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PODocument processing in Liferay portal
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  1. PODocument processing in Liferay portal
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    copied!<p>I've been using Liferay a lot for past 2 years, but I have never needed any extensive document management.</p> <p>Now I have a portlet where users upload documents (MS office OLE2 documents, ODS documents, PDF etc.) and I have to persist them with all metadata available. </p> <p>I know how would I do that without using Liferay, I'd probably use Apache solr with Apache Tika (<a href="http://wiki.apache.org/solr/UpdateRichDocuments" rel="nofollow">UpdateRichDocuments</a> and <a href="http://wiki.apache.org/solr/ExtractingRequestHandler" rel="nofollow">ExtractingRequestHandler</a>) or Apache Jackrabbit that are using Apache Tika under the hood (org.apache.jackrabbit.extractor.*).</p> <p>The problem is, that If I look at the trunk of Liferay, there are some key classes :</p> <p><code>Hooks (JCRHook, FileSystemHook, CMISHook, s3Hook)</code> that are employed from within <code>DLLocalServiceImpl</code> kinda directly</p> <p>Another alternative is using <code>DLAppLocalServiceImpl</code> that is employing <code>DLRepositoryLocalServiceImpl</code> and the files are persisted into repository also via Hooks, but a lot of additional stuff is done in there.</p> <ol> <li><p>There is not jackrabbit-text-extractors library in Liferay, so I suppose If I wanted metadata to be extracted from PDF, DOCs, ODS documents, I would have very hard times... because the DL service layer doesn't accept additional properties</p> <ol> <li>I think I'd have to avoid using DL services and JCR hook and access Jackrabbit directly... But I would loose the compatibility and possibility migrate my repository etc.</li> </ol></li> </ol> <p>Could please anybody collaborate on this one please ? Thank you</p>
 

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