/**
* {@inheritDoc}
*
* @param raw Description of the Parameter
* @return Description of the Return Value
*/
protected boolean handleElement(Element raw) {
if (super.handleElement(raw)) {
return true;
}
XMLElement elem = (XMLElement) raw;
if (DEST_PID_TAG.equals(elem.getName())) {
try {
URI pID = new URI(elem.getTextValue());
setDestPeerID((PeerID) IDFactory.fromURI(pID));
} catch (URISyntaxException badID) {
throw new IllegalArgumentException("Bad PeerID in advertisement");
} catch (ClassCastException badID) {
throw new IllegalArgumentException("ID in advertisement is not a peer id");
}
return true;
}
if (elem.getName().equals("Dst")) {
for (Enumeration eachXpt = elem.getChildren(); eachXpt.hasMoreElements(); ) {
TextElement aXpt = (TextElement) eachXpt.nextElement();
AccessPointAdvertisement xptAdv =
(AccessPointAdvertisement) AdvertisementFactory.newAdvertisement(aXpt);
setDest(xptAdv);
}
return true;
}
if (elem.getName().equals("Hops")) {
Vector hops = new Vector();
for (Enumeration eachXpt = elem.getChildren(); eachXpt.hasMoreElements(); ) {
TextElement aXpt = (TextElement) eachXpt.nextElement();
AccessPointAdvertisement xptAdv =
(AccessPointAdvertisement) AdvertisementFactory.newAdvertisement(aXpt);
hops.addElement(xptAdv);
}
setHops(hops);
return true;
}
return false;
}
/**
* Called by the XML implementation to signal the end of an XML entity.
*
* @param e The XML entity that ends.
* @throws SAXException on any error
*/
public void handleEndElement(XMLElement e) throws SAXException {
try {
switch (tokens.toToken(e.getName(), false)) {
case TodoTokenTable.TOKEN_TO_DO:
case TodoTokenTable.TOKEN_RESOLVEDCRITICS:
case TodoTokenTable.TOKEN_TO_DO_LIST:
// NOP
break;
case TodoTokenTable.TOKEN_TO_DO_ITEM:
handleTodoItemEnd(e);
break;
case TodoTokenTable.TOKEN_HEADLINE:
handleHeadline(e);
break;
case TodoTokenTable.TOKEN_DESCRIPTION:
handleDescription(e);
break;
case TodoTokenTable.TOKEN_PRIORITY:
handlePriority(e);
break;
case TodoTokenTable.TOKEN_MOREINFOURL:
handleMoreInfoURL(e);
break;
case TodoTokenTable.TOKEN_ISSUE:
handleIssueEnd(e);
break;
case TodoTokenTable.TOKEN_POSTER:
handlePoster(e);
break;
case TodoTokenTable.TOKEN_OFFENDER:
handleOffender(e);
break;
default:
LOG.log(Level.WARNING, "WARNING: unknown end tag:" + e.getName());
break;
}
} catch (Exception ex) {
throw new SAXException(ex);
}
}
/**
* Process an individual element from the document during parse. Normally, implementations will
* allow the base advertisments a chance to handle the element before attempting ot handle the
* element themselves. ie.
*
* <p>
*
* <p>
*
* <pre><code>
* protected boolean handleElement(Element elem) {
* <p/>
* if (super.handleElement()) {
* // it's been handled.
* return true;
* }
* <p/>
* <i>... handle elements here ...</i>
* <p/>
* // we don't know how to handle the element
* return false;
* }
* </code></pre>
*
* @param elem the element to be processed.
* @return true if the element was recognized, otherwise false.
*/
protected boolean handleElement(XMLElement elem) {
String value = elem.getTextValue();
if (null == value) {
return false;
}
value = value.trim();
if (0 == value.length()) {
return false;
}
if (elem.getName().equals(typeTag)) {
setDiscoveryType(Integer.parseInt(value));
return true;
}
if (elem.getName().equals(thresholdTag)) {
setThreshold(Integer.parseInt(value));
return true;
}
if (elem.getName().equals(peerAdvTag)) {
try {
XMLDocument asDoc =
(XMLDocument)
StructuredDocumentFactory.newStructuredDocument(
MimeMediaType.XMLUTF8, new StringReader(value));
PeerAdvertisement adv = (PeerAdvertisement) AdvertisementFactory.newAdvertisement(asDoc);
setPeerAdvertisement(adv);
return true;
} catch (IOException failed) {
IllegalArgumentException failure = new IllegalArgumentException("Bad Peer Advertisement");
failure.initCause(failed);
throw failure;
}
}
if (elem.getName().equals(queryAttrTag)) {
setAttr(value);
return true;
}
if (elem.getName().equals(queryValueTag)) {
setValue(value);
return true;
}
// element was not handled
return false;
}
/**
* Writes an XML element.
*
* @param xml the non-null XML element to write.
* @param indent how many spaces to indent the element.
