package org.greenstone.gsdl3.action;
import org.greenstone.gsdl3.core.ModuleInterface;
import org.greenstone.gsdl3.util.*;
// XML classes
import org.w3c.dom.Node;
import org.w3c.dom.Element;
import org.w3c.dom.Document;
// other java stuff
import java.io.File;
import java.util.HashMap;
import java.util.*;
import java.io.StringReader;
import org.xml.sax.InputSource;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import java.io.*;
import org.xml.sax.*;
import javax.xml.parsers.SAXParserFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import java.io.PrintWriter;
import java.io.StringWriter;
import org.apache.log4j.*;
public class SystemAction extends Action {
static Logger logger = Logger.getLogger(org.greenstone.gsdl3.action.SystemAction.class.getName());
String tempVal = "";
/** process a request */
public Node process (Node message_node) {
Element message = this.converter.nodeToElement(message_node);
// assume only one request
Element request = (Element)GSXML.getChildByTagName(message, GSXML.REQUEST_ELEM);
String subaction = request.getAttribute(GSXML.SUBACTION_ATT);
String lang = request.getAttribute(GSXML.LANG_ATT);
String uid = request.getAttribute(GSXML.USER_ID_ATT);
// get the param list
Element cgi_param_list = (Element)GSXML.getChildByTagName(request, GSXML.PARAM_ELEM+GSXML.LIST_MODIFIER);
HashMap params = GSXML.extractParams(cgi_param_list, false);
Element result = this.doc.createElement(GSXML.MESSAGE_ELEM);
String coll = (String)params.get(GSParams.SYSTEM_CLUSTER);
String to = "";
if (coll!=null && !coll.equals("")) {
to = coll;
}
Element mr_request_message = this.doc.createElement(GSXML.MESSAGE_ELEM);
Element mr_request = GSXML.createBasicRequest(this.doc, GSXML.REQUEST_TYPE_SYSTEM, to, lang, uid);
mr_request_message.appendChild(mr_request);
Element system = this.doc.createElement(GSXML.SYSTEM_ELEM);
mr_request.appendChild(system);
// will need to change the following if can do more than one system request at once
if (subaction.equals("c")) { // configure
system.setAttribute(GSXML.TYPE_ATT, GSXML.SYSTEM_TYPE_CONFIGURE);
String info = (String)params.get(GSParams.SYSTEM_SUBSET);
system.setAttribute(GSXML.SYSTEM_SUBSET_ATT, info);
}
else if(subaction.equals("s")) { // save format statement
logger.error("Initiate save");
String format_string = (String)params.get("data");
logger.error("data="+format_string);
//SamParser sam = new SamParser();
//String format_statement = sam.parse(input);
//logger.error("format string="+format_statement);
Element page_response = this.doc.createElement(GSXML.RESPONSE_ELEM);
Iterator it = params.keySet().iterator();
while(it.hasNext())
{
logger.error("Param: "+it.next());
}
//Node text = this.doc.createTextNode(format_string);
//page_response.appendChild(text);
try {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
//String input = "" + format_string + "";
String input = format_string;
InputSource is = new InputSource( new StringReader( input ) );
Document d = builder.parse( is );
Element e = d.getDocumentElement();
page_response.appendChild(this.doc.importNode(e, true));
}
catch( Exception ex ) {
logger.error("There was an exception "+ex);
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw, true);
ex.printStackTrace(pw);
pw.flush();
sw.flush();
logger.error(sw.toString());
}
//Element child = this.doc.createElement("div"); //format_string);
//Node text = this.doc.createTextNode(format_string); //"Hi there and greetings!
");
//child.innerHTML = "Hi there and greetings!
";
//child.setNodeValue(format_string);
//child.appendChild(text);
result.appendChild(page_response);
return result;
} else {
String name = (String)params.get(GSParams.SYSTEM_MODULE_NAME);
String type = (String)params.get(GSParams.SYSTEM_MODULE_TYPE);
system.setAttribute(GSXML.SYSTEM_MODULE_NAME_ATT, name);
system.setAttribute(GSXML.SYSTEM_MODULE_TYPE_ATT, type);
if (subaction.equals("d")) { // delete
system.setAttribute(GSXML.TYPE_ATT, GSXML.SYSTEM_TYPE_DEACTIVATE);
} else if (subaction.equals("a")) { // add
system.setAttribute(GSXML.TYPE_ATT, GSXML.SYSTEM_TYPE_ACTIVATE);
} else {
// create the default response
// for now just have an error
logger.error("bad subaction type");
Element page_response = this.doc.createElement(GSXML.RESPONSE_ELEM);
result.appendChild(page_response);
return result;
}
}
Node response_message = this.mr.process(mr_request_message);
result.appendChild(GSXML.duplicateWithNewName(this.doc, (Element)GSXML.getChildByTagName(response_message, GSXML.RESPONSE_ELEM), GSXML.RESPONSE_ELEM, true));
return result;
}
/*
public void parse (String message) {
//get a factory
SAXParserFactory spf = SAXParserFactory.newInstance();
try {
//get a new instance of parser
SAXParser sp = spf.newSAXParser();
InputSource is = new InputSource( new StringReader( message ) );
//parse the file and also register this class for call backs
sp.parse(is, new SamParser());
}catch(SAXException se) {
se.printStackTrace();
}catch(ParserConfigurationException pce) {
pce.printStackTrace();
}catch (IOException ie) {
ie.printStackTrace();
}
}
*/
//Event Handlers
/* public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
//reset
logger.error("Start Element: "+qName);
//if(qName.equalsIgnoreCase("Template")) {
//create a new instance of employee
//tempEmp = new Employee();
//tempEmp.setType(attributes.getValue("type"));
//}
}
public void characters(char[] ch, int start, int length) throws SAXException {
tempVal = new String(ch,start,length);
}
public void endElement(String uri, String localName,
String qName) throws SAXException {
logger.error("Characters: "+tempVal);
logger.error("End Element: "+qName);
/*
if(qName.equalsIgnoreCase("Employee")) {
//add it to the list
myEmpls.add(tempEmp);
}else if (qName.equalsIgnoreCase("Name")) {
tempEmp.setName(tempVal);
}else if (qName.equalsIgnoreCase("Id")) {
tempEmp.setId(Integer.parseInt(tempVal));
}else if (qName.equalsIgnoreCase("Age")) {
tempEmp.setAge(Integer.parseInt(tempVal));
} */
//}
}