gwap.search.DetailedSearch.java Source code

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Here is the source code for gwap.search.DetailedSearch.java

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/*
 * This file is part of gwap, an open platform for games with a purpose
 *
 * Copyright (C) 2013
 * Project play4science
 * Lehr- und Forschungseinheit fr Programmier- und Modellierungssprachen
 * Ludwig-Maximilians-Universitt Mnchen
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package gwap.search;

import gwap.model.resource.ArtResource;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.solr.client.solrj.SolrQuery;
import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Logger;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Out;
import org.jboss.seam.annotations.Scope;
import org.jboss.seam.core.Conversation;
import org.jboss.seam.faces.Redirect;
import org.jboss.seam.log.Log;

/**
 * @author Christoph Wieser, Fabian Kneil
 */
@Name("detailedSearch")
@Scope(ScopeType.CONVERSATION)
public class DetailedSearch extends SolrSearchBean {

    private static final long serialVersionUID = -5805789047740851265L;

    @Logger
    private Log log;

    @In
    @Out
    protected QueryBean queryBean;

    private static final Pattern p = Pattern.compile("\"[^\"]+\"|[^\" ]+");

    @Out(required = false)
    protected ArtResource resource;

    @Override
    public SolrQuery generateQuery() {
        StringBuilder query = new StringBuilder();

        //FIXME: alle Lucene Special chars escapen

        String language = localeSelector.getLanguage();
        query.append(parseField(queryBean.getTags(), "tag_" + language));
        query.append(parseField(queryBean.getArtist(), "artist"));
        query.append(parseField(queryBean.getTitle(), "title"));
        query.append(parseField(queryBean.getLocation(), "location_institution"));
        query.append(parseField(queryBean.getYear(), "datecreated"));

        log.info("Detailed search: #0", query.toString());

        SolrQuery solrQuery = new SolrQuery(query.toString());
        solrQuery.setParam("defType", "edismax");
        return solrQuery;
    }

    @Override
    public void search() {
        dirty = true;
        Conversation.instance().endBeforeRedirect();
        Redirect redirect = Redirect.instance();
        redirect.setViewId("/detailedSearchResults.xhtml");
        queryBean.setNotEmptyParameters(redirect);
        redirect.setConversationPropagationEnabled(false);
        redirect.execute();
    }

    private String parseField(String field, String solrField) {
        String string = "";
        if (field != null && field.length() > 0) {
            Matcher matcher = p.matcher(field);
            while (matcher.find()) {
                string += solrField + ":" + matcher.group() + " ";
            }
        }
        return string;
    }
}