@SuppressWarnings("unchecked")
private QueryElementFactHandle createQueryResultHandle(
PropagationContext context, InternalWorkingMemory workingMemory, Object[] objects) {
QueryElementFactHandle handle = null;
ProtobufMessages.FactHandle _handle = null;
if (context.getReaderContext() != null) {
Map<TupleKey, QueryElementContext> map =
(Map<TupleKey, QueryElementContext>)
context.getReaderContext().nodeMemories.get(node.getId());
if (map != null) {
QueryElementContext _context = map.get(PersisterHelper.createTupleKey(leftTuple));
if (_context != null) {
_handle = _context.results.removeFirst();
}
}
}
if (_handle != null) {
// create a handle with the given id
handle = new QueryElementFactHandle(objects, _handle.getId(), _handle.getRecency());
} else {
handle =
new QueryElementFactHandle(
objects,
workingMemory.getFactHandleFactory().getAtomicId().incrementAndGet(),
workingMemory.getFactHandleFactory().getAtomicRecency().incrementAndGet());
}
return handle;
}
public static void writeLeftTuple(
LeftTuple leftTuple, MarshallerWriteContext context, boolean recurse) throws IOException {
ObjectOutputStream stream = context.stream;
InternalRuleBase ruleBase = context.ruleBase;
InternalWorkingMemory wm = context.wm;
LeftTupleSink sink = leftTuple.getLeftTupleSink();
switch (sink.getType()) {
case NodeTypeEnums.JoinNode:
{
// context.out.println( "JoinNode" );
for (LeftTuple childLeftTuple = leftTuple.getFirstChild();
childLeftTuple != null;
childLeftTuple = (LeftTuple) childLeftTuple.getLeftParentNext()) {
stream.writeShort(PersisterEnums.RIGHT_TUPLE);
int childSinkId = childLeftTuple.getLeftTupleSink().getId();
stream.writeInt(childSinkId);
stream.writeInt(childLeftTuple.getRightParent().getFactHandle().getId());
// context.out.println( "RightTuple int:" + childLeftTuple.getLeftTupleSink().getId() +
// " int:" + childLeftTuple.getRightParent().getFactHandle().getId() );
writeLeftTuple(childLeftTuple, context, recurse);
}
stream.writeShort(PersisterEnums.END);
// context.out.println( "JoinNode --- END" );
break;
}
case NodeTypeEnums.QueryRiaFixerNode:
case NodeTypeEnums.EvalConditionNode:
{
// context.out.println( ".... EvalConditionNode" );
for (LeftTuple childLeftTuple = leftTuple.getFirstChild();
childLeftTuple != null;
childLeftTuple = (LeftTuple) childLeftTuple.getLeftParentNext()) {
stream.writeShort(PersisterEnums.LEFT_TUPLE);
stream.writeInt(childLeftTuple.getLeftTupleSink().getId());
writeLeftTuple(childLeftTuple, context, recurse);
}
stream.writeShort(PersisterEnums.END);
// context.out.println( "---- EvalConditionNode --- END" );
break;
}
case NodeTypeEnums.NotNode:
case NodeTypeEnums.ForallNotNode:
{
if (leftTuple.getBlocker() == null) {
// is not blocked so has children
stream.writeShort(PersisterEnums.LEFT_TUPLE_NOT_BLOCKED);
for (LeftTuple childLeftTuple = leftTuple.getFirstChild();
childLeftTuple != null;
childLeftTuple = (LeftTuple) childLeftTuple.getLeftParentNext()) {
stream.writeShort(PersisterEnums.LEFT_TUPLE);
stream.writeInt(childLeftTuple.getLeftTupleSink().getId());
writeLeftTuple(childLeftTuple, context, recurse);
}
stream.writeShort(PersisterEnums.END);
} else {
stream.writeShort(PersisterEnums.LEFT_TUPLE_BLOCKED);
stream.writeInt(leftTuple.getBlocker().getFactHandle().getId());
}
break;
}
case NodeTypeEnums.ExistsNode:
{
if (leftTuple.getBlocker() == null) {
// is blocked so has children
stream.writeShort(PersisterEnums.LEFT_TUPLE_NOT_BLOCKED);
} else {
stream.writeShort(PersisterEnums.LEFT_TUPLE_BLOCKED);
stream.writeInt(leftTuple.getBlocker().getFactHandle().getId());
for (LeftTuple childLeftTuple = leftTuple.getFirstChild();
childLeftTuple != null;
childLeftTuple = (LeftTuple) childLeftTuple.getLeftParentNext()) {
stream.writeShort(PersisterEnums.LEFT_TUPLE);
stream.writeInt(childLeftTuple.getLeftTupleSink().getId());
writeLeftTuple(childLeftTuple, context, recurse);
