README
¶
go-sqlite3
Description
sqlite3 driver conforming to the built-in database/sql interface
Installation
This package can be installed with the go get command:
go get github.com/mattn/go-sqlite3
Documentation
API documentation can be found here: http://godoc.org/github.com/mattn/go-sqlite3
Examples can be found under the ./_example directory
FAQ
-
Can't build go-sqlite3 on windows 64bit.
Probably, you are using go 1.0, go1.0 has a problem when it comes to compiling/linking on windows 64bit. See: https://github.com/mattn/go-sqlite3/issues/27
-
Getting insert error while query is opened.
You can pass some arguments into the connection string, for example, a URI. See: https://github.com/mattn/go-sqlite3/issues/39
-
Do you want cross compiling? mingw on Linux or Mac?
See: https://github.com/mattn/go-sqlite3/issues/106 See also: http://www.limitlessfx.com/cross-compile-golang-app-for-windows-from-linux.html
-
Want to get time.Time with current locale
Use
loc=autoin SQLite3 filename schema likefile:foo.db?loc=auto.
License
MIT: http://mattn.mit-license.org/2012
sqlite3-binding.c, sqlite3-binding.h, sqlite3ext.h
The -binding suffix was added to avoid build failures under gccgo.
In this repository, those files are amalgamation code that copied from SQLite3. The license of those codes are depend on the license of SQLite3.
Author
Yasuhiro Matsumoto (a.k.a mattn)
Documentation
¶
Overview ¶
Package sqlite3 provides interface to SQLite3 databases.
This works as driver for database/sql.
Installation
go get github.com/mattn/go-sqlite3
Supported Types ¶
Currently, go-sqlite3 support following data types.
+------------------------------+ |go | sqlite3 | |----------|-------------------| |nil | null | |int | integer | |int64 | integer | |float64 | float | |bool | integer | |[]byte | blob | |string | text | |time.Time | timestamp/datetime| +------------------------------+
SQLite3 Extension ¶
You can write your own extension module for sqlite3. For example, below is a extension for Regexp matcher operation.
#include <pcre.h>
#include <string.h>
#include <stdio.h>
#include <sqlite3ext.h>
SQLITE_EXTENSION_INIT1
static void regexp_func(sqlite3_context *context, int argc, sqlite3_value **argv) {
if (argc >= 2) {
const char *target = (const char *)sqlite3_value_text(argv[1]);
const char *pattern = (const char *)sqlite3_value_text(argv[0]);
const char* errstr = NULL;
int erroff = 0;
int vec[500];
int n, rc;
pcre* re = pcre_compile(pattern, 0, &errstr, &erroff, NULL);
rc = pcre_exec(re, NULL, target, strlen(target), 0, 0, vec, 500);
if (rc <= 0) {
sqlite3_result_error(context, errstr, 0);
return;
}
sqlite3_result_int(context, 1);
}
}
#ifdef _WIN32
__declspec(dllexport)
#endif
int sqlite3_extension_init(sqlite3 *db, char **errmsg,
const sqlite3_api_routines *api) {
SQLITE_EXTENSION_INIT2(api);
return sqlite3_create_function(db, "regexp", 2, SQLITE_UTF8,
(void*)db, regexp_func, NULL, NULL);
}
It need to build as so/dll shared library. And you need to register extension module like below.
sql.Register("sqlite3_with_extensions",
&sqlite3.SQLiteDriver{
Extensions: []string{
"sqlite3_mod_regexp",
},
})
Then, you can use this extension.
rows, err := db.Query("select text from mytable where name regexp '^golang'")
Connection Hook ¶
You can hook and inject your codes when connection established. database/sql doesn't provide the way to get native go-sqlite3 interfaces. So if you want, you need to hook ConnectHook and get the SQLiteConn.
