protected function deleteBridge(DB $aDB, Association $aAssociation, Model $aFromModel, Model $aToModel)
{
$aStatementFactory = $aAssociation->fromPrototype()->statementFactory();
$aDeleteForBridge = $aStatementFactory->createDelete($aAssociation->bridgeTableName());
$aDeleteForBridge->criteria()->where()->add($this->makeRestrictionForAssocotion($aFromModel, $aAssociation->fromKeys(), null, $aAssociation->toBridgeKeys(), $aStatementFactory));
$aDB->execute($aDeleteForBridge);
}
private function queryForMultitermAssoc(DB $aDB, Association $aMultitermAssoc, array &$arrDataSheet, $nRowIdx)
{
$aToPrototype = $aMultitermAssoc->toPrototype();
$aFromPrototype = $aMultitermAssoc->fromPrototype();
// 根据上一轮查询设置条件
if ($aMultitermAssoc->isType(Association::hasMany)) {
$aRestraction = $this->makeResrictionForAsscotion($arrDataSheet[$nRowIdx], $aFromPrototype->path(), $aMultitermAssoc->fromKeys(), $aToPrototype->sqlTableAlias(), $aMultitermAssoc->toKeys());
} else {
if ($aMultitermAssoc->isType(Association::hasAndBelongsToMany)) {
$aRestraction = $this->makeResrictionForAsscotion($arrDataSheet[$nRowIdx], $aFromPrototype->path(), $aMultitermAssoc->fromKeys(), $aMultitermAssoc->bridgeSqlTableAlias(), $aMultitermAssoc->toBridgeKeys());
} else {
throw new ORMException("what's this?");
}
}
// 新建的一个记录表
$sheet =& Model::dataSheet($arrDataSheet, $nRowIdx, $aToPrototype->name(), true);
$this->execute($aToPrototype, $sheet, $aRestraction, array($aToPrototype->limitLength(), $aToPrototype->limitFrom()), $aDB);
}
protected function buildBridge(DB $aDB, Association $aAssociation, Model $aFromModel, Model $aToModel)
{
$aFromPrototype = $aAssociation->fromPrototype();
$aSelect = new Select($aAssociation->bridgeTableName());
$aRestraction = $aSelect->criteria()->where();
$this->makeResrictionForAsscotion($aRestraction, $aFromPrototype->path(), $aAssociation->fromKeys(), null, $aAssociation->toBridgeKeys());
$this->makeResrictionForAsscotion($aRestraction, $aAssociation->toPrototype()->path(), $aAssociation->toKeys(), null, $aAssociation->fromBridgeKeys());
// 检查对应的桥接表记录是否存在
if (!$aDB->queryCount($aSelect)) {
$aInsertForBridge = $aStatementFactory->createInsert($aAssociation->bridgeTableName());
// from table key vale
$this->setValue($aInsertForBridge, $aAssociation->toBridgeKeys(), $aAssociation->fromKeys(), $aFromModel);
// to table key vale
$this->setValue($aInsertForBridge, $aAssociation->fromBridgeKeys(), $aAssociation->toKeys(), $aToModel);
$aDB->execute($aInsertForBridge);
}
}
/**
* $toTable 可以是一个字符串，也可以是一个Prototype对象，表示关联的表。
* @return Association
*/
public function createAssociation($nType, $to, $fromKeys = self::youKnow, $toKeys = self::youKnow, $sBridgeTable = null, $toBridgeKeys = self::youKnow, $fromBridgeKeys = self::youKnow)
{
if (is_string($to)) {
$aToPrototype = self::create($to, self::youKnow, '*', $this->db());
} else {
if ($to instanceof Prototype) {
$aToPrototype = $to;
if ($aToPrototype->aAssociatedBy !== null) {
throw new Exception('函数 Prototype::createAssociation() 的参数 $to 已经被关联，不能再关联到其他原型');
}
} else {
throw new Exception('函数 Prototype::createAssociation() 的参数 $to 必须是数据表名称或Prototype对象');
}
}
$aAsso = new Association($this->db(), $nType, $this, $aToPrototype, $fromKeys, $toKeys, $sBridgeTable, $toBridgeKeys, $fromBridgeKeys);
$this->arrAssociations[] = $aAsso;
$aToPrototype->aAssociatedBy = $aAsso;
return $aAsso->toPrototype();
}
