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tarnfeld revised this gist . 1 changed file with 22 additions and 3 deletions. View gist @ 13f68b4
SqlWalker.php
25 
@@ -138,6 +138,13 @@ class SqlWalker implements TreeWalker
private $rootAliases = array();
/**
+ * Any DQL alises used for left joins
+ *
+ * @var array
+ */
+ private $leftJoinAliases = array();
+
+ /**
* Flag that indicates whether to generate SQL table aliases in the SQL.
* These should only be generated for SELECT queries, not for UPDATE/DELETE.
*
@@ -399,8 +406,15 @@ private function _generateDiscriminatorColumnConditionSQL(array $dqlAliases)
$values[] = $conn->quote($this->em->getClassMetadata($subclassName)->discriminatorValue);
}
- $sqlParts[] = (($this->useSqlTableAliases) ? $this->getSQLTableAlias($class->getTableName(), $dqlAlias) . '.' : '')
- . $class->discriminatorColumn['name'] . ' IN (' . implode(', ', $values) . ')';
+ $field = (($this->useSqlTableAliases) ? $this->getSQLTableAlias($class->getTableName(), $dqlAlias) . '.' : '')
+ . $class->discriminatorColumn['name'];
+ $sql = $field . ' IN (' . implode(', ', $values) . ')';
+
+ if (in_array($dqlAlias, $this->leftJoinAliases)) {
+ $sql = '(' . $sql . ' OR ' . $field . ' IS NULL )';
+ }
+
+ $sqlParts[] = $sql;
}
$sql = implode(' AND ', $sqlParts);
@@ -1008,6 +1022,10 @@ public function walkJoin($join)
? ' LEFT JOIN '
: ' INNER JOIN ';
+ if ($joinType == AST\Join::JOIN_TYPE_LEFT) {
+ $this->leftJoinAliases[] = $joinDeclaration->aliasIdentificationVariable;
+ }
+
switch (true) {
case ($joinDeclaration instanceof \Doctrine\ORM\Query\AST\RangeVariableDeclaration):
$class = $this->em->getClassMetadata($joinDeclaration->abstractSchemaName);
@@ -1017,6 +1035,7 @@ public function walkJoin($join)
$sql .= $this->walkRangeVariableDeclaration($joinDeclaration)
. $condExprConjunction . '(' . $this->walkConditionalExpression($join->conditionalExpression) . ')';
+
break;
case ($joinDeclaration instanceof \Doctrine\ORM\Query\AST\JoinAssociationDeclaration):
@@ -2208,4 +2227,4 @@ public function walkResultVariable($resultVariable)
return $resultAlias;
}
-}
\ No newline at end of file
+}
tarnfeld created this gist . View gist @ 01a837e
SqlWalker.php
2,211 
@@ -0,0 +1,2211 @@
+<?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\ORM\Query;
+
+use Doctrine\DBAL\LockMode,
+ Doctrine\DBAL\Types\Type,
+ Doctrine\ORM\Mapping\ClassMetadata,
+ Doctrine\ORM\Query,
+ Doctrine\ORM\Query\QueryException,
+ Doctrine\ORM\Mapping\ClassMetadataInfo;
+
+/**
+ * The SqlWalker is a TreeWalker that walks over a DQL AST and constructs
+ * the corresponding SQL.
+ *
+ * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
+ * @author Roman Borschel <roman@code-factory.org>
+ * @author Benjamin Eberlei <kontakt@beberlei.de>
+ * @author Alexander <iam.asm89@gmail.com>
+ * @since 2.0
+ * @todo Rename: SQLWalker
+ */
+class SqlWalker implements TreeWalker
+{
+ /**
+ * @var string
+ */
+ const HINT_DISTINCT = 'doctrine.distinct';
+
+ /**
+ * @var ResultSetMapping
+ */
+ private $rsm;
+
+ /**
+ * Counters for generating unique column aliases.
+ *
+ * @var integer
+ */
+ private $aliasCounter = 0;
+
+ /**
+ * Counters for generating unique table aliases.
+ *
+ * @var integer
+ */
+ private $tableAliasCounter = 0;
+
+ /**
+ * Counters for generating unique scalar result.
+ *
+ * @var integer
+ */
+ private $scalarResultCounter = 1;
+
+ /**
+ * Counters for generating unique parameter indexes.
+ *
+ * @var integer
+ */
+ private $sqlParamIndex = 0;
+
+ /**
+ * @var ParserResult
+ */
+ private $parserResult;
+
+ /**
+ * @var EntityManager
+ */
+ private $em;
+
+ /**
+ * @var \Doctrine\DBAL\Connection
+ */
+ private $conn;
+
+ /**
+ * @var AbstractQuery
+ */
+ private $query;
+
+ /**
+ * @var array
+ */
+ private $tableAliasMap = array();
+
+ /**
+ * Map from result variable names to their SQL column alias names.
+ *
+ * @var array
+ */
+ private $scalarResultAliasMap = array();
+
+ /**
+ * Map from DQL-Alias + Field-Name to SQL Column Alias
+ *
+ * @var array
+ */
+ private $scalarFields = array();
+
+ /**
+ * Map of all components/classes that appear in the DQL query.
+ *
+ * @var array
+ */
+ private $queryComponents;
+
+ /**
+ * A list of classes that appear in non-scalar SelectExpressions.
+ *
+ * @var array
+ */
+ private $selectedClasses = array();
+
+ /**
+ * The DQL alias of the root class of the currently traversed query.
+ *
+ * @var array
+ */
+ private $rootAliases = array();
+
+ /**
+ * Flag that indicates whether to generate SQL table aliases in the SQL.
+ * These should only be generated for SELECT queries, not for UPDATE/DELETE.
+ *
+ * @var boolean
+ */
+ private $useSqlTableAliases = true;
+
+ /**
+ * The database platform abstraction.
+ *
+ * @var AbstractPlatform
+ */
+ private $platform;
+
+ /**
+ * The quote strategy.
+ *
+ * @var \Doctrine\ORM\Mapping\QuoteStrategy
+ */
+ private $quoteStrategy;
+
+ /**
+ * {@inheritDoc}
+ */
+ public function __construct($query, $parserResult, array $queryComponents)
+ {
+ $this->query = $query;
+ $this->parserResult = $parserResult;
+ $this->queryComponents = $queryComponents;
+ $this->rsm = $parserResult->getResultSetMapping();
+ $this->em = $query->getEntityManager();
+ $this->conn = $this->em->getConnection();
+ $this->platform = $this->conn->getDatabasePlatform();
+ $this->quoteStrategy = $this->em->getConfiguration()->getQuoteStrategy();
+ }
+
+ /**
+ * Gets the Query instance used by the walker.
+ *
+ * @return Query.
+ */
+ public function getQuery()
+ {
+ return $this->query;
+ }
+
+ /**
+ * Gets the Connection used by the walker.
+ *
+ * @return Connection
+ */
+ public function getConnection()
+ {
+ return $this->conn;
+ }
+
+ /**
+ * Gets the EntityManager used by the walker.
+ *
+ * @return EntityManager
+ */
+ public function getEntityManager()
+ {
+ return $this->em;
+ }
+
+ /**
+ * Gets the information about a single query component.
+ *
+ * @param string $dqlAlias The DQL alias.
+ * @return array
+ */
+ public function getQueryComponent($dqlAlias)
+ {
+ return $this->queryComponents[$dqlAlias];
+ }
+
+ /**
+ * Gets an executor that can be used to execute the result of this walker.
+ *
+ * @return AbstractExecutor
+ */
+ public function getExecutor($AST)
+ {
+ switch (true) {
+ case ($AST instanceof AST\DeleteStatement):
+ $primaryClass = $this->em->getClassMetadata($AST->deleteClause->abstractSchemaName);
+
+ return ($primaryClass->isInheritanceTypeJoined())
+ ? new Exec\MultiTableDeleteExecutor($AST, $this)
+ : new Exec\SingleTableDeleteUpdateExecutor($AST, $this);
+
+ case ($AST instanceof AST\UpdateStatement):
+ $primaryClass = $this->em->getClassMetadata($AST->updateClause->abstractSchemaName);
+
+ return ($primaryClass->isInheritanceTypeJoined())
+ ? new Exec\MultiTableUpdateExecutor($AST, $this)
+ : new Exec\SingleTableDeleteUpdateExecutor($AST, $this);
+
+ default:
+ return new Exec\SingleSelectExecutor($AST, $this);
+ }
+ }
+
+ /**
+ * Generates a unique, short SQL table alias.
+ *
+ * @param string $tableName Table name
+ * @param string $dqlAlias The DQL alias.
+ * @return string Generated table alias.
+ */
+ public function getSQLTableAlias($tableName, $dqlAlias = '')
+ {
+ $tableName .= ($dqlAlias) ? '@[' . $dqlAlias . ']' : '';
+
+ if ( ! isset($this->tableAliasMap[$tableName])) {
+ $this->tableAliasMap[$tableName] = strtolower(substr($tableName, 0, 1)) . $this->tableAliasCounter++ . '_';
+ }
+
+ return $this->tableAliasMap[$tableName];
+ }
+
+ /**
+ * Forces the SqlWalker to use a specific alias for a table name, rather than
+ * generating an alias on its own.
+ *
+ * @param string $tableName
+ * @param string $alias
+ * @param string $dqlAlias
+ * @return string
+ */
+ public function setSQLTableAlias($tableName, $alias, $dqlAlias = '')
+ {
+ $tableName .= ($dqlAlias) ? '@[' . $dqlAlias . ']' : '';
+
+ $this->tableAliasMap[$tableName] = $alias;
+
+ return $alias;
+ }
+
+ /**
+ * Gets an SQL column alias for a column name.
+ *
+ * @param string $columnName
+ * @return string
+ */
+ public function getSQLColumnAlias($columnName)
+ {
+ return $this->quoteStrategy->getColumnAlias($columnName, $this->aliasCounter++, $this->platform);
+ }
+
+ /**
+ * Generates the SQL JOINs that are necessary for Class Table Inheritance
+ * for the given class.
+ *
+ * @param ClassMetadata $class The class for which to generate the joins.
+ * @param string $dqlAlias The DQL alias of the class.
+ * @return string The SQL.
+ */
+ private function _generateClassTableInheritanceJoins($class, $dqlAlias)
+ {
+ $sql = '';
+
+ $baseTableAlias = $this->getSQLTableAlias($class->getTableName(), $dqlAlias);
+
+ // INNER JOIN parent class tables
+ foreach ($class->parentClasses as $parentClassName) {
+ $parentClass = $this->em->getClassMetadata($parentClassName);
+ $tableAlias = $this->getSQLTableAlias($parentClass->getTableName(), $dqlAlias);
+
+ // If this is a joined association we must use left joins to preserve the correct result.
