/** {@inheritDoc} */
public Document encodeXML() throws InvalidLLRPMessageException {
try {
Namespace ns = Namespace.getNamespace("llrp", LLRPConstants.LLRPNAMESPACE);
Element root = new Element("GET_ACCESSSPECS_RESPONSE", ns);
// Element root = new Element("GET_ACCESSSPECS_RESPONSE");
root.addNamespaceDeclaration(Namespace.getNamespace("llrp", LLRPConstants.LLRPNAMESPACE));
if (version == null) {
throw new InvalidLLRPMessageException("Version not set");
} else {
root.setAttribute("Version", version.toInteger().toString());
}
if (messageID == null) {
throw new InvalidLLRPMessageException("MessageID not set");
} else {
root.setAttribute("MessageID", messageID.toString(10));
}
// parameters
if (lLRPStatus == null) {
LOGGER.info("lLRPStatus not set");
throw new MissingParameterException("lLRPStatus not set");
} else {
root.addContent(lLRPStatus.encodeXML(lLRPStatus.getClass().getSimpleName(), ns));
}
if (accessSpecList == null) {
LOGGER.info("accessSpecList not set");
} else {
for (AccessSpec field : accessSpecList) {
root.addContent(
field.encodeXML(
field
.getClass()
.getName()
.replaceAll(field.getClass().getPackage().getName() + ".", ""),
ns));
}
}
Document doc = new Document(root);
if (isValidXMLMessage(doc, LLRPConstants.LLRPMESSAGESCHEMAPATH)) {
return doc;
} else {
return null;
}
} catch (IllegalArgumentException e) {
throw new InvalidLLRPMessageException(e.getMessage());
} catch (MissingParameterException e) {
throw new InvalidLLRPMessageException(e.getMessage());
}
}
/** {@inheritDoc} */
protected LLRPBitList encodeBinarySpecific() throws InvalidLLRPMessageException {
LLRPBitList resultBits = new LLRPBitList();
if (lLRPStatus == null) {
// single parameter, may not be null
LOGGER.warn(" lLRPStatus not set");
throw new InvalidLLRPMessageException(" lLRPStatus not set");
} else {
resultBits.append(lLRPStatus.encodeBinary());
}
if (accessSpecList == null) {
// just warn - it is optional
LOGGER.info(" accessSpecList not set");
} else {
for (AccessSpec field : accessSpecList) {
resultBits.append(field.encodeBinary());
}
}
return resultBits;
}
/** {@inheritDoc} */
protected void decodeBinarySpecific(LLRPBitList binary) throws InvalidLLRPMessageException {
int position = 0;
int tempByteLength;
int tempLength = 0;
int count;
SignedShort type;
int fieldCount;
Custom custom;
// look ahead to see type
// may be optional or exactly once
type = null;
tempByteLength = 0;
tempLength = 0;
try {
// if first bit is one it is a TV Parameter
if (binary.get(position)) {
// do not take the first bit as it is always 1
type = new SignedShort(binary.subList(position + 1, 7));
} else {
type = new SignedShort(binary.subList(position + RESERVEDLENGTH, TYPENUMBERLENGTH));
tempByteLength =
new UnsignedShort(
binary.subList(
position + RESERVEDLENGTH + TYPENUMBERLENGTH, UnsignedShort.length()))
.toShort();
tempLength = 8 * tempByteLength;
}
} catch (IllegalArgumentException le) {
// if an IllegalArgumentException is thrown, list was not long enough so the parameter is
// missing
LOGGER.warn("GET_ACCESSSPECS_RESPONSE misses non optional parameter of type LLRPStatus");
throw new InvalidLLRPMessageException(
"GET_ACCESSSPECS_RESPONSE misses non optional parameter of type LLRPStatus");
}
if (binary.get(position)) {
// length can statically be determined for TV Parameters
tempLength = lLRPStatus.length();
}
if ((type != null) && type.equals(LLRPStatus.TYPENUM)) {
lLRPStatus = new LLRPStatus(binary.subList(position, tempLength));
position += tempLength;
LOGGER.debug(" lLRPStatus is instantiated with LLRPStatus with length" + tempLength);
} else {
LOGGER.warn("GET_ACCESSSPECS_RESPONSE misses non optional parameter of type LLRPStatus");
throw new InvalidLLRPMessageException(
"GET_ACCESSSPECS_RESPONSE misses non optional parameter of type LLRPStatus");
}
// list of parameters
accessSpecList = new LinkedList<AccessSpec>();
LOGGER.debug("decoding parameter accessSpecList ");
while (position < binary.length()) {
// store if one parameter matched
boolean atLeastOnce = false;
// look ahead to see type
// if first bit is one it is a TV Parameter
if (binary.get(position)) {
// do not take the first bit as it is always 1
type = new SignedShort(binary.subList(position + 1, 7));
} else {
type = new SignedShort(binary.subList(position + RESERVEDLENGTH, TYPENUMBERLENGTH));
tempByteLength =
new UnsignedShort(
binary.subList(
position + RESERVEDLENGTH + TYPENUMBERLENGTH, UnsignedShort.length()))
.toShort();
tempLength = 8 * tempByteLength;
}
// add parameter to list if type number matches
if ((type != null) && type.equals(AccessSpec.TYPENUM)) {
// if first bit is 1 it is a TV Parameter
if (binary.get(position)) {
// length can statically be determined for TV Parameters
tempLength = AccessSpec.length();
}
accessSpecList.add(new AccessSpec(binary.subList(position, tempLength)));
LOGGER.debug("adding AccessSpec to accessSpecList ");
atLeastOnce = true;
position += tempLength;
}
if (!atLeastOnce) {
// no parameter matched therefore we jump out of the loop
break;
}
}
// if list is still empty no parameter matched
if (accessSpecList.isEmpty()) {
LOGGER.info("encoded message does not contain parameter for optional accessSpecList");
}
}