Exemplo n.º 1
0
  public static void dpUpdatesReorderRightMemory(BetaMemory bm, RightTupleSets srcRightTuples) {
    RightTupleMemory rtm = bm.getRightTupleMemory();

    for (RightTuple rightTuple = srcRightTuples.getUpdateFirst(); rightTuple != null; ) {
      RightTuple next = rightTuple.getStagedNext();
      if (rightTuple.getMemory() != null) {
        rightTuple.setTempRightTupleMemory(rightTuple.getMemory());
        rtm.remove(rightTuple);
      }
      rightTuple = next;
    }

    for (RightTuple rightTuple = srcRightTuples.getUpdateFirst(); rightTuple != null; ) {
      RightTuple next = rightTuple.getStagedNext();
      if (rightTuple.getTempRightTupleMemory() != null) {
        rtm.add(rightTuple);
        for (LeftTuple childLeftTuple = rightTuple.getFirstChild(); childLeftTuple != null; ) {
          LeftTuple childNext = childLeftTuple.getRightParentNext();
          childLeftTuple.reAddLeft();
          childLeftTuple = childNext;
        }
      }
      rightTuple = next;
    }
  }
Exemplo n.º 2
0
  public static void findLeftTupleBlocker(
      BetaNode betaNode,
      RightTupleMemory rtm,
      ContextEntry[] contextEntry,
      BetaConstraints constraints,
      LeftTuple leftTuple,
      FastIterator it,
      PropagationContext context,
      boolean useLeftMemory) {
    // This method will also remove rightTuples that are from subnetwork where no leftmemory use
    // used

    for (RightTuple rightTuple = betaNode.getFirstRightTuple(leftTuple, rtm, null, it);
        rightTuple != null; ) {
      RightTuple nextRight = (RightTuple) it.next(rightTuple);
      if (constraints.isAllowedCachedLeft(contextEntry, rightTuple.getFactHandle())) {
        leftTuple.setBlocker(rightTuple);

        if (useLeftMemory) {
          rightTuple.addBlocked(leftTuple);
          break;
        } else if (betaNode.isRightInputIsRiaNode()) {
          // If we aren't using leftMemory and the right input is a RIAN, then we must iterate and
          // find all subetwork right tuples and remove them
          // so we don't break
          rtm.remove(rightTuple);
        } else {
          break;
        }
      }
      rightTuple = nextRight;
    }
  }
Exemplo n.º 3
0
  public void doRightDeletes(
      NotNode notNode,
      LeftTupleSink sink,
      BetaMemory bm,
      InternalWorkingMemory wm,
      RightTupleSets srcRightTuples,
      LeftTupleSets trgLeftTuples) {
    LeftTupleMemory ltm = bm.getLeftTupleMemory();
    RightTupleMemory rtm = bm.getRightTupleMemory();
    ContextEntry[] contextEntry = bm.getContext();
    BetaConstraints constraints = notNode.getRawConstraints();

    for (RightTuple rightTuple = srcRightTuples.getDeleteFirst(); rightTuple != null; ) {
      RightTuple next = rightTuple.getStagedNext();

      FastIterator it = notNode.getRightIterator(rtm);

      // assign now, so we can remove from memory before doing any possible propagations
      boolean useComparisonIndex = rtm.getIndexType().isComparison();
      RightTuple rootBlocker = useComparisonIndex ? null : (RightTuple) it.next(rightTuple);

      if (rightTuple.getMemory() != null) {
        // it may have been staged and never actually added
        rtm.remove(rightTuple);
      }

      if (rightTuple.getBlocked() != null) {
        for (LeftTuple leftTuple = rightTuple.getBlocked(); leftTuple != null; ) {
          LeftTuple temp = leftTuple.getBlockedNext();

          leftTuple.clearBlocker();

          if (leftTuple.getStagedType() == LeftTuple.UPDATE) {
            // ignore, as it will get processed via left iteration. Children cannot be processed
            // twice
            leftTuple = temp;
            continue;
          }

          constraints.updateFromTuple(contextEntry, wm, leftTuple);

          if (useComparisonIndex) {
            rootBlocker = rtm.getFirst(leftTuple, null, it);
          }

