Enhancing ICS Mappings with Custom Java Classes by Ricardo Ferreira

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Introduction

One of the most common tasks performed during the creation of integrations in ICS (Integration Cloud Service) is the implementation of mappings. In a nutshell, mappings are the resources that ICS uses to allow messages coming from the configured source application to be sent to the configured target application. Failure in properly defining and configuring these mappings directly impacts how integrations are going to behave while sending messages downstream.

In order to build mappings in ICS, users make use of the mapping editor. The mapping editor allows for the creation of complex XPath expressions via an intuitive drag-and-drop interface. Besides the support for XPath expressions, it is also possible to use built-in XSLT functions available within the Mapping Components section of the mapping editor, as shown in figure 1.

However, it is not uncommon to find situations in which the set of built-in functions is not adequate to perform a specific data handling operation. When that happens, most people using ICS feel they’ve hit a roadblock due to the fact that there is no way to simply add a custom function. While there is always the possibility to open an SR (Service Request) within Oracle and request an enhancement, sometimes this is not possible because the ongoing project requires at least a workaround in order to be able to finish the use case in a timely manner.

This blog is going to show how classes from ICS’s Fusion Middleware foundation can be leveraged to provide custom data handling in mappings. To illustrate this, the following sections will show how to perform Base64 data decoding, using a utility class from the Oracle WebLogic API.

Programming in XLST Directly

In contrast to what many people think, ICS is not a black box. You can access pretty much everything that is generated by ICS when you export the integration, as shown in figure 2. Once you have access to the integration archive file, you can see what ICS generated for you and in case of mappings, even change it. Read the complete article here.

SOA & BPM Partner Community

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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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