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doctrine2/lib/Doctrine/ORM/Persisters/JoinedSubclassPersister.php
2012-12-03 10:15:43 +00:00

556 lines
20 KiB
PHP

<?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\Persisters;
use Doctrine\ORM\Mapping\ClassMetadata;
use Doctrine\ORM\Query\ResultSetMapping;
use Doctrine\DBAL\LockMode;
use Doctrine\DBAL\Types\Type;
use Doctrine\Common\Collections\Criteria;
/**
* The joined subclass persister maps a single entity instance to several tables in the
* database as it is defined by the <tt>Class Table Inheritance</tt> strategy.
*
* @author Roman Borschel <roman@code-factory.org>
* @author Benjamin Eberlei <kontakt@beberlei.de>
* @author Alexander <iam.asm89@gmail.com>
* @since 2.0
* @see http://martinfowler.com/eaaCatalog/classTableInheritance.html
*/
class JoinedSubclassPersister extends AbstractEntityInheritancePersister
{
/**
* Map that maps column names to the table names that own them.
* This is mainly a temporary cache, used during a single request.
*
* @var array
*/
private $owningTableMap = array();
/**
* Map of table to quoted table names.
*
* @var array
*/
private $quotedTableMap = array();
/**
* {@inheritdoc}
*/
protected function getDiscriminatorColumnTableName()
{
$class = ($this->class->name !== $this->class->rootEntityName)
? $this->em->getClassMetadata($this->class->rootEntityName)
: $this->class;
return $class->getTableName();
}
/**
* This function finds the ClassMetadata instance in an inheritance hierarchy
* that is responsible for enabling versioning.
*
* @return \Doctrine\ORM\Mapping\ClassMetadata
*/
private function getVersionedClassMetadata()
{
if (isset($this->class->fieldMappings[$this->class->versionField]['inherited'])) {
$definingClassName = $this->class->fieldMappings[$this->class->versionField]['inherited'];
return $this->em->getClassMetadata($definingClassName);
}
return $this->class;
}
/**
* Gets the name of the table that owns the column the given field is mapped to.
*
* @param string $fieldName
*
* @return string
*
* @override
*/
public function getOwningTable($fieldName)
{
if (isset($this->owningTableMap[$fieldName])) {
return $this->owningTableMap[$fieldName];
}
switch (true) {
case isset($this->class->associationMappings[$fieldName]['inherited']):
$cm = $this->em->getClassMetadata($this->class->associationMappings[$fieldName]['inherited']);
break;
case isset($this->class->fieldMappings[$fieldName]['inherited']):
$cm = $this->em->getClassMetadata($this->class->fieldMappings[$fieldName]['inherited']);
break;
default:
$cm = $this->class;
break;
}
$tableName = $cm->getTableName();
$quotedTableName = $this->quoteStrategy->getTableName($cm, $this->platform);
$this->owningTableMap[$fieldName] = $tableName;
$this->quotedTableMap[$tableName] = $quotedTableName;
return $tableName;
}
/**
* {@inheritdoc}
*/
public function executeInserts()
{
if ( ! $this->queuedInserts) {
return;
}
$postInsertIds = array();
$idGenerator = $this->class->idGenerator;
$isPostInsertId = $idGenerator->isPostInsertGenerator();
$rootClass = ($this->class->name !== $this->class->rootEntityName)
? $this->em->getClassMetadata($this->class->rootEntityName)
: $this->class;
// Prepare statement for the root table
$rootPersister = $this->em->getUnitOfWork()->getEntityPersister($rootClass->name);
$rootTableName = $rootClass->getTableName();
$rootTableStmt = $this->conn->prepare($rootPersister->getInsertSQL());
// Prepare statements for sub tables.