+ $sql .= isset($this->queryComponents[$dqlAlias]['relation']) ? ' LEFT ' : ' INNER ';
+ $sql .= 'JOIN ' . $this->quoteStrategy->getTableName($parentClass, $this->platform) . ' ' . $tableAlias . ' ON ';
+
+ $sqlParts = array();
+
+ foreach ($this->quoteStrategy->getIdentifierColumnNames($class, $this->platform) as $columnName) {
+ $sqlParts[] = $baseTableAlias . '.' . $columnName . ' = ' . $tableAlias . '.' . $columnName;
+ }
+
+ // Add filters on the root class
+ if ($filterSql = $this->generateFilterConditionSQL($parentClass, $tableAlias)) {
+ $sqlParts[] = $filterSql;
+ }
+
+ $sql .= implode(' AND ', $sqlParts);
+ }
+
+ // Ignore subclassing inclusion if partial objects is disallowed
+ if ($this->query->getHint(Query::HINT_FORCE_PARTIAL_LOAD)) {
+ return $sql;
+ }
+
+ // LEFT JOIN child class tables
+ foreach ($class->subClasses as $subClassName) {
+ $subClass = $this->em->getClassMetadata($subClassName);
+ $tableAlias = $this->getSQLTableAlias($subClass->getTableName(), $dqlAlias);
+
+ $sql .= ' LEFT JOIN ' . $this->quoteStrategy->getTableName($subClass, $this->platform) . ' ' . $tableAlias . ' ON ';
+
+ $sqlParts = array();
+
+ foreach ($this->quoteStrategy->getIdentifierColumnNames($subClass, $this->platform) as $columnName) {
+ $sqlParts[] = $baseTableAlias . '.' . $columnName . ' = ' . $tableAlias . '.' . $columnName;
+ }
+
+ $sql .= implode(' AND ', $sqlParts);
+ }
+
+ return $sql;
+ }
+
+ private function _generateOrderedCollectionOrderByItems()
+ {
+ $sqlParts = array();
+
+ foreach ($this->selectedClasses as $selectedClass) {
+ $dqlAlias = $selectedClass['dqlAlias'];
+ $qComp = $this->queryComponents[$dqlAlias];
+
+ if ( ! isset($qComp['relation']['orderBy'])) continue;
+
+ foreach ($qComp['relation']['orderBy'] as $fieldName => $orientation) {
+ $columnName = $this->quoteStrategy->getColumnName($fieldName, $qComp['metadata'], $this->platform);
+ $tableName = ($qComp['metadata']->isInheritanceTypeJoined())
+ ? $this->em->getUnitOfWork()->getEntityPersister($qComp['metadata']->name)->getOwningTable($fieldName)
+ : $qComp['metadata']->getTableName();
+
+ $sqlParts[] = $this->getSQLTableAlias($tableName, $dqlAlias) . '.' . $columnName . ' ' . $orientation;
+ }
+ }
+
+ return implode(', ', $sqlParts);
+ }
+
+ /**
+ * Generates a discriminator column SQL condition for the class with the given DQL alias.
+ *
+ * @param array $dqlAliases List of root DQL aliases to inspect for discriminator restrictions.
+ * @return string
+ */
+ private function _generateDiscriminatorColumnConditionSQL(array $dqlAliases)
+ {
+ $sqlParts = array();
+
+ foreach ($dqlAliases as $dqlAlias) {
+ $class = $this->queryComponents[$dqlAlias]['metadata'];
+
+ if ( ! $class->isInheritanceTypeSingleTable()) continue;
+
+ $conn = $this->em->getConnection();
+ $values = array();
+
+ if ($class->discriminatorValue !== null) { // discrimnators can be 0
+ $values[] = $conn->quote($class->discriminatorValue);
+ }
+
+ foreach ($class->subClasses as $subclassName) {
+ $values[] = $conn->quote($this->em->getClassMetadata($subclassName)->discriminatorValue);
+ }
+
+ $sqlParts[] = (($this->useSqlTableAliases) ? $this->getSQLTableAlias($class->getTableName(), $dqlAlias) . '.' : '')
+ . $class->discriminatorColumn['name'] . ' IN (' . implode(', ', $values) . ')';
+ }
+
+ $sql = implode(' AND ', $sqlParts);
+
+ return (count($sqlParts) > 1) ? '(' . $sql . ')' : $sql;
+ }
+
+ /**
+ * Generates the filter SQL for a given entity and table alias.
+ *
+ * @param ClassMetadata $targetEntity Metadata of the target entity.
+ * @param string $targetTableAlias The table alias of the joined/selected table.
+ *
+ * @return string The SQL query part to add to a query.
+ */
+ private function generateFilterConditionSQL(ClassMetadata $targetEntity, $targetTableAlias)
+ {
+ if (!$this->em->hasFilters()) {
+ return '';
+ }
+
+ switch($targetEntity->inheritanceType) {
+ case ClassMetadata::INHERITANCE_TYPE_NONE:
+ break;
+ case ClassMetadata::INHERITANCE_TYPE_JOINED:
+ // The classes in the inheritance will be added to the query one by one,
+ // but only the root node is getting filtered
+ if ($targetEntity->name !== $targetEntity->rootEntityName) {
+ return '';
+ }
+ break;
+ case ClassMetadata::INHERITANCE_TYPE_SINGLE_TABLE:
+ // With STI the table will only be queried once, make sure that the filters
+ // are added to the root entity
+ $targetEntity = $this->em->getClassMetadata($targetEntity->rootEntityName);
+ break;
+ default:
+ //@todo: throw exception?
+ return '';
+ break;
+ }
+
+ $filterClauses = array();
+ foreach ($this->em->getFilters()->getEnabledFilters() as $filter) {
+ if ('' !== $filterExpr = $filter->addFilterConstraint($targetEntity, $targetTableAlias)) {
+ $filterClauses[] = '(' . $filterExpr . ')';
+ }
+ }
+
+ return implode(' AND ', $filterClauses);
+ }
+ /**
+ * Walks down a SelectStatement AST node, thereby generating the appropriate SQL.
+ *
+ * @return string The SQL.
+ */
+ public function walkSelectStatement(AST\SelectStatement $AST)
+ {
+ $sql = $this->walkSelectClause($AST->selectClause);
+ $sql .= $this->walkFromClause($AST->fromClause);
+ $sql .= $this->walkWhereClause($AST->whereClause);
+ $sql .= $AST->groupByClause ? $this->walkGroupByClause($AST->groupByClause) : '';
+ $sql .= $AST->havingClause ? $this->walkHavingClause($AST->havingClause) : '';
+
+ if (($orderByClause = $AST->orderByClause) !== null) {
+ $sql .= $AST->orderByClause ? $this->walkOrderByClause($AST->orderByClause) : '';
+ } else if (($orderBySql = $this->_generateOrderedCollectionOrderByItems()) !== '') {
+ $sql .= ' ORDER BY ' . $orderBySql;
+ }
+
+ $sql = $this->platform->modifyLimitQuery(
+ $sql, $this->query->getMaxResults(), $this->query->getFirstResult()
+ );
+
+ if (($lockMode = $this->query->getHint(Query::HINT_LOCK_MODE)) !== false) {
+ switch ($lockMode) {
+ case LockMode::PESSIMISTIC_READ:
+ $sql .= ' ' . $this->platform->getReadLockSQL();
+ break;
+
+ case LockMode::PESSIMISTIC_WRITE:
+ $sql .= ' ' . $this->platform->getWriteLockSQL();
+ break;
+
+ case LockMode::OPTIMISTIC:
+ foreach ($this->selectedClasses as $selectedClass) {
+ if ( ! $selectedClass['class']->isVersioned) {
+ throw \Doctrine\ORM\OptimisticLockException::lockFailed($selectedClass['class']->name);
+ }
+ }
+ break;
+ case LockMode::NONE:
+ break;
+
+ default:
+ throw \Doctrine\ORM\Query\QueryException::invalidLockMode();
+ }
+ }
+
+ return $sql;
+ }
+
+ /**
+ * Walks down an UpdateStatement AST node, thereby generating the appropriate SQL.
+ *
+ * @param UpdateStatement
+ * @return string The SQL.
+ */
+ public function walkUpdateStatement(AST\UpdateStatement $AST)
+ {
+ $this->useSqlTableAliases = false;
+
+ return $this->walkUpdateClause($AST->updateClause)
+ . $this->walkWhereClause($AST->whereClause);
+ }
+
+ /**
+ * Walks down a DeleteStatement AST node, thereby generating the appropriate SQL.
+ *
+ * @param DeleteStatement
+ * @return string The SQL.
+ */
+ public function walkDeleteStatement(AST\DeleteStatement $AST)
+ {
+ $this->useSqlTableAliases = false;
+
+ return $this->walkDeleteClause($AST->deleteClause)
+ . $this->walkWhereClause($AST->whereClause);
+ }
+
+ /**
+ * Walks down an IdentificationVariable AST node, thereby generating the appropriate SQL.
+ * This one differs of ->walkIdentificationVariable() because it generates the entity identifiers.
+ *
+ * @param string $identVariable
+ * @return string
+ */
+ public function walkEntityIdentificationVariable($identVariable)
+ {
+ $class = $this->queryComponents[$identVariable]['metadata'];
+ $tableAlias = $this->getSQLTableAlias($class->getTableName(), $identVariable);
+ $sqlParts = array();
+
+ foreach ($this->quoteStrategy->getIdentifierColumnNames($class, $this->platform) as $columnName) {
+ $sqlParts[] = $tableAlias . '.' . $columnName;
+ }
+
+ return implode(', ', $sqlParts);
+ }
+
+ /**
+ * Walks down an IdentificationVariable (no AST node associated), thereby generating the SQL.
+ *
+ * @param string $identificationVariable
+ * @param string $fieldName
+ * @return string The SQL.
+ */
+ public function walkIdentificationVariable($identificationVariable, $fieldName = null)
+ {
+ $class = $this->queryComponents[$identificationVariable]['metadata'];
+
+ if (
+ $fieldName !== null && $class->isInheritanceTypeJoined() &&
+ isset($class->fieldMappings[$fieldName]['inherited'])
+ ) {
+ $class = $this->em->getClassMetadata($class->fieldMappings[$fieldName]['inherited']);
+ }
+
+ return $this->getSQLTableAlias($class->getTableName(), $identificationVariable);
+ }
+
+ /**
+ * Walks down a PathExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param mixed
+ * @return string The SQL.
