Package org.drools.core.base.accumulators

Class JavaAccumulatorFunctionExecutor

java.lang.Object

org.drools.core.base.accumulators.JavaAccumulatorFunctionExecutor

All Implemented Interfaces:

Externalizable, Serializable, Accumulator, Invoker, Wireable, RuleComponent

public class JavaAccumulatorFunctionExecutor
extends Object
implements Accumulator, Externalizable, Wireable

A Java accumulator function executor implementation

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.drools.base.rule.accessor.Wireable

Wireable.Immutable

Constructor Summary

Constructors

Constructor	Description
JavaAccumulatorFunctionExecutor()
JavaAccumulatorFunctionExecutor(AccumulateFunction function)

Method Summary

Modifier and Type	Method	Description
Object	accumulate(Object workingMemoryContext, Object context, BaseTuple leftTuple, FactHandle handle, Declaration[] declarations, Declaration[] innerDeclarations, ValueResolver valueResolver)
Object	createContext()
Object	createWorkingMemoryContext()
boolean	equals(Object o)
ReturnValueExpression	getExpression()
Object	getResult(Object workingMemoryContext, Object context, BaseTuple leftTuple, Declaration[] declarations, ValueResolver valueResolver)
int	hashCode()
Object	init(Object workingMemoryContext, Object context, BaseTuple leftTuple, Declaration[] declarations, ValueResolver valueResolver)
void	readExternal(ObjectInput in)
void	setExpression(ReturnValueExpression expression)
boolean	supportsReverse()
boolean	tryReverse(Object workingMemoryContext, Object context, BaseTuple leftTuple, FactHandle handle, Object value, Declaration[] declarations, Declaration[] innerDeclarations, ValueResolver valueResolver)
void	wire(Object object)
void	writeExternal(ObjectOutput out)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.drools.base.rule.accessor.Accumulator

getRequiredDeclarations, replaceDeclaration

Methods inherited from interface org.drools.base.rule.accessor.Invoker

wrapsCompiledInvoker

Constructor Details

JavaAccumulatorFunctionExecutor

public JavaAccumulatorFunctionExecutor()

JavaAccumulatorFunctionExecutor

public JavaAccumulatorFunctionExecutor(AccumulateFunction function)

Method Details

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Throws:

IOException

ClassNotFoundException

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Throws:

IOException

createContext

public Object createContext()

Specified by:

createContext in interface Accumulator

init

public Object init(Object workingMemoryContext,
 Object context,
 BaseTuple leftTuple,
 Declaration[] declarations,
 ValueResolver valueResolver)

Specified by:

init in interface Accumulator

accumulate

public Object accumulate(Object workingMemoryContext,
 Object context,
 BaseTuple leftTuple,
 FactHandle handle,
 Declaration[] declarations,
 Declaration[] innerDeclarations,
 ValueResolver valueResolver)

Specified by:

accumulate in interface Accumulator

tryReverse

public boolean tryReverse(Object workingMemoryContext,
 Object context,
 BaseTuple leftTuple,
 FactHandle handle,
 Object value,
 Declaration[] declarations,
 Declaration[] innerDeclarations,
 ValueResolver valueResolver)

Specified by:

tryReverse in interface Accumulator

getResult

public Object getResult(Object workingMemoryContext,
 Object context,
 BaseTuple leftTuple,
 Declaration[] declarations,
 ValueResolver valueResolver)

Specified by:

getResult in interface Accumulator

supportsReverse

public boolean supportsReverse()

Specified by:

supportsReverse in interface Accumulator

getExpression

public ReturnValueExpression getExpression()

wire

public void wire(Object object)

Specified by:

wire in interface Wireable

setExpression

public void setExpression(ReturnValueExpression expression)

createWorkingMemoryContext

public Object createWorkingMemoryContext()

Specified by:

createWorkingMemoryContext in interface Accumulator

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object