gwap.search.MitAlphabeticSearchBean.java Source code

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

Source

/*
 * 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 static com.google.common.base.Strings.isNullOrEmpty;

import org.apache.solr.client.solrj.SolrQuery;
import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;

/**
 * Provides search through the letters of the alphabet.
 * 
 * @author Fabian Kneil
 */
@Name("mitAlphabeticSearchBean")
@Scope(ScopeType.PAGE)
public class MitAlphabeticSearchBean extends MitSearchBean {

    private static final long serialVersionUID = 3705006325134252092L;

    private static final String[] LETTERS = new String[] { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K",
            "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z" };

    @Override
    public SolrQuery generateQuery() {
        if (isQueryEmpty()) {
            queryBean.setLetter("A");
        }
        String letter = queryBean.getLetter();
        letter = letter.toUpperCase();
        queryBean.setLetter(letter);
        if (!letter.matches("[a-zA-Z]")) {
            log.warn("Query by letter #0 not possible", letter);
            return null;
        }
        SolrQuery solrQuery = new SolrQuery("statement_untokenized:" + letter + "*");
        solrQuery.setParam("defType", "edismax");
        solrQuery.setParam("sort", "statement_untokenized asc");
        return solrQuery;
    }

    @Override
    protected boolean isQueryEmpty() {
        return isNullOrEmpty(queryBean.getLetter());
    }

    public String[] getLetters() {
        return LETTERS;
    }
}