org.optaplanner.core.impl.score.stream.drools.common

Class DroolsGenuineMetadata<A>

java.lang.Object

org.optaplanner.core.impl.score.stream.drools.common.DroolsGenuineMetadata<A>

All Implemented Interfaces:

DroolsMetadata<A,A>

public final class DroolsGenuineMetadata<A>
extends Object
implements DroolsMetadata<A,A>

Method Summary

Modifier and Type	Method and Description
org.drools.model.PatternDSL.PatternDef<A>	buildPattern() A pattern is a way of accessing the variable in Drools.
A	extract(A container) Extract variable value from the rule.
org.drools.model.Declaration<A>	getVariableDeclaration()
DroolsGenuineMetadata<A>	substitute(Supplier<org.drools.model.PatternDSL.PatternDef<A>> patternBuilder) Create new DroolsMetadata, where its pattern will be different.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.optaplanner.core.impl.score.stream.drools.common.DroolsMetadata

ofGenuine, ofInferred, ofInferred

Method Detail

extract

public A extract(A container)

Description copied from interface: DroolsMetadata

Extract variable value from the rule. For genuine variables, this will be equivalent to Function.identity(). For inferred variables, this will refer to the DroolsLogicalTuple.getItem(int).

Specified by:

extract in interface DroolsMetadata<A,A>

Parameters:

container - the variable from Drools on which to operate

Returns:

value of the variable

getVariableDeclaration

public org.drools.model.Declaration<A> getVariableDeclaration()

Specified by:

getVariableDeclaration in interface DroolsMetadata<A,A>

buildPattern

public org.drools.model.PatternDSL.PatternDef<A> buildPattern()

Description copied from interface: DroolsMetadata

A pattern is a way of accessing the variable in Drools. In some rules, patterns may be reused for several different constructs. Drools does not support reuse of pattern instances for different uses, and therefore we must create new ones every time we want to use them.

Specified by:

buildPattern in interface DroolsMetadata<A,A>

Returns:

pattern to give access to the variable

substitute

public DroolsGenuineMetadata<A> substitute(Supplier<org.drools.model.PatternDSL.PatternDef<A>> patternBuilder)

Description copied from interface: DroolsMetadata

Create new DroolsMetadata, where its pattern will be different.

Specified by:

substitute in interface DroolsMetadata<A,A>

Parameters:

patternBuilder - the new pattern to be returned by DroolsMetadata.buildPattern(). Typically reuses the parent pattern with some modifications.

Returns:

New instance of DroolsMetadata.