SDO_DAS_Relational::applyChanges
SDO_DAS_Relational::createRootDataObject
SDO-DAS-Relational Functions
PHP Manual

# SDO_DAS_Relational::__construct

(^)

SDO_DAS_Relational::__construct — Creates an instance of a Relational Data Access Service

### Descripción

SDO_DAS_Relational SDO_DAS_Relational::__construct ( array `$database_metadata` [, string `$application_root_type` [, array `$SDO_containment_references_metadata` ]] )
Warning

Esta función es EXPERIMENTAL. Esto significa que el comportamiento de esta función, el nombre de esta función y en definitiva TODO lo documentado sobre esta función, puede cambiar en una futura version de PHP SIN AVISO. La advertencia queda hecha, y utilizar esta extensión queda bajo su propia responsabilidad.

Constructs an instance of a Relational Data Access Service from the passed metadata.

### Lista de parámetros

database_metadata

  An array containing one or more table definitions, each of which is an associative array containing the keys name, columns, PK, and optionally, FK. For a full discussion of the metadata, see the metadata section in the general information about the Relational DAS.

application_root_type

  The root of each data graph is an object of a special root type and the application data objects come below that. Of the various application types in the SDO model, one has to be the the application type immediately below the root of the data graph. If there is only one table in the database metadata, so the application root type can be inferred, this argument can be omitted.

SDO_containment_references_metadata

  An array containing one or more definitions of a containment relation, each of which is an associative array containing the keys parent and child. The containment relations describe how the types in the model are connected to form a tree. The type specified as the application root type must be present as one of the parent types in the containment references. If the application only needs to work with one table at a time, and there are no containment relations in the model, this argument can be omitted. For a full discussion of the metadata, see the metadata section in the general information about the Relational DAS.

### Valores retornados

Returns an SDO_DAS_Relational object on success.

### Errors/Exceptions

SDO_DAS_Relational::__construct() throws a SDO_DAS_Relational_Exception if any problems are found in the metadata.

### Ejemplos

For a full discussion of the metadata, see the metadata section in the general information about the Relational DAS.

SDO_DAS_Relational::applyChanges
SDO_DAS_Relational::createRootDataObject
SDO-DAS-Relational Functions
PHP Manual