private void buildFieldsDefsExtension(Map<Integer, CompositeDef> existingCodecs) {
NodeList messageExtList = doc.getElementsByTagName(ELEMENT_MESSAGE_EXT);
Map<Integer, CompositeDef> extensions = new TreeMap<>();
for (int i = 0; i < messageExtList.getLength(); i++) {
Element messageDef = (Element) messageExtList.item(i);
Integer mtiExisting = getOptionalInteger(messageDef, ATTR_EXTENDS);
Integer mti = getOptionalInteger(messageDef, ATTR_MTI);
if (existingCodecs.containsKey(mti) || extensions.containsKey(mti)) {
throw new ConfigException(format("Duplicate message config for mti %d", mti));
}
CompositeDef existing = existingCodecs.get(mtiExisting);
if (existing == null) {
throw new ConfigException(format("Error extending mti %d, no config available", mti));
}
SortedMap<Integer, ComponentDef> clonedFieldsDef =
cloneSubComponentDefs(existing.getSubComponentDefs());
Element setElement = null;
Element removeElement = null;
for (Element e : getSubElements(messageDef)) {
switch (e.getTagName()) {
case ELEMENT_SET:
setElement = e;
break;
case ELEMENT_REMOVE:
removeElement = e;
break;
default:
throw new ConfigException(
format("Unknown message extension instruction %s", e.getTagName()));
}
}
if (setElement != null) {
setVarFields(clonedFieldsDef, getSubElements(setElement));
}
if (removeElement != null) {
removeFields(clonedFieldsDef, getSubElements(removeElement));
}
extensions.put(
mti,
new CompositeDef(
clonedFieldsDef,
existing.getCompositeCodec(),
existing.isMandatory(),
existing.getLengthCodec()));
}
existingCodecs.putAll(extensions);
}
/**
* @param bitmapCodec
* @return
*/
private Map<Integer, CompositeDef> buildFieldsDefs(BitmapCodec bitmapCodec) {
NodeList messageList = doc.getElementsByTagName(ELEMENT_MESSAGE);
Map<Integer, CompositeDef> defs = new TreeMap<>();
for (int i = 0; i < messageList.getLength(); i++) {
Element messageDef = (Element) messageList.item(i);
Integer mti = getOptionalInteger(messageDef, ATTR_MTI);
if (defs.containsKey(mti)) {
throw new ConfigException(format("Duplicate message config for mti %d", mti));
}
SortedMap<Integer, ComponentDef> messageFieldDefs = buildVarComponents(messageDef);
if (messageFieldDefs.containsKey(1)) {
throw new ConfigException("Message field with index 1 not allowed");
}
defs.put(
mti,
new CompositeDef(
messageFieldDefs, new VarCompositeCodec(bitmapCodec, defaultFailFast), true));
}
return defs;
}