public function InvalidationBase::validateExpression in Purge 8.3

Validate the expression given to the invalidation during instantiation.

Throws

\Drupal\purge\Plugin\Purge\Invalidation\Exception\MissingExpressionException Thrown when plugin defined expression_required = TRUE and when it is instantiated without expression (NULL).

\Drupal\purge\Plugin\Purge\Invalidation\Exception\InvalidExpressionException Exception thrown when plugin got instantiated with an expression that is not deemed valid for the type of invalidation.

Overrides InvalidationInterface::validateExpression

File

src/Plugin/Purge/Invalidation/InvalidationBase.php, line 154

Class

InvalidationBase: Provides base implementations for the invalidation object.

Namespace

Drupal\purge\Plugin\Purge\Invalidation

Code

public function validateExpression() {
  $d = $this
    ->getPluginDefinition();
  $type = strtolower($d['label']);
  if ($d['expression_required'] && is_null($this->expression)) {
    throw new MissingExpressionException(sprintf("Argument required for %s invalidation.", $type));
  }
  elseif ($d['expression_required'] && empty($this->expression) && !$d['expression_can_be_empty']) {
    throw new InvalidExpressionException(sprintf("Argument required for %s invalidation.", $type));
  }
  elseif (!$d['expression_required'] && !is_null($this->expression)) {
    throw new InvalidExpressionException(sprintf("Argument given for %s invalidation.", $type));
  }
  elseif (!is_null($this->expression) && !is_string($this->expression) && $d['expression_must_be_string']) {
    throw new InvalidExpressionException(sprintf("String argument required for %s invalidation.", $type));
  }
}

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