/**
* Remove parts of a SQL string that contain quoted strings
* of values or identifiers.
*
* @param string $sql
* @return string
*/
protected function _stripQuoted($sql)
{
// get the character for value quoting
// this should be '
$q = $this->_adapter->quote('a');
$q = $q[0];
// get the value used as an escaped quote,
// e.g. \' or ''
$qe = $this->_adapter->quote($q);
$qe = substr($qe, 1, 2);
$qe = preg_quote($qe);
$escapeChar = substr($qe, 0, 1);
// remove 'foo\'bar'
if (!empty($q)) {
$escapeChar = preg_quote($escapeChar);
// this segfaults only after 65,000 characters instead of 9,000
$sql = preg_replace("/{$q}([^{$q}{$escapeChar}]*|({$qe})*)*{$q}/s", '', $sql);
}
// get a version of the SQL statement with all quoted
// values and delimited identifiers stripped out
// remove "foo\"bar"
$sql = preg_replace("/\"(\\\\\"|[^\"])*\"/Us", '', $sql);
// get the character for delimited id quotes,
// this is usually " but in MySQL is `
$d = $this->_adapter->quoteIdentifier('a');
$d = $d[0];
// get the value used as an escaped delimited id quote,
// e.g. \" or "" or \`
$de = $this->_adapter->quoteIdentifier($d);
$de = substr($de, 1, 2);
$de = preg_quote($de);
// Note: $de and $d where never used..., now they are:
$sql = preg_replace("/{$d}({$de}|\\\\{2}|[^{$d}])*{$d}/Us", '', $sql);
return $sql;
}
/**
* Fetches rows by primary key. The argument specifies one or more primary
* key value(s). To find multiple rows by primary key, the argument must
* be an array.
*
* This method accepts a variable number of arguments. If the table has a
* multi-column primary key, the number of arguments must be the same as
* the number of columns in the primary key. To find multiple rows in a
* table with a multi-column primary key, each argument must be an array
* with the same number of elements.
*
* The find() method always returns a Rowset object, even if only one row
* was found.
*
* @param mixed $key The value(s) of the primary keys.
* @return \Micro\Database\Table\Rowset\RowsetAbstract Row(s) matching the criteria.
* @throws \Micro\Database\Table\Exception
*/
public function find()
{
$this->_setupPrimaryKey();
$args = func_get_args();
$keyNames = array_values((array) $this->_primary);
if (count($args) < count($keyNames)) {
throw new Exception("Too few columns for the primary key");
}
if (count($args) > count($keyNames)) {
throw new Exception("Too many columns for the primary key");
}
$whereList = array();
$numberTerms = 0;
foreach ($args as $keyPosition => $keyValues) {
$keyValuesCount = count($keyValues);
// Coerce the values to an array.
// Don't simply typecast to array, because the values
// might be \Micro\Database\Expr objects.
if (!is_array($keyValues)) {
$keyValues = array($keyValues);
}
if ($numberTerms == 0) {
$numberTerms = $keyValuesCount;
} else {
if ($keyValuesCount != $numberTerms) {
throw new Exception("Missing value(s) for the primary key");
}
}
$keyValues = array_values($keyValues);
for ($i = 0; $i < $keyValuesCount; ++$i) {
if (!isset($whereList[$i])) {
$whereList[$i] = array();
}
$whereList[$i][$keyPosition] = $keyValues[$i];
}
}
$whereClause = null;
if (count($whereList)) {
$whereOrTerms = array();
$tableName = $this->_db->quoteTableAs($this->_name, null, true);
foreach ($whereList as $keyValueSets) {
$whereAndTerms = array();
foreach ($keyValueSets as $keyPosition => $keyValue) {
$type = $this->_metadata[$keyNames[$keyPosition]]['DATA_TYPE'];
$columnName = $this->_db->quoteIdentifier($keyNames[$keyPosition], true);
$whereAndTerms[] = $this->_db->quoteInto($tableName . '.' . $columnName . ' = ?', $keyValue, $type);
}
$whereOrTerms[] = '(' . implode(' AND ', $whereAndTerms) . ')';
}
$whereClause = '(' . implode(' OR ', $whereOrTerms) . ')';
}
if ($whereClause == null) {
$rowsetClass = $this->getRowsetClass();
if (!class_exists($rowsetClass)) {
throw new Exception("Class '{$rowsetClass}' does not exists");
}
return new $rowsetClass(array('table' => $this, 'rowClass' => $this->getRowClass(), 'stored' => true));
}
return $this->fetchAll($whereClause);
}
/**
* Render ORDER clause
*
* @param string $sql SQL query
* @return string
*/
protected function _renderOrder($sql)
{
if ($this->_parts[self::ORDER]) {
$order = array();
foreach ($this->_parts[self::ORDER] as $term) {
if (is_array($term)) {
if (is_numeric($term[0]) && strval(intval($term[0])) == $term[0]) {
$order[] = (int) trim($term[0]) . ' ' . $term[1];
} else {
$order[] = $this->_adapter->quoteIdentifier($term[0], true) . ' ' . $term[1];
}
} else {
if (is_numeric($term) && strval(intval($term)) == $term) {
$order[] = (int) trim($term);
} else {
$order[] = $this->_adapter->quoteIdentifier($term, true);
}
}
}
$sql .= ' ' . self::SQL_ORDER_BY . ' ' . implode(', ', $order);
}
return $sql;
}