}
stream.writeShort(PersisterEnums.END);
}
break;
}
case NodeTypeEnums.AccumulateNode:
{
// context.out.println( ".... AccumulateNode" );
// accumulate nodes generate new facts on-demand and need special procedures when
// serializing to persistent storage
AccumulateMemory memory = (AccumulateMemory) context.wm.getNodeMemory((BetaNode) sink);
AccumulateContext accctx = (AccumulateContext) leftTuple.getObject();
// first we serialize the generated fact handle
writeFactHandle(
context,
stream,
context.objectMarshallingStrategyStore,
accctx.result.getFactHandle());
// then we serialize the associated accumulation context
stream.writeObject(accctx.context);
// then we serialize the boolean propagated flag
stream.writeBoolean(accctx.propagated);
// then we serialize all the propagated tuples
for (LeftTuple childLeftTuple = leftTuple.getFirstChild();
childLeftTuple != null;
childLeftTuple = (LeftTuple) childLeftTuple.getLeftParentNext()) {
if (leftTuple.getLeftTupleSink().getId() == childLeftTuple.getLeftTupleSink().getId()) {
// this is a matching record, so, associate the right tuples
// context.out.println( "RightTuple(match) int:" +
// childLeftTuple.getLeftTupleSink().getId() + " int:" +
// childLeftTuple.getRightParent().getFactHandle().getId() );
stream.writeShort(PersisterEnums.RIGHT_TUPLE);
stream.writeInt(childLeftTuple.getRightParent().getFactHandle().getId());
} else {
// this is a propagation record
// context.out.println( "RightTuple(propagation) int:" +
// childLeftTuple.getLeftTupleSink().getId() + " int:" +
// childLeftTuple.getRightParent().getFactHandle().getId() );
stream.writeShort(PersisterEnums.LEFT_TUPLE);
int sinkId = childLeftTuple.getLeftTupleSink().getId();
stream.writeInt(sinkId);
writeLeftTuple(childLeftTuple, context, recurse);
}
}
stream.writeShort(PersisterEnums.END);
// context.out.println( "---- AccumulateNode --- END" );
break;
}
case NodeTypeEnums.RightInputAdaterNode:
{
// context.out.println( ".... RightInputAdapterNode" );
// RIANs generate new fact handles on-demand to wrap tuples and need special procedures
// when serializing to persistent storage
ObjectHashMap memory = (ObjectHashMap) context.wm.getNodeMemory((NodeMemory) sink);
InternalFactHandle ifh = (InternalFactHandle) memory.get(leftTuple);
// first we serialize the generated fact handle ID
// context.out.println( "FactHandle id:"+ifh.getId() );
stream.writeInt(ifh.getId());
stream.writeLong(ifh.getRecency());
writeRightTuples(ifh, context);
stream.writeShort(PersisterEnums.END);
// context.out.println( "---- RightInputAdapterNode --- END" );
break;
}
case NodeTypeEnums.FromNode:
{
// context.out.println( ".... FromNode" );
// FNs generate new fact handles on-demand to wrap objects and need special procedures
// when serializing to persistent storage
FromMemory memory = (FromMemory) context.wm.getNodeMemory((NodeMemory) sink);
Map<Object, RightTuple> matches = (Map<Object, RightTuple>) leftTuple.getObject();
for (RightTuple rightTuples : matches.values()) {
// first we serialize the generated fact handle ID
stream.writeShort(PersisterEnums.FACT_HANDLE);
writeFactHandle(
context,
stream,
context.objectMarshallingStrategyStore,
rightTuples.getFactHandle());
writeRightTuples(rightTuples.getFactHandle(), context);
}
stream.writeShort(PersisterEnums.END);
for (LeftTuple childLeftTuple = leftTuple.getFirstChild();
childLeftTuple != null;
childLeftTuple = (LeftTuple) childLeftTuple.getLeftParentNext()) {
stream.writeShort(PersisterEnums.RIGHT_TUPLE);
stream.writeInt(childLeftTuple.getLeftTupleSink().getId());
stream.writeInt(childLeftTuple.getRightParent().getFactHandle().getId());
// context.out.println( "RightTuple int:" + childLeftTuple.getLeftTupleSink().getId() +
// " int:" + childLeftTuple.getRightParent().getFactHandle().getId() );
writeLeftTuple(childLeftTuple, context, recurse);
}
