1
0
mirror of synced 2024-12-15 07:36:03 +03:00
doctrine2/lib/Doctrine/ORM/Tools/SchemaTool.php
2012-01-26 15:05:26 +01:00

708 lines
27 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 LGPL. For more information, see
* <http://www.doctrine-project.org>.
*/
namespace Doctrine\ORM\Tools;
use Doctrine\ORM\ORMException,
Doctrine\DBAL\Types\Type,
Doctrine\DBAL\Schema\Schema,
Doctrine\DBAL\Schema\Visitor\RemoveNamespacedAssets,
Doctrine\ORM\EntityManager,
Doctrine\ORM\Mapping\ClassMetadata,
Doctrine\ORM\Internal\CommitOrderCalculator,
Doctrine\ORM\Tools\Event\GenerateSchemaTableEventArgs,
Doctrine\ORM\Tools\Event\GenerateSchemaEventArgs;
/**
* The SchemaTool is a tool to create/drop/update database schemas based on
* <tt>ClassMetadata</tt> class descriptors.
*
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.doctrine-project.org
* @since 2.0
* @version $Revision$
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
* @author Jonathan Wage <jonwage@gmail.com>
* @author Roman Borschel <roman@code-factory.org>
* @author Benjamin Eberlei <kontakt@beberlei.de>
*/
class SchemaTool
{
/**
* @var \Doctrine\ORM\EntityManager
*/
private $_em;
/**
* @var \Doctrine\DBAL\Platforms\AbstractPlatform
*/
private $_platform;
/**
* Initializes a new SchemaTool instance that uses the connection of the
* provided EntityManager.
*
* @param \Doctrine\ORM\EntityManager $em
*/
public function __construct(EntityManager $em)
{
$this->_em = $em;
$this->_platform = $em->getConnection()->getDatabasePlatform();
}
/**
* Creates the database schema for the given array of ClassMetadata instances.
*
* @throws ToolsException
* @param array $classes
* @return void
*/
public function createSchema(array $classes)
{
$createSchemaSql = $this->getCreateSchemaSql($classes);
$conn = $this->_em->getConnection();
foreach ($createSchemaSql as $sql) {
try {
$conn->executeQuery($sql);
} catch(\Exception $e) {
throw ToolsException::schemaToolFailure($sql, $e);
}
}
}
/**
* Gets the list of DDL statements that are required to create the database schema for
* the given list of ClassMetadata instances.
*
* @param array $classes
* @return array $sql The SQL statements needed to create the schema for the classes.
*/
public function getCreateSchemaSql(array $classes)
{
$schema = $this->getSchemaFromMetadata($classes);
return $schema->toSql($this->_platform);
}
/**
* Some instances of ClassMetadata don't need to be processed in the SchemaTool context. This method detects them.
*
* @param ClassMetadata $class
* @param array $processedClasses
* @return bool
*/
private function processingNotRequired($class, array $processedClasses)
{
return (
isset($processedClasses[$class->name]) ||
$class->isMappedSuperclass ||
($class->isInheritanceTypeSingleTable() && $class->name != $class->rootEntityName)
);
}
/**
* From a given set of metadata classes this method creates a Schema instance.
