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<?php |
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namespace Doctrine\DBAL\Schema; |
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use Doctrine\DBAL\Platforms\AbstractPlatform; |
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use function array_keys; |
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use function array_map; |
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use function in_array; |
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use function strrpos; |
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use function strtolower; |
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use function strtoupper; |
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use function substr; |
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/** |
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* An abstraction class for a foreign key constraint. |
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*/ |
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class ForeignKeyConstraint extends AbstractAsset implements Constraint |
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{ |
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/** |
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* Instance of the referencing table the foreign key constraint is associated with. |
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* |
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* @var Table |
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*/ |
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protected $_localTable; |
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/** |
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* Asset identifier instances of the referencing table column names the foreign key constraint is associated with. |
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* array($columnName => Identifier) |
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* |
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* @var Identifier[] |
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*/ |
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protected $_localColumnNames; |
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/** |
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* Table or asset identifier instance of the referenced table name the foreign key constraint is associated with. |
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* |
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* @var Table|Identifier |
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*/ |
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protected $_foreignTableName; |
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/** |
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* Asset identifier instances of the referenced table column names the foreign key constraint is associated with. |
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* array($columnName => Identifier) |
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* |
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* @var Identifier[] |
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*/ |
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protected $_foreignColumnNames; |
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/** |
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* Options associated with the foreign key constraint. |
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* |
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* @var mixed[] |
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*/ |
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protected $_options; |
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/** |
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* Initializes the foreign key constraint. |
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* |
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* @param string[] $localColumnNames Names of the referencing table columns. |
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* @param Table|string $foreignTableName Referenced table. |
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* @param string[] $foreignColumnNames Names of the referenced table columns. |
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* @param string|null $name Name of the foreign key constraint. |
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* @param mixed[] $options Options associated with the foreign key constraint. |
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*/ |
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public function __construct(array $localColumnNames, $foreignTableName, array $foreignColumnNames, $name = null, array $options = []) |
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{ |
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$this->_setName($name); |
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$this->_localColumnNames = $this->createIdentifierMap($localColumnNames); |
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if ($foreignTableName instanceof Table) { |
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$this->_foreignTableName = $foreignTableName; |
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} else { |
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$this->_foreignTableName = new Identifier($foreignTableName); |
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} |
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$this->_foreignColumnNames = $this->createIdentifierMap($foreignColumnNames); |
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$this->_options = $options; |
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} |
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/** |
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* @param string[] $names |
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* |
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* @return Identifier[] |
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*/ |
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private function createIdentifierMap(array $names) : array |
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{ |
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$identifiers = []; |
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foreach ($names as $name) { |
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$identifiers[$name] = new Identifier($name); |
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} |
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return $identifiers; |
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} |
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/** |
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* Returns the name of the referencing table |
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* the foreign key constraint is associated with. |
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* |
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* @return string |
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*/ |
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public function getLocalTableName() |
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{ |
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return $this->_localTable->getName(); |
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} |
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/** |
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* Sets the Table instance of the referencing table |
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* the foreign key constraint is associated with. |
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* |
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* @param Table $table Instance of the referencing table. |
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* |
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* @return void |
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*/ |
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public function setLocalTable(Table $table) |
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{ |
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$this->_localTable = $table; |
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} |
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/** |
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* @return Table |
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*/ |
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public function getLocalTable() |
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{ |
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return $this->_localTable; |
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} |
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/** |
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* Returns the names of the referencing table columns |
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* the foreign key constraint is associated with. |
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* |
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* @return string[] |
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*/ |
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public function getLocalColumns() |
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{ |
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return array_keys($this->_localColumnNames); |
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} |
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/** |
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* Returns the quoted representation of the referencing table column names |
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* the foreign key constraint is associated with. |
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* |
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* But only if they were defined with one or the referencing table column name |
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* is a keyword reserved by the platform. |
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* Otherwise the plain unquoted value as inserted is returned. |
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* |
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* @param AbstractPlatform $platform The platform to use for quotation. |
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* |
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* @return string[] |
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*/ |
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public function getQuotedLocalColumns(AbstractPlatform $platform) |
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{ |
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$columns = []; |
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foreach ($this->_localColumnNames as $column) { |
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$columns[] = $column->getQuotedName($platform); |
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} |
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return $columns; |
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} |
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/** |
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* Returns unquoted representation of local table column names for comparison with other FK |
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* |
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* @return string[] |
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*/ |
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public function getUnquotedLocalColumns() |
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{ |
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return array_map([$this, 'trimQuotes'], $this->getLocalColumns()); |
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} |
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/** |
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* Returns unquoted representation of foreign table column names for comparison with other FK |
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* |
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* @return string[] |
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*/ |
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public function getUnquotedForeignColumns() |
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{ |
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return array_map([$this, 'trimQuotes'], $this->getForeignColumns()); |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @see getLocalColumns |
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*/ |
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public function getColumns() |
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{ |
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return $this->getLocalColumns(); |
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} |
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/** |
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* Returns the quoted representation of the referencing table column names |
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* the foreign key constraint is associated with. |
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* |
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* But only if they were defined with one or the referencing table column name |
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* is a keyword reserved by the platform. |
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* Otherwise the plain unquoted value as inserted is returned. |
