/**
* load
* returns the parsed query part
*
* @param string $where
* @return string
*/
public function load($where)
{
$where = trim($where);
$conn = $this->query->getConnection();
$e = Doctrine_Tokenizer::sqlExplode($where);
if (count($e) > 1) {
$tmp = $e[0] . ' ' . $e[1];
if (substr($tmp, 0, 6) == 'EXISTS') {
return $this->parseExists($where, true);
} elseif (substr($where, 0, 10) == 'NOT EXISTS') {
return $this->parseExists($where, false);
}
}
if (count($e) < 3) {
$e = Doctrine_Tokenizer::sqlExplode($where, array('=', '<', '>', '!='));
}
$r = array_shift($e);
$a = explode('.', $r);
if (count($a) > 1) {
$field = array_pop($a);
$count = count($e);
$slice = array_slice($e, -1, 1);
$value = implode('', $slice);
$operator = trim(substr($where, strlen($r), -strlen($value)));
$reference = implode('.', $a);
$count = count($a);
$pos = strpos($field, '(');
if ($pos !== false) {
$func = substr($field, 0, $pos);
$value = trim(substr($field, $pos + 1, -1));
$values = Doctrine_Query::sqlExplode($value, ',');
$field = array_pop($a);
$reference = implode('.', $a);
$table = $this->query->load($reference, false);
$field = $table->getColumnName($field);
array_pop($a);
$reference2 = implode('.', $a);
$alias = $this->query->getTableAlias($reference2);
$stack = $this->query->getRelationStack();
$relation = end($stack);
$stack = $this->query->getTableStack();
switch ($func) {
case 'contains':
case 'regexp':
case 'like':
$operator = $this->getOperator($func);
if (empty($relation)) {
throw new Doctrine_Query_Exception('DQL functions contains/regexp/like can only be used for fields of related components');
}
$where = array();
foreach ($values as $value) {
$where[] = $conn->quoteIdentifier($alias . '.' . $relation->getLocal()) . ' IN (SELECT ' . $conn->quoteIdentifier($relation->getForeign()) . ' FROM ' . $conn->quoteIdentifier($relation->getTable()->getTableName()) . ' WHERE ' . $field . $operator . $value . ')';
}
$where = implode(' AND ', $where);
break;
default:
throw new Doctrine_Query_Exception('Unknown DQL function: ' . $func);
}
} else {
$map = $this->query->load($reference, false);
$alias = $this->query->getTableAlias($reference);
$table = $map['table'];
$field = $table->getColumnName($field);
// check if value is enumerated value
$enumIndex = $table->enumIndex($field, trim($value, "'"));
if (substr($value, 0, 1) == '(') {
// trim brackets
$trimmed = Doctrine_Tokenizer::bracketTrim($value);
if (substr($trimmed, 0, 4) == 'FROM' || substr($trimmed, 0, 6) == 'SELECT') {
// subquery found
$q = new Doctrine_Query();
$value = '(' . $q->isSubquery(true)->parseQuery($trimmed)->getQuery() . ')';
} elseif (substr($trimmed, 0, 4) == 'SQL:') {
$value = '(' . substr($trimmed, 4) . ')';
} else {
// simple in expression found
$e = Doctrine_Tokenizer::sqlExplode($trimmed, ',');
$value = array();
foreach ($e as $part) {
$index = $table->enumIndex($field, trim($part, "'"));
if ($index !== false) {
$value[] = $index;
} else {
$value[] = $this->parseLiteralValue($part);
}
}
$value = '(' . implode(', ', $value) . ')';
}
} elseif (substr($value, 0, 1) == ':' || $value === '?') {
// placeholder found
if ($table->getTypeOf($field) == 'enum') {
$this->query->addEnumParam($value, $table, $field);
} else {
$this->query->addEnumParam($value, null, null);
}
} else {
if ($enumIndex !== false) {
$value = $enumIndex;
} else {
$value = $this->parseLiteralValue($value);
}
}
switch ($operator) {
case '<':
case '>':
case '=':
case '!=':
if ($enumIndex !== false) {
$value = $enumIndex;
}
default:
if ($this->query->getType() === Doctrine_Query::SELECT) {
$fieldname = $alias ? $conn->quoteIdentifier($alias . '.' . $field) : $field;
} else {
$fieldname = $field;
}
$where = $fieldname . ' ' . $operator . ' ' . $value;
}
}
}
return $where;
}
