public static ArrayList<String> getTextValue(Element ele, String tagName) {
ArrayList<String> returnVal = new ArrayList<String>();
// NodeList nll = ele.getElementsByTagName("*");
NodeList nl = ele.getElementsByTagName(tagName);
if (nl != null && nl.getLength() > 0) {
for (int i = 0; i < nl.getLength(); i++) {
Element el = (Element) nl.item(i);
returnVal.add(el.getFirstChild().getNodeValue());
}
}
return returnVal;
}
static ArrayList<PVAR_INST_DEF> processXMLAction(DOMParser p, InputSource isrc, State state)
throws Exception {
try {
// showInputSource(isrc); System.exit(1); // TODO
p.parse(isrc);
Element e = p.getDocument().getDocumentElement();
if (SHOW_XML) {
System.out.println("Received action msg:");
printXMLNode(e);
}
if (!e.getNodeName().equals(ACTIONS)) {
System.out.println("ERROR: NO ACTIONS NODE");
System.exit(1);
return null;
}
NodeList nl = e.getElementsByTagName(ACTION);
// System.out.println(nl);
if (nl != null) { // && nl.getLength() > 0) { // TODO: Scott
ArrayList<PVAR_INST_DEF> ds = new ArrayList<PVAR_INST_DEF>();
for (int i = 0; i < nl.getLength(); i++) {
Element el = (Element) nl.item(i);
String name = getTextValue(el, ACTION_NAME).get(0);
ArrayList<String> args = getTextValue(el, ACTION_ARG);
ArrayList<LCONST> lcArgs = new ArrayList<LCONST>();
for (String arg : args) {
if (arg.startsWith("@")) lcArgs.add(new RDDL.ENUM_VAL(arg));
else lcArgs.add(new RDDL.OBJECT_VAL(arg));
}
String pvalue = getTextValue(el, ACTION_VALUE).get(0);
Object value = getValue(name, pvalue, state);
PVAR_INST_DEF d = new PVAR_INST_DEF(name, value, lcArgs);
ds.add(d);
}
return ds;
} else return new ArrayList<PVAR_INST_DEF>(); // FYI: May be unreachable. -Scott
// } else { // TODO: Removed by Scott, NOOP should not be handled differently
// nl = e.getElementsByTagName(NOOP);
// if ( nl != null && nl.getLength() > 0) {
// ArrayList<PVAR_INST_DEF> ds = new ArrayList<PVAR_INST_DEF>();
// return ds;
// }
// }
} catch (Exception e) {
// TODO Auto-generated catch block
System.out.println("FATAL SERVER ERROR:\n" + e);
// t.printStackTrace();
throw e;
// System.exit(1);
}
}
static boolean processXMLRoundRequest(DOMParser p, InputSource isrc) {
try {
p.parse(isrc);
Element e = p.getDocument().getDocumentElement();
if (e.getNodeName().equals(ROUND_REQUEST)) {
return true;
}
return false;
} catch (SAXException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
return false;
}
static void processXMLSessionRequest(DOMParser p, InputSource isrc, Server server) {
try {
p.parse(isrc);
Element e = p.getDocument().getDocumentElement();
if (e.getNodeName().equals(SESSION_REQUEST)) {
server.requestedInstance = getTextValue(e, PROBLEM_NAME).get(0);
server.clientName = getTextValue(e, CLIENT_NAME).get(0);
NodeList nl = e.getElementsByTagName(NO_XML_HEADER);
if (nl.getLength() > 0) {
NO_XML_HEADING = true;
}
}
return;
} catch (SAXException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
return;
}
public static void addOneText(Document dom, Element p, String name, String value) {
Element e = dom.createElement(name);
Text text = dom.createTextNode(value);
e.appendChild(text);
p.appendChild(e);
}
static String createXMLTurn(
State state,
int turn,
DOMAIN domain,
HashMap<PVAR_NAME, HashMap<ArrayList<LCONST>, Object>> observStore)
throws Exception {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try {
DocumentBuilder db = dbf.newDocumentBuilder();
Document dom = db.newDocument();
Element rootEle = dom.createElement(TURN);
dom.appendChild(rootEle);
Element turnNum = dom.createElement(TURN_NUM);
Text textTurnNum = dom.createTextNode(turn + "");
turnNum.appendChild(textTurnNum);
rootEle.appendChild(turnNum);
// System.out.println("PO: " + domain._bPartiallyObserved);
if (!domain._bPartiallyObserved || observStore != null) {
for (PVAR_NAME pn :
(domain._bPartiallyObserved ? observStore.keySet() : state._state.keySet())) {
// System.out.println(turn + " check2 Partial Observ " + pn +" : "+
// domain._bPartiallyObserved);
// No problem to overwrite observations, only ever read from
if (domain._bPartiallyObserved && observStore != null)
state._observ.put(pn, observStore.get(pn));
ArrayList<ArrayList<LCONST>> gfluents = state.generateAtoms(pn);
for (ArrayList<LCONST> gfluent : gfluents) {
// for ( Map.Entry<ArrayList<LCONST>,Object> gfluent :
// (domain._bPartiallyObserved
// ? observStore.get(pn).entrySet()
// : state._state.get(pn).entrySet())) {
Element ofEle = dom.createElement(OBSERVED_FLUENT);
rootEle.appendChild(ofEle);
Element pName = dom.createElement(FLUENT_NAME);
Text pTextName = dom.createTextNode(pn.toString());
pName.appendChild(pTextName);
ofEle.appendChild(pName);
for (LCONST lc : gfluent) {
Element pArg = dom.createElement(FLUENT_ARG);
Text pTextArg = dom.createTextNode(lc.toString());
pArg.appendChild(pTextArg);
ofEle.appendChild(pArg);
}
Element pValue = dom.createElement(FLUENT_VALUE);
Object value = state.getPVariableAssign(pn, gfluent);
if (value == null) {
System.out.println("STATE:\n" + state);
throw new Exception("ERROR: Could not retrieve value for " + pn + gfluent.toString());
}
Text pTextValue = dom.createTextNode(value.toString());
pValue.appendChild(pTextValue);
ofEle.appendChild(pValue);
}
}
} else {
// No observations (first turn of POMDP)
Element ofEle = dom.createElement(NULL_OBSERVATIONS);
rootEle.appendChild(ofEle);
}
if (SHOW_XML) {
printXMLNode(dom);
System.out.println();
System.out.flush();
}
return (Client.serialize(dom));
} catch (Exception e) {
System.out.println("FATAL SERVER EXCEPTION: " + e);
e.printStackTrace();
throw e;
// System.exit(1);
// return null;
}
}