78 lines
1.8 KiB
Go
78 lines
1.8 KiB
Go
package xorm
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import (
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"errors"
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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/lunny/xorm/caches"
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"github.com/lunny/xorm/core"
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_ "github.com/lunny/xorm/dialects"
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_ "github.com/lunny/xorm/drivers"
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)
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const (
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Version string = "0.3.1"
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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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// 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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driver := core.QueryDriver(driverName)
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if driver == nil {
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return nil, errors.New(fmt.Sprintf("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, errors.New(fmt.Sprintf("Unsupported dialect type: %v", uri.DbType))
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}
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err = dialect.Init(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{DriverName: driverName,
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DataSourceName: dataSourceName, dialect: dialect,
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tableCachers: make(map[reflect.Type]core.Cacher)}
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engine.SetMapper(core.SnakeMapper{})
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engine.Filters = dialect.Filters()
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engine.Tables = make(map[reflect.Type]*core.Table)
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engine.mutex = &sync.Mutex{}
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engine.TagIdentifier = "xorm"
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engine.Logger = os.Stdout
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//engine.Pool = NewSimpleConnectPool()
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//engine.Pool = NewNoneConnectPool()
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//engine.Cacher = NewLRUCacher()
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err = engine.SetPool(NewSysConnectPool())
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runtime.SetFinalizer(engine, close)
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return engine, err
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}
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func NewLRUCacher(store core.CacheStore, max int) *caches.LRUCacher {
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return caches.NewLRUCacher(store, core.CacheExpired, core.CacheMaxMemory, max)
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}
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func NewLRUCacher2(store core.CacheStore, expired time.Duration, max int) *caches.LRUCacher {
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return caches.NewLRUCacher(store, expired, 0, max)
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}
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