stream.writeShort(PersisterEnums.END);
// context.out.println( "---- FromNode --- END" );
break;
}
case NodeTypeEnums.UnificationNode:
{
// context.out.println( ".... UnificationNode" );
QueryElementNode node = (QueryElementNode) sink;
boolean isOpen = node.isOpenQuery();
context.writeBoolean(isOpen);
if (isOpen) {
InternalFactHandle factHandle = (InternalFactHandle) leftTuple.getObject();
DroolsQuery query = (DroolsQuery) factHandle.getObject();
// context.out.println( "factHandle:" + factHandle );
factHandle.setObject(null);
writeFactHandle(context, stream, context.objectMarshallingStrategyStore, 0, factHandle);
factHandle.setObject(query);
writeLeftTuples(context, new InternalFactHandle[] {factHandle});
} else {
for (LeftTuple childLeftTuple = leftTuple.getFirstChild();
childLeftTuple != null;
childLeftTuple = (LeftTuple) childLeftTuple.getLeftParentNext()) {
stream.writeShort(PersisterEnums.LEFT_TUPLE);
stream.writeInt(childLeftTuple.getLeftTupleSink().getId());
InternalFactHandle factHandle = childLeftTuple.getLastHandle();
writeFactHandle(
context, stream, context.objectMarshallingStrategyStore, 1, factHandle);
writeLeftTuple(childLeftTuple, context, recurse);
}
stream.writeShort(PersisterEnums.END);
}
// context.out.println( "---- EvalConditionNode --- END" );
break;
}
case NodeTypeEnums.RuleTerminalNode:
{
// context.out.println( "RuleTerminalNode" );
int pos = context.terminalTupleMap.size();
context.terminalTupleMap.put(leftTuple, pos);
break;
}
case NodeTypeEnums.QueryTerminalNode:
{
// context.out.println( ".... QueryTerminalNode" );
// LeftTuple entry = leftTuple;
//
// // find the DroolsQuery object
// while ( entry.getParent() != null ) {
// entry = entry.getParent();
// }
//
// // Now output all the child tuples in the caller network
// DroolsQuery query = (DroolsQuery) entry.getLastHandle().getObject();
// if ( query.getQueryResultCollector() instanceof
// UnificationNodeViewChangedEventListener ) {
// context.writeBoolean( true );
// UnificationNodeViewChangedEventListener collector =
// (UnificationNodeViewChangedEventListener) query.getQueryResultCollector();
// leftTuple = collector.getLeftTuple();
//
context.writeBoolean(true);
RightTuple rightTuple = (RightTuple) leftTuple.getObject();
// context.out.println( "rightTuple:" + rightTuple.getFactHandle() );
writeFactHandle(
context,
stream,
context.objectMarshallingStrategyStore,
1,
rightTuple.getFactHandle());
for (LeftTuple childLeftTuple = rightTuple.firstChild;
childLeftTuple != null;
childLeftTuple = (LeftTuple) childLeftTuple.getRightParentNext()) {
stream.writeShort(PersisterEnums.LEFT_TUPLE);
stream.writeInt(childLeftTuple.getLeftTupleSink().getId());
writeLeftTuple(childLeftTuple, context, recurse);
}
// for ( LeftTuple childLeftTuple = leftTuple.getFirstChild();
// childLeftTuple != null; childLeftTuple = (LeftTuple) childLeftTuple.getLeftParentNext()
// ) {
// stream.writeShort( PersisterEnums.LEFT_TUPLE );
// stream.writeInt( childLeftTuple.getLeftTupleSink().getId() );
// writeFactHandle( context,
// stream,
// context.objectMarshallingStrategyStore,
// 1,
// childLeftTuple.getLastHandle() );
// writeLeftTuple( childLeftTuple,
// context,
// recurse );
// }
// } else {
// context.writeBoolean( false );
// }
stream.writeShort(PersisterEnums.END);
// context.out.println( "---- QueryTerminalNode --- END" );
break;
}
}
}
public static void readLeftTuple(LeftTuple parentLeftTuple, MarshallerReaderContext context)
throws IOException, ClassNotFoundException {
ObjectInputStream stream = context.stream;
Map<Integer, BaseNode> sinks = context.sinks;
LeftTupleSink sink = parentLeftTuple.getLeftTupleSink();
switch (sink.getType()) {
case NodeTypeEnums.JoinNode:
{
BetaMemory memory = (BetaMemory) context.wm.getNodeMemory((BetaNode) sink);
addToLeftMemory(parentLeftTuple, memory);
while (stream.readShort() == PersisterEnums.RIGHT_TUPLE) {
