com.isotrol.impe3.oi.nr.QueryTranslator.java Source code

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Here is the source code for com.isotrol.impe3.oi.nr.QueryTranslator.java

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/**
 * This file is part of Port@l
 * Port@l 3.0 - Portal Engine and Management System
 * Copyright (C) 2010  Isotrol, SA.  http://www.isotrol.com
 *
 * Port@l is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Port@l 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Port@l.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.isotrol.impe3.oi.nr;

import org.apache.lucene.search.Query;
import org.apache.lucene.search.Sort;
import org.apache.lucene.search.SortField;

import com.isotrol.impe3.nr.api.NRSortField;
import com.isotrol.impe3.nr.api.NodeFilter;
import com.isotrol.impe3.nr.api.NodeQuery;
import com.isotrol.impe3.nr.api.NodeSort;

/**
 * Lucene query translator.
 * @author Emilio Escobar Reyero
 */
public class QueryTranslator {

    /**
     * Translate a node sort to lucene sort
     * @param lsort original sort
     * @return lucene sort
     */
    public Sort sort(final NodeSort lsort) {
        if (lsort == null) {
            return null;
        }

        NRSortField[] lfields = lsort.getFields();
        SortField[] fields = new SortField[lfields.length];

        for (int i = 0; i < lfields.length; i++) {
            final SortField field = new SortField(lfields[i].getField(), SortField.STRING, lfields[i].isReverse());
            fields[i] = field;
        }

        return new Sort(fields);
    }

    /**
     * Returns a translated query.
     * @param query Original query.
     * @return The translated query.
     */
    public Query query(NodeQuery query) {
        return null;
    }

    public Query query(NodeFilter filter) {
        return null;
    }

    public Query query(NodeQuery query, NodeFilter filter) {
        return null;
    }

}