source: trunk/gsdl3/src/java/org/greenstone/gsdl3/Library2.java@ 3341

/*
 *    Library2.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;

import org.greenstone.gsdl3.core.*;
import org.greenstone.gsdl3.util.*;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.File;
import java.io.IOException;
/**
 * A program to take XML strings from the command line and send 
 * them to the system.
 *
 * @author <a href="mailto:[email protected]">Katherine Don</a>
 * @version $Revision: 3292 $
 */
final public class Library2 {

    public static void main(String args[]) {

    if (args.length != 2) {
        System.out.println("Usage: Library2 <gsdl3home> <sitehome>");
        System.exit(1);
    }
    String gsdl_home = args[0]; 
    String transform_home = GSFile.xmlTransformDir(gsdl_home);
    String site_home = args[1];
    
    MessageRouter mr = new MessageRouter();
    mr.setSiteHome(site_home);
    mr.configure();
    
    // for doing xslt transforms
    XMLTransformer transformer = new XMLTransformer();

    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String query=null;
    String request=null;
    String result=null;
    String collect=null;
    String service=null;
    String info=null;
    String content=null;
    while (true) {
        System.out.println("Please enter a  query type (choose from: describe, query) or 'exit' to quit");
        try {
        query = br.readLine();
        query.trim();
        
        if (query.startsWith("exit")) {
            System.exit(1);
        }
        if (query.equals("describe")|| query.equals("query")) {
            System.out.println("\nPlease enter a collection name (or <enter> for no collection)");
            collect = br.readLine();
            collect.trim();
            System.out.println("\nPlease enter a service name (or <enter> for no service)");
            service = br.readLine();
            service.trim();
            if (query.equals("describe")) {
            
            System.out.println("\nPlease enter an info name (or <enter> for no info)");
            info = br.readLine();
            info.trim();
            
            } else if (query.equals("query") ) {
            System.out.println("\nPlease enter the content to your query (in xml, all on one line - sorry about that)");
            content=br.readLine();
            content.trim();
            }
            
            request = "<message><request type='"+query+"' to='";
            
            if (!collect.equals ("")) {
            request += collect+"/";
            }
            if (!service.equals("")) {
            request += service+"/";
            }
            request += "'";
            if (query.equals("describe") && !info.equals("")) {
            request += " info='"+info+"'/>";
            }
            else if (query.equals("query") && !content.equals("")) {
            request +=">"+content+"</request>";
            } else {
            request += "/>";
            }


            request += "</message>";
            
            System.out.println("Sending message to MessageRouter:\n"+request);
            result = mr.process(request);
            
            System.out.println("Raw Result:\n"+result+"\n");
            
            // transform the result
            
            // select a stylesheet
            String stylesheet = null;
            if (query.equals("describe")) {
            if (collect.equals("")&&service.equals("")) {
                stylesheet = transform_home+File.separatorChar+"home.xsl";
            } else if (!collect.equals("")) {
                stylesheet = transform_home+File.separatorChar+"collect_about.xsl";
            } else if (!service.equals("")) {
                stylesheet = transform_home+File.separatorChar+"service_about.xsl";
            }
            } else if (query.equals("query")) {
            stylesheet = transform_home+File.separatorChar+"query_result.xsl";
            }
            if (stylesheet != null) {
            File style = new File(stylesheet);
            if (!style.exists()) {
                System.err.println("stylesheet doesn't exist");
            } else {
            
                String transformed_result = transformer.transform(stylesheet, result);
                System.out.println("Transformed result:\n"+transformed_result);
            }
            } else {
            System.out.println("no appropriate stylesheet found");
            }
        } else {
            System.out.println("your request was not understood, sorry");
        }
        
        }  catch (IOException e) {
        System.err.println("Library2 IO exception:"+e.getMessage());
        }
        
    } // while (true
    }
    
}