topic Re: Another transformer conflicts with OpenOffice in Alfresco Archive

Another transformer conflicts with OpenOffice

swithun — Mon, 23 Aug 2010 16:32:32 GMT

I have developed a transform action, which will 'transform' any document into an XML document containing technical metadata (see the fitsinalfresco project on AlfrescoForge). This works fine (no errors in the log). But I found that it is now preventing OpenOffice from being used to transform documen

Re: Another transformer conflicts with OpenOffice

swithun — Thu, 26 Aug 2010 11:59:46 GMT

I seem to have fixed this. Before, my isTransformable method just returned true for everything. By only returning true if the target mimetype is for XML, this stops my custom transformer from overriding OpenOffice.

public boolean isTransformable(String sourceMimetype, String targetMimetype, TransformationOptions options)
     {
        return targetMimetype.equals(MimetypeMap.MIMETYPE_XML);
     }
‍‍‍‍‍

This works for the moment. But if I have another bit of code that transforms files to XML, then how could I choose between the two transformers?

Ideally, my first transformer would not be a transformer, as it generates a document containing technical metadata about the first document, rather than being a more normal transform. I couldn't find another kind of action that would give me a target node into which I could dump output from an action. Is there a better choice of action?

Re: Another transformer conflicts with OpenOffice

mrogers — Thu, 26 Aug 2010 13:16:40 GMT

Perhaps you should be creating renditions rather than using the transformation framework.

Or you could just have two actions. Convert to A, Convert to B. that are kicked off either manually or automatically ?

It sounds like you are abusing the transformation framework which should be used for converstion between different mime types.

Does your source document change from time to time and if it does what do you expect to happen?