Compare page versions via Confluence java class

[Holger Schimanski]

Does anyone know, what Java class is used in Confluence Server to create the layout when comparing to different versions of a page?

I am thinking about some ideas to improve this layout by a custom plugin. 

Best regards
Holger

[Tobias Anstett _K15t_]

Hi Holger,

The diff uses the diffpagesbyversion.action which is implemented by com.atlassian.confluence.pages.actions.DiffPagesByVersionAction

This class is mapped in xwork.xml

<action name="diffpagesbyversion" class="com.atlassian.confluence.pages.actions.DiffPagesByVersionAction">
 <result name="error" type="velocity">/pages/viewpreviousversions.vm</result>
 <result name="input" type="velocity">/pages/viewpreviousversions.vm</result>
 <result name="success" type="velocity">/pages/diffpages.vm</result>
</action>

You can overload the action to use different velocity files to output your content.

Under the hood Confluence is using DaisyDiff. 

Hope this helps you to get started.

Best, Tobias