CRM/Core/Reference/OptionValue.php

   1 <?php
   2
   3 /**
   4  * Description of a one-way link between an option-value and an entity
   5  */
   6 class CRM_Core_Reference_OptionValue extends CRM_Core_Reference_Basic {
   7   /**
   8    * @var string option-group-name
   9    */
  10   protected $targetOptionGroupName;
  11
  12   /**
  13    * @var int|NULL null if not yet loaded
  14    */
  15   protected $targetOptionGroupId;
  16
  17   function __construct($refTable, $refKey, $targetTable = NULL, $targetKey = 'id', $optionGroupName) {
  18     parent::__construct($refTable, $refKey, $targetTable, $targetKey, NULL);
  19     $this->targetOptionGroupName = $optionGroupName;
  20   }
  21
  22   public function findReferences($targetDao) {
  23     if (! ($targetDao instanceof CRM_Core_DAO_OptionValue)) {
  24       throw new CRM_Core_Exception("Mismatched reference: expected OptionValue but received " . get_class($targetDao));
  25     }
  26     if ($targetDao->option_group_id == $this->getTargetOptionGroupId()) {
  27       return parent::findReferences($targetDao);
  28     } else {
  29       return NULL;
  30     }
  31   }
  32
  33   public function getReferenceCount($targetDao) {
  34     if (! ($targetDao instanceof CRM_Core_DAO_OptionValue)) {
  35       throw new CRM_Core_Exception("Mismatched reference: expected OptionValue but received " . get_class($targetDao));
  36     }
  37     if ($targetDao->option_group_id == $this->getTargetOptionGroupId()) {
  38       return parent::getReferenceCount($targetDao);
  39     } else {
  40       return NULL;
  41     }
  42   }
  43
  44   public function getTargetOptionGroupId() {
  45     if ($this->targetOptionGroupId === NULL) {
  46       $this->targetOptionGroupId = CRM_Core_DAO::getFieldValue('CRM_Core_DAO_OptionGroup', $this->targetOptionGroupName, 'id', 'name');
  47     }
  48     return $this->targetOptionGroupId;
  49   }
  50 }