302 lines
13 KiB
PHP
302 lines
13 KiB
PHP
<?php
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/*
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* $Id$
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.doctrine-project.org>.
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*/
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namespace Doctrine\ORM\Tools;
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use Doctrine\DBAL\Types\Type;
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use Doctrine\ORM\EntityManager;
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/**
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* The SchemaTool is a tool to create and/or drop database schemas based on
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* <tt>ClassMetadata</tt> class descriptors.
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*
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* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
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* @author Lukas Smith <smith@pooteeweet.org> (PEAR MDB2 library)
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* @author Roman Borschel <roman@code-factory.org>
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @link www.doctrine-project.org
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* @since 2.0
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* @version $Revision: 4805 $
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*/
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class SchemaTool
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{
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/** The EntityManager */
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private $_em;
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/** The DatabasePlatform */
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private $_platform;
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/**
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* Initializes a new SchemaTool instance that uses the connection of the
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* provided EntityManager.
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*
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* @param Doctrine\ORM\EntityManager $em
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*/
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public function __construct(EntityManager $em)
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{
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$this->_em = $em;
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$this->_platform = $em->getConnection()->getDatabasePlatform();
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}
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/**
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* Creates the database schema for the given array of ClassMetadata instances.
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*
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* @param array $classes
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*/
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public function createSchema(array $classes)
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{
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$createSchemaSql = $this->getCreateSchemaSql($classes);
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$conn = $this->_em->getConnection();
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foreach ($createSchemaSql as $sql) {
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$conn->execute($sql);
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}
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}
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/**
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* Gets an array of DDL statements for the specified array of ClassMetadata instances.
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*
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* @param array $classes
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* @return array $sql
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*/
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public function getCreateSchemaSql(array $classes)
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{
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$sql = array(); // All SQL statements
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$processedClasses = array(); // Reminder for processed classes, used for hierarchies
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$foreignKeyConstraints = array(); // FK SQL statements. Appended to $sql at the end.
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$sequences = array(); // Sequence SQL statements. Appended to $sql at the end.
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foreach ($classes as $class) {
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if (isset($processedClasses[$class->name])) {
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continue;
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}
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$options = array(); // table options
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$columns = array(); // table columns
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if ($class->isInheritanceTypeSingleTable()) {
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$columns = $this->_gatherColumns($class, $options);
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$this->_gatherRelationsSql($class, $sql, $columns, $foreignKeyConstraints);
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// Add the discriminator column
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$discrColumnDef = $this->_getDiscriminatorColumnDefinition($class);
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$columns[$discrColumnDef['name']] = $discrColumnDef;
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// Aggregate all the information from all classes in the hierarchy
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foreach ($class->parentClasses as $parentClassName) {
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// Parent class information is already contained in this class
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$processedClasses[$parentClassName] = true;
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}
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foreach ($class->subClasses as $subClassName) {
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$subClass = $this->_em->getClassMetadata($subClassName);
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$columns = array_merge($columns, $this->_gatherColumns($subClass, $options));
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$this->_gatherRelationsSql($subClass, $sql, $columns, $foreignKeyConstraints);
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$processedClasses[$subClassName] = true;
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}
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} else if ($class->isInheritanceTypeJoined()) {
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// Add all non-inherited fields as columns
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foreach ($class->fieldMappings as $fieldName => $mapping) {
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if ( ! isset($mapping['inherited'])) {
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$columns[$mapping['columnName']] = $this->_gatherColumn($class, $mapping, $options);
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}
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}
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$this->_gatherRelationsSql($class, $sql, $columns, $foreignKeyConstraints);
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// Add the discriminator column only to the root table
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if ($class->name == $class->rootEntityName) {
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$discrColumnDef = $this->_getDiscriminatorColumnDefinition($class);
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$columns[$discrColumnDef['name']] = $discrColumnDef;
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} else {
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// Add an ID FK column to child tables
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$idMapping = $class->fieldMappings[$class->identifier[0]];
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$idColumn = $this->_gatherColumn($class, $idMapping, $options);
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unset($idColumn['autoincrement']);
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$columns[$idMapping['columnName']] = $idColumn;
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// Add a FK constraint on the ID column
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$constraint = array();
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$constraint['tableName'] = $class->getTableName();
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$constraint['foreignTable'] = $this->_em->getClassMetadata($class->rootEntityName)->getTableName();
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$constraint['local'] = array($idMapping['columnName']);
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$constraint['foreign'] = array($idMapping['columnName']);
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$constraint['onDelete'] = 'CASCADE';
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$foreignKeyConstraints[] = $constraint;
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}
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} else if ($class->isInheritanceTypeTablePerClass()) {
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//TODO
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} else {
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$columns = $this->_gatherColumns($class, $options);
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$this->_gatherRelationsSql($class, $sql, $columns, $foreignKeyConstraints);
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}
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$sql = array_merge($sql, $this->_platform->getCreateTableSql($class->getTableName(), $columns, $options));
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$processedClasses[$class->name] = true;
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if ($class->isIdGeneratorSequence() && $class->name == $class->rootEntityName) {
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$seqDef = $class->getSequenceGeneratorDefinition();
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$sequences[] = $this->_platform->getCreateSequenceSql(
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$seqDef['sequenceName'],
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$seqDef['initialValue'],
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$seqDef['allocationSize']
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);
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}
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}
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// Append the foreign key constraints SQL
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if ($this->_platform->supportsForeignKeyConstraints()) {
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foreach ($foreignKeyConstraints as $fkConstraint) {
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$sql = array_merge($sql, (array)$this->_platform->getCreateForeignKeySql($fkConstraint['tableName'], $fkConstraint));
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}
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}
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// Append the sequence SQL
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$sql = array_merge($sql, $sequences);
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return $sql;
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}
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private function _getDiscriminatorColumnDefinition($class)
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{
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$discrColumn = $class->discriminatorColumn;
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return array(
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'name' => $discrColumn['name'],
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'type' => Type::getType($discrColumn['type']),
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'length' => $discrColumn['length'],
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'notnull' => true
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);
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}
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/**
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* Gathers the column definitions of all field mappings found in the given class.