int childSinkId = stream.readInt();
LeftTupleSink childSink = (LeftTupleSink) sinks.get(childSinkId);
int factHandleId = stream.readInt();
RightTupleKey key = new RightTupleKey(factHandleId, sink);
RightTuple rightTuple = context.rightTuples.get(key);
LeftTuple childLeftTuple =
childSink.createLeftTuple(parentLeftTuple, rightTuple, null, null, childSink, true);
readLeftTuple(childLeftTuple, context);
}
break;
}
case NodeTypeEnums.EvalConditionNode:
{
while (stream.readShort() == PersisterEnums.LEFT_TUPLE) {
LeftTupleSink childSink = (LeftTupleSink) sinks.get(stream.readInt());
LeftTuple childLeftTuple = childSink.createLeftTuple(parentLeftTuple, childSink, true);
readLeftTuple(childLeftTuple, context);
}
break;
}
case NodeTypeEnums.NotNode:
case NodeTypeEnums.ForallNotNode:
{
BetaMemory memory = (BetaMemory) context.wm.getNodeMemory((BetaNode) sink);
int type = stream.readShort();
if (type == PersisterEnums.LEFT_TUPLE_NOT_BLOCKED) {
addToLeftMemory(parentLeftTuple, memory);
while (stream.readShort() == PersisterEnums.LEFT_TUPLE) {
LeftTupleSink childSink = (LeftTupleSink) sinks.get(stream.readInt());
LeftTuple childLeftTuple =
childSink.createLeftTuple(parentLeftTuple, childSink, true);
readLeftTuple(childLeftTuple, context);
}
} else {
int factHandleId = stream.readInt();
RightTupleKey key = new RightTupleKey(factHandleId, sink);
RightTuple rightTuple = context.rightTuples.get(key);
parentLeftTuple.setBlocker(rightTuple);
rightTuple.addBlocked(parentLeftTuple);
}
break;
}
case NodeTypeEnums.ExistsNode:
{
BetaMemory memory = (BetaMemory) context.wm.getNodeMemory((BetaNode) sink);
int type = stream.readShort();
if (type == PersisterEnums.LEFT_TUPLE_NOT_BLOCKED) {
addToLeftMemory(parentLeftTuple, memory);
} else {
int factHandleId = stream.readInt();
RightTupleKey key = new RightTupleKey(factHandleId, sink);
RightTuple rightTuple = context.rightTuples.get(key);
parentLeftTuple.setBlocker(rightTuple);
rightTuple.addBlocked(parentLeftTuple);
while (stream.readShort() == PersisterEnums.LEFT_TUPLE) {
LeftTupleSink childSink = (LeftTupleSink) sinks.get(stream.readInt());
LeftTuple childLeftTuple =
childSink.createLeftTuple(parentLeftTuple, childSink, true);
readLeftTuple(childLeftTuple, context);
}
}
break;
}
case NodeTypeEnums.AccumulateNode:
{
// accumulate nodes generate new facts on-demand and need special procedures when
// de-serializing from persistent storage
AccumulateMemory memory = (AccumulateMemory) context.wm.getNodeMemory((BetaNode) sink);
memory.betaMemory.getLeftTupleMemory().add(parentLeftTuple);
AccumulateContext accctx = new AccumulateContext();
parentLeftTuple.setObject(accctx);
// first we de-serialize the generated fact handle
InternalFactHandle handle = readFactHandle(context);
accctx.result = new RightTuple(handle, (RightTupleSink) sink);
// then we de-serialize the associated accumulation context
accctx.context = (Serializable[]) stream.readObject();
// then we de-serialize the boolean propagated flag
accctx.propagated = stream.readBoolean();
// then we de-serialize all the propagated tuples
short head = -1;
while ((head = stream.readShort()) != PersisterEnums.END) {
switch (head) {
case PersisterEnums.RIGHT_TUPLE:
{
int factHandleId = stream.readInt();
RightTupleKey key = new RightTupleKey(factHandleId, sink);
RightTuple rightTuple = context.rightTuples.get(key);
// just wiring up the match record
sink.createLeftTuple(parentLeftTuple, rightTuple, null, null, sink, true);
break;
}
case PersisterEnums.LEFT_TUPLE:
{
int sinkId = stream.readInt();
LeftTupleSink childSink = (LeftTupleSink) sinks.get(sinkId);
LeftTuple childLeftTuple =
new LeftTupleImpl(parentLeftTuple, accctx.result, childSink, true);
readLeftTuple(childLeftTuple, context);
break;
}
default:
{
throw new RuntimeDroolsException(
"Marshalling error. This is a bug. Please contact the development team.");
