class CompositeExpression

Criteria.php in drupal/core/vendor/doctrine/common/lib/Doctrine/Common/Collections/Criteria.php

CriteriaTest.php in drupal/core/vendor/doctrine/common/tests/Doctrine/Tests/Common/Collections/CriteriaTest.php

ExpressionBuilder.php in drupal/core/vendor/doctrine/common/lib/Doctrine/Common/Collections/ExpressionBuilder.php

ExpressionBuilderTest.php in drupal/core/vendor/doctrine/common/tests/Doctrine/Tests/Common/Collections/ExpressionBuilderTest.php

class CompositeExpression implements Expression {
  const TYPE_AND = 'AND';
  const TYPE_OR = 'OR';
  private $type;
  private $expressions = array();
  public function __construct($type, array $expressions) {
    $this->type = $type;
    foreach ($expressions as $expr) {
      if ($expr instanceof Value) {
        throw new \RuntimeException("Values are not supported expressions as children of and/or expressions.");
      }
      if (!$expr instanceof Expression) {
        throw new \RuntimeException("No expression given to CompositeExpression.");
      }
      $this->expressions[] = $expr;
    }
  }

  /**
   * Return the list of expressions nested in this composite.
   *
   * @return Expression[]
   */
  public function getExpressionList() {
    return $this->expressions;
  }
  public function getType() {
    return $this->type;
  }
  public function visit(ExpressionVisitor $visitor) {
    return $visitor
      ->walkCompositeExpression($this);
  }

}