$subTableStmts = array();
if ($rootClass !== $this->class) {
$subTableStmts[$this->class->getTableName()] = $this->conn->prepare($this->getInsertSQL());
}
foreach ($this->class->parentClasses as $parentClassName) {
$parentClass = $this->em->getClassMetadata($parentClassName);
$parentTableName = $parentClass->getTableName();
if ($parentClass !== $rootClass) {
$parentPersister = $this->em->getUnitOfWork()->getEntityPersister($parentClassName);
$subTableStmts[$parentTableName] = $this->conn->prepare($parentPersister->getInsertSQL());
}
}
// Execute all inserts. For each entity:
// 1) Insert on root table
// 2) Insert on sub tables
foreach ($this->queuedInserts as $entity) {
$insertData = $this->prepareInsertData($entity);
// Execute insert on root table
$paramIndex = 1;
foreach ($insertData[$rootTableName] as $columnName => $value) {
$rootTableStmt->bindValue($paramIndex++, $value, $this->columnTypes[$columnName]);
}
$rootTableStmt->execute();
if ($isPostInsertId) {
$id = $idGenerator->generate($this->em, $entity);
$postInsertIds[$id] = $entity;
} else {
$id = $this->em->getUnitOfWork()->getEntityIdentifier($entity);
}
// Execute inserts on subtables.
// The order doesn't matter because all child tables link to the root table via FK.
foreach ($subTableStmts as $tableName => $stmt) {
$paramIndex = 1;
$data = isset($insertData[$tableName])
? $insertData[$tableName]
: array();
foreach ((array) $id as $idName => $idVal) {
$type = isset($this->columnTypes[$idName]) ? $this->columnTypes[$idName] : Type::STRING;
$stmt->bindValue($paramIndex++, $idVal, $type);
}
foreach ($data as $columnName => $value) {
$stmt->bindValue($paramIndex++, $value, $this->columnTypes[$columnName]);
}
$stmt->execute();
}
}
$rootTableStmt->closeCursor();
foreach ($subTableStmts as $stmt) {
$stmt->closeCursor();
}
if ($this->class->isVersioned) {
$this->assignDefaultVersionValue($entity, $id);
}
$this->queuedInserts = array();
return $postInsertIds;
}
/**
* {@inheritdoc}
*/
public function update($entity)
{
$updateData = $this->prepareUpdateData($entity);
if ( ! $updateData) {
return;
}
if (($isVersioned = $this->class->isVersioned) === false) {
return;
}
$versionedClass = $this->getVersionedClassMetadata();
$versionedTable = $versionedClass->getTableName();
foreach ($updateData as $tableName => $data) {
$tableName = $this->quotedTableMap[$tableName];
$versioned = $isVersioned && $versionedTable === $tableName;
$this->updateTable($entity, $tableName, $data, $versioned);
}
// Make sure the table with the version column is updated even if no columns on that
// table were affected.
if ($isVersioned && ! isset($updateData[$versionedTable])) {
$tableName = $this->quoteStrategy->getTableName($versionedClass, $this->platform);
$identifiers = $this->em->getUnitOfWork()->getEntityIdentifier($entity);
$this->updateTable($entity, $tableName, array(), true);
$this->assignDefaultVersionValue($entity, $identifiers);
}
}
/**
* {@inheritdoc}
*/
public function delete($entity)
{
$identifier = $this->em->getUnitOfWork()->getEntityIdentifier($entity);
$id = array_combine($this->class->getIdentifierColumnNames(), $identifier);
$this->deleteJoinTableRecords($identifier);
// If the database platform supports FKs, just
// delete the row from the root table. Cascades do the rest.
if ($this->platform->supportsForeignKeyConstraints()) {
$rootClass = $this->em->getClassMetadata($this->class->rootEntityName);
$rootTable = $this->quoteStrategy->getTableName($rootClass, $this->platform);
$this->conn->delete($rootTable, $id);
return;
}
// Delete from all tables individually, starting from this class' table up to the root table.
