Package org.drools.core.phreak

Class SegmentUtilities

java.lang.Object

org.drools.core.phreak.SegmentUtilities

public class SegmentUtilities
extends Object

Constructor Summary

Constructors

Constructor	Description
SegmentUtilities()

Method Summary

Modifier and Type	Method	Description
static void	checkEagerSegmentCreation(LeftTupleSource lt, InternalWorkingMemory wm, int nodeTypesInSegment)
static SegmentMemory	createChildSegment(InternalWorkingMemory wm, LeftTupleNode node)
static SegmentMemory	createChildSegmentForTerminalNode(LeftTupleNode node, Memory memory)
static void	createChildSegments(InternalWorkingMemory wm, SegmentMemory smem, LeftTupleSinkPropagator sinkProp)
static SegmentMemory	getOrCreateSegmentMemory(LeftTupleSource tupleSource, InternalWorkingMemory wm)	Initialises the NodeSegment memory for all nodes in the segment.
static SegmentMemory	getQuerySegmentMemory(InternalWorkingMemory wm, LeftTupleSource segmentRoot, QueryElementNode queryNode)
static boolean	inSubNetwork(RightInputAdapterNode riaNode, LeftTupleSource leftTupleSource)	Is the LeftTupleSource a node in the sub network for the RightInputAdapterNode To be in the same network, it must be a node is after the two output of the parent and before the rianode.
static boolean	isNonTerminalTipNode(LeftTupleNode node, TerminalNode removingTN)
static boolean	isRootNode(LeftTupleNode node, TerminalNode removingTN)	Returns whether the node is the root of a segment.
static boolean	isSet(int mask, int bit)
static boolean	isTipNode(LeftTupleNode node, TerminalNode removingTN)	Returns whether the node is the tip of a segment.
static long	nextNodePosMask(long nodePosMask)
static int	updateNodeTypesMask(NetworkNode node, int mask)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SegmentUtilities

public SegmentUtilities()

Method Detail

getOrCreateSegmentMemory

public static SegmentMemory getOrCreateSegmentMemory(LeftTupleSource tupleSource,
                                                     InternalWorkingMemory wm)

Initialises the NodeSegment memory for all nodes in the segment.

nextNodePosMask

public static long nextNodePosMask(long nodePosMask)

getQuerySegmentMemory

public static SegmentMemory getQuerySegmentMemory(InternalWorkingMemory wm,
                                                  LeftTupleSource segmentRoot,
                                                  QueryElementNode queryNode)

createChildSegments

public static void createChildSegments(InternalWorkingMemory wm,
                                       SegmentMemory smem,
                                       LeftTupleSinkPropagator sinkProp)

createChildSegment

public static SegmentMemory createChildSegment(InternalWorkingMemory wm,
                                               LeftTupleNode node)

createChildSegmentForTerminalNode

public static SegmentMemory createChildSegmentForTerminalNode(LeftTupleNode node,
                                                              Memory memory)

inSubNetwork

public static boolean inSubNetwork(RightInputAdapterNode riaNode,
                                   LeftTupleSource leftTupleSource)

Is the LeftTupleSource a node in the sub network for the RightInputAdapterNode To be in the same network, it must be a node is after the two output of the parent and before the rianode.

checkEagerSegmentCreation

public static void checkEagerSegmentCreation(LeftTupleSource lt,
                                             InternalWorkingMemory wm,
                                             int nodeTypesInSegment)

isRootNode

public static boolean isRootNode(LeftTupleNode node,
                                 TerminalNode removingTN)

Returns whether the node is the root of a segment. Lians are always the root of a segment. node cannot be null. The result should discount any removingRule. That means it gives you the result as if the rule had already been removed from the network.

isTipNode

public static boolean isTipNode(LeftTupleNode node,
                                TerminalNode removingTN)

Returns whether the node is the tip of a segment. EndNodes (rtn and rian) are always the tip of a segment. node cannot be null. The result should discount any removingRule. That means it gives you the result as if the rule had already been removed from the network.

isNonTerminalTipNode

public static boolean isNonTerminalTipNode(LeftTupleNode node,
                                           TerminalNode removingTN)

updateNodeTypesMask

public static int updateNodeTypesMask(NetworkNode node,
                                      int mask)

isSet

public static boolean isSet(int mask,
                            int bit)