+ */
+ public function walkPathExpression($pathExpr)
+ {
+ $sql = '';
+
+ switch ($pathExpr->type) {
+ case AST\PathExpression::TYPE_STATE_FIELD:
+ $fieldName = $pathExpr->field;
+ $dqlAlias = $pathExpr->identificationVariable;
+ $class = $this->queryComponents[$dqlAlias]['metadata'];
+
+ if ($this->useSqlTableAliases) {
+ $sql .= $this->walkIdentificationVariable($dqlAlias, $fieldName) . '.';
+ }
+
+ $sql .= $this->quoteStrategy->getColumnName($fieldName, $class, $this->platform);
+ break;
+
+ case AST\PathExpression::TYPE_SINGLE_VALUED_ASSOCIATION:
+ // 1- the owning side:
+ // Just use the foreign key, i.e. u.group_id
+ $fieldName = $pathExpr->field;
+ $dqlAlias = $pathExpr->identificationVariable;
+ $class = $this->queryComponents[$dqlAlias]['metadata'];
+
+ if (isset($class->associationMappings[$fieldName]['inherited'])) {
+ $class = $this->em->getClassMetadata($class->associationMappings[$fieldName]['inherited']);
+ }
+
+ $assoc = $class->associationMappings[$fieldName];
+
+ if ( ! $assoc['isOwningSide']) {
+ throw QueryException::associationPathInverseSideNotSupported();
+ }
+
+ // COMPOSITE KEYS NOT (YET?) SUPPORTED
+ if (count($assoc['sourceToTargetKeyColumns']) > 1) {
+ throw QueryException::associationPathCompositeKeyNotSupported();
+ }
+
+ if ($this->useSqlTableAliases) {
+ $sql .= $this->getSQLTableAlias($class->getTableName(), $dqlAlias) . '.';
+ }
+
+ $sql .= reset($assoc['targetToSourceKeyColumns']);
+ break;
+
+ default:
+ throw QueryException::invalidPathExpression($pathExpr);
+ }
+
+ return $sql;
+ }
+
+ /**
+ * Walks down a SelectClause AST node, thereby generating the appropriate SQL.
+ *
+ * @param $selectClause
+ * @return string The SQL.
+ */
+ public function walkSelectClause($selectClause)
+ {
+ $sql = 'SELECT ' . (($selectClause->isDistinct) ? 'DISTINCT ' : '');
+ $sqlSelectExpressions = array_filter(array_map(array($this, 'walkSelectExpression'), $selectClause->selectExpressions));
+
+ if ($this->query->getHint(Query::HINT_INTERNAL_ITERATION) == true && $selectClause->isDistinct) {
+ $this->query->setHint(self::HINT_DISTINCT, true);
+ }
+
+ $addMetaColumns = ! $this->query->getHint(Query::HINT_FORCE_PARTIAL_LOAD) &&
+ $this->query->getHydrationMode() == Query::HYDRATE_OBJECT
+ ||
+ $this->query->getHydrationMode() != Query::HYDRATE_OBJECT &&
+ $this->query->getHint(Query::HINT_INCLUDE_META_COLUMNS);
+
+ foreach ($this->selectedClasses as $selectedClass) {
+ $class = $selectedClass['class'];
+ $dqlAlias = $selectedClass['dqlAlias'];
+ $resultAlias = $selectedClass['resultAlias'];
+
+ // Register as entity or joined entity result
+ if ($this->queryComponents[$dqlAlias]['relation'] === null) {
+ $this->rsm->addEntityResult($class->name, $dqlAlias, $resultAlias);
+ } else {
+ $this->rsm->addJoinedEntityResult(
+ $class->name,
+ $dqlAlias,
+ $this->queryComponents[$dqlAlias]['parent'],
+ $this->queryComponents[$dqlAlias]['relation']['fieldName']
+ );
+ }
+
+ if ($class->isInheritanceTypeSingleTable() || $class->isInheritanceTypeJoined()) {
+ // Add discriminator columns to SQL
+ $rootClass = $this->em->getClassMetadata($class->rootEntityName);
+ $tblAlias = $this->getSQLTableAlias($rootClass->getTableName(), $dqlAlias);
+ $discrColumn = $rootClass->discriminatorColumn;
+ $columnAlias = $this->getSQLColumnAlias($discrColumn['name']);
+
+ $sqlSelectExpressions[] = $tblAlias . '.' . $discrColumn['name'] . ' AS ' . $columnAlias;
+
+ $this->rsm->setDiscriminatorColumn($dqlAlias, $columnAlias);
+ $this->rsm->addMetaResult($dqlAlias, $columnAlias, $discrColumn['fieldName']);
+ }
+
+ // Add foreign key columns to SQL, if necessary
+ if ( ! $addMetaColumns && ! $class->containsForeignIdentifier) {
+ continue;
+ }
+
+ // Add foreign key columns of class and also parent classes
+ foreach ($class->associationMappings as $assoc) {
+ if ( ! ($assoc['isOwningSide'] && $assoc['type'] & ClassMetadata::TO_ONE)) {
+ continue;
+ } else if ( !$addMetaColumns && !isset($assoc['id'])) {
+ continue;
+ }
+
+ $owningClass = (isset($assoc['inherited'])) ? $this->em->getClassMetadata($assoc['inherited']) : $class;
+ $sqlTableAlias = $this->getSQLTableAlias($owningClass->getTableName(), $dqlAlias);
+
+ foreach ($assoc['targetToSourceKeyColumns'] as $srcColumn) {
+ $columnAlias = $this->getSQLColumnAlias($srcColumn);
+
+ $sqlSelectExpressions[] = $sqlTableAlias . '.' . $srcColumn . ' AS ' . $columnAlias;
+
+ $this->rsm->addMetaResult($dqlAlias, $columnAlias, $srcColumn, (isset($assoc['id']) && $assoc['id'] === true));
+ }
+ }
+
+ // Add foreign key columns to SQL, if necessary
+ if ( ! $addMetaColumns) {
+ continue;
+ }
+
+ // Add foreign key columns of subclasses
+ foreach ($class->subClasses as $subClassName) {
+ $subClass = $this->em->getClassMetadata($subClassName);
+ $sqlTableAlias = $this->getSQLTableAlias($subClass->getTableName(), $dqlAlias);
+
+ foreach ($subClass->associationMappings as $assoc) {
+ // Skip if association is inherited
+ if (isset($assoc['inherited'])) continue;
+
+ if ( ! ($assoc['isOwningSide'] && $assoc['type'] & ClassMetadata::TO_ONE)) continue;
+
+ foreach ($assoc['targetToSourceKeyColumns'] as $srcColumn) {
+ $columnAlias = $this->getSQLColumnAlias($srcColumn);
+
+ $sqlSelectExpressions[] = $sqlTableAlias . '.' . $srcColumn . ' AS ' . $columnAlias;
+
+ $this->rsm->addMetaResult($dqlAlias, $columnAlias, $srcColumn);
+ }
+ }
+ }
+ }
+
+ $sql .= implode(', ', $sqlSelectExpressions);
+
+ return $sql;
+ }
+
+ /**
+ * Walks down a FromClause AST node, thereby generating the appropriate SQL.
+ *
+ * @return string The SQL.
+ */
+ public function walkFromClause($fromClause)
+ {
+ $identificationVarDecls = $fromClause->identificationVariableDeclarations;
+ $sqlParts = array();
+
+ foreach ($identificationVarDecls as $identificationVariableDecl) {
+ $sql = $this->platform->appendLockHint(
+ $this->walkRangeVariableDeclaration($identificationVariableDecl->rangeVariableDeclaration),
+ $this->query->getHint(Query::HINT_LOCK_MODE)
+ );
+
+ foreach ($identificationVariableDecl->joins as $join) {
+ $sql .= $this->walkJoin($join);
+ }
+
+ if ($identificationVariableDecl->indexBy) {
+ $alias = $identificationVariableDecl->indexBy->simpleStateFieldPathExpression->identificationVariable;
+ $field = $identificationVariableDecl->indexBy->simpleStateFieldPathExpression->field;
+
+ if (isset($this->scalarFields[$alias][$field])) {
+ $this->rsm->addIndexByScalar($this->scalarFields[$alias][$field]);
+ } else {
+ $this->rsm->addIndexBy(
+ $identificationVariableDecl->indexBy->simpleStateFieldPathExpression->identificationVariable,
+ $identificationVariableDecl->indexBy->simpleStateFieldPathExpression->field
+ );
+ }
+ }
+
+ $sqlParts[] = $sql;
+ }
+
+ return ' FROM ' . implode(', ', $sqlParts);
+ }
+
+ /**
+ * Walks down a RangeVariableDeclaration AST node, thereby generating the appropriate SQL.
+ *
+ * @return string
+ */
+ public function walkRangeVariableDeclaration($rangeVariableDeclaration)
+ {
+ $class = $this->em->getClassMetadata($rangeVariableDeclaration->abstractSchemaName);
+ $dqlAlias = $rangeVariableDeclaration->aliasIdentificationVariable;
+
+ $this->rootAliases[] = $dqlAlias;
+
+ $sql = $class->getQuotedTableName($this->platform) . ' '
+ . $this->getSQLTableAlias($class->getTableName(), $dqlAlias);
+
+ if ($class->isInheritanceTypeJoined()) {
+ $sql .= $this->_generateClassTableInheritanceJoins($class, $dqlAlias);
+ }
+
+ return $sql;
+ }
+
+ /**
+ * Walks down a JoinAssociationDeclaration AST node, thereby generating the appropriate SQL.
+ *
+ * @return string
+ */
+ public function walkJoinAssociationDeclaration($joinAssociationDeclaration, $joinType = AST\Join::JOIN_TYPE_INNER)
+ {
+ $sql = '';
+
+ $associationPathExpression = $joinAssociationDeclaration->joinAssociationPathExpression;
+ $joinedDqlAlias = $joinAssociationDeclaration->aliasIdentificationVariable;
+ $indexBy = $joinAssociationDeclaration->indexBy;
+
+ $relation = $this->queryComponents[$joinedDqlAlias]['relation'];
+ $targetClass = $this->em->getClassMetadata($relation['targetEntity']);
+ $sourceClass = $this->em->getClassMetadata($relation['sourceEntity']);
+ $targetTableName = $targetClass->getQuotedTableName($this->platform);
+
+ $targetTableAlias = $this->getSQLTableAlias($targetClass->getTableName(), $joinedDqlAlias);
+ $sourceTableAlias = $this->getSQLTableAlias($sourceClass->getTableName(), $associationPathExpression->identificationVariable);
+
+ // Ensure we got the owning side, since it has all mapping info
+ $assoc = ( ! $relation['isOwningSide']) ? $targetClass->associationMappings[$relation['mappedBy']] : $relation;
+
+ if ($this->query->getHint(Query::HINT_INTERNAL_ITERATION) == true && (!$this->query->getHint(self::HINT_DISTINCT) || isset($this->selectedClasses[$joinedDqlAlias]))) {
+ if ($relation['type'] == ClassMetadata::ONE_TO_MANY || $relation['type'] == ClassMetadata::MANY_TO_MANY) {
+ throw QueryException::iterateWithFetchJoinNotAllowed($assoc);
+ }
+ }
+
+ // This condition is not checking ClassMetadata::MANY_TO_ONE, because by definition it cannot
+ // be the owning side and previously we ensured that $assoc is always the owning side of the associations.
