--- /dev/null
+<?php
+/*
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the MIT license. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+namespace Doctrine\DBAL\Schema\Synchronizer;
+
+use Doctrine\DBAL\Connection;
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\DBAL\Schema\Comparator;
+use Doctrine\DBAL\Schema\Visitor\DropSchemaSqlCollector;
+
+/**
+ * Schema Synchronizer for Default DBAL Connection
+ *
+ * @author Benjamin Eberlei <kontakt@beberlei.de>
+ */
+class SingleDatabaseSynchronizer extends AbstractSchemaSynchronizer
+{
+ /**
+ * @var Doctrine\DBAL\Platforms\AbstractPlatform
+ */
+ private $platform;
+
+ public function __construct(Connection $conn)
+ {
+ parent::__construct($conn);
+ $this->platform = $conn->getDatabasePlatform();
+ }
+
+ /**
+ * Get the SQL statements that can be executed to create the schema.
+ *
+ * @param Schema $createSchema
+ * @return array
+ */
+ public function getCreateSchema(Schema $createSchema)
+ {
+ return $createSchema->toSql($this->platform);
+ }
+
+ /**
+ * Get the SQL Statements to update given schema with the underlying db.
+ *
+ * @param Schema $toSchema
+ * @param bool $noDrops
+ * @return array
+ */
+ public function getUpdateSchema(Schema $toSchema, $noDrops = false)
+ {
+ $comparator = new Comparator();
+ $sm = $this->conn->getSchemaManager();
+
+ $fromSchema = $sm->createSchema();
+ $schemaDiff = $comparator->compare($fromSchema, $toSchema);
+
+ if ($noDrops) {
+ return $schemaDiff->toSaveSql($this->platform);
+ }
+
+ return $schemaDiff->toSql($this->platform);
+ }
+
+ /**
+ * Get the SQL Statements to drop the given schema from underlying db.
+ *
+ * @param Schema $dropSchema
+ * @return array
+ */
+ public function getDropSchema(Schema $dropSchema)
+ {
+ $visitor = new DropSchemaSqlCollector($this->platform);
+ $sm = $this->conn->getSchemaManager();
+
+ $fullSchema = $sm->createSchema();
+
+ foreach ($fullSchema->getTables() as $table) {
+ if ( $dropSchema->hasTable($table->getName())) {
+ $visitor->acceptTable($table);
+ }
+
+ foreach ($table->getForeignKeys() as $foreignKey) {
+ if ( ! $dropSchema->hasTable($table->getName())) {
+ continue;
+ }
+
+ if ( ! $dropSchema->hasTable($foreignKey->getForeignTableName())) {
+ continue;
+ }
+
+ $visitor->acceptForeignKey($table, $foreignKey);
+ }
+ }
+
+ if ( ! $this->platform->supportsSequences()) {
+ return $visitor->getQueries();
+ }
+
+ foreach ($dropSchema->getSequences() as $sequence) {
+ $visitor->acceptSequence($sequence);
+ }
+
+ foreach ($dropSchema->getTables() as $table) {
+ /* @var $sequence Table */
+ if ( ! $table->hasPrimaryKey()) {
+ continue;
+ }
+
+ $columns = $table->getPrimaryKey()->getColumns();
+ if (count($columns) > 1) {
+ continue;
+ }
+
+ $checkSequence = $table->getName() . "_" . $columns[0] . "_seq";
+ if ($fullSchema->hasSequence($checkSequence)) {
+ $visitor->acceptSequence($fullSchema->getSequence($checkSequence));
+ }
+ }
+
+ return $visitor->getQueries();
+ }
+
+ /**
+ * Get the SQL statements to drop all schema assets from underlying db.
+ *
+ * @return array
+ */
+ public function getDropAllSchema()
+ {
+ $sm = $this->conn->getSchemaManager();
+ $visitor = new DropSchemaSqlCollector($this->platform);
+
+ /* @var $schema \Doctrine\DBAL\Schema\Schema */
+ $schema = $sm->createSchema();
+ $schema->visit($visitor);
+
+ return $visitor->getQueries();
+ }
+
+ /**
+ * Create the Schema
+ *
+ * @param Schema $createSchema
+ * @return void
+ */
+ public function createSchema(Schema $createSchema)
+ {
+ $this->processSql($this->getCreateSchema($createSchema));
+ }
+
+ /**
+ * Update the Schema to new schema version.
+ *
+ * @param Schema $toSchema
+ * @param bool $noDrops
+ * @return void
+ */
+ public function updateSchema(Schema $toSchema, $noDrops = false)
+ {
+ $this->processSql($this->getUpdateSchema($toSchema, $noDrops));
+ }
+
+ /**
+ * Drop the given database schema from the underlying db.
+ *
+ * @param Schema $dropSchema
+ * @return void
+ */
+ public function dropSchema(Schema $dropSchema)
+ {
+ $this->processSqlSafely($this->getDropSchema($dropSchema));
+ }
+
+ /**
+ * Drop all assets from the underyling db.
+ *
+ * @return void
+ */
+ public function dropAllSchema()
+ {
+ $this->processSql($this->getDropAllSchema());
+ }
+}
+