LiteralConstraint - JBoss RULES 3.0.6 API 英文版文档

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org.drools.rule
Class LiteralConstraint

java.lang.Object
  org.drools.rule.LiteralConstraint

All Implemented Interfaces:: java.io.Serializable, Constraint, FieldConstraint, RuleComponent

public class LiteralConstraint
extends java.lang.Object
implements FieldConstraint
extends java.lang.Object
implements FieldConstraint

See Also:: Serialized Form

Constructor Summary

LiteralConstraint(FieldValue field, FieldExtractor extractor, Evaluator evaluator)


Method Summary

boolean equals(java.lang.Object object)


Evaluator getEvaluator()


FieldValue getField()


FieldExtractor getFieldExtractor()


Declaration[] getRequiredDeclarations()
          Literal constraints cannot have required declarations, so always return an empty array.

int hashCode()


boolean isAllowed(InternalFactHandle handle, Tuple tuple, WorkingMemory workingMemory)


java.lang.String toString()


Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Summary
`LiteralConstraint(FieldValue field, FieldExtractor extractor, Evaluator evaluator)`

Method Summary
`boolean`	`equals(java.lang.Object object)`
`Evaluator`	`getEvaluator()`
`FieldValue`	`getField()`
`FieldExtractor`	`getFieldExtractor()`
`Declaration[]`	`getRequiredDeclarations()` Literal constraints cannot have required declarations, so always return an empty array.
`int`	`hashCode()`
`boolean`	`isAllowed(InternalFactHandle handle, Tuple tuple, WorkingMemory workingMemory)`
`java.lang.String`	`toString()`

Methods inherited from class java.lang.Object
`clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

Constructor Detail

LiteralConstraint

public LiteralConstraint(FieldValue field,
                         FieldExtractor extractor,
                         Evaluator evaluator)

Method Detail

getEvaluator

public Evaluator getEvaluator()

getField

public FieldValue getField()

getFieldExtractor

public FieldExtractor getFieldExtractor()

getRequiredDeclarations

public Declaration[] getRequiredDeclarations()

Literal constraints cannot have required declarations, so always return an empty array.

Specified by:: getRequiredDeclarations in interface FieldConstraint

Returns:: Return an empty Declaration[]

isAllowed

public boolean isAllowed(InternalFactHandle handle,
                         Tuple tuple,
                         WorkingMemory workingMemory)

Specified by:: isAllowed in interface FieldConstraint

toString

public java.lang.String toString()

Overrides:: toString in class java.lang.Object

hashCode

public int hashCode()

Overrides:: hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object object)

Overrides:: equals in class java.lang.Object