+ // The owning side is necessary at this point because only it contains the JoinColumn information.
+ switch (true) {
+ case ($assoc['type'] & ClassMetadata::TO_ONE):
+ $conditions = array();
+
+ foreach ($assoc['joinColumns'] as $joinColumn) {
+ $quotedSourceColumn = $this->quoteStrategy->getJoinColumnName($joinColumn, $targetClass, $this->platform);
+ $quotedTargetColumn = $this->quoteStrategy->getReferencedJoinColumnName($joinColumn, $targetClass, $this->platform);
+
+ if ($relation['isOwningSide']) {
+ $conditions[] = $sourceTableAlias . '.' . $quotedSourceColumn . ' = ' . $targetTableAlias . '.' . $quotedTargetColumn;
+
+ continue;
+ }
+
+ $conditions[] = $sourceTableAlias . '.' . $quotedTargetColumn . ' = ' . $targetTableAlias . '.' . $quotedSourceColumn;
+ }
+
+ // Apply remaining inheritance restrictions
+ $discrSql = $this->_generateDiscriminatorColumnConditionSQL(array($joinedDqlAlias));
+
+ if ($discrSql) {
+ $conditions[] = $discrSql;
+ }
+
+ // Apply the filters
+ $filterExpr = $this->generateFilterConditionSQL($targetClass, $targetTableAlias);
+
+ if ($filterExpr) {
+ $conditions[] = $filterExpr;
+ }
+
+ $sql .= $targetTableName . ' ' . $targetTableAlias . ' ON ' . implode(' AND ', $conditions);
+ break;
+
+ case ($assoc['type'] == ClassMetadata::MANY_TO_MANY):
+ // Join relation table
+ $joinTable = $assoc['joinTable'];
+ $joinTableAlias = $this->getSQLTableAlias($joinTable['name'], $joinedDqlAlias);
+ $joinTableName = $sourceClass->getQuotedJoinTableName($assoc, $this->platform);
+
+ $conditions = array();
+ $relationColumns = ($relation['isOwningSide'])
+ ? $assoc['joinTable']['joinColumns']
+ : $assoc['joinTable']['inverseJoinColumns'];
+
+ foreach ($relationColumns as $joinColumn) {
+ $quotedSourceColumn = $this->quoteStrategy->getJoinColumnName($joinColumn, $targetClass, $this->platform);
+ $quotedTargetColumn = $this->quoteStrategy->getReferencedJoinColumnName($joinColumn, $targetClass, $this->platform);
+
+ $conditions[] = $sourceTableAlias . '.' . $quotedTargetColumn . ' = ' . $joinTableAlias . '.' . $quotedSourceColumn;
+ }
+
+ $sql .= $joinTableName . ' ' . $joinTableAlias . ' ON ' . implode(' AND ', $conditions);
+
+ // Join target table
+ $sql .= ($joinType == AST\Join::JOIN_TYPE_LEFT || $joinType == AST\Join::JOIN_TYPE_LEFTOUTER) ? ' LEFT JOIN ' : ' INNER JOIN ';
+
+ $conditions = array();
+ $relationColumns = ($relation['isOwningSide'])
+ ? $assoc['joinTable']['inverseJoinColumns']
+ : $assoc['joinTable']['joinColumns'];
+
+ foreach ($relationColumns as $joinColumn) {
+ $quotedSourceColumn = $this->quoteStrategy->getJoinColumnName($joinColumn, $targetClass, $this->platform);
+ $quotedTargetColumn = $this->quoteStrategy->getReferencedJoinColumnName($joinColumn, $targetClass, $this->platform);
+
+ $conditions[] = $targetTableAlias . '.' . $quotedTargetColumn . ' = ' . $joinTableAlias . '.' . $quotedSourceColumn;
+ }
+
+ // Apply remaining inheritance restrictions
+ $discrSql = $this->_generateDiscriminatorColumnConditionSQL(array($joinedDqlAlias));
+
+ if ($discrSql) {
+ $conditions[] = $discrSql;
+ }
+
+ // Apply the filters
+ $filterExpr = $this->generateFilterConditionSQL($targetClass, $targetTableAlias);
+
+ if ($filterExpr) {
+ $conditions[] = $filterExpr;
+ }
+
+ $sql .= $targetTableName . ' ' . $targetTableAlias . ' ON ' . implode(' AND ', $conditions);
+ break;
+ }
+
+ // FIXME: these should either be nested or all forced to be left joins (DDC-XXX)
+ if ($targetClass->isInheritanceTypeJoined()) {
+ $sql .= $this->_generateClassTableInheritanceJoins($targetClass, $joinedDqlAlias);
+ }
+
+ // Apply the indexes
+ if ($indexBy) {
+ // For Many-To-One or One-To-One associations this obviously makes no sense, but is ignored silently.
+ $this->rsm->addIndexBy(
+ $indexBy->simpleStateFieldPathExpression->identificationVariable,
+ $indexBy->simpleStateFieldPathExpression->field
+ );
+ } else if (isset($relation['indexBy'])) {
+ $this->rsm->addIndexBy($joinedDqlAlias, $relation['indexBy']);
+ }
+
+ return $sql;
+ }
+
+ /**
+ * Walks down a FunctionNode AST node, thereby generating the appropriate SQL.
+ *
+ * @return string The SQL.
+ */
+ public function walkFunction($function)
+ {
+ return $function->getSql($this);
+ }
+
+ /**
+ * Walks down an OrderByClause AST node, thereby generating the appropriate SQL.
+ *
+ * @param OrderByClause
+ * @return string The SQL.
+ */
+ public function walkOrderByClause($orderByClause)
+ {
+ $orderByItems = array_map(array($this, 'walkOrderByItem'), $orderByClause->orderByItems);
+
+ if (($collectionOrderByItems = $this->_generateOrderedCollectionOrderByItems()) !== '') {
+ $orderByItems = array_merge($orderByItems, (array) $collectionOrderByItems);
+ }
+
+ return ' ORDER BY ' . implode(', ', $orderByItems);
+ }
+
+ /**
+ * Walks down an OrderByItem AST node, thereby generating the appropriate SQL.
+ *
+ * @param OrderByItem
+ * @return string The SQL.
+ */
+ public function walkOrderByItem($orderByItem)
+ {
+ $expr = $orderByItem->expression;
+ $sql = ($expr instanceof AST\Node)
+ ? $expr->dispatch($this)
+ : $this->walkResultVariable($this->queryComponents[$expr]['token']['value']);
+
+ return $sql . ' ' . strtoupper($orderByItem->type);
+ }
+
+ /**
+ * Walks down a HavingClause AST node, thereby generating the appropriate SQL.
+ *
+ * @param HavingClause
+ * @return string The SQL.
+ */
+ public function walkHavingClause($havingClause)
+ {
+ return ' HAVING ' . $this->walkConditionalExpression($havingClause->conditionalExpression);
+ }
+
+ /**
+ * Walks down a Join AST node and creates the corresponding SQL.
+ *
+ * @return string The SQL.
+ */
+ public function walkJoin($join)
+ {
+ $joinType = $join->joinType;
+ $joinDeclaration = $join->joinAssociationDeclaration;
+
+ $sql = ($joinType == AST\Join::JOIN_TYPE_LEFT || $joinType == AST\Join::JOIN_TYPE_LEFTOUTER)
+ ? ' LEFT JOIN '
+ : ' INNER JOIN ';
+
+ switch (true) {
+ case ($joinDeclaration instanceof \Doctrine\ORM\Query\AST\RangeVariableDeclaration):
+ $class = $this->em->getClassMetadata($joinDeclaration->abstractSchemaName);
+ $condExprConjunction = $class->isInheritanceTypeJoined() && $joinType != AST\Join::JOIN_TYPE_LEFT && $joinType != AST\Join::JOIN_TYPE_LEFTOUTER
+ ? ' AND '
+ : ' ON ';
+
+ $sql .= $this->walkRangeVariableDeclaration($joinDeclaration)
+ . $condExprConjunction . '(' . $this->walkConditionalExpression($join->conditionalExpression) . ')';
+ break;
+
+ case ($joinDeclaration instanceof \Doctrine\ORM\Query\AST\JoinAssociationDeclaration):
+ $sql .= $this->walkJoinAssociationDeclaration($joinDeclaration, $joinType);
+
+ // Handle WITH clause
+ if (($condExpr = $join->conditionalExpression) !== null) {
+ // Phase 2 AST optimization: Skip processment of ConditionalExpression
+ // if only one ConditionalTerm is defined
+ $sql .= ' AND (' . $this->walkConditionalExpression($condExpr) . ')';
+ }
+ break;
+ }
+
+ return $sql;
+ }
+
+ /**
+ * Walks down a CaseExpression AST node and generates the corresponding SQL.
+ *
+ * @param CoalesceExpression|NullIfExpression|GeneralCaseExpression|SimpleCaseExpression $expression
+ * @return string The SQL.
+ */
+ public function walkCaseExpression($expression)
+ {
+ switch (true) {
+ case ($expression instanceof AST\CoalesceExpression):
+ return $this->walkCoalesceExpression($expression);
+
+ case ($expression instanceof AST\NullIfExpression):
+ return $this->walkNullIfExpression($expression);
+
+ case ($expression instanceof AST\GeneralCaseExpression):
+ return $this->walkGeneralCaseExpression($expression);
+
+ case ($expression instanceof AST\SimpleCaseExpression):
+ return $this->walkSimpleCaseExpression($expression);
+
+ default:
+ return '';
+ }
+ }
+
+ /**
+ * Walks down a CoalesceExpression AST node and generates the corresponding SQL.
+ *
+ * @param CoalesceExpression $coalesceExpression
+ * @return string The SQL.
+ */
+ public function walkCoalesceExpression($coalesceExpression)
+ {
+ $sql = 'COALESCE(';
+
+ $scalarExpressions = array();
+
+ foreach ($coalesceExpression->scalarExpressions as $scalarExpression) {
+ $scalarExpressions[] = $this->walkSimpleArithmeticExpression($scalarExpression);
+ }
+
+ $sql .= implode(', ', $scalarExpressions) . ')';
+
+ return $sql;
+ }
+
+ /**
+ * Walks down a NullIfExpression AST node and generates the corresponding SQL.
+ *
+ * @param NullIfExpression $nullIfExpression
+ * @return string The SQL.
