/**
* {@inheritDoc}
*/
public function walkComparison(Comparison $comparison)
{
if (!isset($this->queryAliases[0])) {
throw new QueryException('No aliases are set before invoking walkComparison().');
}
$field = $this->queryAliases[0] . '.' . $comparison->getField();
foreach ($this->queryAliases as $alias) {
if (strpos($comparison->getField() . '.', $alias . '.') === 0) {
$field = $comparison->getField();
break;
}
}
$parameterName = str_replace('.', '_', $comparison->getField());
foreach ($this->parameters as $parameter) {
if ($parameter->getName() === $parameterName) {
$parameterName .= '_' . count($this->parameters);
break;
}
}
$parameter = new Parameter($parameterName, $this->walkValue($comparison->getValue()));
$placeholder = ':' . $parameterName;
switch ($comparison->getOperator()) {
case Comparison::IN:
$this->parameters[] = $parameter;
return $this->expr->in($field, $placeholder);
case Comparison::NIN:
$this->parameters[] = $parameter;
return $this->expr->notIn($field, $placeholder);
case Comparison::EQ:
case Comparison::IS:
if ($this->walkValue($comparison->getValue()) === null) {
return $this->expr->isNull($field);
}
$this->parameters[] = $parameter;
return $this->expr->eq($field, $placeholder);
case Comparison::NEQ:
if ($this->walkValue($comparison->getValue()) === null) {
return $this->expr->isNotNull($field);
}
$this->parameters[] = $parameter;
return $this->expr->neq($field, $placeholder);
case Comparison::CONTAINS:
$parameter->setValue('%' . $parameter->getValue() . '%', $parameter->getType());
$this->parameters[] = $parameter;
return $this->expr->like($field, $placeholder);
default:
$operator = self::convertComparisonOperator($comparison->getOperator());
if ($operator) {
$this->parameters[] = $parameter;
return new Expr\Comparison($field, $operator, $placeholder);
}
throw new \RuntimeException("Unknown comparison operator: " . $comparison->getOperator());
}
}
/**
* Adds parameter to collection and removes all other parameters with same name.
*
* @param ArrayCollection $parameters
* @param Parameter $newParameter
*/
protected function addOrReplaceParameter(ArrayCollection $parameters, Parameter $newParameter)
{
$removeParameters = [];
/** @var Parameter $parameter */
foreach ($parameters->getValues() as $parameter) {
if ($parameter->getName() === $newParameter->getName()) {
$removeParameters[] = $parameter;
}
}
foreach ($removeParameters as $removeParameter) {
$parameters->removeElement($removeParameter);
}
$parameters->add($newParameter);
}
/**
* Converts a query parameter to an array.
*
* @param Parameter $parameter The query parameter
*
* @return array The array representation of the parameter
*/
private function parameterToArray(Parameter $parameter)
{
return array($parameter->getName(), $parameter->getType(), $parameter->getValue());
}
