/**
* Processes a field of a relation model
* @param string $name Name of the field
* @param zibo\library\database\manipulation\expression\TableExpression $table Table expression for the field
* @param boolean $inCondition Flag to see whether the provided expression is used in a condition or not
* @return zibo\library\database\manipulation\expression\FieldExpression
*/
private function processRelationFieldExpression($name, TableExpression $table, $inCondition)
{
$tableName = $table->getName();
try {
$field = $this->meta->getField($tableName);
} catch (OrmException $e) {
if (!isset($this->tables[$tableName])) {
throw new OrmParseException('Table ' . $tableName . ' is not added to the query');
}
return new FieldExpression($name, $this->tables[$tableName], $tableName . self::ALIAS_SEPARATOR . $name);
}
$isRelationField = $field instanceof RelationField;
if ($isRelationField) {
$this->addFieldJoin($field);
}
$relationModel = $this->meta->getRelationModel($tableName);
$relationField = $relationModel->getMeta()->getField($name);
if ($relationField->isLocalized()) {
$table = $this->meta->getRelationLocalizedTable($tableName);
if ($inCondition && $isRelationField) {
$joinCondition = $this->createLocalizeCondition($this->meta->getRelationTable($tableName), $table);
$join = new JoinExpression(JoinExpression::TYPE_LEFT, $table, $joinCondition);
$this->addConditionJoin($join);
}
} else {
$table = new TableExpression($relationModel->getName(), $tableName);
}
return new FieldExpression($name, $table, $tableName . self::ALIAS_SEPARATOR . $name);
}
/**
* Creates a data object for relation data
* @param string $fieldName Name of the relation field
* @return mixed Empty data object
*/
private function createData($fieldName)
{
try {
if (!array_key_exists($fieldName, $this->modelData)) {
$relationModel = $this->meta->getRelationModel($fieldName);
$this->modelData[$fieldName] = $relationModel->createData(false);
}
$data = clone $this->modelData[$fieldName];
} catch (Exception $e) {
$data = new Data();
}
return $data;
}
