/**
* In case of a remotely originating transactions we don't have a chance to visit the single
* commands but receive this "batch". We then need the before-apply snapshot of some types to
* route the cleanup commands to the correct indexes. Note we don't need to visit the
* CommitCommand as the indexing context is registered as a transaction sync.
*/
@Override
public Object visitPrepareCommand(TxInvocationContext ctx, PrepareCommand command)
throws Throwable {
final WriteCommand[] writeCommands = command.getModifications();
final Object[] stateBeforePrepare = new Object[writeCommands.length];
for (int i = 0; i < writeCommands.length; i++) {
final WriteCommand writeCommand = writeCommands[i];
if (writeCommand instanceof PutKeyValueCommand) {
InternalCacheEntry internalCacheEntry =
dataContainer.get(((PutKeyValueCommand) writeCommand).getKey());
stateBeforePrepare[i] = internalCacheEntry != null ? internalCacheEntry.getValue() : null;
} else if (writeCommand instanceof PutMapCommand) {
stateBeforePrepare[i] = getPreviousValues(((PutMapCommand) writeCommand).getMap().keySet());
} else if (writeCommand instanceof RemoveCommand) {
InternalCacheEntry internalCacheEntry =
dataContainer.get(((RemoveCommand) writeCommand).getKey());
stateBeforePrepare[i] = internalCacheEntry != null ? internalCacheEntry.getValue() : null;
} else if (writeCommand instanceof ReplaceCommand) {
InternalCacheEntry internalCacheEntry =
dataContainer.get(((ReplaceCommand) writeCommand).getKey());
stateBeforePrepare[i] = internalCacheEntry != null ? internalCacheEntry.getValue() : null;
}
}
final Object toReturn = super.visitPrepareCommand(ctx, command);
if (ctx.isTransactionValid()) {
final TransactionContext transactionContext = makeTransactionalEventContext();
for (int i = 0; i < writeCommands.length; i++) {
final WriteCommand writeCommand = writeCommands[i];
if (writeCommand instanceof PutKeyValueCommand) {
processPutKeyValueCommand(
(PutKeyValueCommand) writeCommand, ctx, stateBeforePrepare[i], transactionContext);
} else if (writeCommand instanceof PutMapCommand) {
processPutMapCommand(
(PutMapCommand) writeCommand,
ctx,
(Map<Object, Object>) stateBeforePrepare[i],
transactionContext);
} else if (writeCommand instanceof RemoveCommand) {
processRemoveCommand(
(RemoveCommand) writeCommand, ctx, stateBeforePrepare[i], transactionContext);
} else if (writeCommand instanceof ReplaceCommand) {
processReplaceCommand(
(ReplaceCommand) writeCommand, ctx, stateBeforePrepare[i], transactionContext);
} else if (writeCommand instanceof ClearCommand) {
processClearCommand((ClearCommand) writeCommand, ctx, transactionContext);
}
}
}
return toReturn;
}
@Override
public Object visitPutMapCommand(InvocationContext ctx, PutMapCommand command) throws Throwable {
Map<Object, Object> previousValues = (Map<Object, Object>) invokeNextInterceptor(ctx, command);
processPutMapCommand(command, ctx, previousValues, null);
return previousValues;
}