*
* @param array $classes
* @return Schema
*/
public function getSchemaFromMetadata(array $classes)
{
$processedClasses = array(); // Reminder for processed classes, used for hierarchies
$sm = $this->_em->getConnection()->getSchemaManager();
$metadataSchemaConfig = $sm->createSchemaConfig();
$metadataSchemaConfig->setExplicitForeignKeyIndexes(false);
$schema = new Schema(array(), array(), $metadataSchemaConfig);
$evm = $this->_em->getEventManager();
foreach ($classes as $class) {
if ($this->processingNotRequired($class, $processedClasses)) {
continue;
}
$table = $schema->createTable($class->getQuotedTableName($this->_platform));
$columns = array(); // table columns
if ($class->isInheritanceTypeSingleTable()) {
$columns = $this->_gatherColumns($class, $table);
$this->_gatherRelationsSql($class, $table, $schema);
// Add the discriminator column
$this->addDiscriminatorColumnDefinition($class, $table);
// Aggregate all the information from all classes in the hierarchy
foreach ($class->parentClasses as $parentClassName) {
// Parent class information is already contained in this class
$processedClasses[$parentClassName] = true;
}
foreach ($class->subClasses as $subClassName) {
$subClass = $this->_em->getClassMetadata($subClassName);
$this->_gatherColumns($subClass, $table);
$this->_gatherRelationsSql($subClass, $table, $schema);
$processedClasses[$subClassName] = true;
}
} else if ($class->isInheritanceTypeJoined()) {
// Add all non-inherited fields as columns
$pkColumns = array();
foreach ($class->fieldMappings as $fieldName => $mapping) {
if ( ! isset($mapping['inherited'])) {
$columnName = $class->getQuotedColumnName($mapping['fieldName'], $this->_platform);
$this->_gatherColumn($class, $mapping, $table);
if ($class->isIdentifier($fieldName)) {
$pkColumns[] = $columnName;
}
}
}
$this->_gatherRelationsSql($class, $table, $schema);
// Add the discriminator column only to the root table
if ($class->name == $class->rootEntityName) {
$this->addDiscriminatorColumnDefinition($class, $table);
} else {
// Add an ID FK column to child tables
/* @var \Doctrine\ORM\Mapping\ClassMetadata $class */
$idMapping = $class->fieldMappings[$class->identifier[0]];
$this->_gatherColumn($class, $idMapping, $table);
$columnName = $class->getQuotedColumnName($class->identifier[0], $this->_platform);
// TODO: This seems rather hackish, can we optimize it?
$table->getColumn($columnName)->setAutoincrement(false);
$pkColumns[] = $columnName;
// Add a FK constraint on the ID column
$table->addUnnamedForeignKeyConstraint(
$this->_em->getClassMetadata($class->rootEntityName)->getQuotedTableName($this->_platform),
array($columnName), array($columnName), array('onDelete' => 'CASCADE')
);
}
$table->setPrimaryKey($pkColumns);
} else if ($class->isInheritanceTypeTablePerClass()) {
throw ORMException::notSupported();
} else {
$this->_gatherColumns($class, $table);
$this->_gatherRelationsSql($class, $table, $schema);
}
$pkColumns = array();
foreach ($class->identifier AS $identifierField) {
if (isset($class->fieldMappings[$identifierField])) {
$pkColumns[] = $class->getQuotedColumnName($identifierField, $this->_platform);
} else if (isset($class->associationMappings[$identifierField])) {
/* @var $assoc \Doctrine\ORM\Mapping\OneToOne */
$assoc = $class->associationMappings[$identifierField];
foreach ($assoc['joinColumns'] AS $joinColumn) {
$pkColumns[] = $joinColumn['name'];
}
}
}
if (!$table->hasIndex('primary')) {
$table->setPrimaryKey($pkColumns);
}
if (isset($class->table['indexes'])) {
foreach ($class->table['indexes'] AS $indexName => $indexData) {
$table->addIndex($indexData['columns'], is_numeric($indexName) ? null : $indexName);
}
}
if (isset($class->table['uniqueConstraints'])) {
foreach ($class->table['uniqueConstraints'] AS $indexName => $indexData) {
$table->addUniqueIndex($indexData['columns'], is_numeric($indexName) ? null : $indexName);
}
}
if (isset($class->table['options'])) {
foreach ($class->table['options'] AS $key => $val) {
$table->addOption($key, $val);
}
}
$processedClasses[$class->name] = true;
if ($class->isIdGeneratorSequence() && $class->name == $class->rootEntityName) {
$seqDef = $class->sequenceGeneratorDefinition;
if (!$schema->hasSequence($seqDef['sequenceName'])) {
$schema->createSequence(
$seqDef['sequenceName'],
$seqDef['allocationSize'],
$seqDef['initialValue']
);
}
}
if ($evm->hasListeners(ToolEvents::postGenerateSchemaTable)) {
$evm->dispatchEvent(ToolEvents::postGenerateSchemaTable, new GenerateSchemaTableEventArgs($class, $schema, $table));
}
}
if ( ! $this->_platform->supportsSchemas() && ! $this->_platform->canEmulateSchemas() ) {
$schema->visit(new RemoveNamespacedAssets());
}
if ($evm->hasListeners(ToolEvents::postGenerateSchema)) {
$evm->dispatchEvent(ToolEvents::postGenerateSchema, new GenerateSchemaEventArgs($this->_em, $schema));
}
return $schema;
}
/**
* Gets a portable column definition as required by the DBAL for the discriminator
* column of a class.
