private String ReadWholeFileToString(String filename) {
File file = new File(filename);
StringBuffer contents = new StringBuffer();
BufferedReader reader = null;
try {
reader = new BufferedReader(new FileReader(file));
String text = null;
// repeat until all lines is read
while ((text = reader.readLine()) != null) {
contents.append(text).append(System.getProperty("line.separator"));
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (reader != null) {
reader.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
// show file contents here
return contents.toString();
}
public class RuleML2008LiaisonChair extends HttpServlet {
public static final String FS = System.getProperty("file.separator");
private final String instantiation = "SymposiumPlanner08";
private final String topic = "LiaisonChair";
private String address;
private String port;
private String poslAddress;
private String rdfAddress;
private String messageEndpoint;
public void init(ServletConfig config) throws ServletException {
super.init(config);
}
/////////////////////////
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
System.out.println("Publicty Chair Servlet RuleML-2009");
out.println("Publicty Chair Servlet RuleML-2009");
Calendar cal = new GregorianCalendar();
int year = cal.get(Calendar.YEAR);
int month = cal.get(Calendar.MONTH) + 1;
int day = cal.get(Calendar.DAY_OF_MONTH);
String date;
if (month == 10 || month == 11 || month == 12) date = "" + year + month + day;
else date = "" + year + "0" + month + day;
date = "date(" + date + ":integer).";
System.out.println("Publicty Chair Servlet Console update:");
System.out.println(date);
}
/////////////////////////
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try {
address = PAConfiguration.getAddress();
port = PAConfiguration.getPort(instantiation);
poslAddress = PAConfiguration.getPOSL(instantiation, topic);
rdfAddress = PAConfiguration.getRDFTaxonomy(instantiation);
messageEndpoint = PAConfiguration.getEndpointName(instantiation, topic);
} catch (BadConfigurationException e) {
System.out.println(e.getMessage());
e.printStackTrace();
System.exit(0);
}
response.setContentType("text/html; charset=UTF-8");
PrintWriter out = response.getWriter();
try {
System.out.println("5 Publicty Chair Servlet");
System.out.println(response.toString());
BufferedReader brd = request.getReader();
String input = "";
String message = "";
while (!input.equals("</RuleML>")) {
input = brd.readLine();
message = message + input;
}
String[] varOrder = getVariableOrder(message);
System.out.println("Received Message: " + message);
// BackwardReasoner br = new BackwardReasoner();
// Iterator solit =null;
// DefiniteClause dc = null;
// SymbolTable.reset();
POSLParser pp = new POSLParser();
// String contents = "c(a).\nc(b).\nc(c).";
Date t1 = new GregorianCalendar().getTime();
System.out.println(t1.getHours() + ":" + t1.getMinutes());
// append time to contents
System.out.println("day: " + t1.getDay());
System.out.println("day: " + t1.getYear());
System.out.println("day: " + t1.getMonth());
// time
String time = "time(" + t1.getHours() + ":integer).";
System.out.println(time);
String url = poslAddress;
// String url = "http://www.jdrew.org/oojdrew/test.posl";
String contents = "";
// day of the week
int day = t1.getDay();
boolean weekday = true;
if (day == 0 || day == 6) {
weekday = false;
}
String dayOfWeek;
if (weekday) {
dayOfWeek = "day(weekday).";
} else {
dayOfWeek = "day(weekend).";
}
// full date
Calendar cal = new GregorianCalendar();
int year = cal.get(Calendar.YEAR);
int month = cal.get(Calendar.MONTH) + 1;
int day2 = cal.get(Calendar.DAY_OF_MONTH);
String date;
String day3 = "" + day2;
if (day2 == 1 || day2 == 2 || day2 == 3 || day2 == 4 || day2 == 5 || day2 == 6 || day2 == 7
|| day2 == 8 || day2 == 9) {
day3 = "0" + day2;
}
if (month == 10 || month == 11 || month == 12) date = "" + year + month + day3;
else date = "" + year + "0" + month + day3;
date = "date(" + date + ":integer).";
System.out.println(date);
String url2 = rdfAddress;
HttpClient client2 = new HttpClient();
GetMethod method2 = new GetMethod(url2);
method2.setFollowRedirects(true);
String typestr = "";
// Execute the GET method
int statusCode2 = client2.executeMethod(method2);
if (statusCode2 != -1) {
typestr = method2.getResponseBodyAsString();
}
System.out.println("Types: " + typestr);
Types.reset();
RDFSParser.parseRDFSString(typestr);
try {
HttpClient client = new HttpClient();
