X-Git-Url: http://git.inspyration.org/?a=blobdiff_plain;f=vendor%2Fdoctrine%2Fdbal%2Flib%2FDoctrine%2FDBAL%2FQuery%2FQueryBuilder.php;fp=vendor%2Fdoctrine%2Fdbal%2Flib%2FDoctrine%2FDBAL%2FQuery%2FQueryBuilder.php;h=e0c5af14deeed169a8437884b1a68a366a10bf7c;hb=8b04b2d11798dee4f3e1358e4f43e97a6df851f6;hp=0000000000000000000000000000000000000000;hpb=73568cf05a785a45f94ca3f2351d9e07bf917958;p=zf2.biz%2Fapplication_blanche.git diff --git a/vendor/doctrine/dbal/lib/Doctrine/DBAL/Query/QueryBuilder.php b/vendor/doctrine/dbal/lib/Doctrine/DBAL/Query/QueryBuilder.php new file mode 100644 index 0000000..e0c5af1 --- /dev/null +++ b/vendor/doctrine/dbal/lib/Doctrine/DBAL/Query/QueryBuilder.php @@ -0,0 +1,1087 @@ +. + */ + +namespace Doctrine\DBAL\Query; + +use Doctrine\DBAL\Query\Expression\CompositeExpression, + Doctrine\DBAL\Connection; + +/** + * QueryBuilder class is responsible to dynamically create SQL queries. + * + * Important: Verify that every feature you use will work with your database vendor. + * SQL Query Builder does not attempt to validate the generated SQL at all. + * + * The query builder does no validation whatsoever if certain features even work with the + * underlying database vendor. Limit queries and joins are NOT applied to UPDATE and DELETE statements + * even if some vendors such as MySQL support it. + * + * @license http://www.opensource.org/licenses/lgpl-license.php LGPL + * @link www.doctrine-project.com + * @since 2.1 + * @author Guilherme Blanco + * @author Benjamin Eberlei + */ +class QueryBuilder +{ + /* The query types. */ + const SELECT = 0; + const DELETE = 1; + const UPDATE = 2; + + /** The builder states. */ + const STATE_DIRTY = 0; + const STATE_CLEAN = 1; + + /** + * @var Doctrine\DBAL\Connection DBAL Connection + */ + private $connection = null; + + /** + * @var array The array of SQL parts collected. + */ + private $sqlParts = array( + 'select' => array(), + 'from' => array(), + 'join' => array(), + 'set' => array(), + 'where' => null, + 'groupBy' => array(), + 'having' => null, + 'orderBy' => array() + ); + + /** + * @var string The complete SQL string for this query. + */ + private $sql; + + /** + * @var array The query parameters. + */ + private $params = array(); + + /** + * @var array The parameter type map of this query. + */ + private $paramTypes = array(); + + /** + * @var integer The type of query this is. Can be select, update or delete. + */ + private $type = self::SELECT; + + /** + * @var integer The state of the query object. Can be dirty or clean. + */ + private $state = self::STATE_CLEAN; + + /** + * @var integer The index of the first result to retrieve. + */ + private $firstResult = null; + + /** + * @var integer The maximum number of results to retrieve. + */ + private $maxResults = null; + + /** + * The counter of bound parameters used with {@see bindValue) + * + * @var int + */ + private $boundCounter = 0; + + /** + * Initializes a new QueryBuilder. + * + * @param \Doctrine\DBAL\Connection $connection DBAL Connection + */ + public function __construct(Connection $connection) + { + $this->connection = $connection; + } + + /** + * Gets an ExpressionBuilder used for object-oriented construction of query expressions. + * This producer method is intended for convenient inline usage. Example: + * + * + * $qb = $conn->createQueryBuilder() + * ->select('u') + * ->from('users', 'u') + * ->where($qb->expr()->eq('u.id', 1)); + * + * + * For more complex expression construction, consider storing the expression + * builder object in a local variable. + * + * @return \Doctrine\DBAL\Query\Expression\ExpressionBuilder + */ + public function expr() + { + return $this->connection->getExpressionBuilder(); + } + + /** + * Get the type of the currently built query. + * + * @return integer + */ + public function getType() + { + return $this->type; + } + + /** + * Get the associated DBAL Connection for this query builder. + * + * @return \Doctrine\DBAL\Connection + */ + public function getConnection() + { + return $this->connection; + } + + /** + * Get the state of