
||||
switch {
|
||||
case argc == 1:
|
||||
err = v.Delete(vals[0])
|
||||
|
||||
case argc > 1 && vals[0] == nil:
|
||||
var id int64
|
||||
id, err = v.Insert(vals[1], vals[2:])
|
||||
if err == nil {
|
||||
*pRowid = C.sqlite3_int64(id)
|
||||
}
|
||||
|
||||
case argc > 1:
|
||||
err = v.Update(vals[1], vals[2:])
|
||||
}
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
return mPrintf("%s", err.Error())
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Module is a "virtual table module", it defines the implementation of a
|
||||
// virtual tables. See: http://sqlite.org/c3ref/module.html
|
||||
type Module interface {
|
||||
// http://sqlite.org/vtab.html#xcreate
|
||||
Create(c *SQLiteConn, args []string) (VTab, error)
|
||||
// http://sqlite.org/vtab.html#xconnect
|
||||
Connect(c *SQLiteConn, args []string) (VTab, error)
|
||||
// http://sqlite.org/c3ref/create_module.html
|
||||
DestroyModule()
|
||||
}
|
||||
|
||||
// VTab describes a particular instance of the virtual table.
|
||||
// See: http://sqlite.org/c3ref/vtab.html
|
||||
type VTab interface {
|
||||
// http://sqlite.org/vtab.html#xbestindex
|
||||
BestIndex([]InfoConstraint, []InfoOrderBy) (*IndexResult, error)
|
||||
// http://sqlite.org/vtab.html#xdisconnect
|
||||
Disconnect() error
|
||||
// http://sqlite.org/vtab.html#sqlite3_module.xDestroy
|
||||
Destroy() error
|
||||
// http://sqlite.org/vtab.html#xopen
|
||||
Open() (VTabCursor, error)
|
||||
}
|
||||
|
||||
// VTabUpdater is a type that allows a VTab to be inserted, updated, or
|
||||
// deleted.
|
||||
// See: https://sqlite.org/vtab.html#xupdate
|
||||
type VTabUpdater interface {
|
||||
Delete(interface{}) error
|
||||
Insert(interface{}, []interface{}) (int64, error)
|
||||
Update(interface{}, []interface{}) error
|
||||
}
|
||||
|
||||
// VTabCursor describes cursors that point into the virtual table and are used
|
||||
// to loop through the virtual table. See: http://sqlite.org/c3ref/vtab_cursor.html
|
||||
type VTabCursor interface {
|
||||
// http://sqlite.org/vtab.html#xclose
|
||||
Close() error
|
||||
// http://sqlite.org/vtab.html#xfilter
|
||||
Filter(idxNum int, idxStr string, vals []interface{}) error
|
||||
// http://sqlite.org/vtab.html#xnext
|
||||
Next() error
|
||||
// http://sqlite.org/vtab.html#xeof
|
||||
EOF() bool
|
||||
// http://sqlite.org/vtab.html#xcolumn
|
||||
Column(c *SQLiteContext, col int) error
|
||||
// http://sqlite.org/vtab.html#xrowid
|
||||
Rowid() (int64, error)
|
||||
}
|
||||
|
||||
// DeclareVTab declares the Schema of a virtual table.
|
||||
// See: http://sqlite.org/c3ref/declare_vtab.html
|
||||
func (c *SQLiteConn) DeclareVTab(sql string) error {
|
||||
zSQL := C.CString(sql)
|
||||
defer C.free(unsafe.Pointer(zSQL))
|
||||
rv := C.sqlite3_declare_vtab(c.db, zSQL)
|
||||
if rv != C.SQLITE_OK {
|
||||
return c.lastError()
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// CreateModule registers a virtual table implementation.
|
||||
// See: http://sqlite.org/c3ref/create_module.html
|
||||
func (c *SQLiteConn) CreateModule(moduleName string, module Module) error {
|
||||
mname := C.CString(moduleName)
|
||||
defer C.free(unsafe.Pointer(mname))
|
||||
udm := sqliteModule{c, moduleName, module}
|
||||
rv := C._sqlite3_create_module(c.db, mname, C.uintptr_t(newHandle(c, &udm)))
|
||||
if rv != C.SQLITE_OK {
|
||||
return c.lastError()
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
@ -1,9 +0,0 @@
|
|||
// +build !trace
|
||||
|
||||
package sqlite3
|
||||
|
||||
import "errors"
|
||||
|
||||
func (c *SQLiteConn) RegisterAggregator(name string, impl interface{}, pure bool) error {
|
||||
return errors.New("This feature is not implemented")
|
||||
}
|
||||
|
|
@ -690,10 +690,10 @@
|
|||
"revisionTime": "2017-02-23T14:12:10Z"
|
||||
},
|
||||
{
|
||||
"checksumSHA1": "9FJUwn3EIgASVki+p8IHgWVC5vQ=",
|
||||
"checksumSHA1": "61HNjGetaBoMp8HBOpuEZRSim8g=",
|
||||
"path": "github.com/mattn/go-sqlite3",
|
||||
"revision": "86681de00adef4f8040947b7d35f97000fc5a230",
|
||||
"revisionTime": "2016-10-28T14:22:18Z"
|
||||
"revision": "acfa60124032040b9f5a9406f5a772ee16fe845e",
|
||||
"revisionTime": "2017-07-05T08:25:03Z"
|
||||
},
|
||||
{
|
||||
"checksumSHA1": "9mjAkIoPrJdiGcR0pBa81NoFY4U=",
|
||||
|
|
|
|||
Loading…
Reference in New Issue