public function execute(DB $aDB, Model $aModel)
{
$aPrototype = $aModel->prototype();
$aDelete = new Delete($aPrototype->tableName());
// 设置limit
$aDelete->criteria()->setLimit(1);
// delete 当前model
foreach ($aPrototype->keys() as $sClmName) {
if ($aModel->changed($sClmName)) {
//主键发生修改
throw new ORMException('org\\jecat\\framework\\mvc\\model\\db\\orm\\Updater : Key 有修改，无法进行Delete操作');
} else {
//用主键作为查询条件
$aDelete->criteria()->where()->expression(array(SQL::createRawColumn(null, $sClmName), '=', SQL::transValue($aModel->data($sClmName))), true, true);
}
}
$aDB->execute($aDelete);
// 仅delete hasAndBelongsTo的桥表
foreach ($aPrototype->associations() as $aAssociation) {
$aAssociatedModel = $aModel->child($aAssociation->name());
if (!$aAssociatedModel) {
continue;
}
switch ($aAssociation->type()) {
case Association::hasOne:
$this->setAssociatedModelData($aModel, $aAssociatedModel, $aAssociation->fromKeys(), $aAssociation->toKeys());
if (!$aAssociatedModel->delete()) {
return false;
}
break;
case Association::belongsTo:
// nothing todo ...
break;
case Association::hasMany:
$this->setAssociatedModelData($aModel, $aAssociatedModel, $aAssociation->fromKeys(), $aAssociation->toKeys());
if (!$aAssociatedModel->delete()) {
return false;
}
break;
case Association::hasAndBelongsToMany:
// delete bridge table
foreach ($aAssociatedModel->childIterator() as $aOneChildModel) {
$this->deleteBridge($aDB, $aAssociation, $aModel, $aOneChildModel);
}
break;
}
}
return true;
}