GetMethod method = new GetMethod(url);
method.setFollowRedirects(true);
// Execute the GET method
int statusCode = client.executeMethod(method);
if (statusCode != -1) {
contents = method.getResponseBodyAsString();
}
} catch (Exception e) {
e.printStackTrace();
}
contents = contents + "\n" + time;
contents = contents + "\n" + dayOfWeek;
contents = contents + "\n" + date;
BackwardReasoner br = new BackwardReasoner();
Iterator solit = null;
DefiniteClause dc = null;
SymbolTable.reset();
pp.parseDefiniteClauses(contents);
br.loadClauses(pp.iterator());
System.out.println("TEST");
Iterator it = pp.iterator();
while (it.hasNext()) {
DefiniteClause d = (DefiniteClause) it.next();
System.out.println("Loaded clause: " + d.toPOSLString());
}
br = new BackwardReasoner(br.clauses, br.oids);
MessageParser m = new MessageParser(message);
Element atom = null;
try {
atom = m.parseForContent();
} catch (Exception e) {
System.out.println("Invalid Message");
// out.flush();
}
QueryBuilder q = new QueryBuilder(atom);
String query = q.generateDoc();
System.out.println("ABOUT TO INPUT THIS QUERY:" + query);
RuleMLParser qp = new RuleMLParser();
try {
dc = qp.parseRuleMLQuery(query);
} catch (Exception e) {
System.out.println("Invalid Query");
// out.flush();
}
// solit = br.iterativeDepthFirstSolutionIterator(dc);
solit = br.iterativeDepthFirstSolutionIterator(dc);
int varSize = 0;
while (solit.hasNext()) {
Vector data = new Vector();
BackwardReasoner.GoalList gl = (BackwardReasoner.GoalList) solit.next();
Hashtable varbind = gl.varBindings;
javax.swing.tree.DefaultMutableTreeNode root = br.toTree();
root.setAllowsChildren(true);
javax.swing.tree.DefaultTreeModel dtm = new DefaultTreeModel(root);
int i = 0;
Object[][] rowdata = new Object[varbind.size()][2];
varSize = varbind.size();
Enumeration e = varbind.keys();
while (e.hasMoreElements()) {
Object k = e.nextElement();
Object val = varbind.get(k);
String ks = (String) k;
rowdata[i][0] = ks;
rowdata[i][1] = val;
i++;
}
data.addElement(rowdata);
String[] messages = new String[data.size()];
MessageGenerator g =
new MessageGenerator(
data, varSize, messageEndpoint, m.getId(), m.getProtocol(), m.getRel(), varOrder);
messages = g.Messages2();
String appender = "";
URL sender = new URL(address + ":" + port);
HttpMessage msg = new HttpMessage(sender);
Properties props = new Properties();
for (int i1 = 0; i1 < data.size(); i1++) {
System.out.println(i1 + ")" + messages[i1].toString());
props.put("text", messages[i1].toString());
InputStream in = msg.sendGetMessage(props);
}
System.out.println("NEXT MESSAGE");
}
MessageGenerator g =
new MessageGenerator(
null, varSize, messageEndpoint, m.getId(), m.getProtocol(), m.getRel());
URL sender = new URL(address + ":" + port);
HttpMessage msg = new HttpMessage(sender);
Properties props = new Properties();
String finalMessage = g.finalMessage(query);
System.out.println(finalMessage);
props.put("text", finalMessage);
InputStream in = msg.sendGetMessage(props);
System.out.println("Stop_Communication");
} catch (Exception e) {
System.out.println("ERROR has occured : " + e.toString());
}
out.close();
}
// Get parameters from the request URL.
String getRequestParam(HttpServletRequest request, String param) {
if (request != null) {
String paramVal = request.getParameter(param);
return paramVal;
}
return null;
}
/**
* Is used to remember the order of variables so that the message returned to the OA does not
* contain randomly ordered data.
*
* @param message The RuleML message
* @return An array containing the order of the variables.
*/
public static String[] getVariableOrder(String message) {
Vector<String> variables = new Vector<String>();
String[] variableList;
// Break string up
StringTokenizer st = new StringTokenizer(message, "<");
String temp = ""; // Temporary storage
String tempVar = ""; // Temporary variable storage
// While information remains
while (st.hasMoreTokens()) {
temp = st.nextToken();
// If it is a variable
if (temp.startsWith("Var>")) {
tempVar = "";
// Get the name of the variable
for (int i = 4; i < temp.length(); i++) {
if (temp.charAt(i) == '<') break;
else tempVar = tempVar + temp.charAt(i);
}
variables.addElement(tempVar); // Store the variable name
}
}
// Convert the vector to an array
variableList = new String[variables.size()];
for (int i = 0; i < variables.size(); i++) {
variableList[i] = variables.elementAt(i);
}
return variableList;
}
// End getVariableOrder() method
}