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| QueryBuilder.php | |||||
| QueryException.php |
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<?php
/*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the MIT license. For more information, see
* <http://www.doctrine-project.org>.
*/
namespace Doctrine\DBAL\Query;
use Doctrine\DBAL\Query\Expression\CompositeExpression;
use 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.
*
* @link www.doctrine-project.org
* @since 2.1
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
* @author Benjamin Eberlei <kontakt@beberlei.de>
*/
class QueryBuilder
{
/*
* The query types.
*/
const SELECT = 0;
const DELETE = 1;
const UPDATE = 2;
const INSERT = 3;
/*
* The builder states.
*/
const STATE_DIRTY = 0;
const STATE_CLEAN = 1;
/**
* The DBAL Connection.
*
* @var \Doctrine\DBAL\Connection
*/
private $connection;
/**
* @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(),
'values' => array(),
);
/**
* The complete SQL string for this query.
*
* @var string
*/
private $sql;
/**
* The query parameters.
*
* @var array
*/
private $params = array();
/**
* The parameter type map of this query.
*
* @var array
*/
private $paramTypes = array();
/**
* The type of query this is. Can be select, update or delete.
*
* @var integer
*/
private $type = self::SELECT;
/**
* The state of the query object. Can be dirty or clean.
*
* @var integer
*/
private $state = self::STATE_CLEAN;
/**
* The index of the first result to retrieve.
*
* @var integer
*/
private $firstResult = null;
/**
* The maximum number of results to retrieve.
*
* @var integer
*/
private $maxResults = null;
/**
* The counter of bound parameters used with {@see bindValue).
*
* @var integer
*/
private $boundCounter = 0;
/**
* Initializes a new <tt>QueryBuilder</tt>.
*
* @param \Doctrine\DBAL\Connection $connection The 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:
*
* <code>
* $qb = $conn->createQueryBuilder()
* ->select('u')
* ->from('users', 'u')
* ->where($qb->expr()->eq('u.id', 1));
* </code>
*
* 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();
}
/**
* Gets the type of the currently built query.
*
* @return integer
*/
public function getType()
{
return $this->type;
}
/**
* Gets the associated DBAL Connection for this query builder.
*
* @return \Doctrine\DBAL\Connection
*/
public function getConnection()
{
return $this->connection;
}
/**
* Gets the state of this query builder instance.
*
* @return integer Either QueryBuilder::STATE_DIRTY or QueryBuilder::STATE_CLEAN.
*/
public function getState()
{
return $this->state;
}
/**
* Executes this query using the bound parameters and their types.
*
* Uses {@see Connection::executeQuery} for select statements and {@see Connection::executeUpdate}
* for insert, update and delete statements.
*
* @return \Doctrine\DBAL\Driver\Statement|int
*/
public function execute()
{
if ($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);
}
}
/**
* Gets the complete SQL string formed by the current specifications of this QueryBuilder.
*
* <code>
* $qb = $em->createQueryBuilder()
* ->select('u')
* ->from('User', 'u')
* echo $qb->getSQL(); // SELECT u FROM User u
* </code>
*
* @return string The SQL query string.
*/
public function getSQL()
{
if ($this->sql !== null && $this->state === self::STATE_CLEAN) {
return $this->sql;
}
switch ($this->type) {
case self::INSERT:
$sql = $this->getSQLForInsert();
break;
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.
*
* <code>
* $qb = $conn->createQueryBuilder()
* ->select('u')
* ->from('users', 'u')
* ->where('u.id = :user_id')
* ->setParameter(':user_id', 1);
* </code>
*
* @param string|integer $key The parameter position or name.
* @param mixed $value The parameter value.
* @param string|null $type One of the PDO::PARAM_* constants.
*
* @return $this This QueryBuilder instance.
*/
public function setParameter($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.
*
* <code>
* $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
* ));
* </code>
*
* @param array $params The query parameters to set.
* @param array $types The query parameters types to set.
*
* @return $this 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 indexed by parameter index or name.
*
* @return array The currently defined query parameters indexed by parameter index or name.
*/
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;
}
/**
* Gets all defined query parameter types for the query being constructed indexed by parameter index or name.
*
* @return array The currently defined query parameter types indexed by parameter index or name.
*/
public function getParameterTypes()
{
return $this->paramTypes;
}
/**
* Gets a (previously set) query parameter type of the query being constructed.
*
* @param mixed $key The key (index or name) of the bound parameter type.
*
* @return mixed The value of the bound parameter type.
*/
public function getParameterType($key)
{
return isset($this->paramTypes[$key]) ? $this->paramTypes[$key] : null;
}
/**
* Sets the position of the first result to retrieve (the "offset").
