Package org.drools.core.base.accumulators

Class CountAccumulateFunction

java.lang.Object

org.drools.core.base.accumulators.AbstractAccumulateFunction<CountAccumulateFunction.CountData>

org.drools.core.base.accumulators.CountAccumulateFunction

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, org.kie.api.runtime.rule.AccumulateFunction<CountAccumulateFunction.CountData>

public class CountAccumulateFunction
extends AbstractAccumulateFunction<CountAccumulateFunction.CountData>

An implementation of an accumulator capable of counting occurences

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	CountAccumulateFunction.CountData

Constructor Summary

Constructors

Constructor	Description
CountAccumulateFunction()

Method Summary

Modifier and Type	Method	Description
void	accumulate(CountAccumulateFunction.CountData data, java.lang.Object value)
CountAccumulateFunction.CountData	createContext()
java.lang.Object	getResult(CountAccumulateFunction.CountData data)
java.lang.Class<?>	getResultType()
void	init(CountAccumulateFunction.CountData data)
void	readExternal(java.io.ObjectInput in)
void	reverse(CountAccumulateFunction.CountData data, java.lang.Object value)
boolean	supportsReverse()
void	writeExternal(java.io.ObjectOutput out)

Methods inherited from class org.drools.core.base.accumulators.AbstractAccumulateFunction

equals, hashCode

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.kie.api.runtime.rule.AccumulateFunction

accumulateValue, initContext, tryReverse

Constructor Detail

CountAccumulateFunction

public CountAccumulateFunction()

Method Detail

readExternal

public void readExternal(java.io.ObjectInput in)
                  throws java.io.IOException,
                         java.lang.ClassNotFoundException

Throws:

java.io.IOException

java.lang.ClassNotFoundException

writeExternal

public void writeExternal(java.io.ObjectOutput out)
                   throws java.io.IOException

Throws:

java.io.IOException

createContext

public CountAccumulateFunction.CountData createContext()

init

public void init(CountAccumulateFunction.CountData data)

accumulate

public void accumulate(CountAccumulateFunction.CountData data,
                       java.lang.Object value)

reverse

public void reverse(CountAccumulateFunction.CountData data,
                    java.lang.Object value)

getResult

public java.lang.Object getResult(CountAccumulateFunction.CountData data)

supportsReverse

public boolean supportsReverse()

getResultType

public java.lang.Class<?> getResultType()