Cognos Integration with Liferay Portal.

There are two easiest way from which we can achieve this things.

1. IFrame
2. WSRP

1. IFrames:

• This is one of the easier options
• It is very useful when you have lots of things to expose or to display third party data.
• It provides loose-coupling between Portal and Cognos so as reports change the Portal doesn't need to change

Implementation way:

• The portlet will be accessible to logged in user only. Either This portlet has been developed as a custom portlet using Plugins-SDK or OOB Iframe portlet.
• To display third party data in iframe so used iFrame to achieve this functionality. The information is being fetched by the web services.
• Using Iframe in cognos-integration-portlet makes it possible to embed another HTML page inside the current page.  
• Furthermore the user can navigate through the embedded page without loosing the context of the portal page.

The configurations for this portlet are stored in portlet.properties file under WEB-INF/src folder. Here is a reference of the same:

cognos.page.targeturl =
cognos.graphic.format=


2. WSRP:

• You can expose cognos portlets running on a WebSphere server as a WSRP (Web Services for Remote Portlets) producer.
• In your portal, you can consume the cognos portlets via the OOB WSRP portlet .
• This provides a good level of decoupling because the Cognos portlets can run on a separate WAS server from your Portal server.

That's it!!:)