*
* @param integer $firstResult The first result to return.
*
* @return $this This QueryBuilder instance.
*/
public function setFirstResult($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 $this This QueryBuilder instance.
*/
public function setMaxResults($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 The 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 $this This QueryBuilder instance.
*/
public function add($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][] = $part;
}
} elseif ($isArray && is_array($sqlPart[key($sqlPart)])) {
$key = key($sqlPart);
$this->sqlParts[$sqlPartName][$key][] = $sqlPart[$key];
} elseif ($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.
*
* <code>
* $qb = $conn->createQueryBuilder()
* ->select('u.id', 'p.id')
* ->from('users', 'u')
* ->leftJoin('u', 'phonenumbers', 'p', 'u.id = p.user_id');
* </code>
*
* @param mixed $select The selection expressions.
*
* @return $this This QueryBuilder instance.
*/
public function select($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.
*
* <code>
* $qb = $conn->createQueryBuilder()
* ->select('u.id')
* ->addSelect('p.id')
* ->from('users', 'u')
* ->leftJoin('u', 'phonenumbers', 'u.id = p.user_id');
* </code>
*
* @param mixed $select The selection expression.
*
* @return $this This QueryBuilder instance.
*/
public function addSelect($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.
*
* <code>
* $qb = $conn->createQueryBuilder()
* ->delete('users', 'u')
* ->where('u.id = :user_id');
* ->setParameter(':user_id', 1);
* </code>
*
* @param string $delete The table whose rows are subject to the deletion.
* @param string $alias The table alias used in the constructed query.
*
* @return $this This QueryBuilder instance.
*/
public function delete($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
*
* <code>
* $qb = $conn->createQueryBuilder()
* ->update('users', 'u')
* ->set('u.password', md5('password'))
* ->where('u.id = ?');
* </code>
*
* @param string $update The table whose rows are subject to the update.
* @param string $alias The table alias used in the constructed query.
*
* @return $this This QueryBuilder instance.
*/
public function update($update = null, $alias = null)
{
$this->type = self::UPDATE;
if ( ! $update) {
return $this;
}
return $this->add('from', array(
'table' => $update,
'alias' => $alias
));
}
/**
* Turns the query being built into an insert query that inserts into
* a certain table
*
* <code>
* $qb = $conn->createQueryBuilder()
* ->insert('users')
* ->values(
* array(
* 'name' => '?',
* 'password' => '?'
* )
* );
* </code>
*
* @param string $insert The table into which the rows should be inserted.
*
* @return $this This QueryBuilder instance.
*/
public function insert($insert = null)
{
$this->type = self::INSERT;
if ( ! $insert) {
return $this;
}
return $this->add('from', array(
'table' => $insert
));
}
/**
* Creates and adds a query root corresponding to the table identified by the
* given alias, forming a cartesian product with any existing query roots.
*
* <code>
* $qb = $conn->createQueryBuilder()
* ->select('u.id')
* ->from('users', 'u')
* </code>
*
* @param string $from The table.
* @param string|null $alias The alias of the table.
*
* @return $this This QueryBuilder instance.
*/
public function from($from, $alias = null)
{
return $this->add('from', array(
'table' => $from,
'alias' => $alias
), true);
}
/**
* Creates and adds a join to the query.
*
* <code>
* $qb = $conn->createQueryBuilder()
* ->select('u.name')
* ->from('users', 'u')
* ->join('u', 'phonenumbers', 'p', 'p.is_primary = 1');
* </code>
*
* @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 $this This QueryBuilder instance.
*/
public function join($fromAlias, $join, $alias, $condition = null)
{
return $this->innerJoin($fromAlias, $join, $alias, $condition);
}
/**
* Creates and adds a join to the query.
*
* <code>
* $qb = $conn->createQueryBuilder()
* ->select('u.name')
* ->from('users', 'u')
* ->innerJoin('u', 'phonenumbers', 'p', 'p.is_primary = 1');
* </code>
*
* @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 $this This QueryBuilder instance.
*/
public function innerJoin($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.
*
* <code>
* $qb = $conn->createQueryBuilder()
* ->select('u.name')
* ->from('users', 'u')
* ->leftJoin('u', 'phonenumbers', 'p', 'p.is_primary = 1');
* </code>
*
* @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 $this This QueryBuilder instance.
*/
public function leftJoin($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.
*
* <code>
* $qb = $conn->createQueryBuilder()
* ->select('u.name')
* ->from('users', 'u')
* ->rightJoin('u', 'phonenumbers', 'p', 'p.is_primary = 1');
* </code>
*
* @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 $this This QueryBuilder instance.