this query builder instance. + * + * @return integer Either QueryBuilder::STATE_DIRTY or QueryBuilder::STATE_CLEAN. + */ + public function getState() + { + return $this->state; + } + + /** + * Execute this query using the bound parameters and their types. + * + * Uses {@see Connection::executeQuery} for select statements and {@see Connection::executeUpdate} + * for insert, update and delete statements. + * + * @return mixed + */ + public function execute() + { + if ($this->type == self::SELECT) { + return $this->connection->executeQuery($this->getSQL(), $this->params, $this->paramTypes); + } else { + return $this->connection->executeUpdate($this->getSQL(), $this->params, $this->paramTypes); + } + } + + /** + * Get the complete SQL string formed by the current specifications of this QueryBuilder. + * + * + * $qb = $em->createQueryBuilder() + * ->select('u') + * ->from('User', 'u') + * echo $qb->getSQL(); // SELECT u FROM User u + * + * + * @return string The sql query string. + */ + public function getSQL() + { + if ($this->sql !== null && $this->state === self::STATE_CLEAN) { + return $this->sql; + } + + $sql = ''; + + switch ($this->type) { + case self::DELETE: + $sql = $this->getSQLForDelete(); + break; + + case self::UPDATE: + $sql = $this->getSQLForUpdate(); + break; + + case self::SELECT: + default: + $sql = $this->getSQLForSelect(); + break; + } + + $this->state = self::STATE_CLEAN; + $this->sql = $sql; + + return $sql; + } + + /** + * Sets a query parameter for the query being constructed. + * + * + * $qb = $conn->createQueryBuilder() + * ->select('u') + * ->from('users', 'u') + * ->where('u.id = :user_id') + * ->setParameter(':user_id', 1); + * + * + * @param string|integer $key The parameter position or name. + * @param mixed $value The parameter value. + * @param string|null $type PDO::PARAM_* + * @return QueryBuilder This QueryBuilder instance. + */ + public function setParameter($key, $value, $type = null) + { + if ($type !== null) { + $this->paramTypes[$key] = $type; + } + + $this->params[$key] = $value; + + return $this; + } + + /** + * Sets a collection of query parameters for the query being constructed. + * + * + * $qb = $conn->createQueryBuilder() + * ->select('u') + * ->from('users', 'u') + * ->where('u.id = :user_id1 OR u.id = :user_id2') + * ->setParameters(array( + * ':user_id1' => 1, + * ':user_id2' => 2 + * )); + * + * + * @param array $params The query parameters to set. + * @param array $types The query parameters types to set. + * @return QueryBuilder This QueryBuilder instance. + */ + public function setParameters(array $params, array $types = array()) + { + $this->paramTypes = $types; + $this->params = $params; + + return $this; + } + + /** + * Gets all defined query parameters for the query being constructed. + * + * @return array The currently defined query parameters. + */ + public function getParameters() + { + return $this->params; + } + + /** + * Gets a (previously set) query parameter of the query being constructed. + * + * @param mixed $key The key (index or name) of the bound parameter. + * @return mixed The value of the bound parameter. + */ + public function getParameter($key) + { + return isset($this->params[$key]) ? $this->params[$key] : null; + } + + /** + * Sets the position of the first result to retrieve (the "offset"). + * + * @param integer $firstResult The first result to return. + * @return \Doctrine\DBAL\Query\QueryBuilder This QueryBuilder instance. + */ + public function setFirstResult($firstResult) + { + $this->state = self::STATE_DIRTY; + $this->firstResult = $firstResult; + return $this; + } + + /** + * Gets the position of the first result the query object was set to retrieve (the "offset"). + * Returns NULL if {@link setFirstResult} was not applied to this QueryBuilder. + * + * @return integer The position of the first result. + */ + public function getFirstResult() + { + return $this->firstResult; + } + + /** + * Sets the maximum number of results to retrieve (the "limit"). + * + * @param integer $maxResults The maximum number of