*
* @param ClassMetadata $class
* @return array The portable column definition of the discriminator column as required by
* the DBAL.
*/
private function addDiscriminatorColumnDefinition($class, $table)
{
$discrColumn = $class->discriminatorColumn;
if (!isset($discrColumn['type']) || (strtolower($discrColumn['type']) == 'string' && $discrColumn['length'] === null)) {
$discrColumn['type'] = 'string';
$discrColumn['length'] = 255;
}
$table->addColumn(
$discrColumn['name'],
$discrColumn['type'],
array('length' => $discrColumn['length'], 'notnull' => true)
);
}
/**
* Gathers the column definitions as required by the DBAL of all field mappings
* found in the given class.
*
* @param ClassMetadata $class
* @param Table $table
* @return array The list of portable column definitions as required by the DBAL.
*/
private function _gatherColumns($class, $table)
{
$columns = array();
$pkColumns = array();
foreach ($class->fieldMappings as $fieldName => $mapping) {
if ($class->isInheritanceTypeSingleTable() && isset($mapping['inherited'])) {
continue;
}
$column = $this->_gatherColumn($class, $mapping, $table);
if ($class->isIdentifier($mapping['fieldName'])) {
$pkColumns[] = $class->getQuotedColumnName($mapping['fieldName'], $this->_platform);
}
}
// For now, this is a hack required for single table inheritence, since this method is called
// twice by single table inheritence relations
if(!$table->hasIndex('primary')) {
//$table->setPrimaryKey($pkColumns);
}
return $columns;
}
/**
* Creates a column definition as required by the DBAL from an ORM field mapping definition.
*
* @param ClassMetadata $class The class that owns the field mapping.
* @param array $mapping The field mapping.
* @param Table $table
* @return array The portable column definition as required by the DBAL.
*/
private function _gatherColumn($class, array $mapping, $table)
{
$columnName = $class->getQuotedColumnName($mapping['fieldName'], $this->_platform);
$columnType = $mapping['type'];
$options = array();
$options['length'] = isset($mapping['length']) ? $mapping['length'] : null;
$options['notnull'] = isset($mapping['nullable']) ? ! $mapping['nullable'] : true;
if ($class->isInheritanceTypeSingleTable() && count($class->parentClasses) > 0) {
$options['notnull'] = false;
}
$options['platformOptions'] = array();
$options['platformOptions']['version'] = $class->isVersioned && $class->versionField == $mapping['fieldName'] ? true : false;
if(strtolower($columnType) == 'string' && $options['length'] === null) {
$options['length'] = 255;
}
if (isset($mapping['precision'])) {
$options['precision'] = $mapping['precision'];
}
if (isset($mapping['scale'])) {
$options['scale'] = $mapping['scale'];
}
if (isset($mapping['default'])) {
$options['default'] = $mapping['default'];
}
if (isset($mapping['columnDefinition'])) {
$options['columnDefinition'] = $mapping['columnDefinition'];
}
if (isset($mapping['options'])) {
$options['customSchemaOptions'] = $mapping['options'];
}
if ($class->isIdGeneratorIdentity() && $class->getIdentifierFieldNames() == array($mapping['fieldName'])) {
$options['autoincrement'] = true;
}
if ($class->isInheritanceTypeJoined() && $class->name != $class->rootEntityName) {
$options['autoincrement'] = false;
}
if ($table->hasColumn($columnName)) {
// required in some inheritance scenarios
$table->changeColumn($columnName, $options);
} else {
$table->addColumn($columnName, $columnType, $options);
}
$isUnique = isset($mapping['unique']) ? $mapping['unique'] : false;
if ($isUnique) {
$table->addUniqueIndex(array($columnName));
}
}
/**
* Gathers the SQL for properly setting up the relations of the given class.
