/**
* Tells whether a spefic IDocument instance is considered equal to an other given IDocument.
*
* @param IDocument $other
*
* @return boolean
*/
public function isEqualTo(IDocument $other)
{
$is_equal = true;
if ($other->getModule() !== $this->getModule()) {
throw new Error\BadValueException("Only IDocument instances of the same module may be compared.");
}
foreach ($this->getModule()->getFields() as $field) {
$lefthand_value = $this->getValue($field->getName(), false);
$righthand_value = $other->getValue($field->getName(), false);
if (!$lefthand_value->isEqualTo($righthand_value)) {
$is_equal = false;
break;
}
}
return $is_equal;
}
/**
* Sets either given default value or value from option to the given field.
*
* @param Document $document the document to modify
* @param string $fieldname the name of the field to set a value for
* @param mixed $default_value Default value to set.
* @param array $options Array containing a `fieldname => $mixed` entry.
* $mixed is set as value instead of $default_value.
* If $mixed is a closure it will be called and used.
* $mixed may also be another callable like an array
* `array($class, "$methodName")` or a string like
* `'Your\Namespace\Foo::getStaticTrololo'`.
*
* @return void
*/
protected function setValue(IDocument $document, IField $field, $default_value, array $options = array())
{
$fieldname = $field->getName();
$fieldoptions = array();
if (!empty($options[self::OPTION_FIELD_VALUES]) && is_array($options[self::OPTION_FIELD_VALUES])) {
$fieldoptions = $options[self::OPTION_FIELD_VALUES];
}
if (empty($fieldoptions[$fieldname])) {
$document->setValue($fieldname, $default_value);
} else {
$option = $fieldoptions[$fieldname];
if (is_callable($option)) {
$document->setValue($fieldname, call_user_func($option));
} else {
$document->setValue($fieldname, $option);
}
}
}
