105 lines
3.2 KiB
Go
105 lines
3.2 KiB
Go
// Copyright 2015 The Xorm Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package xorm
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import (
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"fmt"
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"os"
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"reflect"
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"runtime"
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"sync"
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"time"
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"github.com/go-xorm/core"
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)
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const (
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// Version show the xorm's version
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Version string = "0.6.2.0412"
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)
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func regDrvsNDialects() bool {
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providedDrvsNDialects := map[string]struct {
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dbType core.DbType
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getDriver func() core.Driver
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getDialect func() core.Dialect
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}{
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"mssql": {"mssql", func() core.Driver { return &odbcDriver{} }, func() core.Dialect { return &mssql{} }},
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"odbc": {"mssql", func() core.Driver { return &odbcDriver{} }, func() core.Dialect { return &mssql{} }}, // !nashtsai! TODO change this when supporting MS Access
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"mysql": {"mysql", func() core.Driver { return &mysqlDriver{} }, func() core.Dialect { return &mysql{} }},
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"mymysql": {"mysql", func() core.Driver { return &mymysqlDriver{} }, func() core.Dialect { return &mysql{} }},
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"postgres": {"postgres", func() core.Driver { return &pqDriver{} }, func() core.Dialect { return &postgres{} }},
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"pgx": {"postgres", func() core.Driver { return &pqDriver{} }, func() core.Dialect { return &postgres{} }},
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"sqlite3": {"sqlite3", func() core.Driver { return &sqlite3Driver{} }, func() core.Dialect { return &sqlite3{} }},
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"oci8": {"oracle", func() core.Driver { return &oci8Driver{} }, func() core.Dialect { return &oracle{} }},
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"goracle": {"oracle", func() core.Driver { return &goracleDriver{} }, func() core.Dialect { return &oracle{} }},
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}
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for driverName, v := range providedDrvsNDialects {
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if driver := core.QueryDriver(driverName); driver == nil {
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core.RegisterDriver(driverName, v.getDriver())
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core.RegisterDialect(v.dbType, v.getDialect)
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}
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}
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return true
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}
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func close(engine *Engine) {
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engine.Close()
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}
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// NewEngine new a db manager according to the parameter. Currently support four
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// drivers
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func NewEngine(driverName string, dataSourceName string) (*Engine, error) {
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regDrvsNDialects()
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driver := core.QueryDriver(driverName)
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if driver == nil {
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return nil, fmt.Errorf("Unsupported driver name: %v", driverName)
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}
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uri, err := driver.Parse(driverName, dataSourceName)
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if err != nil {
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return nil, err
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}
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dialect := core.QueryDialect(uri.DbType)
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if dialect == nil {
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return nil, fmt.Errorf("Unsupported dialect type: %v", uri.DbType)
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}
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db, err := core.Open(driverName, dataSourceName)
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if err != nil {
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return nil, err
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}
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err = dialect.Init(db, uri, driverName, dataSourceName)
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if err != nil {
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return nil, err
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}
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engine := &Engine{
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db: db,
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dialect: dialect,
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Tables: make(map[reflect.Type]*core.Table),
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mutex: &sync.RWMutex{},
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TagIdentifier: "xorm",
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TZLocation: time.Local,
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tagHandlers: defaultTagHandlers,
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}
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logger := NewSimpleLogger(os.Stdout)
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logger.SetLevel(core.LOG_INFO)
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engine.SetLogger(logger)
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engine.SetMapper(core.NewCacheMapper(new(core.SnakeMapper)))
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runtime.SetFinalizer(engine, close)
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return engine, nil
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}
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// Clone clone an engine
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func (engine *Engine) Clone() (*Engine, error) {
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return NewEngine(engine.DriverName(), engine.DataSourceName())
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}
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