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);
}
}
public function queryCount(Select $aSelect, $sColumn = '*', SqlCompiler $aSqlCompiler = null)
{
$arrRawSelect =& $aSelect->rawClause(SQL::CLAUSE_SELECT);
$arrReturnsBak =& $arrRawSelect['subtree'];
$arrTmp = array("count({$sColumn}) as rowCount");
$arrRawSelect['subtree'] =& $arrTmp;
try {
$aRecords = $this->query($aSelect, null, $aSqlCompiler);
} catch (\Exception $e) {
}
//} final {
$arrRawSelect['subtree'] =& $arrReturnsBak;
//}
if (isset($e)) {
throw $e;
}
if ($aRecords) {
$arrRow = $aRecords->fetch(\PDO::FETCH_ASSOC);
return intval($arrRow['rowCount']);
} else {
return 0;
}
}