          // we know that older tuples have been checked so continue next
          for (RightTuple newBlocker = rootBlocker;
              newBlocker != null;
              newBlocker = (RightTuple) it.next(newBlocker)) {
            if (constraints.isAllowedCachedLeft(contextEntry, newBlocker.getFactHandle())) {
              leftTuple.setBlocker(newBlocker);
              newBlocker.addBlocked(leftTuple);

              break;
            }
          }

          if (leftTuple.getBlocker() == null) {
            // was previous blocked and not in memory, so add
            ltm.add(leftTuple);

            trgLeftTuples.addInsert(
                sink.createLeftTuple(leftTuple, sink, rightTuple.getPropagationContext(), true));
          }

          leftTuple = temp;
        }
      }

      rightTuple.nullBlocked();
      rightTuple.clearStaged();
      rightTuple = next;
    }

    constraints.resetTuple(contextEntry);
  }
Exemplo n.º 4
0
  public static void dpUpdatesExistentialReorderRightMemory(
      BetaMemory bm, BetaNode betaNode, RightTupleSets srcRightTuples) {
    RightTupleMemory rtm = bm.getRightTupleMemory();

    boolean resumeFromCurrent =
        !(betaNode.isIndexedUnificationJoin() || rtm.getIndexType().isComparison());

    // remove all the staged rightTuples from the memory before to readd them all
    // this is to avoid split bucket when an updated rightTuple hasn't been moved yet
    // and so it is the first entry in the wrong bucket

    for (RightTuple rightTuple = srcRightTuples.getUpdateFirst(); rightTuple != null; ) {
      RightTuple next = rightTuple.getStagedNext();
      if (rightTuple.getMemory() != null) {
        rightTuple.setTempRightTupleMemory(rightTuple.getMemory());

        if (resumeFromCurrent) {
          if (rightTuple.getBlocked() != null) {
            // look for a non-staged right tuple first forward ...
            RightTuple tempRightTuple = (RightTuple) rightTuple.getNext();
            while (tempRightTuple != null && tempRightTuple.getStagedType() != LeftTuple.NONE) {
              // next cannot be an updated or deleted rightTuple
              tempRightTuple = (RightTuple) tempRightTuple.getNext();
            }

            // ... and if cannot find one try backward
            if (tempRightTuple == null) {
              tempRightTuple = (RightTuple) rightTuple.getPrevious();
              while (tempRightTuple != null && tempRightTuple.getStagedType() != LeftTuple.NONE) {
                // next cannot be an updated or deleted rightTuple
                tempRightTuple = (RightTuple) tempRightTuple.getPrevious();
              }
            }

            rightTuple.setTempNextRightTuple(tempRightTuple);
          }
        }

        rightTuple.setTempBlocked(rightTuple.getBlocked());
        rightTuple.nullBlocked();
        rtm.remove(rightTuple);
      }
      rightTuple = next;
    }

    for (RightTuple rightTuple = srcRightTuples.getUpdateFirst(); rightTuple != null; ) {
      RightTuple next = rightTuple.getStagedNext();
      if (rightTuple.getTempRightTupleMemory() != null) {

        rtm.add(rightTuple);

        if (resumeFromCurrent) {
          RightTuple tempRightTuple = rightTuple.getTempNextRightTuple();
          if (rightTuple.getBlocked() != null
              && tempRightTuple == null
              && rightTuple.getMemory() == rightTuple.getTempRightTupleMemory()) {
            // the next RightTuple was null, but current RightTuple was added back into the same
            // bucket, so reset as root blocker to re-match can be attempted
            rightTuple.setTempNextRightTuple(rightTuple);
          }
        }

        for (LeftTuple childLeftTuple = rightTuple.getFirstChild(); childLeftTuple != null; ) {
          LeftTuple childNext = childLeftTuple.getRightParentNext();
          childLeftTuple.reAddLeft();
          childLeftTuple = childNext;
        }
      }
      rightTuple = next;
    }
  }