org.drools.core.reteoo.builder

Class BuildUtils

java.lang.Object

org.drools.core.reteoo.builder.BuildUtils

public class BuildUtils
extends Object

Utility functions for reteoo build

Constructor Summary

Constructors

Constructor and Description
BuildUtils()

Method Summary

Modifier and Type	Method and Description
void	addBuilder(Class<?> target, ReteooComponentBuilder builder) Adds the given builder for the given target to the builders map
<T extends BaseNode> T	attachNode(BuildContext context, T candidate) Attaches a node into the network.
TemporalDependencyMatrix	calculateTemporalDistance(GroupElement groupElement) Calculates the temporal distance between all event patterns in the given subrule.
void	checkUnboundDeclarations(BuildContext context, Declaration[] declarations) Make sure the required declarations are previously bound
BetaConstraints	createBetaNodeConstraint(BuildContext context, List<BetaNodeFieldConstraint> list, boolean disableIndexing) Creates and returns a BetaConstraints object for the given list of constraints
ReteooComponentBuilder	getBuilderFor(Class cls)
ReteooComponentBuilder	getBuilderFor(RuleConditionElement target) Returns a builder for the given target from the builders map

Methods inherited from class java.lang.Object

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

Constructor Detail

BuildUtils

public BuildUtils()

Method Detail

addBuilder

public void addBuilder(Class<?> target,
                       ReteooComponentBuilder builder)

Adds the given builder for the given target to the builders map

getBuilderFor

public ReteooComponentBuilder getBuilderFor(RuleConditionElement target)

Returns a builder for the given target from the builders map

getBuilderFor

public ReteooComponentBuilder getBuilderFor(Class cls)

attachNode

public <T extends BaseNode> T attachNode(BuildContext context,
                                         T candidate)

Attaches a node into the network. If a node already exists that could substitute, it is used instead.

Parameters:

context - The current build context

candidate - The node to attach.

Returns:

the actual attached node that may be the one given as parameter or eventually one that was already in the cache if sharing is enabled

createBetaNodeConstraint

public BetaConstraints createBetaNodeConstraint(BuildContext context,
                                                List<BetaNodeFieldConstraint> list,
                                                boolean disableIndexing)

Creates and returns a BetaConstraints object for the given list of constraints

Parameters:

context - the current build context

list - the list of constraints

checkUnboundDeclarations

public void checkUnboundDeclarations(BuildContext context,
                                     Declaration[] declarations)
                              throws InvalidPatternException

Make sure the required declarations are previously bound

Parameters:

declarations -

Throws:

InvalidPatternException

calculateTemporalDistance

public TemporalDependencyMatrix calculateTemporalDistance(GroupElement groupElement)

Calculates the temporal distance between all event patterns in the given subrule.

Parameters:

groupElement - the root element of a subrule being added to the rulebase