$rootTable = $this->quoteStrategy->getTableName($this->class, $this->platform);
$this->conn->delete($rootTable, $id);
foreach ($this->class->parentClasses as $parentClass) {
$parentMetadata = $this->em->getClassMetadata($parentClass);
$parentTable = $this->quoteStrategy->getTableName($parentMetadata, $this->platform);
$this->conn->delete($parentTable, $id);
}
}
/**
* {@inheritdoc}
*/
protected function getSelectSQL($criteria, $assoc = null, $lockMode = 0, $limit = null, $offset = null, array $orderBy = null)
{
$joinSql = '';
$identifierColumn = $this->class->getIdentifierColumnNames();
$baseTableAlias = $this->getSQLTableAlias($this->class->name);
// INNER JOIN parent tables
foreach ($this->class->parentClasses as $parentClassName) {
$contitions = array();
$parentClass = $this->em->getClassMetadata($parentClassName);
$tableAlias = $this->getSQLTableAlias($parentClassName);
$joinSql .= ' INNER JOIN ' . $this->quoteStrategy->getTableName($parentClass, $this->platform) . ' ' . $tableAlias . ' ON ';
foreach ($identifierColumn as $idColumn) {
$contitions[] = $baseTableAlias . '.' . $idColumn . ' = ' . $tableAlias . '.' . $idColumn;
}
$joinSql .= implode(' AND ', $contitions);
}
// OUTER JOIN sub tables
foreach ($this->class->subClasses as $subClassName) {
$contitions = array();
$subClass = $this->em->getClassMetadata($subClassName);
$tableAlias = $this->getSQLTableAlias($subClassName);
$joinSql .= ' LEFT JOIN ' . $this->quoteStrategy->getTableName($subClass, $this->platform) . ' ' . $tableAlias . ' ON ';
foreach ($identifierColumn as $idColumn) {
$contitions[] = $baseTableAlias . '.' . $idColumn . ' = ' . $tableAlias . '.' . $idColumn;
}
$joinSql .= implode(' AND ', $contitions);
}
if ($assoc != null && $assoc['type'] == ClassMetadata::MANY_TO_MANY) {
$joinSql .= $this->getSelectManyToManyJoinSQL($assoc);
}
$conditionSql = ($criteria instanceof Criteria)
? $this->getSelectConditionCriteriaSQL($criteria)
: $this->getSelectConditionSQL($criteria, $assoc);
// If the current class in the root entity, add the filters
if ($filterSql = $this->generateFilterConditionSQL($this->em->getClassMetadata($this->class->rootEntityName), $this->getSQLTableAlias($this->class->rootEntityName))) {
$conditionSql .= $conditionSql
? ' AND ' . $filterSql
: $filterSql;
}
$orderBySql = '';
if ($assoc !== null && isset($assoc['orderBy'])) {
$orderBy = $assoc['orderBy'];
}
if ($orderBy) {
$orderBySql = $this->getOrderBySQL($orderBy, $baseTableAlias);
}
$lockSql = '';
switch ($lockMode) {
case LockMode::PESSIMISTIC_READ:
$lockSql = ' ' . $this->platform->getReadLockSql();
break;
case LockMode::PESSIMISTIC_WRITE:
$lockSql = ' ' . $this->platform->getWriteLockSql();
break;
}
$tableName = $this->quoteStrategy->getTableName($this->class, $this->platform);
$where = $conditionSql != '' ? ' WHERE ' . $conditionSql : '';
$columnList = $this->getSelectColumnsSQL();
$query = 'SELECT ' . $columnList
. ' FROM '
. $tableName . ' ' . $baseTableAlias
. $joinSql
. $where
. $orderBySql;
return $this->platform->modifyLimitQuery($query, $limit, $offset) . $lockSql;
}
/**
* Get the FROM and optionally JOIN conditions to lock the entity managed by this persister.
*
* @return string
*/
public function getLockTablesSql()
{
$joinSql = '';
$identifierColumns = $this->class->getIdentifierColumnNames();
$baseTableAlias = $this->getSQLTableAlias($this->class->name);
$quotedTableName = $this->quoteStrategy->getTableName($this->class, $this->platform);
// INNER JOIN parent tables
foreach ($this->class->parentClasses as $parentClassName) {
$conditions = array();
$tableAlias = $this->getSQLTableAlias($parentClassName);
$parentClass = $this->em->getClassMetadata($parentClassName);
$joinSql .= ' INNER JOIN ' . $this->quoteStrategy->getTableName($parentClass, $this->platform) . ' ' . $tableAlias . ' ON ';
foreach ($identifierColumns as $idColumn) {
$conditions[] = $baseTableAlias . '.' . $idColumn . ' = ' . $tableAlias . '.' . $idColumn;
}
$joinSql .= implode(' AND ', $conditions);
}
return 'FROM ' . $quotedTableName . ' ' . $baseTableAlias . $joinSql;
}
/**
* Ensure this method is never called. This persister overrides getSelectEntitiesSQL directly.