results to retrieve. + * @return \Doctrine\DBAL\Query\QueryBuilder This QueryBuilder instance. + */ + public function setMaxResults($maxResults) + { + $this->state = self::STATE_DIRTY; + $this->maxResults = $maxResults; + return $this; + } + + /** + * Gets the maximum number of results the query object was set to retrieve (the "limit"). + * Returns NULL if {@link setMaxResults} was not applied to this query builder. + * + * @return integer Maximum number of results. + */ + public function getMaxResults() + { + return $this->maxResults; + } + + /** + * Either appends to or replaces a single, generic query part. + * + * The available parts are: 'select', 'from', 'set', 'where', + * 'groupBy', 'having' and 'orderBy'. + * + * @param string $sqlPartName + * @param string $sqlPart + * @param boolean $append + * @return \Doctrine\DBAL\Query\QueryBuilder This QueryBuilder instance. + */ + public function add($sqlPartName, $sqlPart, $append = false) + { + $isArray = is_array($sqlPart); + $isMultiple = is_array($this->sqlParts[$sqlPartName]); + + if ($isMultiple && !$isArray) { + $sqlPart = array($sqlPart); + } + + $this->state = self::STATE_DIRTY; + + if ($append) { + if ($sqlPartName == "orderBy" || $sqlPartName == "groupBy" || $sqlPartName == "select" || $sqlPartName == "set") { + foreach ($sqlPart as $part) { + $this->sqlParts[$sqlPartName][] = $part; + } + } else if ($isArray && is_array($sqlPart[key($sqlPart)])) { + $key = key($sqlPart); + $this->sqlParts[$sqlPartName][$key][] = $sqlPart[$key]; + } else if ($isMultiple) { + $this->sqlParts[$sqlPartName][] = $sqlPart; + } else { + $this->sqlParts[$sqlPartName] = $sqlPart; + } + + return $this; + } + + $this->sqlParts[$sqlPartName] = $sqlPart; + + return $this; + } + + /** + * Specifies an item that is to be returned in the query result. + * Replaces any previously specified selections, if any. + * + * + * $qb = $conn->createQueryBuilder() + * ->select('u.id', 'p.id') + * ->from('users', 'u') + * ->leftJoin('u', 'phonenumbers', 'p', 'u.id = p.user_id'); + * + * + * @param mixed $select The selection expressions. + * @return QueryBuilder This QueryBuilder instance. + */ + public function select($select = null) + { + $this->type = self::SELECT; + + if (empty($select)) { + return $this; + } + + $selects = is_array($select) ? $select : func_get_args(); + + return $this->add('select', $selects, false); + } + + /** + * Adds an item that is to be returned in the query result. + * + * + * $qb = $conn->createQueryBuilder() + * ->select('u.id') + * ->addSelect('p.id') + * ->from('users', 'u') + * ->leftJoin('u', 'phonenumbers', 'u.id = p.user_id'); + * + * + * @param mixed $select The selection expression. + * @return QueryBuilder This QueryBuilder instance. + */ + public function addSelect($select = null) + { + $this->type = self::SELECT; + + if (empty($select)) { + return $this; + } + + $selects = is_array($select) ? $select : func_get_args(); + + return $this->add('select', $selects, true); + } + + /** + * Turns the query being built into a bulk delete query that ranges over + * a certain table. + * + * + * $qb = $conn->createQueryBuilder() + * ->delete('users', 'u') + * ->where('u.id = :user_id'); + * ->setParameter(':user_id', 1); + * + * + * @param string $delete The table whose rows are subject to the deletion. + * @param string $alias The table alias used in the constructed query. + * @return QueryBuilder This QueryBuilder instance. + */ + public function delete($delete = null, $alias = null) + { + $this->type = self::DELETE; + + if ( ! $delete) { + return $this; + } + + return $this->add('from', array( + 'table' => $delete, + 'alias' => $alias + )); + } + + /** + * Turns the query being built into a bulk update query that ranges over + * a certain table + * + * + * $qb = $conn->createQueryBuilder() + * ->update('users', 'u') + * ->set('u.password', md5('password')) + * ->where('u.id = ?'); + * + * + * @param string $update The table whose rows are subject to the update. + * @param string $alias The table alias used in the constructed query. + * @return