* This includes the SQL for foreign key constraints and join tables.
*
* @param ClassMetadata $class
* @param \Doctrine\DBAL\Schema\Table $table
* @param \Doctrine\DBAL\Schema\Schema $schema
* @return void
*/
private function _gatherRelationsSql($class, $table, $schema)
{
foreach ($class->associationMappings as $fieldName => $mapping) {
if (isset($mapping['inherited'])) {
continue;
}
$foreignClass = $this->_em->getClassMetadata($mapping['targetEntity']);
if ($mapping['type'] & ClassMetadata::TO_ONE && $mapping['isOwningSide']) {
$primaryKeyColumns = $uniqueConstraints = array(); // PK is unnecessary for this relation-type
$this->_gatherRelationJoinColumns($mapping['joinColumns'], $table, $foreignClass, $mapping, $primaryKeyColumns, $uniqueConstraints);
foreach($uniqueConstraints AS $indexName => $unique) {
$table->addUniqueIndex($unique['columns'], is_numeric($indexName) ? null : $indexName);
}
} else if ($mapping['type'] == ClassMetadata::ONE_TO_MANY && $mapping['isOwningSide']) {
//... create join table, one-many through join table supported later
throw ORMException::notSupported();
} else if ($mapping['type'] == ClassMetadata::MANY_TO_MANY && $mapping['isOwningSide']) {
// create join table
$joinTable = $mapping['joinTable'];
$theJoinTable = $schema->createTable($foreignClass->getQuotedJoinTableName($mapping, $this->_platform));
$primaryKeyColumns = $uniqueConstraints = array();
// Build first FK constraint (relation table => source table)
$this->_gatherRelationJoinColumns($joinTable['joinColumns'], $theJoinTable, $class, $mapping, $primaryKeyColumns, $uniqueConstraints);
// Build second FK constraint (relation table => target table)
$this->_gatherRelationJoinColumns($joinTable['inverseJoinColumns'], $theJoinTable, $foreignClass, $mapping, $primaryKeyColumns, $uniqueConstraints);
$theJoinTable->setPrimaryKey($primaryKeyColumns);
foreach($uniqueConstraints AS $indexName => $unique) {
$theJoinTable->addUniqueIndex($unique['columns'], is_numeric($indexName) ? null : $indexName);
}
}
}
}
/**
* Get the class metadata that is responsible for the definition of the referenced column name.
*
* Previously this was a simple task, but with DDC-117 this problem is actually recursive. If its
* not a simple field, go through all identifier field names that are associations recursivly and
* find that referenced column name.
*
* TODO: Is there any way to make this code more pleasing?
