Introduction to integration in Pega applications | Connectors & Services In PEGA | Integration In Pega Tutorials

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Introduction to integration in Pega applications

The integration enables your application to exchange data with other systems. For example, your application might need to access data or computations provided by an external system or respond to requests from external systems.

                    Connectors & Services In PEGA

Connectors In PEGA:

Let us consider an example as Loan process in a bank, Imagine the process of applying for a loan. First, a customer completes a loan application and submits the application to the bank. The bank enters the customer’s information into the application system. The bank then verifies the customer's credit score with a credit agency. The bank application must integrate with the credit agency system to verify the credit score.

You can invoke Connectors from data pages and activities. Use data pages to read, or pull, data from the external system. Use activities to write or push data to the external system.

How connectors exchange data

In Pega, the connector can be called from five components as

1. Data Page or Activity
2. Data Transforms
3. Connector Rule
4. Mapping Rules
5. External System

1.Data Page or Activity

Specifies the connector to use and data transforms for request and response mapping.

2.Data Transforms

Maps the data structure of your application to the integration of clipboard pages, which correspond to the format expected by the service.


3.Connector Rule

Uses the integration clipboard pages to build the request according to the protocol and service definition, invokes the service, and parses and places the response on the integration of clipboard pages.

4.Mapping Rules

For most connectors, mapping rules are used to build outgoing and parsing incoming messages.

5.External System

Exposes the service called.

Supported Connectors

Pega provides connectors for a wide range of industry-standard protocols and standards. Standard connectors include SOAP, REST, SAP, EJB, JMS, MQ, File, and CMIS.


Services In PEGA:

Services allow you to expose the data and functionality of your application to external systems. Services implement the interface of a specific protocol and provide data mapping for outbound and inbound content. You can parse, convert, and map data in either direction to or from the clipboard. Data can be in XML, fixed record structure, or separated by a delimiter character format.

How Services exchange data 

The service listener listens for incoming requests. Service listeners provide the Pega Platform with information the platform needs to route incoming messages to a specific service. The service listener establishes a requestor. A requestor is the processing and data associated with the incoming request initiated by the external system

Review the procedure for processing a request from an external system:

1. The service listener instantiates the protocol-specific service to provide communication with Pega and establish a requestor. The service listener optionally performs authentication.
2. The service parses the incoming request and maps the request onto the clipboard. The service then invokes the service activity. The service activity provides the logic for the service.
3. When your service activity is complete, control is returned to the service. The service builds the response using data on the clipboard, and the service listener sends the response to the external system.

Supported Services

Pega provides services for a wide range of industry-standard protocols and standards, including SOAP, REST, EJB, JMS, MQ, and File.