CerPresetFinder.inc in Corresponding Entity References 7.3

File

includes/CerPresetFinder.inc

<?php

/**
 * This class is a unified way for CER to find the presets that apply to a given
 * entity. The result set is segmented into two parts: presets where the entity
 * is on the left side, and bidirectional presets with the entity on the right
 * side (i.e., the ones which need to be inverted before use). The execute()
 * method will return a merged and sorted array of presets, but the segmented
 * result set is exposed to the world as well for other uses (i.e., CER Entity
 * Settings' selection handler).
 */
class CerPresetFinder extends EntityFieldQuery {
  public $result = array();
  protected $entity;
  public function __construct(EntityDrupalWrapper $entity = NULL) {
    $this->entity = $entity;
    $this
      ->entityCondition('entity_type', 'cer')
      ->addTag('cer_presets')
      ->addMetaData('entity', $entity);
  }
  public function execute() {
    $lineage = $this->entity->cer->lineage
      ->value();
    $this->result['cer'] = $this
      ->fieldCondition('cer_enabled', 'value', TRUE)
      ->fieldCondition('cer_left', 'path', $lineage, 'STARTS_WITH')
      ->_load(parent::execute());
    $this->fieldConditions = array();
    $this->result['cer__invert'] = $this
      ->fieldCondition('cer_enabled', 'value', TRUE)
      ->fieldCondition('cer_bidirectional', 'value', TRUE)
      ->fieldCondition('cer_right', 'path', $lineage, 'STARTS_WITH')
      ->_load(parent::execute());
    $result = $this->result['cer'];
    foreach ($this->result['cer__invert'] as $preset) {
      $result[] = $preset
        ->invert();
    }
    usort($result, array(
      $this,
      '_sort',
    ));
    return $result;
  }

  /**
   * @return EntityFieldQuery
   */
  public function find($left = NULL, $right = NULL, $bidirectional = NULL, $operator = 'STARTS_WITH') {
    $query = new EntityFieldQuery();
    if ($left) {
      $query
        ->fieldCondition('cer_left', 'path', $left, $operator);
    }
    if ($right) {
      $query
        ->fieldCondition('cer_right', 'path', $right, $operator);
    }
    if (isset($bidirectional)) {
      $query
        ->fieldCondition('cer_bidirectional', 'value', (bool) $bidirectional);
    }
    return $query
      ->entityCondition('entity_type', 'cer')
      ->fieldCondition('cer_enabled', 'value', TRUE);
  }
  private function _load(array $result) {
    return isset($result['cer']) ? entity_load('cer', array_keys($result['cer'])) : array();
  }
  private function _sort(CerPreset $a, CerPreset $b) {
    $a_weight = $a->wrapper->cer_weight
      ->value();
    $b_weight = $b->wrapper->cer_weight
      ->value();
    if ($a_weight > $b_weight) {
      return 1;
    }
    elseif ($b_weight > $a_weight) {
      return -1;
    }
    else {
      return 0;
    }
  }

}

Classes

Name	Description
CerPresetFinder	This class is a unified way for CER to find the presets that apply to a given entity. The result set is segmented into two parts: presets where the entity is on the left side, and bidirectional presets with the entity on the right side (i.e., the ones…