QueryBuilder This QueryBuilder instance. + */ + public function update($update = null, $alias = null) + { + $this->type = self::UPDATE; + + if ( ! $update) { + return $this; + } + + return $this->add('from', array( + 'table' => $update, + 'alias' => $alias + )); + } + + /** + * Create and add a query root corresponding to the table identified by the + * given alias, forming a cartesian product with any existing query roots. + * + * + * $qb = $conn->createQueryBuilder() + * ->select('u.id') + * ->from('users', 'u') + * + * + * @param string $from The table + * @param string $alias The alias of the table + * @return QueryBuilder This QueryBuilder instance. + */ + public function from($from, $alias) + { + return $this->add('from', array( + 'table' => $from, + 'alias' => $alias + ), true); + } + + /** + * Creates and adds a join to the query. + * + * + * $qb = $conn->createQueryBuilder() + * ->select('u.name') + * ->from('users', 'u') + * ->join('u', 'phonenumbers', 'p', 'p.is_primary = 1'); + * + * + * @param string $fromAlias The alias that points to a from clause + * @param string $join The table name to join + * @param string $alias The alias of the join table + * @param string $condition The condition for the join + * @return QueryBuilder This QueryBuilder instance. + */ + public function join($fromAlias, $join, $alias, $condition = null) + { + return $this->innerJoin($fromAlias, $join, $alias, $condition); + } + + /** + * Creates and adds a join to the query. + * + * + * $qb = $conn->createQueryBuilder() + * ->select('u.name') + * ->from('users', 'u') + * ->innerJoin('u', 'phonenumbers', 'p', 'p.is_primary = 1'); + * + * + * @param string $fromAlias The alias that points to a from clause + * @param string $join The table name to join + * @param string $alias The alias of the join table + * @param string $condition The condition for the join + * @return QueryBuilder This QueryBuilder instance. + */ + public function innerJoin($fromAlias, $join, $alias, $condition = null) + { + return $this->add('join', array( + $fromAlias => array( + 'joinType' => 'inner', + 'joinTable' => $join, + 'joinAlias' => $alias, + 'joinCondition' => $condition + ) + ), true); + } + + /** + * Creates and adds a left join to the query. + * + * + * $qb = $conn->createQueryBuilder() + * ->select('u.name') + * ->from('users', 'u') + * ->leftJoin('u', 'phonenumbers', 'p', 'p.is_primary = 1'); + * + * + * @param string $fromAlias The alias that points to a from clause + * @param string $join The table name to join + * @param string $alias The alias of the join table + * @param string $condition The condition for the join + * @return QueryBuilder This QueryBuilder instance. + */ + public function leftJoin($fromAlias, $join, $alias, $condition = null) + { + return $this->add('join', array( + $fromAlias => array( + 'joinType' => 'left', + 'joinTable' => $join, + 'joinAlias' => $alias, + 'joinCondition' => $condition + ) + ), true); + } + + /** + * Creates and adds a right join to the query. + * + * + * $qb = $conn->createQueryBuilder() + * ->select('u.name') + * ->from('users', 'u') + * ->rightJoin('u', 'phonenumbers', 'p', 'p.is_primary = 1'); + * + * + * @param string $fromAlias The alias that points to a from clause + * @param string $join The table name to join + * @param string $alias The alias of the join table + * @param string $condition The condition for the join + * @return QueryBuilder This QueryBuilder instance. + */ + public function rightJoin($fromAlias, $join, $alias, $condition = null) + { + return $this->add('join', array( + $fromAlias => array( + 'joinType' => 'right', + 'joinTable' => $join, + 'joinAlias' => $alias, + 'joinCondition' => $condition + ) + ), true); + } + + /** + * Sets a new value for a column in a bulk update query. + * + * + * $qb = $conn->createQueryBuilder() + * ->update('users', 'u') + * ->set('u.password', md5('password')) + * ->where('u.id = ?'); + * + * + * @param string $key The column to set. + * @param string $value The value, expression, placeholder, etc. + * @return QueryBuilder