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OrmCore.go
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OrmCore.go
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package ormann
import (
"log"
"reflect"
)
type ormCore struct {
storage OrmStorage
parameters ormCoreParameters
registry ormTypeRegistry
cache map[string]OrmObject //TBD
}
var core *ormCore
/*
ORM Core
*/
func Core() *ormCore {
if core == nil {
core = new(ormCore)
core.init()
}
return core
}
/*
Initialization
*/
func (core *ormCore) init() {
core.parameters = make(ormCoreParameters)
core.registry = make(ormTypeRegistry)
core.cache = make(map[string]OrmObject)
}
func (core *ormCore) SetParam(name, value string) *ormCore {
core.parameters[name] = value
return core //method chaining
}
/*
Startup
*/
func (core *ormCore) Go() {
storage_type, ok := core.parameters["storage"]
if !ok {
panic("\"storage\" parameter not set")
}
if storage_type == "mysql" {
//core.storage = &OrmMysqlStorage{}
core.storage = new(OrmMysqlStorage)
core.storage.Connect(&core.parameters)
log.Println("Connected to ORM storage")
} else {
panic("unknown storage type")
}
}
/*
Shutdown
*/
func (core *ormCore) Shutdown() {
if core.storage != nil {
if core.storage.IsConnected() {
core.storage.Disconnect()
core.storage = nil
}
}
}
/*
OrmStorage returns connected storage or dies
*/
func (core *ormCore) s() OrmStorage {
if core.storage == nil {
core.Go()
return core.storage
}
if !core.storage.IsConnected() {
core.storage.Connect(&core.parameters)
return core.storage
}
return core.storage
}
func (core *ormCore) registerOrmType(nilPointer interface{}, idFieldName, tableName string, fieldNames []string) (name string) {
name = reflect.TypeOf(nilPointer).Elem().String()
t := core.searchOrmType(name)
if t == nil {
if len(tableName) == 0 {
panic("no table name")
}
if len(fieldNames) == 0 {
panic("no fields")
}
if len(idFieldName) == 0 {
idFieldName = "ID"
}
newOrmType := ormType{
IdFieldName: idFieldName,
TableName: tableName,
FieldNames: fieldNames,
}
core.registry[name] = &newOrmType
}
return name
}
func (core *ormCore) searchOrmType(name string) (t *ormType) {
t, ok := core.registry[name]
if !ok {
return nil
}
return t
}
func (core *ormCore) getOrmType(name string) (t *ormType) {
t = core.searchOrmType(name)
if t == nil {
panic(name + "ORM type not registered")
}
return t
}