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Java Source Code / Java Documentation » Rule Engine » drolls Rule Engine » org.drools.base.accumulators

Source Cross Reference

Class Diagram

Java Document (Java Doc)

org.drools.base.accumulators .AccumulateFunction

All known Subclasses:   org.drools.base.accumulators .AverageAccumulateFunction,  org.drools.base.accumulators .MaxAccumulateFunction,  org.drools.base.accumulators .SumAccumulateFunction,  org.drools.base.accumulators .MinAccumulateFunction,  org.drools.base.accumulators .CountAccumulateFunction,
AccumulateFunction
public interface AccumulateFunction (Code)
An interface for accumulate external function implementations
author:
   etirelli

Method Summary
public void accumulate(Object context, Object value)

public Object createContext()

public Object getResult(Object context)

public void init(Object context)

public void reverse(Object context, Object value)

public boolean supportsReverse()
     True if the function supports reverse.

Method Detail
accumulate
public void accumulate(Object context, Object value)(Code)
Executes the accumulation action
Parameters:
  context -
Parameters:
  value -

createContext
public Object createContext()(Code)
Creates and returns a new context object

getResult
public Object getResult(Object context) throws Exception(Code)
Returns the current value in this accumulation session
Parameters:
  context -
throws:
  Exception -

init
public void init(Object context) throws Exception(Code)
Initializes the accumulator
Parameters:
  context -
throws:
  Exception -

reverse
public void reverse(Object context, Object value) throws Exception(Code)
Reverses the accumulation action
Parameters:
  context -
Parameters:
  value -
throws:
  Exception -

supportsReverse
public boolean supportsReverse()(Code)
True if the function supports reverse. False otherwise.

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