*
* @param ClassMetadata $class
* @param string $referencedColumnName
* @return array(ClassMetadata, referencedFieldName)
*/
private function getDefiningClass($class, $referencedColumnName)
{
$referencedFieldName = $class->getFieldName($referencedColumnName);
if ($class->hasField($referencedFieldName)) {
return array($class, $referencedFieldName);
} else if (in_array($referencedColumnName, $class->getIdentifierColumnNames())) {
// it seems to be an entity as foreign key
foreach ($class->getIdentifierFieldNames() AS $fieldName) {
if ($class->hasAssociation($fieldName) && $class->getSingleAssociationJoinColumnName($fieldName) == $referencedColumnName) {
return $this->getDefiningClass(
$this->_em->getClassMetadata($class->associationMappings[$fieldName]['targetEntity']),
$class->getSingleAssociationReferencedJoinColumnName($fieldName)
);
}
}
}
return null;
}
/**
* Gather columns and fk constraints that are required for one part of relationship.
*
* @param array $joinColumns
* @param \Doctrine\DBAL\Schema\Table $theJoinTable
* @param ClassMetadata $class
* @param array $mapping
* @param array $primaryKeyColumns
* @param array $uniqueConstraints
*/
private function _gatherRelationJoinColumns($joinColumns, $theJoinTable, $class, $mapping, &$primaryKeyColumns, &$uniqueConstraints)
{
$localColumns = array();
$foreignColumns = array();
$fkOptions = array();
$foreignTableName = $class->getQuotedTableName($this->_platform);
foreach ($joinColumns as $joinColumn) {
$columnName = $joinColumn['name'];
list($definingClass, $referencedFieldName) = $this->getDefiningClass($class, $joinColumn['referencedColumnName']);
if (!$definingClass) {
throw new \Doctrine\ORM\ORMException(
"Column name `".$joinColumn['referencedColumnName']."` referenced for relation from ".
$mapping['sourceEntity'] . " towards ". $mapping['targetEntity'] . " does not exist."
);
}
$primaryKeyColumns[] = $columnName;
$localColumns[] = $columnName;
$foreignColumns[] = $joinColumn['referencedColumnName'];
if ( ! $theJoinTable->hasColumn($joinColumn['name'])) {
// Only add the column to the table if it does not exist already.
// It might exist already if the foreign key is mapped into a regular
// property as well.
$fieldMapping = $definingClass->getFieldMapping($referencedFieldName);
$columnDef = null;
if (isset($joinColumn['columnDefinition'])) {
$columnDef = $joinColumn['columnDefinition'];
} else if (isset($fieldMapping['columnDefinition'])) {
$columnDef = $fieldMapping['columnDefinition'];
}
$columnOptions = array('notnull' => false, 'columnDefinition' => $columnDef);
if (isset($joinColumn['nullable'])) {
$columnOptions['notnull'] = !$joinColumn['nullable'];
}
if ($fieldMapping['type'] == "string" && isset($fieldMapping['length'])) {
$columnOptions['length'] = $fieldMapping['length'];
} else if ($fieldMapping['type'] == "decimal") {
$columnOptions['scale'] = $fieldMapping['scale'];
$columnOptions['precision'] = $fieldMapping['precision'];
}
$theJoinTable->addColumn($columnName, $fieldMapping['type'], $columnOptions);
}
if (isset($joinColumn['unique']) && $joinColumn['unique'] == true) {
$uniqueConstraints[] = array('columns' => array($columnName));
}
if (isset($joinColumn['onDelete'])) {
$fkOptions['onDelete'] = $joinColumn['onDelete'];
}
}
$theJoinTable->addUnnamedForeignKeyConstraint(
$foreignTableName, $localColumns, $foreignColumns, $fkOptions
);
}
/**
* Drops the database schema for the given classes.
*
* In any way when an exception is thrown it is supressed since drop was
* issued for all classes of the schema and some probably just don't exist.
*
* @param array $classes
* @return void
*/
public function dropSchema(array $classes)
{
$dropSchemaSql = $this->getDropSchemaSQL($classes);
$conn = $this->_em->getConnection();
foreach ($dropSchemaSql as $sql) {
try {
$conn->executeQuery($sql);
} catch(\Exception $e) {
}
}
}
/**
* Drops all elements in the database of the current connection.
