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BaseEvaluator - JBoss RULES 3.0.6 API 英文版文档

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org.drools.base
Class BaseEvaluator

java.lang.Object
  org.drools.base.BaseEvaluator

All Implemented Interfaces:

java.io.Serializable, Evaluator

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public abstract class BaseEvaluator
extends java.lang.Object
implements Evaluator

BaseEvaluator is an Object Comparator that is operator aware

See Also:

Serialized Form

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Field Summary

 

Fields inherited from interface org.drools.spi.Evaluator
ARRAY_TYPE, BOOLEAN_TYPE, BYTE_TYPE, CHAR_TYPE, CONTAINS, DATE_TYPE, DOUBLE_TYPE, EQUAL, EXCLUDES, FLOAT_TYPE, GREATER, GREATER_OR_EQUAL, INTEGER_TYPE, LESS, LESS_OR_EQUAL, LONG_TYPE, MATCHES, NOT_EQUAL, NULL_TYPE, OBJECT_TYPE, SHORT_TYPE, STRING_TYPE

 

Constructor Summary
BaseEvaluator(int type, int operator)

 

Method Summary
boolean	equals(java.lang.Object other)
abstract  boolean	evaluate(java.lang.Object object1, java.lang.Object object2)           This method will apply the evaluator on the objects.
int	getOperator()
int	getType()
int	hashCode()

 

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

 

Constructor Detail

BaseEvaluator

public BaseEvaluator(int type,
                     int operator)

Method Detail

getOperator

public int getOperator()

Specified by:

getOperator in interface Evaluator

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getType

public int getType()

Specified by:

getType in interface Evaluator

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evaluate

public abstract boolean evaluate(java.lang.Object object1,
                                 java.lang.Object object2)

Description copied from interface: Evaluator

This method will apply the evaluator on the objects. Typically, they follow this form: Fact(object1 operator object2) Where operator selects the appropraite concrete evaluator, and object1, and object2 are parameters to this method. So Person(age < 42) will have object1==age field (of the Person fact object) and "42" will be the object2 value.

Specified by:

evaluate in interface Evaluator

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equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class java.lang.Object

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hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

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