org.drools.core.rule

Class LogicTransformer

java.lang.Object

org.drools.core.rule.LogicTransformer

public class LogicTransformer
extends Object

LogicTransformation is reponsible for removing redundant nodes and move Or nodes upwards. This class does not turn Exists into two Nots at this stage, that role is delegated to the Builder.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	LogicTransformer.NotOrTransformation (Not (OR (A B) ) Not | or / \ a b (And ( Not (a) Not (b)) ) And / \ Not Not | | a b

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	LogicTransformer()

Method Summary

Modifier and Type	Method and Description
protected void	fixClonedDeclarations(GroupElement and, Map<String,Class<?>> globals) During the logic transformation, we eventually clone CEs, specially patterns and corresponding declarations.
static LogicTransformer	getInstance()
protected boolean	processTree(GroupElement ce)
protected GroupElement[]	splitOr(GroupElement cloned)
static int[]	toIntArray(List<Integer> list)
GroupElement[]	transform(GroupElement cloned, Map<String,Class<?>> globals)

Methods inherited from class java.lang.Object

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

Constructor Detail

LogicTransformer

protected LogicTransformer()

Method Detail

getInstance

public static LogicTransformer getInstance()

transform

public GroupElement[] transform(GroupElement cloned,
                                Map<String,Class<?>> globals)
                         throws InvalidPatternException

Throws:

InvalidPatternException

splitOr

protected GroupElement[] splitOr(GroupElement cloned)

fixClonedDeclarations

protected void fixClonedDeclarations(GroupElement and,
                                     Map<String,Class<?>> globals)

During the logic transformation, we eventually clone CEs, specially patterns and corresponding declarations. So now we need to fix any references to cloned declarations.

toIntArray

public static int[] toIntArray(List<Integer> list)

processTree

protected boolean processTree(GroupElement ce)
                       throws InvalidPatternException

Throws:

InvalidPatternException