This QueryBuilder instance. + */ + public function set($key, $value) + { + return $this->add('set', $key .' = ' . $value, true); + } + + /** + * Specifies one or more restrictions to the query result. + * Replaces any previously specified restrictions, if any. + * + * + * $qb = $conn->createQueryBuilder() + * ->select('u.name') + * ->from('users', 'u') + * ->where('u.id = ?'); + * + * // You can optionally programatically build and/or expressions + * $qb = $conn->createQueryBuilder(); + * + * $or = $qb->expr()->orx(); + * $or->add($qb->expr()->eq('u.id', 1)); + * $or->add($qb->expr()->eq('u.id', 2)); + * + * $qb->update('users', 'u') + * ->set('u.password', md5('password')) + * ->where($or); + * + * + * @param mixed $predicates The restriction predicates. + * @return QueryBuilder This QueryBuilder instance. + */ + public function where($predicates) + { + if ( ! (func_num_args() == 1 && $predicates instanceof CompositeExpression) ) { + $predicates = new CompositeExpression(CompositeExpression::TYPE_AND, func_get_args()); + } + + return $this->add('where', $predicates); + } + + /** + * Adds one or more restrictions to the query results, forming a logical + * conjunction with any previously specified restrictions. + * + * + * $qb = $conn->createQueryBuilder() + * ->select('u') + * ->from('users', 'u') + * ->where('u.username LIKE ?') + * ->andWhere('u.is_active = 1'); + * + * + * @param mixed $where The query restrictions. + * @return QueryBuilder This QueryBuilder instance. + * @see where() + */ + public function andWhere($where) + { + $where = $this->getQueryPart('where'); + $args = func_get_args(); + + if ($where instanceof CompositeExpression && $where->getType() === CompositeExpression::TYPE_AND) { + $where->addMultiple($args); + } else { + array_unshift($args, $where); + $where = new CompositeExpression(CompositeExpression::TYPE_AND, $args); + } + + return $this->add('where', $where, true); + } + + /** + * Adds one or more restrictions to the query results, forming a logical + * disjunction with any previously specified restrictions. + * + * + * $qb = $em->createQueryBuilder() + * ->select('u.name') + * ->from('users', 'u') + * ->where('u.id = 1') + * ->orWhere('u.id = 2'); + * + * + * @param mixed $where The WHERE statement + * @return QueryBuilder $qb + * @see where() + */ + public function orWhere($where) + { + $where = $this->getQueryPart('where'); + $args = func_get_args(); + + if ($where instanceof CompositeExpression && $where->getType() === CompositeExpression::TYPE_OR) { + $where->addMultiple($args); + } else { + array_unshift($args, $where); + $where = new CompositeExpression(CompositeExpression::TYPE_OR, $args); + } + + return $this->add('where', $where, true); + } + + /** + * Specifies a grouping over the results of the query. + * Replaces any previously specified groupings, if any. + * + * + * $qb = $conn->createQueryBuilder() + * ->select('u.name') + * ->from('users', 'u') + * ->groupBy('u.id'); + * + * + * @param mixed $groupBy The grouping expression. + * @return QueryBuilder This QueryBuilder instance. + */ + public function groupBy($groupBy) + { + if (empty($groupBy)) { + return $this; + } + + $groupBy = is_array($groupBy) ? $groupBy : func_get_args(); + + return $this->add('groupBy', $groupBy, false); + } + + + /** + * Adds a grouping expression to the query. + * + * + * $qb = $conn->createQueryBuilder() + * ->select('u.name') + * ->from('users', 'u') + * ->groupBy('u.lastLogin'); + * ->addGroupBy('u.createdAt') + * + * + * @param mixed $groupBy The grouping expression. + * @return QueryBuilder This QueryBuilder instance. + */ + public function addGroupBy($groupBy) + { + if (empty($groupBy)) { + return $this; + } + + $groupBy = is_array($groupBy) ? $groupBy : func_get_args(); + + return $this->add('groupBy', $groupBy, true); + } + + /** + * Specifies a restriction over the groups of the query. + * Replaces any previous having restrictions, if any. + * + * @param mixed $having The restriction over the groups. + * @return QueryBuilder This QueryBuilder instance. + */ + public function having($having) + { + if ( ! (func_num_args() == 1 && $having instanceof CompositeExpression)) { + $having = new CompositeExpression(CompositeExpression::TYPE_AND, func_get_args()); + } + + return $this->add('having', $having); + } + + /** + * Adds a restriction over the groups of the query, forming a logical + * conjunction with any existing having restrictions. + * + * @param mixed $having The restriction to append. + * @return QueryBuilder This QueryBuilder instance. + */ + public function andHaving($having) + { + $having = $this->getQueryPart('having'); + $args = func_get_args(); + + if ($having instanceof CompositeExpression && $having->getType() === CompositeExpression::TYPE_AND) { + $having->addMultiple($args); + } else { + array_unshift($args, $having); + $having = new CompositeExpression(CompositeExpression::TYPE_AND, $args); + } + + return $this->add('having', $having); + } + + /** + * Adds a restriction over the groups of the query, forming a logical + * disjunction with any existing having restrictions. + * + * @param mixed $having The restriction to add. + * @return QueryBuilder This QueryBuilder instance. + */ + public function orHaving($having) + { + $having = $this->getQueryPart('having'); + $args = func_get_args(); + + if ($having instanceof CompositeExpression && $having->getType() === CompositeExpression::TYPE_OR) { + $having->addMultiple($args); + } else { + array_unshift($args, $having); + $having = new CompositeExpression(CompositeExpression::TYPE_OR, $args); + } + + return $this->add('having', $having); + } + + /** + * Specifies an ordering for the query results. + * Replaces any previously specified orderings, if any. + * + * @param string $sort The ordering expression. + * @param string $order The ordering direction. + * @return QueryBuilder This QueryBuilder instance. + */ + public function orderBy($sort, $order = null) + { + return $this->add('orderBy', $sort . ' ' . (! $order ? 'ASC' : $order), false); + } + + /** + * Adds an ordering to the query results. + * + * @param string $sort The ordering expression. + * @param string $order The ordering direction. + * @return QueryBuilder This QueryBuilder instance. + */ + public function addOrderBy($sort, $order = null) + { + return $this->add('orderBy', $sort . ' ' . (! $order ? 'ASC' : $order), true); + } + + /** + * Get a query part by its name. + * + * @param string $queryPartName + * @return mixed $queryPart + */ + public function getQueryPart($queryPartName) + { + return $this->sqlParts[$queryPartName]; + } + + /** + * Get all query parts. + * + * @return array $sqlParts + */ + public function getQueryParts() + { + return $this->sqlParts; + } + + /** + * Reset SQL parts + * + * @param array $queryPartNames + * @return QueryBuilder + */ + public function resetQueryParts($queryPartNames = null) + { + if (is_null($queryPartNames)) { + $queryPartNames = array_keys($this->sqlParts); + } + + foreach ($queryPartNames as $queryPartName) { + $this->resetQueryPart($queryPartName); + } + + return $this; + } + + /** + * Reset single SQL part + * + * @param string $queryPartName + * @return QueryBuilder + */ + public function resetQueryPart($queryPartName) + { + $this->sqlParts[$queryPartName] = is_array($this->sqlParts[$queryPartName]) + ? array() : null; + + $this->state = self::STATE_DIRTY; + + return $this; + } + + private function getSQLForSelect() + { + $query = 'SELECT ' . implode(', ', $this->sqlParts['select']) . ' FROM '; + + $fromClauses = array(); + + // Loop through all FROM clauses + foreach ($this->sqlParts['from'] as $from) { + $fromClause = $from['table'] . ' ' . $from['alias']; + + if (isset($this->sqlParts['join'][$from['alias']])) { + foreach ($this->sqlParts['join'][$from['alias']] as $join) { + $fromClause .= ' ' . strtoupper($join['joinType']) + . ' JOIN ' . $join['joinTable'] . ' ' . $join['joinAlias'] + . ' ON ' . ((string) $join['joinCondition']); + } + } + + $fromClauses[$from['alias']] = $fromClause; + } + + // loop through all JOIN clasues for validation purpose + foreach ($this->sqlParts['join'] as $fromAlias => $joins) { + if ( ! isset($fromClauses[$fromAlias]) ) { + throw QueryException::unknownFromAlias($fromAlias, array_keys($fromClauses)); + } + } + + $query .