sql.Register("sqlite3_with_hook_example",
&sqlite3.SQLiteDriver{
ConnectHook: func(conn *sqlite3.SQLiteConn) error {
sqlite3conn = append(sqlite3conn, conn)
return nil
},
})
Index ¶
- Constants
- Variables
- func Version() (libVersion string, libVersionNumber int, sourceId string)
- type ErrNo
- type ErrNoExtended
- type Error
- type SQLiteBackup
- type SQLiteConn
- func (c *SQLiteConn) AutoCommit() bool
- func (c *SQLiteConn) Backup(dest string, conn *SQLiteConn, src string) (*SQLiteBackup, error)
- func (c *SQLiteConn) Begin() (driver.Tx, error)
- func (c *SQLiteConn) Close() error
- func (c *SQLiteConn) Exec(query string, args []driver.Value) (driver.Result, error)
- func (c *SQLiteConn) Prepare(query string) (driver.Stmt, error)
- func (c *SQLiteConn) Query(query string, args []driver.Value) (driver.Rows, error)
- type SQLiteDriver
- type SQLiteResult
- type SQLiteRows
- type SQLiteStmt
- type SQLiteTx
Constants ¶
const ErrNoMask C.int = 0xff
Variables ¶
var ( ErrError = ErrNo(1) /* SQL error or missing database */ ErrInternal = ErrNo(2) /* Internal logic error in SQLite */ ErrPerm = ErrNo(3) /* Access permission denied */ ErrAbort = ErrNo(4) /* Callback routine requested an abort */ ErrBusy = ErrNo(5) /* The database file is locked */ ErrLocked = ErrNo(6) /* A table in the database is locked */ ErrNomem = ErrNo(7) /* A malloc() failed */ ErrReadonly = ErrNo(8) /* Attempt to write a readonly database */ ErrInterrupt = ErrNo(9) /* Operation terminated by sqlite3_interrupt() */ ErrIoErr = ErrNo(10) /* Some kind of disk I/O error occurred */ ErrCorrupt = ErrNo(11) /* The database disk image is malformed */ ErrNotFound = ErrNo(12) /* Unknown opcode in sqlite3_file_control() */ ErrFull = ErrNo(13) /* Insertion failed because database is full */ ErrCantOpen = ErrNo(14) /* Unable to open the database file */ ErrProtocol = ErrNo(15) /* Database lock protocol error */ ErrEmpty = ErrNo(16) /* Database is empty */ ErrSchema = ErrNo(17) /* The database schema changed */ ErrTooBig = ErrNo(18) /* String or BLOB exceeds size limit */ ErrConstraint = ErrNo(19) /* Abort due to constraint violation */ ErrMismatch = ErrNo(20) /* Data type mismatch */ ErrMisuse = ErrNo(21) /* Library used incorrectly */ ErrNoLFS = ErrNo(22) /* Uses OS features not supported on host */ ErrAuth = ErrNo(23) /* Authorization denied */ ErrFormat = ErrNo(24) /* Auxiliary database format error */ ErrRange = ErrNo(25) /* 2nd parameter to sqlite3_bind out of range */ ErrNotADB = ErrNo(26) /* File opened that is not a database file */ ErrNotice = ErrNo(27) /* Notifications from sqlite3_log() */ ErrWarning = ErrNo(28) /* Warnings from sqlite3_log() */ )
result codes from http://www.sqlite.org/c3ref/c_abort.html
var ( ErrIoErrRead = ErrIoErr.Extend(1) ErrIoErrShortRead = ErrIoErr.Extend(2) ErrIoErrWrite = ErrIoErr.Extend(3) ErrIoErrFsync = ErrIoErr.Extend(4) ErrIoErrDirFsync = ErrIoErr.Extend(5) ErrIoErrTruncate = ErrIoErr.Extend(6) ErrIoErrFstat = ErrIoErr.Extend(7) ErrIoErrUnlock = ErrIoErr.Extend(8) ErrIoErrRDlock = ErrIoErr.Extend(9) ErrIoErrDelete = ErrIoErr.Extend(10) ErrIoErrBlocked = ErrIoErr.Extend(11) ErrIoErrNoMem = ErrIoErr.Extend(12) ErrIoErrAccess = ErrIoErr.Extend(13) ErrIoErrCheckReservedLock = ErrIoErr.Extend(14) ErrIoErrLock = ErrIoErr.Extend(15) ErrIoErrClose = ErrIoErr.Extend(16) ErrIoErrDirClose = ErrIoErr.Extend(17) ErrIoErrSHMOpen = ErrIoErr.Extend(18) ErrIoErrSHMSize = ErrIoErr.Extend(19) ErrIoErrSHMLock = ErrIoErr.Extend(20) ErrIoErrSHMMap = ErrIoErr.Extend(21) ErrIoErrSeek = ErrIoErr.Extend(22) ErrIoErrDeleteNoent = ErrIoErr.Extend(23) ErrIoErrMMap = ErrIoErr.Extend(24) ErrIoErrGetTempPath = ErrIoErr.Extend(25) ErrIoErrConvPath = ErrIoErr.Extend(26) ErrBusyRecovery = ErrBusy.Extend(1) ErrBusySnapshot = ErrBusy.Extend(2) ErrCantOpenNoTempDir = ErrCantOpen.Extend(1) ErrCantOpenIsDir = ErrCantOpen.Extend(2) ErrCantOpenFullPath = ErrCantOpen.Extend(3) ErrCantOpenConvPath = ErrCantOpen.Extend(4) ErrCorruptVTab = ErrCorrupt.Extend(1) ErrReadonlyRecovery = ErrReadonly.Extend(1) ErrReadonlyCantLock = ErrReadonly.Extend(2) ErrReadonlyRollback = ErrReadonly.Extend(3) ErrReadonlyDbMoved = ErrReadonly.Extend(4) ErrAbortRollback = ErrAbort.Extend(2) ErrConstraintCheck = ErrConstraint.Extend(1) ErrConstraintCommitHook = ErrConstraint.Extend(2) ErrConstraintForeignKey = ErrConstraint.Extend(3) ErrConstraintFunction = ErrConstraint.Extend(4) ErrConstraintNotNull = ErrConstraint.Extend(5) ErrConstraintPrimaryKey = ErrConstraint.Extend(6) ErrConstraintTrigger = ErrConstraint.Extend(7) ErrConstraintUnique = ErrConstraint.Extend(8) ErrConstraintVTab = ErrConstraint.Extend(9) ErrConstraintRowId = ErrConstraint.Extend(10) ErrNoticeRecoverWAL = ErrNotice.Extend(1) ErrNoticeRecoverRollback = ErrNotice.Extend(2) ErrWarningAutoIndex = ErrWarning.Extend(1) )
result codes from http://www.sqlite.org/c3ref/c_abort_rollback.html
var SQLiteTimestampFormats = []string{
"2006-01-02 15:04:05.999999999",
"2006-01-02T15:04:05.999999999",
"2006-01-02 15:04:05",
"2006-01-02T15:04:05",
"2006-01-02 15:04",
"2006-01-02T15:04",
"2006-01-02",
"2006-01-02 15:04:05-07:00",
}
Timestamp formats understood by both this module and SQLite. The first format in the slice will be used when saving time values into the database. When parsing a string from a timestamp or datetime column, the formats are tried in order.
Functions ¶
Types ¶
type ErrNoExtended ¶
type ErrNoExtended int
func (ErrNoExtended) Error ¶
func (err ErrNoExtended) Error() string
type Error ¶
type Error struct {
Code ErrNo /* The error code returned by SQLite */
ExtendedCode ErrNoExtended /* The extended error code returned by SQLite */
// contains filtered or unexported fields
}
type SQLiteBackup ¶
type SQLiteBackup struct {
// contains filtered or unexported fields
}
func (*SQLiteBackup) Close ¶
func (b *SQLiteBackup) Close() error
func (*SQLiteBackup) Finish ¶
func (b *SQLiteBackup) Finish() error
func (*SQLiteBackup) PageCount ¶
func (b *SQLiteBackup) PageCount() int
func (*SQLiteBackup) Remaining ¶
func (b *SQLiteBackup) Remaining() int
func (*SQLiteBackup) Step ¶
func (b *SQLiteBackup) Step(p int) (bool, error)
Backs up for one step. Calls the underlying `sqlite3_backup_step` function. This function returns a boolean indicating if the backup is done and an error signalling any other error. Done is returned if the underlying C function returns SQLITE_DONE (Code 101)
type SQLiteConn ¶
type SQLiteConn struct {
// contains filtered or unexported fields
}
Conn struct.
func (*SQLiteConn) AutoCommit ¶
func (c *SQLiteConn) AutoCommit() bool
AutoCommit return which currently auto commit or not.
func (*SQLiteConn) Backup ¶
func (c *SQLiteConn) Backup(dest string, conn *SQLiteConn, src string) (*SQLiteBackup, error)
type SQLiteDriver ¶
type SQLiteDriver struct {
Extensions []string
ConnectHook func(*SQLiteConn) error
}
Driver struct.
func (*SQLiteDriver) Open ¶
func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error)
Open database and return a new connection. You can specify DSN string with URI filename.
test.db file:test.db?cache=shared&mode=memory :memory: file::memory:
go-sqlite handle especially query parameters.
_loc=XXX Specify location of time format. It's possible to specify "auto". _busy_timeout=XXX Specify value for sqlite3_busy_timeout.
type SQLiteResult ¶
type SQLiteResult struct {
// contains filtered or unexported fields
}
Result struct.
func (*SQLiteResult) LastInsertId ¶
func (r *SQLiteResult) LastInsertId() (int64, error)
Return last inserted ID.
func (*SQLiteResult) RowsAffected ¶
func (r *SQLiteResult) RowsAffected() (int64, error)
Return how many rows affected.
type SQLiteStmt ¶
type SQLiteStmt struct {
// contains filtered or unexported fields
}
Stmt struct.
Source Files
Directories