SDO_DAS_Relational::__construct
SDO_DAS_Relational::executePreparedQuery
SDO-DAS-Relational Functions
PHP Manual

# SDO_DAS_Relational::createRootDataObject

Returns the special root object in an otherwise empty data graph. Used when creating a data graph from scratch.

### Description

SDODataObject SDO_DAS_Relational::createRootDataObject ( void )
Warning

This function is EXPERIMENTAL. The behaviour of this function, its name, and surrounding documentation may change without notice in a future release of PHP. This function should be used at your own risk.

Returns the special root object at the top of an otherwise empty data graph. This call is used when the application wants to create a data graph from scratch, without having called executeQuery to create a data graph.

The special root object has one multi-valued containment property, with a name of the application root type that was passed when the Relational DAS was constructed. The property can take values of only that type. The only thing that the application can usefully do with the root type is to call createDataObject on it, passing the name of the application root type, in order to create a data object of their own application type.

### Parameters

None.

### Return Values

The root object.

### Errors/Exceptions

None.

### Examples

Please see the Examples section in the general information about the Relational DAS for many examples of calling this method.