private void updateTransactionVersion(InvocationContext context) {
if (!context.isInTxScope() && !context.isOriginLocal()) {
return;
}
if (context instanceof SingleKeyNonTxInvocationContext) {
if (log.isDebugEnabled()) {
log.debugf(
"Received a SingleKeyNonTxInvocationContext... This should be a single read operation");
}
return;
}
TxInvocationContext txInvocationContext = (TxInvocationContext) context;
List<EntryVersion> entryVersionList = new LinkedList<EntryVersion>();
entryVersionList.add(txInvocationContext.getTransactionVersion());
if (log.isTraceEnabled()) {
log.tracef(
"[%s] Keys read in this command: %s",
txInvocationContext.getGlobalTransaction().prettyPrint(),
txInvocationContext.getKeysReadInCommand());
}
for (InternalGMUCacheEntry internalGMUCacheEntry :
txInvocationContext.getKeysReadInCommand().values()) {
Object key = internalGMUCacheEntry.getKey();
boolean local = cll.localNodeIsOwner(key);
if (log.isTraceEnabled()) {
log.tracef(
"[%s] Analyze entry [%s]: local?=%s",
txInvocationContext.getGlobalTransaction().prettyPrint(), internalGMUCacheEntry, local);
}
if (txInvocationContext.hasModifications() && !internalGMUCacheEntry.isMostRecent()) {
throw new CacheException("Read-Write transaction read an old value and should rollback");
}
if (internalGMUCacheEntry.getMaximumTransactionVersion() != null) {
entryVersionList.add(internalGMUCacheEntry.getMaximumTransactionVersion());
}
txInvocationContext.getCacheTransaction().addReadKey(key);
if (local) {
txInvocationContext.setAlreadyReadOnThisNode(true);
txInvocationContext.addReadFrom(cll.getAddress());
}
}
if (entryVersionList.size() > 1) {
EntryVersion[] txVersionArray = new EntryVersion[entryVersionList.size()];
txInvocationContext.setTransactionVersion(
versionGenerator.mergeAndMax(entryVersionList.toArray(txVersionArray)));
}
}