+ */
+ public function walkNullIfExpression($nullIfExpression)
+ {
+ $firstExpression = is_string($nullIfExpression->firstExpression)
+ ? $this->conn->quote($nullIfExpression->firstExpression)
+ : $this->walkSimpleArithmeticExpression($nullIfExpression->firstExpression);
+
+ $secondExpression = is_string($nullIfExpression->secondExpression)
+ ? $this->conn->quote($nullIfExpression->secondExpression)
+ : $this->walkSimpleArithmeticExpression($nullIfExpression->secondExpression);
+
+ return 'NULLIF(' . $firstExpression . ', ' . $secondExpression . ')';
+ }
+
+ /**
+ * Walks down a GeneralCaseExpression AST node and generates the corresponding SQL.
+ *
+ * @param GeneralCaseExpression $generalCaseExpression
+ * @return string The SQL.
+ */
+ public function walkGeneralCaseExpression(AST\GeneralCaseExpression $generalCaseExpression)
+ {
+ $sql = 'CASE';
+
+ foreach ($generalCaseExpression->whenClauses as $whenClause) {
+ $sql .= ' WHEN ' . $this->walkConditionalExpression($whenClause->caseConditionExpression);
+ $sql .= ' THEN ' . $this->walkSimpleArithmeticExpression($whenClause->thenScalarExpression);
+ }
+
+ $sql .= ' ELSE ' . $this->walkSimpleArithmeticExpression($generalCaseExpression->elseScalarExpression) . ' END';
+
+ return $sql;
+ }
+
+ /**
+ * Walks down a SimpleCaseExpression AST node and generates the corresponding SQL.
+ *
+ * @param SimpleCaseExpression $simpleCaseExpression
+ * @return string The SQL.
+ */
+ public function walkSimpleCaseExpression($simpleCaseExpression)
+ {
+ $sql = 'CASE ' . $this->walkStateFieldPathExpression($simpleCaseExpression->caseOperand);
+
+ foreach ($simpleCaseExpression->simpleWhenClauses as $simpleWhenClause) {
+ $sql .= ' WHEN ' . $this->walkSimpleArithmeticExpression($simpleWhenClause->caseScalarExpression);
+ $sql .= ' THEN ' . $this->walkSimpleArithmeticExpression($simpleWhenClause->thenScalarExpression);
+ }
+
+ $sql .= ' ELSE ' . $this->walkSimpleArithmeticExpression($simpleCaseExpression->elseScalarExpression) . ' END';
+
+ return $sql;
+ }
+
+ /**
+ * Walks down a SelectExpression AST node and generates the corresponding SQL.
+ *
+ * @param SelectExpression $selectExpression
+ * @return string The SQL.
+ */
+ public function walkSelectExpression($selectExpression)
+ {
+ $sql = '';
+ $expr = $selectExpression->expression;
+ $hidden = $selectExpression->hiddenAliasResultVariable;
+
+ switch (true) {
+ case ($expr instanceof AST\PathExpression):
+ if ($expr->type !== AST\PathExpression::TYPE_STATE_FIELD) {
+ throw QueryException::invalidPathExpression($expr);
+ }
+
+ $fieldName = $expr->field;
+ $dqlAlias = $expr->identificationVariable;
+ $qComp = $this->queryComponents[$dqlAlias];
+ $class = $qComp['metadata'];
+
+ $resultAlias = $selectExpression->fieldIdentificationVariable ?: $fieldName;
+ $tableName = ($class->isInheritanceTypeJoined())
+ ? $this->em->getUnitOfWork()->getEntityPersister($class->name)->getOwningTable($fieldName)
+ : $class->getTableName();
+
+ $sqlTableAlias = $this->getSQLTableAlias($tableName, $dqlAlias);
+ $columnName = $this->quoteStrategy->getColumnName($fieldName, $class, $this->platform);
+ $columnAlias = $this->getSQLColumnAlias($class->fieldMappings[$fieldName]['columnName']);
+
+ $col = $sqlTableAlias . '.' . $columnName;
+
+ $fieldType = $class->getTypeOfField($fieldName);
+
+ if (isset($class->fieldMappings[$fieldName]['requireSQLConversion'])) {
+ $type = Type::getType($fieldType);
+ $col = $type->convertToPHPValueSQL($col, $this->conn->getDatabasePlatform());
+ }
+
+ $sql .= $col . ' AS ' . $columnAlias;
+
+ $this->scalarResultAliasMap[$resultAlias] = $columnAlias;
+
+ if ( ! $hidden) {
+ $this->rsm->addScalarResult($columnAlias, $resultAlias, $fieldType);
+ $this->scalarFields[$dqlAlias][$fieldName] = $columnAlias;
+ }
+ break;
+
+ case ($expr instanceof AST\AggregateExpression):
+ case ($expr instanceof AST\Functions\FunctionNode):
+ case ($expr instanceof AST\SimpleArithmeticExpression):
+ case ($expr instanceof AST\ArithmeticTerm):
+ case ($expr instanceof AST\ArithmeticFactor):
+ case ($expr instanceof AST\Literal):
+ case ($expr instanceof AST\NullIfExpression):
+ case ($expr instanceof AST\CoalesceExpression):
+ case ($expr instanceof AST\GeneralCaseExpression):
+ case ($expr instanceof AST\SimpleCaseExpression):
+ $columnAlias = $this->getSQLColumnAlias('sclr');
+ $resultAlias = $selectExpression->fieldIdentificationVariable ?: $this->scalarResultCounter++;
+
+ $sql .= $expr->dispatch($this) . ' AS ' . $columnAlias;
+
+ $this->scalarResultAliasMap[$resultAlias] = $columnAlias;
+
+ if ( ! $hidden) {
+ // We cannot resolve field type here; assume 'string'.
+ $this->rsm->addScalarResult($columnAlias, $resultAlias, 'string');
+ }
+ break;
+
+ case ($expr instanceof AST\Subselect):
+ $columnAlias = $this->getSQLColumnAlias('sclr');
+ $resultAlias = $selectExpression->fieldIdentificationVariable ?: $this->scalarResultCounter++;
+
+ $sql .= '(' . $this->walkSubselect($expr) . ') AS ' . $columnAlias;
+
+ $this->scalarResultAliasMap[$resultAlias] = $columnAlias;
+
+ if ( ! $hidden) {
+ // We cannot resolve field type here; assume 'string'.
+ $this->rsm->addScalarResult($columnAlias, $resultAlias, 'string');
+ }
+ break;
+
+ default:
+ // IdentificationVariable or PartialObjectExpression
+ if ($expr instanceof AST\PartialObjectExpression) {
+ $dqlAlias = $expr->identificationVariable;
+ $partialFieldSet = $expr->partialFieldSet;
+ } else {
+ $dqlAlias = $expr;
+ $partialFieldSet = array();
+ }
+
+ $queryComp = $this->queryComponents[$dqlAlias];
+ $class = $queryComp['metadata'];
+ $resultAlias = $selectExpression->fieldIdentificationVariable ?: null;
+
+ if ( ! isset($this->selectedClasses[$dqlAlias])) {
+ $this->selectedClasses[$dqlAlias] = array(
+ 'class' => $class,
+ 'dqlAlias' => $dqlAlias,
+ 'resultAlias' => $resultAlias
+ );
+ }
+
+ $sqlParts = array();
+
+ // Select all fields from the queried class
+ foreach ($class->fieldMappings as $fieldName => $mapping) {
+ if ($partialFieldSet && ! in_array($fieldName, $partialFieldSet)) {
+ continue;
+ }
+
+ $tableName = (isset($mapping['inherited']))
+ ? $this->em->getClassMetadata($mapping['inherited'])->getTableName()
+ : $class->getTableName();
+
+ $sqlTableAlias = $this->getSQLTableAlias($tableName, $dqlAlias);
+ $columnAlias = $this->getSQLColumnAlias($mapping['columnName']);
+ $quotedColumnName = $this->quoteStrategy->getColumnName($fieldName, $class, $this->platform);
+
+ $col = $sqlTableAlias . '.' . $quotedColumnName;
+
+ if (isset($class->fieldMappings[$fieldName]['requireSQLConversion'])) {
+ $type = Type::getType($class->getTypeOfField($fieldName));
+ $col = $type->convertToPHPValueSQL($col, $this->platform);
+ }
+
+ $sqlParts[] = $col . ' AS '. $columnAlias;
+
+ $this->scalarResultAliasMap[$resultAlias][] = $columnAlias;
+
+ $this->rsm->addFieldResult($dqlAlias, $columnAlias, $fieldName, $class->name);
+ }
+
+ // Add any additional fields of subclasses (excluding inherited fields)
+ // 1) on Single Table Inheritance: always, since its marginal overhead
+ // 2) on Class Table Inheritance only if partial objects are disallowed,
+ // since it requires outer joining subtables.
+ if ($class->isInheritanceTypeSingleTable() || ! $this->query->getHint(Query::HINT_FORCE_PARTIAL_LOAD)) {
+ foreach ($class->subClasses as $subClassName) {
+ $subClass = $this->em->getClassMetadata($subClassName);
+ $sqlTableAlias = $this->getSQLTableAlias($subClass->getTableName(), $dqlAlias);
+
+ foreach ($subClass->fieldMappings as $fieldName => $mapping) {
+ if (isset($mapping['inherited']) || $partialFieldSet && !in_array($fieldName, $partialFieldSet)) {
+ continue;
+ }
+
+ $columnAlias = $this->getSQLColumnAlias($mapping['columnName']);
+ $quotedColumnName = $this->quoteStrategy->getColumnName($fieldName, $subClass, $this->platform);
+
+ $col = $sqlTableAlias . '.' . $quotedColumnName;
+
+ if (isset($subClass->fieldMappings[$fieldName]['requireSQLConversion'])) {
+ $type = Type::getType($subClass->getTypeOfField($fieldName));
+ $col = $type->convertToPHPValueSQL($col, $this->platform);
+ }
+
+ $sqlParts[] = $col . ' AS ' . $columnAlias;
+
+ $this->scalarResultAliasMap[$resultAlias][] = $columnAlias;
+
+ $this->rsm->addFieldResult($dqlAlias, $columnAlias, $fieldName, $subClassName);
+ }
+ }
+ }
+
+ $sql .= implode(', ', $sqlParts);
+ }
+
+ return $sql;
+ }
+
+ /**
+ * Walks down a QuantifiedExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param QuantifiedExpression
+ * @return string The SQL.
+ */
+ public function walkQuantifiedExpression($qExpr)
+ {
+ return ' ' . strtoupper($qExpr->type) . '(' . $this->walkSubselect($qExpr->subselect) . ')';
+ }
+
+ /**
+ * Walks down a Subselect AST node, thereby generating the appropriate SQL.
+ *
+ * @param Subselect
+ * @return string The SQL.
