// defines a new value for column returning if the column should provoque a new sql
func (this *DmlCore) defineParameter(col *Column, value Tokener) (interface{}, bool) {
if col.GetTable().GetName() != this.table.GetName() {
panic(col.String() + " does not belong to table " + this.table.String())
}
if this.vals == nil {
this.vals = coll.NewLinkedHashMap()
}
old := this.vals.Put(col, value)
// if it is a parameter remove it
if old != nil {
tok := old.(Tokener)
if value.GetOperator() == TOKEN_PARAM && tok.GetOperator() == TOKEN_PARAM {
/*
Replace one param by another
*/
oldKey := tok.GetValue().(string)
key := value.GetValue().(string)
// change the new param name to the old param name
value.SetValue(tok.GetValue())
val := this.parameters[oldKey]
// update the old value to the new one
this.parameters[oldKey] = this.parameters[key]
// remove the new token
delete(this.parameters, key)
// The replace of one param by another should not trigger a new SQL string
return val, false
} else if tok.GetOperator() == TOKEN_PARAM {
// removes the previous token
delete(this.parameters, tok.GetValue().(string))
}
}
return nil, true
}
func NewAliasBag(prefix string) *AliasBag {
ab := new(AliasBag)
ab.prefix = prefix
ab.counter = 0
ab.bag = coll.NewLinkedHashMap()
return ab
}
func NewInsert(db IDb, table *Table) *Insert {
this := new(Insert)
this.Super(db, table)
this.vals = coll.NewLinkedHashMap()
this.returnId = true
discriminators := table.GetDiscriminators()
// several discriminators, at maximum one for each column
for _, discriminator := range discriminators {
this.Set(discriminator.Column, discriminator.Value)
}
return this
}
func TABLE(name string) *Table {
if name == "" {
panic("Null for table name is not allowed.")
}
this := new(Table).As(dbx.ToCamelCase(name))
this.columnsMap = coll.NewLinkedHashMap()
this.columns = coll.NewLinkedHashSet()
this.keys = coll.NewLinkedHashSet()
this.name = name
AddEntity(this)
return this
}
func (this *Table) AddAssociationAs(name string, fk *Association) *Association {
key := Str(name)
if this.associationMap == nil {
this.associationMap = coll.NewLinkedHashMap()
} else {
if value, ok := this.associationMap.Get(key); ok {
panic(
fmt.Sprintf("An association %s is already mapped to this table (%s) with the key %s",
value, this.Alias, name))
}
}
this.associationMap.Put(key, fk)
return fk
}
package db
import (
coll "github.com/quintans/toolkit/collection"
. "github.com/quintans/toolkit/ext"
"strings"
)
const FK_NAV_SEP = "."
// entity mapping
var Tables = coll.NewLinkedHashMap()
func AddEntity(table *Table) {
Tables.Put(Str(table.Alias), table)
}
func GetLink(chain string) *LinkNav {
idx := strings.Index(chain, FK_NAV_SEP)
var link Str
if idx > 0 {
link = Str(chain[:idx])
} else {
link = Str(chain)
}
o, _ := Tables.Get(link)
table, _ := o.(*Table)
if idx < 0 {
return NewLinkNav(nil, table)
func NewUpdate(db IDb, table *Table) *Update {
this := new(Update)
this.Super(db, table)
this.vals = coll.NewLinkedHashMap()
return this
}
