source: trunk/gsdl3/src/java/org/greenstone/gsdl3/service/MGPPService.java@ 3452

/*
 *    MGPPService.java
 *    Copyright (C) 2002 New Zealand Digital Library, http://www.nzdl.org
 *
 *    This program 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 2 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 Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
package org.greenstone.gsdl3.service;

import org.w3c.dom.Document; 
import org.w3c.dom.Node; 
import org.w3c.dom.Text; 
import org.w3c.dom.Element; 
import org.w3c.dom.NodeList; 
/**
 * A Service class for MGPP
 *
 * @author <a href="mailto:[email protected]">Katherine Don</a>
 * @version $Revision: 3452 $
 */


public class MGPPService 
    extends ServiceModule {

    /** passes the request Element to the appropriate service function*/
    protected Element processService(String name, Element request) {

    // dont need to check that the service name is  supported for this particular object, because that has been checked by ServiceModule
    if (name.equals("TextQuery")) {
        return processTextQuery(request);
    } else if(name.equals("FieldQuery")) {
        return processFieldQuery(request);
    } else if (name.equals("DocRetrieve")) {
        return processDocRetrieve(request);
    } else if (name.equals("MetadataRetrieve")) {
        return processMetadataRetrieve(request);
    }
    
    System.err.println("MGPPService:should never get here. service type wrong:"+name);
    return null;
    
    
    }
    

    /** configure this service */
    public boolean configure(Element info) {

    System.out.println("configuring MGPPService");

    Element e = null;
    // these entries should reflect the build config file - some services may not be available depending on how the colleciton was built.
    // set up short_service_info_ - for now just has name and type
    e = doc_.createElement("service");
    e.setAttribute("type", "query");
    e.setAttribute("name", "TextQuery");
    short_service_info_.appendChild(e);

    e = doc_.createElement("service");
    e.setAttribute("type", "query");
    e.setAttribute("name", "FieldQuery");
    short_service_info_.appendChild(e);

    e = doc_.createElement("service");
    e.setAttribute("type", "query");
    e.setAttribute("name", "DocRetrieve");
    short_service_info_.appendChild(e);

    e = doc_.createElement("service");
    e.setAttribute("type", "query");
    e.setAttribute("name", "MetadataRetrieve");
    short_service_info_.appendChild(e);

    // set up service_info_map_ - for now, just has the same elements as above
    // should have full details about each service incl params lists etc.
    e = doc_.createElement("service");
    e.setAttribute("type", "query");
    e.setAttribute("name", "TextQuery");
    service_info_map_.put("TextQuery", e);
    
    e = doc_.createElement("service");
    e.setAttribute("type", "query");
    e.setAttribute("name", "FieldQuery");
    service_info_map_.put("FieldQuery", e);
    
    e = doc_.createElement("service");
    e.setAttribute("type", "query");
    e.setAttribute("name", "DocRetrieve");
    service_info_map_.put("DocRetrieve", e);
    
    e = doc_.createElement("service");
    e.setAttribute("type", "query");
    e.setAttribute("name", "MetadataRetrieve");
    service_info_map_.put("MetadataRetrieve", e);
    return true;
    }

    /** process a text query */
    protected Element processTextQuery(Element request) {
    Element result = doc_.createElement("response");
    result.setAttribute("name", "TextQuery");
    
    // dummy result
    Text t = null;
    t = doc_.createTextNode("Textquery result... ");
    result.appendChild(t);
    return result;
    }

    /** process a fielded query */
    protected Element processFieldQuery(Element request) {
    Element result = doc_.createElement("response");
    result.setAttribute("name", "FieldQuery");
    
    // dummy result
    Text t = null;
    t = doc_.createTextNode("Fieldquery result... ");
    result.appendChild(t);
    return result;
    }

    /** retrieve a document */
    protected Element processDocRetrieve(Element request) {
    Element result = doc_.createElement("response");
    result.setAttribute("name", "DocRetrieve");
    
    // dummy result
    Text t = null;
    t = doc_.createTextNode("DocRetrieve result... ");
    result.appendChild(t);
    return result;
    }

    /** retrieve metadata */
    protected Element processMetadataRetrieve(Element request) {
    Element result = doc_.createElement("response");
    result.setAttribute("name", "MetadataRetrieve");
    
    // dummy result
    Text t = null;
    t = doc_.createTextNode("MetadataRetrieve result... ");
    result.appendChild(t);
    return result;
    }

}