JSON2Converter.java

/*
 * #%L
 * server
 * %%
 * Copyright (C) 2012 - 2015 valdasraps
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser 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 General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/lgpl-3.0.html>.
 * #L%
 */
package lt.emasina.resthub.server.converter;

import java.util.Calendar;
import static lt.emasina.resthub.server.converter.JSONConverterBase.DATE_FORMAT;

import lt.emasina.resthub.server.handler.DataHandler;

import org.json.JSONArray;
import org.json.JSONObject;
import org.restlet.data.Reference;

/**
 * JSONExporter
 *
 * @author valdo
 */
public class JSON2Converter extends JSONConverterBase {

    @Override
    protected DataVisitor getDataVisitor(final DataHandler handler, final Reference ref, final JSONArray arr) {
        return new DataVisitor(handler) {

            private JSONObject o;

            @Override
            public void startRow() {
                o = new JSONObject();
            }

            @Override
            public void visitCol() throws Exception {
                String name = column.getJName();
                switch (column.getType()) {
                    case DATE:
                        Calendar cal = (Calendar) value;
                        o.put(name, value != null ? DATE_FORMAT.format(cal.getTime()) : null);
                        break;
                    case CLOB:
                    case BLOB:
                        o.put(name, getLobReference(ref));
                        break;
                    default:
                        o.put(name, value);
                }
            }

            @Override
            public void endRow() {
                arr.put(o);
            }

        };
    }

}