org.eclipse.rdf4j.sail.lucene.LuceneQuery.java Source code

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Here is the source code for org.eclipse.rdf4j.sail.lucene.LuceneQuery.java

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/*******************************************************************************
 * Copyright (c) 2015 Eclipse RDF4J contributors, Aduna, and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Distribution License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *******************************************************************************/
package org.eclipse.rdf4j.sail.lucene;

import java.io.IOException;
import java.util.Arrays;

import org.apache.lucene.search.Query;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.search.highlight.Formatter;
import org.apache.lucene.search.highlight.Highlighter;
import org.apache.lucene.search.highlight.QueryScorer;
import org.apache.lucene.search.highlight.SimpleHTMLFormatter;
import org.eclipse.rdf4j.model.Resource;
import org.eclipse.rdf4j.model.URI;

import com.google.common.base.Function;
import com.google.common.collect.Iterables;

/**
 * To be removed, no longer used.
 */
@Deprecated
public class LuceneQuery implements SearchQuery {

    private final Query query;

    private final LuceneIndex index;

    private Highlighter highlighter;

    @Deprecated
    public LuceneQuery(Query q, LuceneIndex index) {
        this.query = q;
        this.index = index;
    }

    @Override
    @Deprecated
    public Iterable<? extends DocumentScore> query(Resource resource) throws IOException {
        TopDocs docs;
        if (resource != null) {
            docs = index.search(resource, query);
        } else {
            docs = index.search(query);
        }
        return Iterables.transform(Arrays.asList(docs.scoreDocs), new Function<ScoreDoc, DocumentScore>() {

            @Override
            public DocumentScore apply(ScoreDoc doc) {
                return new LuceneDocumentScore(doc, highlighter, index);
            }
        });
    }

    @Override
    @Deprecated
    public void highlight(URI property) {
        Formatter formatter = new SimpleHTMLFormatter(SearchFields.HIGHLIGHTER_PRE_TAG,
                SearchFields.HIGHLIGHTER_POST_TAG);
        highlighter = new Highlighter(formatter, new QueryScorer(query));
    }
}