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<?php |
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declare(strict_types=1); |
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namespace Doctrine\DBAL\Schema\Visitor; |
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use Doctrine\DBAL\Schema\ForeignKeyConstraint; |
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use Doctrine\DBAL\Schema\Schema; |
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use Doctrine\DBAL\Schema\SchemaException; |
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use Doctrine\DBAL\Schema\Sequence; |
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use Doctrine\DBAL\Schema\Table; |
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/** |
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* Removes assets from a schema that are not in the default namespace. |
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* |
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* Some databases such as MySQL support cross databases joins, but don't |
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* allow to call DDLs to a database from another connected database. |
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* Before a schema is serialized into SQL this visitor can cleanup schemas with |
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* non default namespaces. |
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* |
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* This visitor filters all these non-default namespaced tables and sequences |
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* and removes them from the SChema instance. |
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*/ |
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class RemoveNamespacedAssets extends AbstractVisitor |
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{ |
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/** @var Schema */ |
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private $schema; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function acceptSchema(Schema $schema) : void |
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{ |
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$this->schema = $schema; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function acceptTable(Table $table) : void |
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{ |
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if ($table->isInDefaultNamespace($this->schema->getName())) { |
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return; |
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} |
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$this->schema->dropTable($table->getName()); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function acceptSequence(Sequence $sequence) : void |
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{ |
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if ($sequence->isInDefaultNamespace($this->schema->getName())) { |
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return; |
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} |
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$this->schema->dropSequence($sequence->getName()); |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @throws SchemaException |
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*/ |
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public function acceptForeignKey(Table $localTable, ForeignKeyConstraint $fkConstraint) : void |
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{ |
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// The table may already be deleted in a previous |
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// RemoveNamespacedAssets#acceptTable call. Removing Foreign keys that |
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// point to nowhere. |
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if (! $this->schema->hasTable($fkConstraint->getForeignTableName())) { |
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$this->removeForeignKey($localTable, $fkConstraint); |
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return; |
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} |
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$foreignTable = $this->schema->getTable($fkConstraint->getForeignTableName()); |
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if ($foreignTable->isInDefaultNamespace($this->schema->getName())) { |
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return; |
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} |
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$this->removeForeignKey($localTable, $fkConstraint); |
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} |
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/** |
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* @throws SchemaException |
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*/ |
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private function removeForeignKey(Table $table, ForeignKeyConstraint $constraint) : void |
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{ |
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$name = $constraint->getName(); |
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if ($name === null) { |
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throw SchemaException::namedForeignKeyRequired($table, $constraint); |
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} |
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$table->removeForeignKey($name); |
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} |
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} |
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doctrine /
dbal
