1 <?php

     2 /*

     3  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

     4  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

     5  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

     6  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

     7  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

     8  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

     9  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

    10  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

    11  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    12  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    13  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    14  *

    15  * This software consists of voluntary contributions made by many individuals

    16  * and is licensed under the LGPL. For more information, see

    17  * <http://www.doctrine-project.org>.

    18  */

    19  

    20 namespace Doctrine\ORM\Query\AST;

    21 

    22 /**

    23  * AssociationPathExpression ::= CollectionValuedPathExpression | SingleValuedAssociationPathExpression

    24  * SingleValuedPathExpression ::= StateFieldPathExpression | SingleValuedAssociationPathExpression

    25  * StateFieldPathExpression ::= SimpleStateFieldPathExpression | SimpleStateFieldAssociationPathExpression

    26  * SingleValuedAssociationPathExpression ::= IdentificationVariable "." SingleValuedAssociationField

    27  * CollectionValuedPathExpression ::= IdentificationVariable "." CollectionValuedAssociationField

    28  * StateField ::= {EmbeddedClassStateField "."}* SimpleStateField

    29  * SimpleStateFieldPathExpression ::= IdentificationVariable "." StateField

    30  * 

    31  * @since   2.0

    32  * @author  Guilherme Blanco <guilhermeblanco@hotmail.com>

    33  * @author  Jonathan Wage <jonwage@gmail.com>

    34  * @author  Roman Borschel <roman@code-factory.org>

    35  */

    36 class PathExpression extends Node

    37 {

    38     const TYPE_COLLECTION_VALUED_ASSOCIATION = 2;

    39     const TYPE_SINGLE_VALUED_ASSOCIATION = 4;

    40     const TYPE_STATE_FIELD = 8;

    41     

    42     public $type;

    43     public $expectedType;

    44     public $identificationVariable;

    45     public $field;

    46     

    47     public function __construct($expectedType, $identificationVariable, $field = null)

    48     {

    49         $this->expectedType = $expectedType;

    50         $this->identificationVariable = $identificationVariable;

    51         $this->field = $field;

    52     }

    53     

    54     public function dispatch($walker)

    55     {

    56         return $walker->walkPathExpression($this);

    57     }

    58 }