Package org.drools.core.phreak

Class BuildtimeSegmentUtilities

java.lang.Object

org.drools.core.phreak.BuildtimeSegmentUtilities

public class BuildtimeSegmentUtilities
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field	Description
static int	JOIN_NODE_BIT
static int	NOT_NODE_BIT
static int	PASSIVE_EXISTS_NODE_BIT
static int	REACTIVE_EXISTS_NODE_BIT

Constructor Summary

Constructors

Constructor	Description
BuildtimeSegmentUtilities()

Method Summary

Modifier and Type	Method	Description
static boolean	canBeDisabled(BetaNode betaNode)
static SegmentMemory.SegmentPrototype[]	createPathProtoMemories(LeftTupleNode lts, LeftTupleSource stopNode, TerminalNode removingTn, RuleBase rbase)
static void	createPathProtoMemories(TerminalNode tn, TerminalNode removingTn, RuleBase rbase)
static SegmentMemory.SegmentPrototype	createSegmentMemory(LeftTupleNode segmentRoot, LeftTupleNode segmentTip, TerminalNode removingTn, RuleBase rbase)	Initialises the NodeSegment memory for all nodes in the segment.
static LeftTupleNode	findSegmentRoot(LeftTupleNode tupleSource)
static boolean	isAssociatedWith(NetworkNode node, TerminalNode tn)
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 boolean	requiresAnEagerSegment(int nodeTypesInSegment)
static boolean	sinkNotExclusivelyAssociatedWithTerminal(TerminalNode removingTN, LeftTupleNode sink)
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

Field Detail

NOT_NODE_BIT

public static final int NOT_NODE_BIT

See Also:

Constant Field Values

JOIN_NODE_BIT

public static final int JOIN_NODE_BIT

See Also:

Constant Field Values

REACTIVE_EXISTS_NODE_BIT

public static final int REACTIVE_EXISTS_NODE_BIT

See Also:

Constant Field Values

PASSIVE_EXISTS_NODE_BIT

public static final int PASSIVE_EXISTS_NODE_BIT

See Also:

Constant Field Values

Constructor Detail

BuildtimeSegmentUtilities

public BuildtimeSegmentUtilities()

Method Detail

createPathProtoMemories

public static void createPathProtoMemories(TerminalNode tn,
                                           TerminalNode removingTn,
                                           RuleBase rbase)

createPathProtoMemories

public static SegmentMemory.SegmentPrototype[] createPathProtoMemories(LeftTupleNode lts,
                                                                       LeftTupleSource stopNode,
                                                                       TerminalNode removingTn,
                                                                       RuleBase rbase)

createSegmentMemory

public static SegmentMemory.SegmentPrototype createSegmentMemory(LeftTupleNode segmentRoot,
                                                                 LeftTupleNode segmentTip,
                                                                 TerminalNode removingTn,
                                                                 RuleBase rbase)

Initialises the NodeSegment memory for all nodes in the segment.

requiresAnEagerSegment

public static boolean requiresAnEagerSegment(int nodeTypesInSegment)

nextNodePosMask

public static long nextNodePosMask(long nodePosMask)

canBeDisabled

public static boolean canBeDisabled(BetaNode betaNode)

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)

sinkNotExclusivelyAssociatedWithTerminal

public static boolean sinkNotExclusivelyAssociatedWithTerminal(TerminalNode removingTN,
                                                               LeftTupleNode sink)

updateNodeTypesMask

public static int updateNodeTypesMask(NetworkNode node,
                                      int mask)

isSet

public static boolean isSet(int mask,
                            int bit)

findSegmentRoot

public static LeftTupleNode findSegmentRoot(LeftTupleNode tupleSource)

isAssociatedWith

public static boolean isAssociatedWith(NetworkNode node,
                                       TerminalNode tn)