*
* @return void
*/
public function dropDatabase()
{
$dropSchemaSql = $this->getDropDatabaseSQL();
$conn = $this->_em->getConnection();
foreach ($dropSchemaSql as $sql) {
$conn->executeQuery($sql);
}
}
/**
* Gets the SQL needed to drop the database schema for the connections database.
*
* @return array
*/
public function getDropDatabaseSQL()
{
$sm = $this->_em->getConnection()->getSchemaManager();
$schema = $sm->createSchema();
$visitor = new \Doctrine\DBAL\Schema\Visitor\DropSchemaSqlCollector($this->_platform);
/* @var $schema \Doctrine\DBAL\Schema\Schema */
$schema->visit($visitor);
return $visitor->getQueries();
}
/**
* Get SQL to drop the tables defined by the passed classes.
*
* @param array $classes
* @return array
*/
public function getDropSchemaSQL(array $classes)
{
$visitor = new \Doctrine\DBAL\Schema\Visitor\DropSchemaSqlCollector($this->_platform);
$schema = $this->getSchemaFromMetadata($classes);
$sm = $this->_em->getConnection()->getSchemaManager();
$fullSchema = $sm->createSchema();
foreach ($fullSchema->getTables() AS $table) {
if (!$schema->hasTable($table->getName())) {
foreach ($table->getForeignKeys() AS $foreignKey) {
/* @var $foreignKey \Doctrine\DBAL\Schema\ForeignKeyConstraint */
if ($schema->hasTable($foreignKey->getForeignTableName())) {
$visitor->acceptForeignKey($table, $foreignKey);
}
}
} else {
$visitor->acceptTable($table);
foreach ($table->getForeignKeys() AS $foreignKey) {
$visitor->acceptForeignKey($table, $foreignKey);
}
}
}
if ($this->_platform->supportsSequences()) {
foreach ($schema->getSequences() AS $sequence) {
$visitor->acceptSequence($sequence);
}
foreach ($schema->getTables() AS $table) {
/* @var $sequence Table */
if ($table->hasPrimaryKey()) {
$columns = $table->getPrimaryKey()->getColumns();
if (count($columns) == 1) {
$checkSequence = $table->getName() . "_" . $columns[0] . "_seq";
if ($fullSchema->hasSequence($checkSequence)) {
$visitor->acceptSequence($fullSchema->getSequence($checkSequence));
}
}
}
}
}
return $visitor->getQueries();
}
/**
* Updates the database schema of the given classes by comparing the ClassMetadata
* instances to the current database schema that is inspected. If $saveMode is set
* to true the command is executed in the Database, else SQL is returned.
*
* @param array $classes
* @param boolean $saveMode
* @return void
*/
public function updateSchema(array $classes, $saveMode=false)
{
$updateSchemaSql = $this->getUpdateSchemaSql($classes, $saveMode);
$conn = $this->_em->getConnection();
foreach ($updateSchemaSql as $sql) {
$conn->executeQuery($sql);
}
}
/**
* Gets the sequence of SQL statements that need to be performed in order
* to bring the given class mappings in-synch with the relational schema.
* If $saveMode is set to true the command is executed in the Database,
* else SQL is returned.
*
* @param array $classes The classes to consider.
* @param boolean $saveMode True for writing to DB, false for SQL string
* @return array The sequence of SQL statements.
*/
public function getUpdateSchemaSql(array $classes, $saveMode=false)
{
$sm = $this->_em->getConnection()->getSchemaManager();
$fromSchema = $sm->createSchema();
$toSchema = $this->getSchemaFromMetadata($classes);
$comparator = new \Doctrine\DBAL\Schema\Comparator();
$schemaDiff = $comparator->compare($fromSchema, $toSchema);
if ($saveMode) {
return $schemaDiff->toSaveSql($this->_platform);
} else {
return $schemaDiff->toSql($this->_platform);
}
}
}