= implode(', ', $fromClauses) + . ($this->sqlParts['where'] !== null ? ' WHERE ' . ((string) $this->sqlParts['where']) : '') + . ($this->sqlParts['groupBy'] ? ' GROUP BY ' . implode(', ', $this->sqlParts['groupBy']) : '') + . ($this->sqlParts['having'] !== null ? ' HAVING ' . ((string) $this->sqlParts['having']) : '') + . ($this->sqlParts['orderBy'] ? ' ORDER BY ' . implode(', ', $this->sqlParts['orderBy']) : ''); + + return ($this->maxResults === null && $this->firstResult == null) + ? $query + : $this->connection->getDatabasePlatform()->modifyLimitQuery($query, $this->maxResults, $this->firstResult); + } + + /** + * Converts this instance into an UPDATE string in SQL. + * + * @return string + */ + private function getSQLForUpdate() + { + $table = $this->sqlParts['from']['table'] . ($this->sqlParts['from']['alias'] ? ' ' . $this->sqlParts['from']['alias'] : ''); + $query = 'UPDATE ' . $table + . ' SET ' . implode(", ", $this->sqlParts['set']) + . ($this->sqlParts['where'] !== null ? ' WHERE ' . ((string) $this->sqlParts['where']) : ''); + + return $query; + } + + /** + * Converts this instance into a DELETE string in SQL. + * + * @return string + */ + private function getSQLForDelete() + { + $table = $this->sqlParts['from']['table'] . ($this->sqlParts['from']['alias'] ? ' ' . $this->sqlParts['from']['alias'] : ''); + $query = 'DELETE FROM ' . $table . ($this->sqlParts['where'] !== null ? ' WHERE ' . ((string) $this->sqlParts['where']) : ''); + + return $query; + } + + /** + * Gets a string representation of this QueryBuilder which corresponds to + * the final SQL query being constructed. + * + * @return string The string representation of this QueryBuilder. + */ + public function __toString() + { + return $this->getSQL(); + } + + /** + * Create a new named parameter and bind the value $value to it. + * + * This method provides a shortcut for PDOStatement::bindValue + * when using prepared statements. + * + * The parameter $value specifies the value that you want to bind. If + * $placeholder is not provided bindValue() will automatically create a + * placeholder for you. An automatic placeholder will be of the name + * ':dcValue1', ':dcValue2' etc. + * + * For more information see {@link http://php.net/pdostatement-bindparam} + * + * Example: + * + * $value = 2; + * $q->eq( 'id', $q->bindValue( $value ) ); + * $stmt = $q->executeQuery(); // executed with 'id = 2' + * + * + * @license New BSD License + * @link http://www.zetacomponents.org + * @param mixed $value + * @param mixed $type + * @param string $placeHolder the name to bind with. The string must start with a colon ':'. + * @return string the placeholder name used. + */ + public function createNamedParameter( $value, $type = \PDO::PARAM_STR, $placeHolder = null ) + { + if ( $placeHolder === null ) { + $this->boundCounter++; + $placeHolder = ":dcValue" . $this->boundCounter; + } + $this->setParameter(substr($placeHolder, 1), $value, $type); + + return $placeHolder; + } + + /** + * Create a new positional parameter and bind the given value to it. + * + * Attention: If you are using positional parameters with the query builder you have + * to be very careful to bind all parameters in the order they appear in the SQL + * statement , otherwise they get bound in the wrong order which can lead to serious + * bugs in your code. + * + * Example: + * + * $qb = $conn->createQueryBuilder(); + * $qb->select('u.*') + * ->from('users', 'u') + * ->where('u.username = ' . $qb->createPositionalParameter('Foo', PDO::PARAM_STR)) + * ->orWhere('u.username = ' . $qb->createPositionalParameter('Bar', PDO::PARAM_STR)) + * + * + * @param mixed $value + * @param mixed $type + * @return string + */ + public function createPositionalParameter($value, $type = \PDO::PARAM_STR) + { + $this->boundCounter++; + $this->setParameter($this->boundCounter, $value, $type); + return "?"; + } +}