}
}
}
break;
}
case NodeTypeEnums.RightInputAdaterNode:
{
// RIANs generate new fact handles on-demand to wrap tuples and need special procedures
// when de-serializing from persistent storage
ObjectHashMap memory = (ObjectHashMap) context.wm.getNodeMemory((NodeMemory) sink);
// create fact handle
int id = stream.readInt();
long recency = stream.readLong();
InternalFactHandle handle =
new DefaultFactHandle(
id,
parentLeftTuple,
recency,
context.wm.getEntryPoints().get(EntryPoint.DEFAULT.getEntryPointId()));
memory.put(parentLeftTuple, handle);
readRightTuples(handle, context);
stream.readShort(); // Persistence.END
break;
}
case NodeTypeEnums.FromNode:
{
// context.out.println( "FromNode" );
// FNs generate new fact handles on-demand to wrap objects and need special procedures
// when serializing to persistent storage
FromMemory memory = (FromMemory) context.wm.getNodeMemory((NodeMemory) sink);
memory.betaMemory.getLeftTupleMemory().add(parentLeftTuple);
Map<Object, RightTuple> matches = new LinkedHashMap<Object, RightTuple>();
parentLeftTuple.setObject(matches);
while (stream.readShort() == PersisterEnums.FACT_HANDLE) {
// we de-serialize the generated fact handle ID
InternalFactHandle handle = readFactHandle(context);
context.handles.put(handle.getId(), handle);
readRightTuples(handle, context);
matches.put(handle.getObject(), handle.getFirstRightTuple());
}
while (stream.readShort() == PersisterEnums.RIGHT_TUPLE) {
LeftTupleSink childSink = (LeftTupleSink) sinks.get(stream.readInt());
int factHandleId = stream.readInt();
RightTupleKey key =
new RightTupleKey(
factHandleId, null); // created tuples in from node always use null sink
RightTuple rightTuple = context.rightTuples.get(key);
LeftTuple childLeftTuple =
new LeftTupleImpl(parentLeftTuple, rightTuple, childSink, true);
readLeftTuple(childLeftTuple, context);
}
// context.out.println( "FromNode --- END" );
break;
}
case NodeTypeEnums.UnificationNode:
{
boolean isOpen = context.readBoolean();
if (isOpen) {
QueryElementNode node = (QueryElementNode) sink;
InternalFactHandle handle = readFactHandle(context);
context.handles.put(handle.getId(), handle);
node.createDroolsQuery(parentLeftTuple, handle, context.wm);
readLeftTuples(context);
} else {
while (stream.readShort() == PersisterEnums.LEFT_TUPLE) {
LeftTupleSink childSink = (LeftTupleSink) sinks.get(stream.readInt());
// we de-serialize the generated fact handle ID
InternalFactHandle handle = readFactHandle(context);
context.handles.put(handle.getId(), handle);
RightTuple rightTuple = new RightTuple(handle);
// @TODO check if open query
LeftTuple childLeftTuple =
new LeftTupleImpl(parentLeftTuple, rightTuple, childSink, true);
readLeftTuple(childLeftTuple, context);
}
}
break;
}
case NodeTypeEnums.RuleTerminalNode:
{
int pos = context.terminalTupleMap.size();
context.terminalTupleMap.put(pos, parentLeftTuple);
break;
}
case NodeTypeEnums.QueryTerminalNode:
{
boolean unificationNode = context.readBoolean();
if (unificationNode) {
// we de-serialize the generated fact handle ID
InternalFactHandle handle = readFactHandle(context);
context.handles.put(handle.getId(), handle);
RightTuple rightTuple = new RightTuple(handle);
parentLeftTuple.setObject(rightTuple);
LeftTuple entry = parentLeftTuple;
// find the DroolsQuery object
while (entry.getParent() != null) {
entry = entry.getParent();
}
DroolsQuery query = (DroolsQuery) entry.getLastHandle().getObject();
LeftTuple leftTuple =
((UnificationNodeViewChangedEventListener) query.getQueryResultCollector())
.getLeftTuple();
while (stream.readShort() == PersisterEnums.LEFT_TUPLE) {
LeftTupleSink childSink = (LeftTupleSink) sinks.get(stream.readInt());
// @TODO check if open query!!!
LeftTuple childLeftTuple =
childSink.createLeftTuple(leftTuple, rightTuple, childSink);
readLeftTuple(childLeftTuple, context);
}
}
break;
}
}
}