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In Our Custom search portlet, I'm customizing the indexer post processor of Journal Article with queries required for  our custom web content structure. But I noticed that the search query when reaches at the indexer post processor already have clauses in it, and because of that the search is performed on fields which we don't needed, for ex: title,description etc.  We want the indexer post processor of journal article to perform search only on fields in the custom structure. How to resolve the issue?  Thanks in advance.