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<?php |
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declare(strict_types=1); |
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namespace Doctrine\DBAL\Schema; |
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use Doctrine\DBAL\Internal\DependencyOrderCalculator; |
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use Doctrine\DBAL\Platforms\AbstractPlatform; |
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use function array_merge; |
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/** |
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* Schema Diff. |
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*/ |
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class SchemaDiff |
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{ |
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/** @var Schema|null */ |
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public $fromSchema; |
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/** |
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* All added namespaces. |
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* |
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* @var array<string, string> |
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*/ |
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public $newNamespaces = []; |
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/** |
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* All removed namespaces. |
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* |
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* @var array<string, string> |
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*/ |
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public $removedNamespaces = []; |
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/** |
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* All added tables. |
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* |
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* @var array<string, Table> |
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*/ |
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public $newTables = []; |
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/** |
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* All changed tables. |
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* |
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* @var array<string, TableDiff> |
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*/ |
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public $changedTables = []; |
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/** |
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* All removed tables. |
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* |
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* @var array<string, Table> |
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*/ |
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public $removedTables = []; |
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/** @var array<int, Sequence> */ |
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public $newSequences = []; |
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/** @var array<int, Sequence> */ |
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public $changedSequences = []; |
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/** @var array<int, Sequence> */ |
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public $removedSequences = []; |
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/** @var array<string|int, ForeignKeyConstraint> */ |
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public $orphanedForeignKeys = []; |
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/** |
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* Constructs an SchemaDiff object. |
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* |
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* @param array<string, Table> $newTables |
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* @param array<string, TableDiff> $changedTables |
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* @param array<string, Table> $removedTables |
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669 |
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*/ |
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public function __construct(array $newTables = [], array $changedTables = [], array $removedTables = [], ?Schema $fromSchema = null) |
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669 |
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{ |
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$this->newTables = $newTables; |
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$this->changedTables = $changedTables; |
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$this->removedTables = $removedTables; |
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$this->fromSchema = $fromSchema; |
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} |
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/** |
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* The to save sql mode ensures that the following things don't happen: |
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* |
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* 1. Tables are deleted |
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* 2. Sequences are deleted |
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* 3. Foreign Keys which reference tables that would otherwise be deleted. |
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* |
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* This way it is ensured that assets are deleted which might not be relevant to the metadata schema at all. |
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* |
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* @return array<int, string> |
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*/ |
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public function toSaveSql(AbstractPlatform $platform) : array |
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{ |
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return $this->_toSql($platform, true); |
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} |
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/** |
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* @return array<int, string> |
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*/ |
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public function toSql(AbstractPlatform $platform) : array |
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{ |
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return $this->_toSql($platform, false); |
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} |
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/** |
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* @return array<int, string> |
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*/ |
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protected function _toSql(AbstractPlatform $platform, bool $saveMode = false) : array |
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{ |
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$sql = []; |
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if ($platform->supportsSchemas()) { |
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foreach ($this->newNamespaces as $newNamespace) { |
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$sql[] = $platform->getCreateSchemaSQL($newNamespace); |
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} |
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} |
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if ($platform->supportsForeignKeyConstraints() && $saveMode === false) { |
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foreach ($this->orphanedForeignKeys as $orphanedForeignKey) { |
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$sql[] = $platform->getDropForeignKeySQL($orphanedForeignKey, $orphanedForeignKey->getLocalTable()); |
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} |
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} |
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if ($platform->supportsSequences()) { |
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foreach ($this->changedSequences as $sequence) { |
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$sql[] = $platform->getAlterSequenceSQL($sequence); |
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} |
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if ($saveMode === false) { |
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foreach ($this->removedSequences as $sequence) { |
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$sql[] = $platform->getDropSequenceSQL($sequence); |
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} |
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} |
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foreach ($this->newSequences as $sequence) { |
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$sql[] = $platform->getCreateSequenceSQL($sequence); |
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} |
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} |
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$foreignKeySql = []; |
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$createFlags = AbstractPlatform::CREATE_INDEXES; |
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if (! $platform->supportsCreateDropForeignKeyConstraints()) { |
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$createFlags |= AbstractPlatform::CREATE_FOREIGNKEYS; |
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} |
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foreach ($this->getNewTablesSortedByDependencies() as $table) { |
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$sql = array_merge($sql, $platform->getCreateTableSQL($table, $createFlags)); |
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if (! $platform->supportsCreateDropForeignKeyConstraints()) { |
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continue; |
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} |
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foreach ($table->getForeignKeys() as $foreignKey) { |
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$foreignKeySql[] = $platform->getCreateForeignKeySQL($foreignKey, $table); |
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} |
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} |
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$sql = array_merge($sql, $foreignKeySql); |
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if ($saveMode === false) { |
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foreach ($this->removedTables as $table) { |
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$sql[] = $platform->getDropTableSQL($table); |
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} |
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} |
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foreach ($this->changedTables as $tableDiff) { |
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$sql = array_merge($sql, $platform->getAlterTableSQL($tableDiff)); |
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} |
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return $sql; |
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} |
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/** |
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* Sorts tables by dependencies so that they are created in the right order. |
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* |
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* This is necessary when one table depends on another while creating foreign key |
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* constraints directly during CREATE TABLE. |
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* |
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* @return array<Table> |
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*/ |
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private function getNewTablesSortedByDependencies() |
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{ |
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$calculator = new DependencyOrderCalculator(); |
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$newTables = []; |
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foreach ($this->newTables as $table) { |
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$newTables[$table->getName()] = true; |
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$calculator->addNode($table->getName(), $table); |
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} |
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foreach ($this->newTables as $table) { |
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foreach ($table->getForeignKeys() as $foreignKey) { |
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$foreignTableName = $foreignKey->getForeignTableName(); |
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if (! isset($newTables[$foreignTableName])) { |
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continue; |
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} |
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$calculator->addDependency($foreignTableName, $table->getName()); |
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} |
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} |
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return $calculator->sort(); |
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} |
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} |
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doctrine /
dbal