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*
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* @param ClassMetadata $class
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* @param array $options
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* @return array
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*/
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private function _gatherColumns($class, array &$options)
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{
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$columns = array();
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foreach ($class->fieldMappings as $fieldName => $mapping) {
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$columns[$mapping['columnName']] = $this->_gatherColumn($class, $mapping, $options);
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}
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return $columns;
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}
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private function _gatherColumn($class, array $mapping, array &$options)
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{
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$column = array();
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$column['name'] = $mapping['columnName'];
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$column['type'] = Type::getType($mapping['type']);
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$column['length'] = $mapping['length'];
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$column['notnull'] = ! $mapping['nullable'];
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if ($class->isIdentifier($mapping['fieldName'])) {
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$column['primary'] = true;
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$options['primary'][] = $mapping['columnName'];
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if ($class->isIdGeneratorIdentity()) {
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$column['autoincrement'] = true;
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}
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}
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return $column;
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}
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private function _gatherRelationsSql($class, array &$sql, array &$columns, array &$constraints)
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{
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foreach ($class->associationMappings as $fieldName => $mapping) {
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if (isset($class->inheritedAssociationFields[$fieldName])) {
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continue;
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}
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$foreignClass = $this->_em->getClassMetadata($mapping->targetEntityName);
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if ($mapping->isOneToOne() && $mapping->isOwningSide) {
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$constraint = array();
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$constraint['tableName'] = $class->getTableName();
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$constraint['foreignTable'] = $foreignClass->getTableName();
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$constraint['local'] = array();
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$constraint['foreign'] = array();
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foreach ($mapping->getJoinColumns() as $joinColumn) {
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$column = array();
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$column['name'] = $joinColumn['name'];
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$column['type'] = Type::getType($foreignClass->getTypeOfColumn($joinColumn['referencedColumnName']));
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$columns[$joinColumn['name']] = $column;
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$constraint['local'][] = $joinColumn['name'];
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$constraint['foreign'][] = $joinColumn['referencedColumnName'];
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}
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$constraints[] = $constraint;
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} else if ($mapping->isOneToMany() && $mapping->isOwningSide) {
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//... create join table, one-many through join table supported later
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throw DoctrineException::updateMe("Not yet implemented.");
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} else if ($mapping->isManyToMany() && $mapping->isOwningSide) {
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// create join table
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$joinTableColumns = array();
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$joinTableOptions = array();
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$joinTable = $mapping->getJoinTable();
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$constraint1 = array();
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$constraint1['tableName'] = $joinTable['name'];
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$constraint1['foreignTable'] = $class->getTableName();
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$constraint1['local'] = array();
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$constraint1['foreign'] = array();
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foreach ($joinTable['joinColumns'] as $joinColumn) {
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$column = array();
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$column['primary'] = true;
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$joinTableOptions['primary'][] = $joinColumn['name'];
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$column['name'] = $joinColumn['name'];
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$column['type'] = Type::getType($class->getTypeOfColumn($joinColumn['referencedColumnName']));
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$joinTableColumns[$joinColumn['name']] = $column;
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$constraint1['local'][] = $joinColumn['name'];
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$constraint1['foreign'][] = $joinColumn['referencedColumnName'];
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}
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$constraints[] = $constraint1;
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$constraint2 = array();
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$constraint2['tableName'] = $joinTable['name'];
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$constraint2['foreignTable'] = $foreignClass->getTableName();
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$constraint2['local'] = array();
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$constraint2['foreign'] = array();
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foreach ($joinTable['inverseJoinColumns'] as $inverseJoinColumn) {
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$column = array();
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$column['primary'] = true;
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$joinTableOptions['primary'][] = $inverseJoinColumn['name'];
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$column['name'] = $inverseJoinColumn['name'];
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$column['type'] = Type::getType($this->_em->getClassMetadata($mapping->getTargetEntityName())
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->getTypeOfColumn($inverseJoinColumn['referencedColumnName']));
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$joinTableColumns[$inverseJoinColumn['name']] = $column;
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$constraint2['local'][] = $inverseJoinColumn['name'];
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$constraint2['foreign'][] = $inverseJoinColumn['referencedColumnName'];
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}
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$constraints[] = $constraint2;
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$sql = array_merge($sql, $this->_platform->getCreateTableSql(
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$joinTable['name'], $joinTableColumns, $joinTableOptions));
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}
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}
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}
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public function dropSchema(array $classes)
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{
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//TODO
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}
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public function getDropSchemaSql(array $classes)
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{
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//TODO
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}
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} |