+ */
+ public function walkSubselect($subselect)
+ {
+ $useAliasesBefore = $this->useSqlTableAliases;
+ $rootAliasesBefore = $this->rootAliases;
+
+ $this->rootAliases = array(); // reset the rootAliases for the subselect
+ $this->useSqlTableAliases = true;
+
+ $sql = $this->walkSimpleSelectClause($subselect->simpleSelectClause);
+ $sql .= $this->walkSubselectFromClause($subselect->subselectFromClause);
+ $sql .= $this->walkWhereClause($subselect->whereClause);
+
+ $sql .= $subselect->groupByClause ? $this->walkGroupByClause($subselect->groupByClause) : '';
+ $sql .= $subselect->havingClause ? $this->walkHavingClause($subselect->havingClause) : '';
+ $sql .= $subselect->orderByClause ? $this->walkOrderByClause($subselect->orderByClause) : '';
+
+ $this->rootAliases = $rootAliasesBefore; // put the main aliases back
+ $this->useSqlTableAliases = $useAliasesBefore;
+
+ return $sql;
+ }
+
+ /**
+ * Walks down a SubselectFromClause AST node, thereby generating the appropriate SQL.
+ *
+ * @param SubselectFromClause
+ * @return string The SQL.
+ */
+ public function walkSubselectFromClause($subselectFromClause)
+ {
+ $identificationVarDecls = $subselectFromClause->identificationVariableDeclarations;
+ $sqlParts = array ();
+
+ foreach ($identificationVarDecls as $subselectIdVarDecl) {
+ $sql = $this->platform->appendLockHint(
+ $this->walkRangeVariableDeclaration($subselectIdVarDecl->rangeVariableDeclaration),
+ $this->query->getHint(Query::HINT_LOCK_MODE)
+ );
+
+ foreach ($subselectIdVarDecl->joins as $join) {
+ $sql .= $this->walkJoin($join);
+ }
+
+ $sqlParts[] = $sql;
+ }
+
+ return ' FROM ' . implode(', ', $sqlParts);
+ }
+
+ /**
+ * Walks down a SimpleSelectClause AST node, thereby generating the appropriate SQL.
+ *
+ * @param SimpleSelectClause
+ * @return string The SQL.
+ */
+ public function walkSimpleSelectClause($simpleSelectClause)
+ {
+ return 'SELECT' . ($simpleSelectClause->isDistinct ? ' DISTINCT' : '')
+ . $this->walkSimpleSelectExpression($simpleSelectClause->simpleSelectExpression);
+ }
+
+ /**
+ * Walks down a SimpleSelectExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param SimpleSelectExpression
+ * @return string The SQL.
+ */
+ public function walkSimpleSelectExpression($simpleSelectExpression)
+ {
+ $expr = $simpleSelectExpression->expression;
+ $sql = ' ';
+
+ switch (true) {
+ case ($expr instanceof AST\PathExpression):
+ $sql .= $this->walkPathExpression($expr);
+ break;
+
+ case ($expr instanceof AST\AggregateExpression):
+ $alias = $simpleSelectExpression->fieldIdentificationVariable ?: $this->scalarResultCounter++;
+
+ $sql .= $this->walkAggregateExpression($expr) . ' AS dctrn__' . $alias;
+ break;
+
+ case ($expr instanceof AST\Subselect):
+ $alias = $simpleSelectExpression->fieldIdentificationVariable ?: $this->scalarResultCounter++;
+
+ $columnAlias = 'sclr' . $this->aliasCounter++;
+ $this->scalarResultAliasMap[$alias] = $columnAlias;
+
+ $sql .= '(' . $this->walkSubselect($expr) . ') AS ' . $columnAlias;
+ break;
+
+ case ($expr instanceof AST\Functions\FunctionNode):
+ case ($expr instanceof AST\SimpleArithmeticExpression):
+ case ($expr instanceof AST\ArithmeticTerm):
+ case ($expr instanceof AST\ArithmeticFactor):
+ case ($expr instanceof AST\Literal):
+ case ($expr instanceof AST\NullIfExpression):
+ case ($expr instanceof AST\CoalesceExpression):
+ case ($expr instanceof AST\GeneralCaseExpression):
+ case ($expr instanceof AST\SimpleCaseExpression):
+ $alias = $simpleSelectExpression->fieldIdentificationVariable ?: $this->scalarResultCounter++;
+
+ $columnAlias = $this->getSQLColumnAlias('sclr');
+ $this->scalarResultAliasMap[$alias] = $columnAlias;
+
+ $sql .= $expr->dispatch($this) . ' AS ' . $columnAlias;
+ break;
+
+ default: // IdentificationVariable
+ $sql .= $this->walkEntityIdentificationVariable($expr);
+ break;
+ }
+
+ return $sql;
+ }
+
+ /**
+ * Walks down an AggregateExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param AggregateExpression
+ * @return string The SQL.
+ */
+ public function walkAggregateExpression($aggExpression)
+ {
+ return $aggExpression->functionName . '(' . ($aggExpression->isDistinct ? 'DISTINCT ' : '')
+ . $this->walkSimpleArithmeticExpression($aggExpression->pathExpression) . ')';
+ }
+
+ /**
+ * Walks down a GroupByClause AST node, thereby generating the appropriate SQL.
+ *
+ * @param GroupByClause
+ * @return string The SQL.
+ */
+ public function walkGroupByClause($groupByClause)
+ {
+ $sqlParts = array();
+
+ foreach ($groupByClause->groupByItems as $groupByItem) {
+ $sqlParts[] = $this->walkGroupByItem($groupByItem);
+ }
+
+ return ' GROUP BY ' . implode(', ', $sqlParts);
+ }
+
+ /**
+ * Walks down a GroupByItem AST node, thereby generating the appropriate SQL.
+ *
+ * @param GroupByItem
+ * @return string The SQL.
+ */
+ public function walkGroupByItem($groupByItem)
+ {
+ // StateFieldPathExpression
+ if ( ! is_string($groupByItem)) {
+ return $this->walkPathExpression($groupByItem);
+ }
+
+ // ResultVariable
+ if (isset($this->queryComponents[$groupByItem]['resultVariable'])) {
+ return $this->walkResultVariable($groupByItem);
+ }
+
+ // IdentificationVariable
+ $sqlParts = array();
+
+ foreach ($this->queryComponents[$groupByItem]['metadata']->fieldNames as $field) {
+ $item = new AST\PathExpression(AST\PathExpression::TYPE_STATE_FIELD, $groupByItem, $field);
+ $item->type = AST\PathExpression::TYPE_STATE_FIELD;
+
+ $sqlParts[] = $this->walkPathExpression($item);
+ }
+
+ foreach ($this->queryComponents[$groupByItem]['metadata']->associationMappings as $mapping) {
+ if ($mapping['isOwningSide'] && $mapping['type'] & ClassMetadataInfo::TO_ONE) {
+ $item = new AST\PathExpression(AST\PathExpression::TYPE_SINGLE_VALUED_ASSOCIATION, $groupByItem, $mapping['fieldName']);
+ $item->type = AST\PathExpression::TYPE_SINGLE_VALUED_ASSOCIATION;
+
+ $sqlParts[] = $this->walkPathExpression($item);
+ }
+ }
+
+ return implode(', ', $sqlParts);
+ }
+
+ /**
+ * Walks down a DeleteClause AST node, thereby generating the appropriate SQL.
+ *
+ * @param DeleteClause
+ * @return string The SQL.
+ */
+ public function walkDeleteClause(AST\DeleteClause $deleteClause)
+ {
+ $class = $this->em->getClassMetadata($deleteClause->abstractSchemaName);
+ $tableName = $class->getTableName();
+ $sql = 'DELETE FROM ' . $this->quoteStrategy->getTableName($class, $this->platform);
+
+ $this->setSQLTableAlias($tableName, $tableName, $deleteClause->aliasIdentificationVariable);
+ $this->rootAliases[] = $deleteClause->aliasIdentificationVariable;
+
+ return $sql;
+ }
+
+ /**
+ * Walks down an UpdateClause AST node, thereby generating the appropriate SQL.
+ *
+ * @param UpdateClause
+ * @return string The SQL.
+ */
+ public function walkUpdateClause($updateClause)
+ {
+ $class = $this->em->getClassMetadata($updateClause->abstractSchemaName);
+ $tableName = $class->getTableName();
+ $sql = 'UPDATE ' . $this->quoteStrategy->getTableName($class, $this->platform);
+
+ $this->setSQLTableAlias($tableName, $tableName, $updateClause->aliasIdentificationVariable);
+ $this->rootAliases[] = $updateClause->aliasIdentificationVariable;
+
+ $sql .= ' SET ' . implode(', ', array_map(array($this, 'walkUpdateItem'), $updateClause->updateItems));
+
+ return $sql;
+ }
+
+ /**
+ * Walks down an UpdateItem AST node, thereby generating the appropriate SQL.
+ *
+ * @param UpdateItem
+ * @return string The SQL.
+ */
+ public function walkUpdateItem($updateItem)
+ {
+ $useTableAliasesBefore = $this->useSqlTableAliases;
+ $this->useSqlTableAliases = false;
+
+ $sql = $this->walkPathExpression($updateItem->pathExpression) . ' = ';
+ $newValue = $updateItem->newValue;
+
+ switch (true) {
+ case ($newValue instanceof AST\Node):
+ $sql .= $newValue->dispatch($this);
+ break;
+
+ case ($newValue === null):
+ $sql .= 'NULL';
+ break;
+
+ default:
+ $sql .= $this->conn->quote($newValue);
+ break;
+ }
+
+ $this->useSqlTableAliases = $useTableAliasesBefore;
+
+ return $sql;
+ }
+
+ /**
+ * Walks down a WhereClause AST node, thereby generating the appropriate SQL.
+ * WhereClause or not, the appropriate discriminator sql is added.
+ *
+ * @param WhereClause
+ * @return string The SQL.
+ */
+ public function walkWhereClause($whereClause)
+ {
+ $condSql = null !== $whereClause ? $this->walkConditionalExpression($whereClause->conditionalExpression) : '';
+ $discrSql = $this->_generateDiscriminatorColumnConditionSql($this->rootAliases);
+
+ if ($this->em->hasFilters()) {
+ $filterClauses = array();
+ foreach ($this->rootAliases as $dqlAlias) {
+ $class = $this->queryComponents[$dqlAlias]['metadata'];
+ $tableAlias = $this->getSQLTableAlias($class->table['name'], $dqlAlias);
+
+ if ($filterExpr = $this->generateFilterConditionSQL($class, $tableAlias)) {
+ $filterClauses[] = $filterExpr;
+ }
+ }
+
+ if (count($filterClauses)) {
+ if ($condSql) {
+ $condSql = '(' . $condSql . ') AND ';
+ }
+
+ $condSql .= implode(' AND ', $filterClauses);
+ }
+ }
+
+ if ($condSql) {
+ return ' WHERE ' . (( ! $discrSql) ? $condSql : '(' . $condSql . ') AND ' . $discrSql);
+ }
+
+ if ($discrSql) {
+ return ' WHERE ' . $discrSql;
+ }
+
+ return '';
+ }
+
+ /**
+ * Walk down a ConditionalExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param ConditionalExpression
+ * @return string The SQL.
