Functions and Queries
Once a connection to an EIS has been established, interaction between the client application and the back end can take place. Depending on the requirements of application to be using the connector, or for which you are writing a connector, you need to call or implement the appropriate interfaces of the connector framework.
Functions - IInteractionSpec
For executing functions, the connector framework IInteractionSpec is the main extension of the JCA Interaction. In addition to inheriting from the JCA interfaces, IinteractionSpec adds methods for obtaining metadata on all Interaction properties, getting and setting property values, and retrieving metadata on an IInteractionSpec .
Object Model and Query Execution
The most important extension of the JCA standard in the connector framework is the ability to obtain an object model from the EIS, thus enabling query execution.
Obtaining an Object Model
Support for an object model, for example, tables in an RDBMS, demands the implementation of the related connector framework packages for exposing, hierarchically, the metadata on the business objects and business object relations. See the details in the Javadoc references of the primary packages:
com.sapportals.connector.metadata.primitives
com.sapportals.connector.metadata.operators
com.sapportals.connector.metadata.relations
Business objects are comprised of their attributes and relations. After defining the primitives and operations of the business objects, operations can be performed on them.
For more information, see Running a Function/Query .