Liferay boolean query for searching

  By default liferay supports lucene, so how to retrieve entries

 Code as follows ,

        BooleanQuery fullQuery = BooleanQueryFactoryUtil.create(searchContext);

        BooleanQuery searchQuery = BooleanQueryFactoryUtil.create(searchContext);
 
      Searching the blog

          searchQuery.addRequiredTerm(Field.ENTRY_CLASS_NAME, BlogsEntry.class.getName());

      Adding required terms to search query 

           searchQuery.addRequiredTerm(Field.ASSET_CATEGORY_IDS, CategoryId);

              fullQuery.add(searchQuery, BooleanClauseOccur.MUST);

     Adding optional terms where the content should belong to at lease one of these categories

           BooleanQuery categoryQuery = BooleanQueryFactoryUtil.create(searchContext);
            categoryQuery.addExactTerm(Field.ASSET_CATEGORY_IDS, CategoryId);

            fullQuery.add(categoryQuery, BooleanClauseOccur.MUST);

Then use fullquery to search blogs

SearchContext searchContext =
 SearchContextFactory. getInstance(PortalUtil.getHttpServletRequest(renderRequest));

Hits hits =  SearchEngineUtil.search(searchContext, fullQuery);

It will return hits , convert to document and iterate document to get the entries.

  List<Document> docList = resultHits.toList();

for ( Document document : docList ){

        doc.get(Field.ENTRY_CLASS_PK);  //classPK
        doc.getValues(Field.ASSET_TAG_NAMES) // tags
       doc.get(Field.MODIFIED_DATE)// modified date
}