/** Convenience routine taking Strings; lookup is done in SymbolTable. */
public Method findMethod(String name, String sig) {
SymbolTable syms = VM.getVM().getSymbolTable();
Symbol nameSym = syms.probe(name);
Symbol sigSym = syms.probe(sig);
if (nameSym == null || sigSym == null) {
return null;
}
return findMethod(nameSym, sigSym);
}
/**
* Call this function if you want to parse expressions which involve complex numbers. This method
* specifies "i" as the imaginary unit (0,1). Two functions re() and im() are also added for
* extracting the real or imaginary components of a complex number respectively.
*
* <p>
*
* @since 2.3.0 alpha The functions cmod and arg are added to get the modulus and argument.
* @since 2.3.0 beta 1 The functions complex and polar to convert x,y and r,theta to Complex.
* @since Feb 05 added complex conjugate conj.
*/
public void addComplex() {
// add constants to Symbol Table
symTab.addConstant("i", new Complex(0, 1));
funTab.put("re", new Real());
funTab.put("im", new Imaginary());
funTab.put("arg", new Arg());
funTab.put("cmod", new Abs());
funTab.put("complex", new ComplexPFMC());
funTab.put("polar", new Polar());
funTab.put("conj", new Conjugate());
}
/**
* Gets the object representing the variable with a given name.
*
* @param name the name of the variable to find.
* @return the Variable object or null if name not found.
* @since 2.3.0 alpha
*/
public Variable getVar(String name) {
return symTab.getVar(name);
}
/**
* Sets the value of a variable. The variable must exist beforehand.
*
* @param name name of the variable.
* @param val the initial value of the variable.
* @throws NullPointerException if the variable has not been previously created with {@link
* #addVariable(String,Object)} first.
* @since 2.3.0 alpha
* @since April 05 - throws an exception if variable unset.
*/
public void setVarValue(String name, Object val) {
symTab.setVarValue(name, val);
}
/**
* Returns the value of the variable with given name.
*
* @param name name of the variable.
* @return the current value of the variable.
* @since 2.3.0 alpha
*/
public Object getVarValue(String name) {
return symTab.getVar(name).getValue();
}
/**
* Removes a variable from the parser. For example after calling addStandardConstants(),
* removeVariable("e") might be called to remove the euler constant from the set of variables.
*
* @return The value of the variable if it was added earlier. If the variable is not in the table
* of variables, <code>null</code> is returned.
*/
public Object removeVariable(String name) {
return symTab.remove(name);
}
/**
* Adds a new variable to the parser as an object, or updates the value of an existing variable.
* This must be done before parsing an expression so the parser is aware that the new variable may
* be contained in the expression.
*
* @param name Name of the variable to be added
* @param object Initial value or new value for the variable
*/
public void addVariable(String name, Object object) {
symTab.makeVarIfNeeded(name, object);
}
/**
* Adds a new complex variable to the parser, or updates the value of an existing variable. This
* must be done before parsing an expression so the parser is aware that the new variable may be
* contained in the expression.
*
* @param name Name of the variable to be added
* @param re Initial real value or new real value for the variable
* @param im Initial imaginary value or new imaginary value for the variable
* @return Complex object of the variable
*/
public Complex addVariable(String name, double re, double im) {
Complex object = new Complex(re, im);
symTab.makeVarIfNeeded(name, object);
return object;
}
/**
* Adds a new variable to the parser, or updates the value of an existing variable. This must be
* done before parsing an expression so the parser is aware that the new variable may be contained
* in the expression.
*
* @param name Name of the variable to be added
* @param value Initial value or new value for the variable
* @return Double object of the variable
*/
public Double addVariable(String name, double value) {
Double object = new Double(value);
symTab.makeVarIfNeeded(name, object);
return object;
}
/**
* Adds a constant. This is a variable whose value cannot be changed.
*
* @since 2.3.0 beta 1
*/
public void addConstant(String name, Object value) {
symTab.addConstant(name, value);
}
/**
* Adds the constants pi and e to the parser. As addStandardFunctions(), this method should be
* called immediately after the JEP object is created.
*/
public void addStandardConstants() {
// add constants to Symbol Table
symTab.addConstant("pi", new Double(Math.PI));
symTab.addConstant("e", new Double(Math.E));
}
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();
}