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database_manager.go
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database_manager.go
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package goeloquent
import (
"database/sql"
"errors"
"fmt"
"reflect"
)
type DatabaseManager struct {
Connections map[string]*Connection
Factory ConnectionFactory
Configs map[string]*DBConfig
}
func (dm *DatabaseManager) Connection(connectionName string) *Connection {
connection, ok := dm.Connections[connectionName]
if !ok {
dm.Connections[connectionName] = dm.MakeConnection(connectionName)
connection, _ = dm.Connections[connectionName]
}
return connection
}
func (dm *DatabaseManager) Conn(connectionName string) Connection {
return *(dm.Connection(connectionName))
}
func (dm *DatabaseManager) getDefaultConnection() (defaultConnectionName string) {
defaultConnectionName = "default"
return
}
func (dm *DatabaseManager) GetConfig(name string) *DBConfig {
return dm.Configs[name]
}
func (dm *DatabaseManager) MakeConnection(connectionName string) *Connection {
config, ok := dm.Configs[connectionName]
if !ok {
panic(errors.New(fmt.Sprintf("Database connection %s not configured.", connectionName)))
}
conn := dm.Factory.Make(config)
conn.ConnectionName = connectionName
dm.Connections[connectionName] = conn
return conn
}
func (dm *DatabaseManager) Table(params ...string) *Builder {
defaultConn := dm.getDefaultConnection()
c := dm.Connection(defaultConn)
builder := NewBuilder(c)
builder.Grammar = &MysqlGrammar{}
builder.Grammar.SetTablePrefix(dm.Configs[defaultConn].Prefix)
builder.Grammar.SetBuilder(builder)
builder.Table(params...)
return builder
}
func (dm *DatabaseManager) Model(model ...interface{}) *Builder {
if len(model) > 0 {
parsed := GetParsedModel(model[0])
var connectionName string
if len(parsed.ConnectionName) > 0 {
connectionName = parsed.ConnectionName
} else {
connectionName = dm.getDefaultConnection()
}
c := dm.Connection(connectionName)
builder := NewBuilder(c)
builder.Grammar = &MysqlGrammar{}
builder.Grammar.SetTablePrefix(dm.Configs[connectionName].Prefix)
builder.Grammar.SetBuilder(builder)
builder.SetModel(model[0])
return builder
} else {
c := dm.Connection("default")
builder := NewBuilder(c)
builder.Grammar = &MysqlGrammar{}
builder.Grammar.SetBuilder(builder)
return builder
}
}
func (dm *DatabaseManager) Select(query string, bindings []interface{}, dest interface{}) (sql.Result, error) {
ic := dm.Connections["default"]
return (*ic).Select(query, bindings, dest, nil)
}
func (dm *DatabaseManager) Insert(query string, bindings []interface{}) (sql.Result, error) {
ic := dm.Connections["default"]
return (*ic).Insert(query, bindings)
}
func (dm *DatabaseManager) Update(query string, bindings []interface{}) (sql.Result, error) {
ic := dm.Connections["default"]
return (*ic).Update(query, bindings)
}
func (dm *DatabaseManager) Delete(query string, bindings []interface{}) (sql.Result, error) {
ic := dm.Connections["default"]
return (*ic).Delete(query, bindings)
}
func (dm *DatabaseManager) Statement(query string, bindings []interface{}) (sql.Result, error) {
ic := dm.Connections["default"]
return (*ic).Delete(query, bindings)
}
func (dm *DatabaseManager) Query() *Builder {
defaultConn := dm.getDefaultConnection()
c := dm.Connection(defaultConn)
builder := NewBuilder(c)
builder.Grammar = &MysqlGrammar{}
builder.Grammar.SetTablePrefix(dm.Configs[defaultConn].Prefix)
builder.Grammar.SetBuilder(builder)
return builder
}
func (dm *DatabaseManager) Transaction(closure TxClosure) (interface{}, error) {
ic := dm.Connections["default"]
return (*ic).Transaction(closure)
}
func (dm *DatabaseManager) BeginTransaction() (*Transaction, error) {
ic := dm.Connections["default"]
return (*ic).BeginTransaction()
}
func (dm *DatabaseManager) Create(model interface{}) (res sql.Result, err error) {
return dm.Save(model)
}
/*Save
save/update single model
*/
func (dm *DatabaseManager) Save(modelP interface{}) (res sql.Result, err error) {
//TODO: use connection as proxy
//TODO: batch create/update/delete
parsed := GetParsedModel(modelP)
model := reflect.Indirect(reflect.ValueOf(modelP))
if parsed.IsEloquent {
ininted := !model.Field(parsed.PivotFieldIndex[0]).IsZero()
if ininted {
t := model.Field(parsed.PivotFieldIndex[0]).Interface().(*EloquentModel)
return t.Save()
} else {
return InitModel(modelP).Create()
}
} else {
//TODO: save plain struct
}
return
}
func (dm *DatabaseManager) Boot(modelP interface{}) *EloquentModel {
parsed := GetParsedModel(modelP)
model := reflect.Indirect(reflect.ValueOf(modelP))
if parsed.IsEloquent {
ininted := !model.Field(parsed.PivotFieldIndex[0]).IsZero()
if !ininted {
return InitModel(modelP)
}
return model.Field(parsed.PivotFieldIndex[0]).Interface().(*EloquentModel)
}
return nil
}