class Comparison

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 Comparison implements Expression {
  const EQ = '=';
  const NEQ = '<>';
  const LT = '<';
  const LTE = '<=';
  const GT = '>';
  const GTE = '>=';
  const IS = 'IS';
  const IN = 'IN';
  const NIN = 'NIN';
  private $field;
  private $op;
  private $value;
  public function __construct($field, $operator, $value) {
    if (!$value instanceof Value) {
      $value = new Value($value);
    }
    $this->field = $field;
    $this->op = $operator;
    $this->value = $value;
  }
  public function getField() {
    return $this->field;
  }
  public function getValue() {
    return $this->value;
  }
  public function getOperator() {
    return $this->op;
  }
  public function visit(ExpressionVisitor $visitor) {
    return $visitor
      ->walkComparison($this);
  }

}