Implement Pagination in REST Service: Integration Cloud by Ankur Jain

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There are situations in which we need to fetch a large number of records from the on-premise application in the Integration Cloud. For example, there are 100k+ records resides in the on-premise database table which we need to fetch and expose them into the REST service response. In this particular scenario, we are considering the database is installed behind the firewall. So to communicate with the on-premise application, connectivity agent is required. Connectivity agent has some limitation in which agent can parse payload of 10MB only for a single request. Exceeding the limit may cause stack overflow error in the agent which may bring the agent down.

So to handle a large volume of data from the on-premise application, we have to keep this limitation in mind and implement the solution accordingly. There might be multiple ways to handle such a situation. Here I’m gonna to handle this situation by implementing the pagination into the REST service which will fetch the data into the chunk.

To complete this article we should have below

  • Oracle Database 12c
  • Oracle Integration Cloud instance
  • Connectivity agent installed

Read the complete article here.

 

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Technorati Tags: SOA Community,Oracle SOA,Oracle BPM,OPN,Jürgen Kress

About Jürgen Kress
As a middleware expert Jürgen works at Oracle EMEA Alliances and Channels, responsible for Oracle’s EMEA Fusion Middleware partner business. He is the founder of the Oracle SOA & BPM and the WebLogic Partner Communities and the global Oracle Partner Advisory Councils. With more than 5000 members from all over the world the Middleware Partner Community is the most successful and active community at Oracle. Jürgen manages the community with monthly newsletters, webcasts and conferences. He hosts his annual Fusion Middleware Partner Community Forums and the Fusion Middleware Summer Camps, where more than 200 partners get product updates, roadmap insights and hands-on trainings. Supplemented by many web 2.0 tools like twitter, discussion forums, online communities, blogs and wikis. For the SOA & Cloud Symposium by Thomas Erl, Jürgen is a member of the steering board. He is also a frequent speaker at conferences like the SOA & BPM Integration Days, JAX, UKOUG, OUGN, or OOP.

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