+ */
+ public function walkConditionalExpression($condExpr)
+ {
+ // Phase 2 AST optimization: Skip processment of ConditionalExpression
+ // if only one ConditionalTerm is defined
+ if ( ! ($condExpr instanceof AST\ConditionalExpression)) {
+ return $this->walkConditionalTerm($condExpr);
+ }
+
+ return implode(' OR ', array_map(array($this, 'walkConditionalTerm'), $condExpr->conditionalTerms));
+ }
+
+ /**
+ * Walks down a ConditionalTerm AST node, thereby generating the appropriate SQL.
+ *
+ * @param ConditionalTerm
+ * @return string The SQL.
+ */
+ public function walkConditionalTerm($condTerm)
+ {
+ // Phase 2 AST optimization: Skip processment of ConditionalTerm
+ // if only one ConditionalFactor is defined
+ if ( ! ($condTerm instanceof AST\ConditionalTerm)) {
+ return $this->walkConditionalFactor($condTerm);
+ }
+
+ return implode(' AND ', array_map(array($this, 'walkConditionalFactor'), $condTerm->conditionalFactors));
+ }
+
+ /**
+ * Walks down a ConditionalFactor AST node, thereby generating the appropriate SQL.
+ *
+ * @param ConditionalFactor
+ * @return string The SQL.
+ */
+ public function walkConditionalFactor($factor)
+ {
+ // Phase 2 AST optimization: Skip processment of ConditionalFactor
+ // if only one ConditionalPrimary is defined
+ return ( ! ($factor instanceof AST\ConditionalFactor))
+ ? $this->walkConditionalPrimary($factor)
+ : ($factor->not ? 'NOT ' : '') . $this->walkConditionalPrimary($factor->conditionalPrimary);
+ }
+
+ /**
+ * Walks down a ConditionalPrimary AST node, thereby generating the appropriate SQL.
+ *
+ * @param ConditionalPrimary
+ * @return string The SQL.
+ */
+ public function walkConditionalPrimary($primary)
+ {
+ if ($primary->isSimpleConditionalExpression()) {
+ return $primary->simpleConditionalExpression->dispatch($this);
+ }
+
+ if ($primary->isConditionalExpression()) {
+ $condExpr = $primary->conditionalExpression;
+
+ return '(' . $this->walkConditionalExpression($condExpr) . ')';
+ }
+ }
+
+ /**
+ * Walks down an ExistsExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param ExistsExpression
+ * @return string The SQL.
+ */
+ public function walkExistsExpression($existsExpr)
+ {
+ $sql = ($existsExpr->not) ? 'NOT ' : '';
+
+ $sql .= 'EXISTS (' . $this->walkSubselect($existsExpr->subselect) . ')';
+
+ return $sql;
+ }
+
+ /**
+ * Walks down a CollectionMemberExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param CollectionMemberExpression
+ * @return string The SQL.
+ */
+ public function walkCollectionMemberExpression($collMemberExpr)
+ {
+ $sql = $collMemberExpr->not ? 'NOT ' : '';
+ $sql .= 'EXISTS (SELECT 1 FROM ';
+
+ $entityExpr = $collMemberExpr->entityExpression;
+ $collPathExpr = $collMemberExpr->collectionValuedPathExpression;
+
+ $fieldName = $collPathExpr->field;
+ $dqlAlias = $collPathExpr->identificationVariable;
+
+ $class = $this->queryComponents[$dqlAlias]['metadata'];
+
+ switch (true) {
+ // InputParameter
+ case ($entityExpr instanceof AST\InputParameter):
+ $dqlParamKey = $entityExpr->name;
+ $entitySql = '?';
+ break;
+
+ // SingleValuedAssociationPathExpression | IdentificationVariable
+ case ($entityExpr instanceof AST\PathExpression):
+ $entitySql = $this->walkPathExpression($entityExpr);
+ break;
+
+ default:
+ throw new \BadMethodCallException("Not implemented");
+ }
+
+ $assoc = $class->associationMappings[$fieldName];
+
+ if ($assoc['type'] == ClassMetadata::ONE_TO_MANY) {
+ $targetClass = $this->em->getClassMetadata($assoc['targetEntity']);
+ $targetTableAlias = $this->getSQLTableAlias($targetClass->getTableName());
+ $sourceTableAlias = $this->getSQLTableAlias($class->getTableName(), $dqlAlias);
+
+ $sql .= $this->quoteStrategy->getTableName($targetClass, $this->platform) . ' ' . $targetTableAlias . ' WHERE ';
+
+ $owningAssoc = $targetClass->associationMappings[$assoc['mappedBy']];
+ $sqlParts = array();
+
+ foreach ($owningAssoc['targetToSourceKeyColumns'] as $targetColumn => $sourceColumn) {
+ $targetColumn = $this->quoteStrategy->getColumnName($class->fieldNames[$targetColumn], $class, $this->platform);
+
+ $sqlParts[] = $sourceTableAlias . '.' . $targetColumn . ' = ' . $targetTableAlias . '.' . $sourceColumn;
+ }
+
+ foreach ($this->quoteStrategy->getIdentifierColumnNames($targetClass, $this->platform) as $targetColumnName) {
+ if (isset($dqlParamKey)) {
+ $this->parserResult->addParameterMapping($dqlParamKey, $this->sqlParamIndex++);
+ }
+
+ $sqlParts[] = $targetTableAlias . '.' . $targetColumnName . ' = ' . $entitySql;
+ }
+
+ $sql .= implode(' AND ', $sqlParts);
+ } else { // many-to-many
+ $targetClass = $this->em->getClassMetadata($assoc['targetEntity']);
+
+ $owningAssoc = $assoc['isOwningSide'] ? $assoc : $targetClass->associationMappings[$assoc['mappedBy']];
+ $joinTable = $owningAssoc['joinTable'];
+
+ // SQL table aliases
+ $joinTableAlias = $this->getSQLTableAlias($joinTable['name']);
+ $targetTableAlias = $this->getSQLTableAlias($targetClass->getTableName());
+ $sourceTableAlias = $this->getSQLTableAlias($class->getTableName(), $dqlAlias);
+
+ // join to target table
+ $sql .= $this->quoteStrategy->getJoinTableName($owningAssoc, $targetClass, $this->platform) . ' ' . $joinTableAlias
+ . ' INNER JOIN ' . $this->quoteStrategy->getTableName($targetClass, $this->platform) . ' ' . $targetTableAlias . ' ON ';
+
+ // join conditions
+ $joinColumns = $assoc['isOwningSide'] ? $joinTable['inverseJoinColumns'] : $joinTable['joinColumns'];
+ $joinSqlParts = array();
+
+ foreach ($joinColumns as $joinColumn) {
+ $targetColumn = $this->quoteStrategy->getColumnName($targetClass->fieldNames[$joinColumn['referencedColumnName']], $targetClass, $this->platform);
+
+ $joinSqlParts[] = $joinTableAlias . '.' . $joinColumn['name'] . ' = ' . $targetTableAlias . '.' . $targetColumn;
+ }
+
+ $sql .= implode(' AND ', $joinSqlParts);
+ $sql .= ' WHERE ';
+
+ $joinColumns = $assoc['isOwningSide'] ? $joinTable['joinColumns'] : $joinTable['inverseJoinColumns'];
+ $sqlParts = array();
+
+ foreach ($joinColumns as $joinColumn) {
+ $targetColumn = $this->quoteStrategy->getColumnName($class->fieldNames[$joinColumn['referencedColumnName']], $class, $this->platform);
+
+ $sqlParts[] = $joinTableAlias . '.' . $joinColumn['name'] . ' = ' . $sourceTableAlias . '.' . $targetColumn;
+ }
+
+ foreach ($this->quoteStrategy->getIdentifierColumnNames($targetClass, $this->platform) as $targetColumnName) {
+ if (isset($dqlParamKey)) {
+ $this->parserResult->addParameterMapping($dqlParamKey, $this->sqlParamIndex++);
+ }
+
+ $sqlParts[] = $targetTableAlias . '.' . $targetColumnName . ' = ' . $entitySql;
+ }
+
+ $sql .= implode(' AND ', $sqlParts);
+ }
+
+ return $sql . ')';
+ }
+
+ /**
+ * Walks down an EmptyCollectionComparisonExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param EmptyCollectionComparisonExpression
+ * @return string The SQL.
+ */
+ public function walkEmptyCollectionComparisonExpression($emptyCollCompExpr)
+ {
+ $sizeFunc = new AST\Functions\SizeFunction('size');
+ $sizeFunc->collectionPathExpression = $emptyCollCompExpr->expression;
+
+ return $sizeFunc->getSql($this) . ($emptyCollCompExpr->not ? ' > 0' : ' = 0');
+ }
+
+ /**
+ * Walks down a NullComparisonExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param NullComparisonExpression
+ * @return string The SQL.
+ */
+ public function walkNullComparisonExpression($nullCompExpr)
+ {
+ $sql = '';
+ $innerExpr = $nullCompExpr->expression;
+
+ if ($innerExpr instanceof AST\InputParameter) {
+ $dqlParamKey = $innerExpr->name;
+ $this->parserResult->addParameterMapping($dqlParamKey, $this->sqlParamIndex++);
+ $sql .= ' ?';
+ } else {
+ $sql .= $this->walkPathExpression($innerExpr);
+ }
+
+ $sql .= ' IS' . ($nullCompExpr->not ? ' NOT' : '') . ' NULL';
+
+ return $sql;
+ }
+
+ /**
+ * Walks down an InExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param InExpression
+ * @return string The SQL.
+ */
+ public function walkInExpression($inExpr)
+ {
+ $sql = $this->walkArithmeticExpression($inExpr->expression) . ($inExpr->not ? ' NOT' : '') . ' IN (';
+
+ $sql .= ($inExpr->subselect)
+ ? $this->walkSubselect($inExpr->subselect)
+ : implode(', ', array_map(array($this, 'walkInParameter'), $inExpr->literals));
+
+ $sql .= ')';
+
+ return $sql;
+ }
+
+ /**
+ * Walks down an InstanceOfExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param InstanceOfExpression
+ * @return string The SQL.