*
* @return string
*/
protected function getSelectColumnsSQL()
{
// Create the column list fragment only once
if ($this->selectColumnListSql !== null) {
return $this->selectColumnListSql;
}
$columnList = array();
$this->rsm = new ResultSetMapping();
$discrColumn = $this->class->discriminatorColumn['name'];
$baseTableAlias = $this->getSQLTableAlias($this->class->name);
$resultColumnName = $this->platform->getSQLResultCasing($discrColumn);
$this->rsm->addEntityResult($this->class->name, 'r');
$this->rsm->setDiscriminatorColumn('r', $resultColumnName);
$this->rsm->addMetaResult('r', $resultColumnName, $discrColumn);
// Add regular columns
foreach ($this->class->fieldMappings as $fieldName => $mapping) {
$class = isset($mapping['inherited'])
? $this->em->getClassMetadata($mapping['inherited'])
: $this->class;
$columnList[] = $this->getSelectColumnSQL($fieldName, $class);
}
// Add foreign key columns
foreach ($this->class->associationMappings as $mapping) {
if ( ! $mapping['isOwningSide'] || ! ($mapping['type'] & ClassMetadata::TO_ONE)) {
continue;
}
$tableAlias = isset($mapping['inherited'])
? $this->getSQLTableAlias($mapping['inherited'])
: $baseTableAlias;
foreach ($mapping['targetToSourceKeyColumns'] as $srcColumn) {
$className = isset($mapping['inherited'])
? $mapping['inherited']
: $this->class->name;
$columnList[] = $this->getSelectJoinColumnSQL($tableAlias, $srcColumn, $className);
}
}
// Add discriminator column (DO NOT ALIAS, see AbstractEntityInheritancePersister#processSQLResult).
$tableAlias = ($this->class->rootEntityName == $this->class->name)
? $baseTableAlias
: $this->getSQLTableAlias($this->class->rootEntityName);
$columnList[] = $tableAlias . '.' . $discrColumn;
// sub tables
foreach ($this->class->subClasses as $subClassName) {
$subClass = $this->em->getClassMetadata($subClassName);
$tableAlias = $this->getSQLTableAlias($subClassName);
// Add subclass columns
foreach ($subClass->fieldMappings as $fieldName => $mapping) {
if (isset($mapping['inherited'])) {
continue;
}
$columnList[] = $this->getSelectColumnSQL($fieldName, $subClass);
}
// Add join columns (foreign keys)
foreach ($subClass->associationMappings as $mapping) {
if ( ! $mapping['isOwningSide']
|| ! ($mapping['type'] & ClassMetadata::TO_ONE)
|| isset($mapping['inherited'])) {
continue;
}
foreach ($mapping['targetToSourceKeyColumns'] as $srcColumn) {
$className = isset($mapping['inherited'])
? $mapping['inherited']
: $subClass->name;
$columnList[] = $this->getSelectJoinColumnSQL($tableAlias, $srcColumn, $className);
}
}
}
$this->selectColumnListSql = implode(', ', $columnList);
return $this->selectColumnListSql;
}
/**
* {@inheritdoc}
*/
protected function getInsertColumnList()
{
// Identifier columns must always come first in the column list of subclasses.
$columns = $this->class->parentClasses
? $this->class->getIdentifierColumnNames()
: array();
foreach ($this->class->reflFields as $name => $field) {
if (isset($this->class->fieldMappings[$name]['inherited'])
&& ! isset($this->class->fieldMappings[$name]['id'])
|| isset($this->class->associationMappings[$name]['inherited'])
|| ($this->class->isVersioned && $this->class->versionField == $name)) {
continue;
}
if (isset($this->class->associationMappings[$name])) {
$assoc = $this->class->associationMappings[$name];
if ($assoc['type'] & ClassMetadata::TO_ONE && $assoc['isOwningSide']) {
foreach ($assoc['targetToSourceKeyColumns'] as $sourceCol) {
$columns[] = $sourceCol;
}
}
} else if ($this->class->name != $this->class->rootEntityName ||
! $this->class->isIdGeneratorIdentity() || $this->class->identifier[0] != $name) {
$columns[] = $this->quoteStrategy->getColumnName($name, $this->class, $this->platform);
$this->columnTypes[$name] = $this->class->fieldMappings[$name]['type'];
}
}
// Add discriminator column if it is the topmost class.
if ($this->class->name == $this->class->rootEntityName) {
$columns[] = $this->class->discriminatorColumn['name'];
}
return $columns;
}
/**
* {@inheritdoc}
*/
protected function assignDefaultVersionValue($entity, $id)
{
$value = $this->fetchVersionValue($this->getVersionedClassMetadata(), $id);
$this->class->setFieldValue($entity, $this->class->versionField, $value);
}
}