@Override
public final CacheEntry wrapEntryForReading(InvocationContext ctx, Object key)
throws InterruptedException {
CacheEntry cacheEntry = getFromContext(ctx, key);
if (cacheEntry == null) {
cacheEntry = getFromContainer(key);
// do not bother wrapping though if this is not in a tx. repeatable read etc are all
// meaningless unless there is a tx.
if (useRepeatableRead) {
MVCCEntry mvccEntry =
cacheEntry == null
? createWrappedEntry(key, null, null, false, false, -1)
: createWrappedEntry(
key,
cacheEntry.getValue(),
cacheEntry.getVersion(),
false,
false,
cacheEntry.getLifespan());
if (mvccEntry != null) ctx.putLookedUpEntry(key, mvccEntry);
return mvccEntry;
} else if (cacheEntry
!= null) { // if not in transaction and repeatable read, or simply read committed
// (regardless of whether in TX or not), do not wrap
ctx.putLookedUpEntry(key, cacheEntry);
}
return cacheEntry;
}
return cacheEntry;
}
private MVCCEntry wrapMvccEntryForRemove(
InvocationContext ctx, Object key, CacheEntry cacheEntry) {
MVCCEntry mvccEntry =
createWrappedEntry(
key,
cacheEntry.getValue(),
cacheEntry.getVersion(),
false,
true,
cacheEntry.getLifespan());
ctx.putLookedUpEntry(key, mvccEntry);
return mvccEntry;
}
@Override
protected void commitContextEntry(
CacheEntry entry, InvocationContext ctx, FlagAffectedCommand command) {
if (ctx.isInTxScope() && !isFromStateTransfer(ctx)) {
EntryVersion version =
((TxInvocationContext) ctx)
.getCacheTransaction()
.getUpdatedEntryVersions()
.get(entry.getKey());
cdl.commitEntry(entry, version, command, ctx);
} else {
// This could be a state transfer call!
cdl.commitEntry(entry, entry.getVersion(), command, ctx);
}
}
@Override
protected void commitContextEntry(
CacheEntry entry, InvocationContext ctx, boolean skipOwnershipCheck) {
if (ctx.isInTxScope()) {
ClusteredRepeatableReadEntry clusterMvccEntry = (ClusteredRepeatableReadEntry) entry;
EntryVersion existingVersion = clusterMvccEntry.getVersion();
EntryVersion newVersion;
if (existingVersion == null) {
newVersion = versionGenerator.generateNew();
} else {
newVersion = versionGenerator.increment((IncrementableEntryVersion) existingVersion);
}
commitEntry(entry, newVersion, skipOwnershipCheck);
} else {
// This could be a state transfer call!
commitEntry(entry, entry.getVersion(), skipOwnershipCheck);
}
}
@SuppressWarnings("UnusedParameters")
protected EntryVersion getEntryVersion(InvocationContext ctx, Object key) {
CacheEntry cacheEntry = dataContainer.get(key);
return (cacheEntry != null) ? cacheEntry.getVersion() : null;
}