*/
public void write(XMLElement xml, int indent) throws IOException {
for (int i = 0; i < indent; i++) {
this.writer.print(' ');
}
if (xml.getName() == null) {
if (xml.getContent() != null) {
this.writeEncoded(xml.getContent()); // aspect(xml.getContent(), "xml.getContent() - 111");
this.writer.println();
}
} else {
this.writer.print('<');
this.writer.print(xml.getName()); // aspect(xml.getName(), "xml.getName() - 116");
Enumeration _enum = xml._enumerateAttributeNames();
while (_enum.hasMoreElements()) {
String key = (String) _enum.nextElement();
String value = xml.getAttribute(key);
this.writer.print(" " + key + "=\""); // aspect(key, "key - 122");
this.writeEncoded(value); // aspect(value, "value - 123");
this.writer.print('"');
}
if ((xml.getContent() != null) && (xml.getContent().length() > 0)) {
writer.print('>');
this.writeEncoded(xml.getContent()); // aspect(xml.getContent(), "xml.getContent() - 130");
writer.println("</" + xml.getName() + '>'); // aspect(xml.getName(), "xml.getName() - 131");
} else if (xml.hasChildren()) {
writer.println('>');
_enum = xml._enumerateChildren();
while (_enum.hasMoreElements()) {
XMLElement child = (XMLElement) _enum.nextElement();
this.write(child, indent + 4);
}
for (int i = 0; i < indent; i++) {
this.writer.print(' ');
}
this.writer.println(
"</" + xml.getName() + ">"); // aspect(xml.getName(), "xml.getName() - 138");
} else {
this.writer.println("/>");
}
}
this.writer.flush();
}
/**
* Intialize a Discovery Query from a portion of a structured document.
*
* @param root document to intialize from
*/
protected void initialize(Element root) {
if (!XMLElement.class.isInstance(root)) {
throw new IllegalArgumentException(getClass().getName() + " only supports XMLElement");
}
XMLElement doc = (XMLElement) root;
if (!doc.getName().equals(getAdvertisementType())) {
throw new IllegalArgumentException(
"Could not construct : "
+ getClass().getName()
+ "from doc containing a "
+ doc.getName());
}
setDiscoveryType(-1); // force illegal value;
Enumeration<XMLElement> elements = doc.getChildren();
while (elements.hasMoreElements()) {
XMLElement elem = elements.nextElement();
if (!handleElement(elem)) {
if (Logging.SHOW_FINE && LOG.isLoggable(Level.FINE)) {
LOG.fine("Unhandled Element : " + elem.toString());
}
}
}
// sanity check time!
if ((DiscoveryService.PEER != getDiscoveryType())
&& (DiscoveryService.GROUP != getDiscoveryType())
&& (DiscoveryService.ADV != getDiscoveryType())) {
throw new IllegalArgumentException("Type is not one of the required values.");
}
if (getThreshold() < 0) {
throw new IllegalArgumentException("Threshold must not be less than zero.");
}
if ((getDiscoveryType() != DiscoveryService.PEER) && (getThreshold() == 0)) {
throw new IllegalArgumentException("Threshold may not be zero.");
}
if ((null == getAttr()) && (null != getValue())) {
throw new IllegalArgumentException("Value specified without attribute.");
}
}
/**
* Private constructor. Use instantiator
*
* @param root Description of the Parameter
*/
private RouteAdv(Element root) {
if (!XMLElement.class.isInstance(root)) {
throw new IllegalArgumentException(getClass().getName() + " only supports XLMElement");
}
XMLElement doc = (XMLElement) root;
String doctype = doc.getName();
String typedoctype = "";
Attribute itsType = doc.getAttribute("type");
if (null != itsType) {
typedoctype = itsType.getValue();
}
if (!doctype.equals(getAdvertisementType()) && !getAdvertisementType().equals(typedoctype)) {
throw new IllegalArgumentException(
"Could not construct : "
+ getClass().getName()
+ "from doc containing a "
+ doc.getName());
}
Enumeration elements = doc.getChildren();
while (elements.hasMoreElements()) {
XMLElement elem = (XMLElement) elements.nextElement();
if (!handleElement(elem)) {
if (LOG.isEnabledFor(Level.DEBUG)) {
LOG.debug("Unhandled Element: " + elem.toString());
}
}
}
// HACK Compatibility
setDestPeerID(getDestPeerID());
// Sanity Check!!!
if (hasALoop()) {
throw new IllegalArgumentException("Route contains a loop!");
}
}
/**
* Called by the XML implementation to signal the start of an XML entity.
*
* @param e The entity being started.
*/
public void handleStartElement(XMLElement e) {
// cat.debug("NOTE: TodoParser handleStartTag:" + e.getName());
try {
switch (tokens.toToken(e.getName(), true)) {
case TodoTokenTable.TOKEN_HEADLINE:
case TodoTokenTable.TOKEN_DESCRIPTION:
case TodoTokenTable.TOKEN_PRIORITY:
case TodoTokenTable.TOKEN_MOREINFOURL:
case TodoTokenTable.TOKEN_POSTER:
case TodoTokenTable.TOKEN_OFFENDER:
// NOP
break;
case TodoTokenTable.TOKEN_TO_DO:
handleTodo(e);
break;
case TodoTokenTable.TOKEN_TO_DO_LIST:
handleTodoList(e);
break;
case TodoTokenTable.TOKEN_TO_DO_ITEM:
handleTodoItemStart(e);
break;
case TodoTokenTable.TOKEN_RESOLVEDCRITICS:
handleResolvedCritics(e);
break;
case TodoTokenTable.TOKEN_ISSUE:
handleIssueStart(e);
break;
default:
LOG.log(Level.WARNING, "WARNING: unknown tag:" + e.getName());
break;
}
} catch (Exception ex) {
LOG.log(Level.SEVERE, "Exception in startelement", ex);
}
}
/**
* This method is called when the end of an XML elemnt is encountered.
*
* @see #startElement
* @param name the name of the element
* @param nsPrefix the prefix used to identify the namespace
* @param nsSystemID the system ID associated with the namespace
*/
public void endElement(String name, String nsPrefix, String nsSystemID) {
XMLElement elt = (XMLElement) this.stack.pop();
if (elt.getChildrenCount() == 1) {
XMLElement child = elt.getChildAtIndex(0);
if (child.getName() == null) {
elt.setContent(child.getContent());
elt.removeChildAtIndex(0);
}
}
}