*/
public function rightJoin($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.
*
* <code>
* $qb = $conn->createQueryBuilder()
* ->update('users', 'u')
* ->set('u.password', md5('password'))
* ->where('u.id = ?');
* </code>
*
* @param string $key The column to set.
* @param string $value The value, expression, placeholder, etc.
*
* @return $this This QueryBuilder instance.
*/
public function set($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.
*
* <code>
* $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);
* </code>
*
* @param mixed $predicates The restriction predicates.
*
* @return $this This QueryBuilder instance.
*/
public function where($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.
*
* <code>
* $qb = $conn->createQueryBuilder()
* ->select('u')
* ->from('users', 'u')
* ->where('u.username LIKE ?')
* ->andWhere('u.is_active = 1');
* </code>
*
* @param mixed $where The query restrictions.
*
* @return $this This QueryBuilder instance.
*
* @see where()
*/
public function andWhere($where)
{
$args = func_get_args();
$where = $this->getQueryPart('where');
if ($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.
*
* <code>
* $qb = $em->createQueryBuilder()
* ->select('u.name')
* ->from('users', 'u')
* ->where('u.id = 1')
* ->orWhere('u.id = 2');
* </code>
*
* @param mixed $where The WHERE statement.
*
* @return $this This QueryBuilder instance.
*
* @see where()
*/
public function orWhere($where)
{
$args = func_get_args();
$where = $this->getQueryPart('where');
if ($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.
*
* <code>
* $qb = $conn->createQueryBuilder()
* ->select('u.name')
* ->from('users', 'u')
* ->groupBy('u.id');
* </code>
*
* @param mixed $groupBy The grouping expression.
*
* @return $this This QueryBuilder instance.
*/
public function groupBy($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.
*
* <code>
* $qb = $conn->createQueryBuilder()
* ->select('u.name')
* ->from('users', 'u')
* ->groupBy('u.lastLogin');
* ->addGroupBy('u.createdAt')
* </code>
*
* @param mixed $groupBy The grouping expression.
*
* @return $this This QueryBuilder instance.
*/
public function addGroupBy($groupBy)
{
if (empty($groupBy)) {
return $this;
}
$groupBy = is_array($groupBy) ? $groupBy : func_get_args();
return $this->add('groupBy', $groupBy, true);
}
/**
* Sets a value for a column in an insert query.
*
* <code>
* $qb = $conn->createQueryBuilder()
* ->insert('users')
* ->values(
* array(
* 'name' => '?'
* )
* )
* ->setValue('password', '?');
* </code>
*
* @param string $column The column into which the value should be inserted.
* @param string $value The value that should be inserted into the column.
*
* @return $this This QueryBuilder instance.
*/
public function setValue($column, $value)
{
$this->sqlParts['values'][$column] = $value;
return $this;
}
/**
* Specifies values for an insert query indexed by column names.
* Replaces any previous values, if any.
*
* <code>
* $qb = $conn->createQueryBuilder()
* ->insert('users')
* ->values(
* array(
* 'name' => '?',
* 'password' => '?'
* )
* );
* </code>
*
* @param array $values The values to specify for the insert query indexed by column names.
*
* @return $this This QueryBuilder instance.
*/
public function values(array $values)
{
return $this->add('values', $values);
}
/**
* 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 $this This QueryBuilder instance.
*/
public function having($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 $this This QueryBuilder instance.
*/
public function andHaving($having)
{
$args = func_get_args();
$having = $this->getQueryPart('having');
if ($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 $this This QueryBuilder instance.
*/
public function orHaving($having)
{
$args = func_get_args();
$having = $this->getQueryPart('having');
if ($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 $this This QueryBuilder instance.
*/
public function orderBy($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 $this This QueryBuilder instance.
*/
public function addOrderBy($sort, $order = null)
{
return $this->add('orderBy', $sort . ' ' . (! $order ? 'ASC' : $order), true);
}
/**
* Gets a query part by its name.
*
* @param string $queryPartName
*
* @return mixed
*/
public function getQueryPart($queryPartName)
{
return $this->sqlParts[$queryPartName];
}
/**
* Gets all query parts.
*
* @return array
*/
public function getQueryParts()
{
return $this->sqlParts;
}
/**
* Resets SQL parts.
*
* @param array|null $queryPartNames
*
* @return $this This QueryBuilder instance.
*/
public function resetQueryParts($queryPartNames = null)
{
if (is_null($queryPartNames)) {
$queryPartNames = array_keys($this->sqlParts);
}
foreach ($queryPartNames as $queryPartName) {
$this->resetQueryPart($queryPartName);
}
return $this;
}
/**
* Resets a single SQL part.
