Comparison.php

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<?php
namespace TYPO3\CMS\Extbase\Persistence\Generic\Qom;

use TYPO3\CMS\Extbase\Persistence\QueryInterface;

class Comparison implements ComparisonInterface {

    protected $operand1;

    protected $operator;

    protected $operand2;

    protected $parameterIdentifier;

    public function __construct(PropertyValueInterface $operand1, $operator, $operand2) {
        $this->operand1 = $operand1;
        $this->operator = $operator;
        $this->operand2 = $operand2;
    }

    public function getOperand1() {
        return $this->operand1;
    }

    public function getOperator() {
        $operator = $this->operator;

        if ($this->getOperand2() === NULL) {
            if ($operator === QueryInterface::OPERATOR_EQUAL_TO) {
                $operator = QueryInterface::OPERATOR_EQUAL_TO_NULL;
            } elseif ($operator === QueryInterface::OPERATOR_NOT_EQUAL_TO) {
                $operator = QueryInterface::OPERATOR_NOT_EQUAL_TO_NULL;
            }
        }

        return $operator;
    }

    public function getOperand2() {
        return $this->operand2;
    }

    public function setParameterIdentifier($parameterIdentifier) {
        $this->parameterIdentifier = $parameterIdentifier;
    }

    public function getParameterIdentifier() {
        return $this->parameterIdentifier;
    }

    public function collectBoundVariableNames(&$boundVariables) {
    }
}