LuceneHelper.java

package org.juxtasoftware.util;

import java.io.Reader;

import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.Term;
import org.juxtasoftware.Constants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Component
public class LuceneHelper {
    @Autowired private IndexWriter indexWriter;
    
    protected static final Logger LOG = LoggerFactory.getLogger( Constants.WS_LOGGER_NAME );
    
    public void addDocument( final String docType, final String ws, final Long docId, final String name, final Long textId, final Reader reader ) {
        try {
            Document doc = new Document();
            doc.add(new Field("id", textId.toString(), Field.Store.YES, Field.Index.NOT_ANALYZED));
            doc.add(new Field("workspace", ws, Field.Store.YES, Field.Index.NOT_ANALYZED));
            doc.add(new Field("type", docType, Field.Store.YES, Field.Index.NOT_ANALYZED));
            doc.add(new Field("itemId", docId.toString(), Field.Store.YES, Field.Index.NOT_ANALYZED));
            doc.add(new Field("name", name, Field.Store.YES, Field.Index.NOT_ANALYZED));
            Field f = new Field("content", reader, Field.TermVector.WITH_POSITIONS_OFFSETS);
            doc.add( f );
            this.indexWriter.addDocument(doc);
            this.indexWriter.commit();
        } catch (Exception e) {
            LOG.error("Error adding "+docType+" named "+name+" to Lucene index", e);
        }
    }
    
    public void deleteDocument( final Long id ) {  
        try {
            Term term = new Term("id", id.toString());
            this.indexWriter.deleteDocuments(term);
            this.indexWriter.commit();
        } catch (Exception e) {
            LOG.error("Error deleting document from Lucene index", e);
        }
    }
}