+ */
+ public function walkInstanceOfExpression($instanceOfExpr)
+ {
+ $sql = '';
+
+ $dqlAlias = $instanceOfExpr->identificationVariable;
+ $discrClass = $class = $this->queryComponents[$dqlAlias]['metadata'];
+
+ if ($class->discriminatorColumn) {
+ $discrClass = $this->em->getClassMetadata($class->rootEntityName);
+ }
+
+ if ($this->useSqlTableAliases) {
+ $sql .= $this->getSQLTableAlias($discrClass->getTableName(), $dqlAlias) . '.';
+ }
+
+ $sql .= $class->discriminatorColumn['name'] . ($instanceOfExpr->not ? ' NOT IN ' : ' IN ');
+
+ $sqlParameterList = array();
+
+ foreach ($instanceOfExpr->value as $parameter) {
+ if ($parameter instanceof AST\InputParameter) {
+ // We need to modify the parameter value to be its correspondent mapped value
+ $dqlParamKey = $parameter->name;
+ $dqlParam = $this->query->getParameter($dqlParamKey);
+ $paramValue = $this->query->processParameterValue($dqlParam->getValue());
+
+ if ( ! ($paramValue instanceof \Doctrine\ORM\Mapping\ClassMetadata)) {
+ throw QueryException::invalidParameterType('ClassMetadata', get_class($paramValue));
+ }
+
+ $entityClassName = $paramValue->name;
+ } else {
+ // Get name from ClassMetadata to resolve aliases.
+ $entityClassName = $this->em->getClassMetadata($parameter)->name;
+ }
+
+ if ($entityClassName == $class->name) {
+ $sqlParameterList[] = $this->conn->quote($class->discriminatorValue);
+ } else {
+ $discrMap = array_flip($class->discriminatorMap);
+
+ if (!isset($discrMap[$entityClassName])) {
+ throw QueryException::instanceOfUnrelatedClass($entityClassName, $class->rootEntityName);
+ }
+
+ $sqlParameterList[] = $this->conn->quote($discrMap[$entityClassName]);
+ }
+ }
+
+ $sql .= '(' . implode(', ', $sqlParameterList) . ')';
+
+ return $sql;
+ }
+
+ /**
+ * Walks down an InParameter AST node, thereby generating the appropriate SQL.
+ *
+ * @param InParameter
+ * @return string The SQL.
+ */
+ public function walkInParameter($inParam)
+ {
+ return $inParam instanceof AST\InputParameter
+ ? $this->walkInputParameter($inParam)
+ : $this->walkLiteral($inParam);
+ }
+
+ /**
+ * Walks down a literal that represents an AST node, thereby generating the appropriate SQL.
+ *
+ * @param mixed
+ * @return string The SQL.
+ */
+ public function walkLiteral($literal)
+ {
+ switch ($literal->type) {
+ case AST\Literal::STRING:
+ return $this->conn->quote($literal->value);
+
+ case AST\Literal::BOOLEAN:
+ $bool = strtolower($literal->value) == 'true' ? true : false;
+ $boolVal = $this->conn->getDatabasePlatform()->convertBooleans($bool);
+
+ return $boolVal;
+
+ case AST\Literal::NUMERIC:
+ return $literal->value;
+
+ default:
+ throw QueryException::invalidLiteral($literal);
+ }
+ }
+
+ /**
+ * Walks down a BetweenExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param BetweenExpression
+ * @return string The SQL.
+ */
+ public function walkBetweenExpression($betweenExpr)
+ {
+ $sql = $this->walkArithmeticExpression($betweenExpr->expression);
+
+ if ($betweenExpr->not) $sql .= ' NOT';
+
+ $sql .= ' BETWEEN ' . $this->walkArithmeticExpression($betweenExpr->leftBetweenExpression)
+ . ' AND ' . $this->walkArithmeticExpression($betweenExpr->rightBetweenExpression);
+
+ return $sql;
+ }
+
+ /**
+ * Walks down a LikeExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param LikeExpression
+ * @return string The SQL.
+ */
+ public function walkLikeExpression($likeExpr)
+ {
+ $stringExpr = $likeExpr->stringExpression;
+ $sql = $stringExpr->dispatch($this) . ($likeExpr->not ? ' NOT' : '') . ' LIKE ';
+
+ if ($likeExpr->stringPattern instanceof AST\InputParameter) {
+ $inputParam = $likeExpr->stringPattern;
+ $dqlParamKey = $inputParam->name;
+ $this->parserResult->addParameterMapping($dqlParamKey, $this->sqlParamIndex++);
+ $sql .= '?';
+ } elseif ($likeExpr->stringPattern instanceof AST\Functions\FunctionNode ) {
+ $sql .= $this->walkFunction($likeExpr->stringPattern);
+ } elseif ($likeExpr->stringPattern instanceof AST\PathExpression) {
+ $sql .= $this->walkPathExpression($likeExpr->stringPattern);
+ } else {
+ $sql .= $this->walkLiteral($likeExpr->stringPattern);
+ }
+
+ if ($likeExpr->escapeChar) {
+ $sql .= ' ESCAPE ' . $this->walkLiteral($likeExpr->escapeChar);
+ }
+
+ return $sql;
+ }
+
+ /**
+ * Walks down a StateFieldPathExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param StateFieldPathExpression
+ * @return string The SQL.
+ */
+ public function walkStateFieldPathExpression($stateFieldPathExpression)
+ {
+ return $this->walkPathExpression($stateFieldPathExpression);
+ }
+
+ /**
+ * Walks down a ComparisonExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param ComparisonExpression
+ * @return string The SQL.
+ */
+ public function walkComparisonExpression($compExpr)
+ {
+ $leftExpr = $compExpr->leftExpression;
+ $rightExpr = $compExpr->rightExpression;
+ $sql = '';
+
+ $sql .= ($leftExpr instanceof AST\Node)
+ ? $leftExpr->dispatch($this)
+ : (is_numeric($leftExpr) ? $leftExpr : $this->conn->quote($leftExpr));
+
+ $sql .= ' ' . $compExpr->operator . ' ';
+
+ $sql .= ($rightExpr instanceof AST\Node)
+ ? $rightExpr->dispatch($this)
+ : (is_numeric($rightExpr) ? $rightExpr : $this->conn->quote($rightExpr));
+
+ return $sql;
+ }
+
+ /**
+ * Walks down an InputParameter AST node, thereby generating the appropriate SQL.
+ *
+ * @param InputParameter
+ * @return string The SQL.
+ */
+ public function walkInputParameter($inputParam)
+ {
+ $this->parserResult->addParameterMapping($inputParam->name, $this->sqlParamIndex++);
+
+ return '?';
+ }
+
+ /**
+ * Walks down an ArithmeticExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param ArithmeticExpression
+ * @return string The SQL.
+ */
+ public function walkArithmeticExpression($arithmeticExpr)
+ {
+ return ($arithmeticExpr->isSimpleArithmeticExpression())
+ ? $this->walkSimpleArithmeticExpression($arithmeticExpr->simpleArithmeticExpression)
+ : '(' . $this->walkSubselect($arithmeticExpr->subselect) . ')';
+ }
+
+ /**
+ * Walks down an SimpleArithmeticExpression AST node, thereby generating the appropriate SQL.
+ *
+ * @param SimpleArithmeticExpression
+ * @return string The SQL.
+ */
+ public function walkSimpleArithmeticExpression($simpleArithmeticExpr)
+ {
+ if ( ! ($simpleArithmeticExpr instanceof AST\SimpleArithmeticExpression)) {
+ return $this->walkArithmeticTerm($simpleArithmeticExpr);
+ }
+
+ return implode(' ', array_map(array($this, 'walkArithmeticTerm'), $simpleArithmeticExpr->arithmeticTerms));
+ }
+
+ /**
+ * Walks down an ArithmeticTerm AST node, thereby generating the appropriate SQL.
+ *
+ * @param mixed
+ * @return string The SQL.
+ */
+ public function walkArithmeticTerm($term)
+ {
+ if (is_string($term)) {
+ return (isset($this->queryComponents[$term]))
+ ? $this->walkResultVariable($this->queryComponents[$term]['token']['value'])
+ : $term;
+ }
+
+ // Phase 2 AST optimization: Skip processment of ArithmeticTerm
+ // if only one ArithmeticFactor is defined
+ if ( ! ($term instanceof AST\ArithmeticTerm)) {
+ return $this->walkArithmeticFactor($term);
+ }
+
+ return implode(' ', array_map(array($this, 'walkArithmeticFactor'), $term->arithmeticFactors));
+ }
+
+ /**
+ * Walks down an ArithmeticFactor that represents an AST node, thereby generating the appropriate SQL.
+ *
+ * @param mixed
+ * @return string The SQL.
+ */
+ public function walkArithmeticFactor($factor)
+ {
+ if (is_string($factor)) {
+ return $factor;
+ }
+
+ // Phase 2 AST optimization: Skip processment of ArithmeticFactor
+ // if only one ArithmeticPrimary is defined
+ if ( ! ($factor instanceof AST\ArithmeticFactor)) {
+ return $this->walkArithmeticPrimary($factor);
+ }
+
+ $sign = $factor->isNegativeSigned() ? '-' : ($factor->isPositiveSigned() ? '+' : '');
+
+ return $sign . $this->walkArithmeticPrimary($factor->arithmeticPrimary);
+ }
+
+ /**
+ * Walks down an ArithmeticPrimary that represents an AST node, thereby generating the appropriate SQL.
+ *
+ * @param mixed
+ * @return string The SQL.
+ */
+ public function walkArithmeticPrimary($primary)
+ {
+ if ($primary instanceof AST\SimpleArithmeticExpression) {
+ return '(' . $this->walkSimpleArithmeticExpression($primary) . ')';
+ }
+
+ if ($primary instanceof AST\Node) {
+ return $primary->dispatch($this);
+ }
+
+ return $this->walkEntityIdentificationVariable($primary);
+ }
+
+ /**
+ * Walks down a StringPrimary that represents an AST node, thereby generating the appropriate SQL.
+ *
+ * @param mixed
+ * @return string The SQL.
+ */
+ public function walkStringPrimary($stringPrimary)
+ {
+ return (is_string($stringPrimary))
+ ? $this->conn->quote($stringPrimary)
+ : $stringPrimary->dispatch($this);
+ }
+
+ /**
+ * Walks down a ResultVriable that represents an AST node, thereby generating the appropriate SQL.
+ *
+ * @param string $resultVariable
+ * @return string The SQL.
+ */
+ public function walkResultVariable($resultVariable)
+ {
+ $resultAlias = $this->scalarResultAliasMap[$resultVariable];
+
+ if (is_array($resultAlias)) {
+ return implode(', ', $resultAlias);
+ }
+
+ return $resultAlias;
+ }
+}
\ No newline at end of file
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