/**
* 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();
}
/**
* Gets SQL to drop the tables defined by the passed classes.
*
* @param array $classes
*
* @return array
*/
public function getDropSchemaSQL(array $classes)
{
$visitor = new DropSchemaSqlCollector($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();
}
/**
* Drop all tables.
*
* @param array $metadata
* @return array
*/
public function drop(array $metadata)
{
$visitor = new DropSchemaSqlCollector($this->platform);
$schema = $this->getSchemaFromMetadata($metadata);
$fullSchema = $this->schemaManager->createSchema();
foreach ($fullSchema->getTables() as $table) {
if ($schema->hasTable($table->getName())) {
$visitor->acceptTable($table);
}
}
$statements = $visitor->getQueries();
$this->build($statements);
return $statements;
}