/**
* DeleteClause ::= "DELETE" ["FROM"] AbstractSchemaName [["AS"] AliasIdentificationVariable]
*/
public function _DeleteClause()
{
$this->match(Lexer::T_DELETE);
if ($this->_lexer->isNextToken(Lexer::T_FROM)) {
$this->match(Lexer::T_FROM);
}
$deleteClause = new AST\DeleteClause($this->_AbstractSchemaName());
if ($this->_lexer->isNextToken(Lexer::T_AS)) {
$this->match(Lexer::T_AS);
}
if ($this->_lexer->isNextToken(Lexer::T_IDENTIFIER)) {
$this->match(Lexer::T_IDENTIFIER);
$deleteClause->setAliasIdentificationVariable($this->_lexer->token['value']);
} else {
$deleteClause->setAliasIdentificationVariable($deleteClause->getAbstractSchemaName());
}
$classMetadata = $this->_em->getClassMetadata($deleteClause->getAbstractSchemaName());
$queryComponent = array('metadata' => $classMetadata);
$this->_queryComponents[$deleteClause->getAliasIdentificationVariable()] = $queryComponent;
return $deleteClause;
}
/**
* Walks down a DeleteClause AST node, thereby generating the appropriate SQL.
*
* @param DeleteClause
* @return string The SQL.
*/
public function walkDeleteClause(AST\DeleteClause $deleteClause)
{
$sql = 'DELETE FROM ';
$class = $this->_em->getClassMetadata($deleteClause->getAbstractSchemaName());
$sql .= $class->getTableName();
if ($this->_useSqlTableAliases) {
$sql .= ' ' . $this->getSqlTableAlias($class->getTableName());
}
$this->_currentRootAlias = $deleteClause->getAliasIdentificationVariable();
return $sql;
}