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* |
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* @see getQuotedLocalColumns |
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* |
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* @param AbstractPlatform $platform The platform to use for quotation. |
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* |
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* @return string[] |
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*/ |
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public function getQuotedColumns(AbstractPlatform $platform) |
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{ |
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return $this->getQuotedLocalColumns($platform); |
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} |
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/** |
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* Returns the name of the referenced table |
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* the foreign key constraint is associated with. |
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* |
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* @return string |
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*/ |
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public function getForeignTableName() |
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{ |
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return $this->_foreignTableName->getName(); |
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} |
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/** |
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* Returns the non-schema qualified foreign table name. |
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* |
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* @return string |
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*/ |
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public function getUnqualifiedForeignTableName() |
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{ |
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$name = $this->_foreignTableName->getName(); |
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$position = strrpos($name, '.'); |
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if ($position !== false) { |
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$name = substr($name, $position); |
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} |
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return strtolower($name); |
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} |
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/** |
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* Returns the quoted representation of the referenced table name |
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* the foreign key constraint is associated with. |
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* |
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* But only if it was defined with one or the referenced table name |
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* is a keyword reserved by the platform. |
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* Otherwise the plain unquoted value as inserted is returned. |
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* |
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* @param AbstractPlatform $platform The platform to use for quotation. |
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* |
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* @return string |
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*/ |
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public function getQuotedForeignTableName(AbstractPlatform $platform) |
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{ |
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return $this->_foreignTableName->getQuotedName($platform); |
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} |
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/** |
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* Returns the names of the referenced table columns |
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* the foreign key constraint is associated with. |
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* |
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* @return string[] |
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*/ |
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public function getForeignColumns() |
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{ |
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return array_keys($this->_foreignColumnNames); |
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} |
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/** |
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* Returns the quoted representation of the referenced table column names |
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* the foreign key constraint is associated with. |
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* |
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* But only if they were defined with one or the referenced table column name |
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* is a keyword reserved by the platform. |
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* Otherwise the plain unquoted value as inserted is returned. |
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* |
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* @param AbstractPlatform $platform The platform to use for quotation. |
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* |
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* @return string[] |
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*/ |
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public function getQuotedForeignColumns(AbstractPlatform $platform) |
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{ |
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$columns = []; |
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foreach ($this->_foreignColumnNames as $column) { |
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$columns[] = $column->getQuotedName($platform); |
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} |
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return $columns; |
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} |
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/** |
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* Returns whether or not a given option |
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* is associated with the foreign key constraint. |
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* |
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* @param string $name Name of the option to check. |
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* |
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* @return bool |
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*/ |
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public function hasOption($name) |
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{ |
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return isset($this->_options[$name]); |
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} |
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/** |
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* Returns an option associated with the foreign key constraint. |
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* |
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* @param string $name Name of the option the foreign key constraint is associated with. |
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* |
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* @return mixed |
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*/ |
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public function getOption($name) |
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{ |
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return $this->_options[$name]; |
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} |
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/** |
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* Returns the options associated with the foreign key constraint. |
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* |
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* @return mixed[] |
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*/ |
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public function getOptions() |
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{ |
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return $this->_options; |
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} |
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/** |
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* Returns the referential action for UPDATE operations |
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* on the referenced table the foreign key constraint is associated with. |
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* |
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* @return string|null |
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*/ |
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public function onUpdate() |
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{ |
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return $this->onEvent('onUpdate'); |
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} |
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/** |
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* Returns the referential action for DELETE operations |
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* on the referenced table the foreign key constraint is associated with. |
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* |
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* @return string|null |
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*/ |
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public function onDelete() |
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{ |
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return $this->onEvent('onDelete'); |
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} |
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/** |
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* Returns the referential action for a given database operation |
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* on the referenced table the foreign key constraint is associated with. |
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* |
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* @param string $event Name of the database operation/event to return the referential action for. |
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* |
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* @return string|null |
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*/ |
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private function onEvent($event) |
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{ |
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if (isset($this->_options[$event])) { |
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$onEvent = strtoupper($this->_options[$event]); |
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if (! in_array($onEvent, ['NO ACTION', 'RESTRICT'])) { |
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return $onEvent; |
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} |
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} |
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442 |
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return false; |
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442 |
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} |
368
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/** |
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* Checks whether this foreign key constraint intersects the given index columns. |
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* |
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* Returns `true` if at least one of this foreign key's local columns |
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* matches one of the given index's columns, `false` otherwise. |
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* |
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* @param Index $index The index to be checked against. |
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* |
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* @return bool |
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*/ |
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public function intersectsIndexColumns(Index $index) |
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{ |
381
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foreach ($index->getColumns() as $indexColumn) { |
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foreach ($this->_localColumnNames as $localColumn) { |
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if (strtolower($indexColumn) === strtolower($localColumn->getName())) { |
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return true; |
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} |
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} |
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} |
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return false; |
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} |
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} |
392
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