*
* @param string $queryPartName
*
* @return $this This QueryBuilder instance.
*/
public function resetQueryPart($queryPartName)
{
$this->sqlParts[$queryPartName] = is_array($this->sqlParts[$queryPartName])
? array() : null;
$this->state = self::STATE_DIRTY;
return $this;
}
/**
* @return string
*
* @throws \Doctrine\DBAL\Query\QueryException
*/
private function getSQLForSelect()
{
$query = 'SELECT ' . implode(', ', $this->sqlParts['select']);
$query .= ($this->sqlParts['from'] ? ' FROM ' . implode(', ', $this->getFromClauses()) : '')
. ($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(', ', $this->sqlParts['orderBy']) : '');
if ($this->isLimitQuery()) {
return $this->connection->getDatabasePlatform()->modifyLimitQuery(
$query,
$this->maxResults,
$this->firstResult
);
}
return $query;
}
/**
* @return string[]
*/
private function getFromClauses()
{
$fromClauses = array();
$knownAliases = array();
// Loop through all FROM clauses
foreach ($this->sqlParts['from'] as $from) {
if ($from['alias'] === null) {
$tableSql = $from['table'];
$tableReference = $from['table'];
} else {
$tableSql = $from['table'] . ' ' . $from['alias'];
$tableReference = $from['alias'];
}
$knownAliases[$tableReference] = true;
$fromClauses[$tableReference] = $tableSql . $this->getSQLForJoins($tableReference, $knownAliases);
}
$this->verifyAllAliasesAreKnown($knownAliases);
return $fromClauses;
}
/**
* @param array $knownAliases
*
* @throws QueryException
*/
private function verifyAllAliasesAreKnown(array $knownAliases)
{
foreach ($this->sqlParts['join'] as $fromAlias => $joins) {
if ( ! isset($knownAliases[$fromAlias])) {
throw QueryException::unknownAlias($fromAlias, array_keys($knownAliases));
}
}
}
/**
* @return bool
*/
private function isLimitQuery()
{
return $this->maxResults !== null || $this->firstResult !== null;
}
/**
* Converts this instance into an INSERT string in SQL.
*
* @return string
*/
private function getSQLForInsert()
{
return 'INSERT INTO ' . $this->sqlParts['from']['table'] .
' (' . implode(', ', array_keys($this->sqlParts['values'])) . ')' .
' VALUES(' . implode(', ', $this->sqlParts['values']) . ')';
}
/**
* 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();
}
/**
* Creates 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:
* <code>
* $value = 2;
* $q->eq( 'id', $q->bindValue( $value ) );
* $stmt = $q->executeQuery(); // executed with 'id = 2'
* </code>
*
* @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;
}
/**
* Creates 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:
* <code>
* $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))
* </code>
*
* @param mixed $value
* @param integer $type
*
* @return string
*/
public function createPositionalParameter($value, $type = \PDO::PARAM_STR)
{
$this->boundCounter++;
$this->setParameter($this->boundCounter, $value, $type);
return "?";
}
/**
* @param string $fromAlias
* @param array $knownAliases
*
* @return string
*/
private function getSQLForJoins($fromAlias, array &$knownAliases)
{
$sql = '';
if (isset($this->sqlParts['join'][$fromAlias])) {
foreach ($this->sqlParts['join'][$fromAlias] as $join) {
if (array_key_exists($join['joinAlias'], $knownAliases)) {
throw QueryException::nonUniqueAlias($join['joinAlias'], array_keys($knownAliases));
}
$sql .= ' ' . strtoupper($join['joinType'])
. ' JOIN ' . $join['joinTable'] . ' ' . $join['joinAlias']
. ' ON ' . ((string) $join['joinCondition']);
$knownAliases[$join['joinAlias']] = true;
}
foreach ($this->sqlParts['join'][$fromAlias] as $join) {
$sql .= $this->getSQLForJoins($join['joinAlias'], $knownAliases);
}
}
return $sql;
}
/**
* Deep clone of all expression objects in the SQL parts.
*
* @return void
*/
public function __clone()
{
foreach ($this->sqlParts as $part => $elements) {
if (is_array($this->sqlParts[$part])) {
foreach ($this->sqlParts[$part] as $idx => $element) {
if (is_object($element)) {
$this->sqlParts[$part][$idx] = clone $element;
}
}
} elseif (is_object($elements)) {
$this->sqlParts[$part] = clone $elements;
}
}
foreach ($this->params as $name => $param) {
if (is_object($param)) {
$this->params[$name] = clone $param;
}
}
}
}
| .. | |||||
| Expression | |||||
| QueryBuilder.php | |||||
| QueryException.php |