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<?php |
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namespace DataTypes; |
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use InvalidArgumentException; |
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use OutOfBoundsException; |
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/** |
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* @since 0.1 |
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* |
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* @license GPL-2.0+ |
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* @author Daniel Kinzler |
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*/ |
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class DataTypeFactory { |
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/** |
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* Associative array mapping data type identifiers to DataType objects. |
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* |
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* @var DataType[] |
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*/ |
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private $types = []; |
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/** |
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* @var string[] Associative array mapping data type identifiers to data value type identifiers. |
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*/ |
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private $valueTypes = []; |
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/** |
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* @since 0.5 |
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* |
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* @param string[] $valueTypes Associative array mapping data type identifiers (also |
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* referred to as "property types") to data value type identifiers. |
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* |
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* @throws InvalidArgumentException |
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*/ |
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public function __construct( array $valueTypes ) { |
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foreach ( $valueTypes as $typeId => $valueType ) { |
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if ( !is_string( $typeId ) || $typeId === '' |
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|| !is_string( $valueType ) || $valueType === '' |
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) { |
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throw new InvalidArgumentException( |
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'$valueTypes must be an associative array of non-empty strings' |
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); |
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} |
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} |
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$this->valueTypes = $valueTypes; |
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} |
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/** |
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* @since 0.1 |
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* |
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* @param DataType[] $dataTypes |
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* |
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* @return self |
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*/ |
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public static function newFromTypes( array $dataTypes ) { |
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$factory = new self( [] ); |
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foreach ( $dataTypes as $dataType ) { |
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$factory->registerDataType( $dataType ); |
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} |
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return $factory; |
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} |
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/** |
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* @since 0.1 |
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* |
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* @param DataType $dataType |
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*/ |
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public function registerDataType( DataType $dataType ) { |
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$this->types[$dataType->getId()] = $dataType; |
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} |
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/** |
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* Returns the list of registered data type identifiers (also referred to as "property types"). |
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* |
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* @since 0.1 |
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* |
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* @return string[] |
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*/ |
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public function getTypeIds() { |
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return array_keys( $this->valueTypes ); |
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} |
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/** |
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* Returns the data type that has the specified type identifier. |
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* Types may be instantiated on the fly using a type builder spec. |
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* |
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* @since 0.1 |
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* |
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* @param string $typeId Data type identifier (also referred to as "property type"). |
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* |
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* @throws OutOfBoundsException if the requested type is not known. |
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* @return DataType |
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*/ |
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public function getType( $typeId ) { |
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if ( !array_key_exists( $typeId, $this->types ) ) { |
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if ( !array_key_exists( $typeId, $this->valueTypes ) ) { |
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throw new OutOfBoundsException( "Unknown data type '$typeId'" ); |
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} |
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$valueType = $this->valueTypes[$typeId]; |
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$this->types[$typeId] = new DataType( $typeId, $valueType ); |
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} |
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return $this->types[$typeId]; |
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} |
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/** |
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* Returns all data types in an associative array with |
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* the keys being data type identifiers (also referred to as "property types") pointing to their |
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* corresponding data type. |
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* |
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* @since 0.1 |
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* |
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* @return DataType[] |
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*/ |
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public function getTypes() { |
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$types = []; |
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foreach ( $this->getTypeIds() as $typeId ) { |
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$types[$typeId] = $this->getType( $typeId ); |
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} |
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return $types; |
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} |
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} |
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131
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|
wmde /
DataTypes
