Creating an Object Relationship Model (SAP Library

Creating an Object Relationship Model

Prerequisites

The object type of an object involved with a relationship must be created in a repository (business object repository or class library).

Note

If the the old relationship service has already been integrated in your application, you can create the old model data to a new model, choose the Migration of old model data symbol.

Procedure

Note

Do not extend or re-use roles without first contacting those persons responsible.

Call the transaction SOBL_MODEL.
If you are not in change mode, choose .

Creating role types

In the dialog structure, execute the role types entry by double-clicking.

To create a new role type, choose New Entries. To change a role type, select it from the list by double-clicking.

Perform the following settings:

Name and desciption of the role type (the name of a role type serves as a key and can no longer be changed)

Indicator stating whether the role type should be non-persistent or persistent (also see Persistent roles.)

If necessary, the corresponding role type from a relationship model that was used before SAP Technology Release 6.10.

Choose and .

Assign object types to role types

In the list of role types, select the entry to which you want to assign object types.

In the dialog structure, execute the object types to role types entry by double-clicking.

To assign new object types, choose New Entries. To change an assignment, select it from the list by double-clicking.

Perform the following settings:

The role type that you selected.
The object type with objects that can take this role type in a relationship.
The repository in which the object type was created.
If necessary, the corresponding object type from a relationship model that was created before SAP Technology Release 6.10.

Choose and .

Creating relationship types

In the dialog structure, execute the relationship types entry by double-clicking.

To create a new relationship type, choose New Entries. To change a relationship type, select it from the list by double-clicking.

Perform the following settings:

Name of the relationship type
Both role types that are to be related (A and B)
The cardinality with which the relationships can occur (that is, how many object instances in the relevant role can be related with the object instances in the related role).
Table in which the relationship records should be saved at runtime
Name of the person who is responsible for relationships of this type
Description of the significance of the relationship (there you can differentiate the direction in which the relationship is seen)
If necessary, the corresponding relationship type from a relationship model that was used before SAP Technology Release 6.10.

Choose and .

Assigning application-specific attributes

If you additionally use application-specific attributes for relationships of a type, proceed as follows:

In the list of relationship types, select the entry to which you want to assign relationship types.

In the dialog structure, execute the relationship attributes entry by double-clicking.

To create a new relationship attribute, choose New Entries. To change a relationship attribute, select it from the list by double-clicking.

Perform the following settings:

Name of the attribute

Class in which the attribute is encapsulated (the class must be persistent and have implemented the IF_BINREL_PROP_CA interface.) For more information, see Application-Specific Attributes for Relationships.

Name of the person who is responsible for relationships of this type.

Choose and .

Example

Flight model with transit flights and connecting flights:

Model parameter	Value
Role type	TRANSIT, CONNECT, non-persistent role types
Object type for role type	SFLIGHT (for TRANSIT and CONNECT)
Relationship type	FLIGHTCONN , Application table SFLIBREL , Attributes available Semantics: Has connecting flight, is connecting flight of
Relationship attribute	TRANSPASS, table type attribute, which is encapsulated in the CL_OBL_EXMPL_TRANSPASS class VIAPROP , flat attribute, which is encapsulated in the CL_OBL_EXMPL_PVIA class
Archiving object	SOBL_SFLIG