org.drools.core.spi
Class Accumulator.SafeAccumulator

java.lang.Object
  org.drools.core.spi.Accumulator.SafeAccumulator

All Implemented Interfaces:

Serializable, Accumulator, Invoker, RuleComponent

Enclosing interface:

Accumulator

public static class Accumulator.SafeAccumulator
extends Object
implements Accumulator, Serializable

This class is used as a wrapper delegate when a security policy is in place.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.drools.core.spi.Accumulator

Accumulator.SafeAccumulator

Constructor Summary

Accumulator.SafeAccumulator(Accumulator delegate)

Method Summary

void	accumulate(Object workingMemoryContext, Object context, Tuple leftTuple, InternalFactHandle handle, Declaration[] declarations, Declaration[] innerDeclarations, WorkingMemory workingMemory) Executes the accumulate (action) code for the given fact handle
Serializable	createContext() Creates the context object for an accumulator session.
Object	createWorkingMemoryContext() Creates and return a context object for each working memory instance
Object	getResult(Object workingMemoryContext, Object context, Tuple leftTuple, Declaration[] declarations, WorkingMemory workingMemory) Gets the result of the accummulation
void	init(Object workingMemoryContext, Object context, Tuple leftTuple, Declaration[] declarations, WorkingMemory workingMemory) Executes the initialization block of code
void	reverse(Object workingMemoryContext, Object context, Tuple leftTuple, InternalFactHandle handle, Declaration[] declarations, Declaration[] innerDeclarations, WorkingMemory workingMemory) Reverses the accumulate action for the given fact handle
boolean	supportsReverse() Returns true if this accumulator supports operation reversal

Methods inherited from class java.lang.Object

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

Constructor Detail

Accumulator.SafeAccumulator

public Accumulator.SafeAccumulator(Accumulator delegate)

Method Detail

createWorkingMemoryContext

public Object createWorkingMemoryContext()

Description copied from interface: Accumulator

Creates and return a context object for each working memory instance

Specified by:

createWorkingMemoryContext in interface Accumulator

Returns:

createContext

public Serializable createContext()

Description copied from interface: Accumulator

Creates the context object for an accumulator session. The context is passed as a parameter to every subsequent accumulator method call in the same session.

Specified by:

createContext in interface Accumulator

Returns:

init

public void init(Object workingMemoryContext,
                 Object context,
                 Tuple leftTuple,
                 Declaration[] declarations,
                 WorkingMemory workingMemory)
          throws Exception

Description copied from interface: Accumulator

Executes the initialization block of code

Specified by:

init in interface Accumulator

leftTuple - tuple causing the rule fire

declarations - previous declarations

Throws:

Exception

accumulate

public void accumulate(Object workingMemoryContext,
                       Object context,
                       Tuple leftTuple,
                       InternalFactHandle handle,
                       Declaration[] declarations,
                       Declaration[] innerDeclarations,
                       WorkingMemory workingMemory)
                throws Exception

Description copied from interface: Accumulator

Executes the accumulate (action) code for the given fact handle

Specified by:

accumulate in interface Accumulator

Throws:

Exception

supportsReverse

public boolean supportsReverse()

Description copied from interface: Accumulator

Returns true if this accumulator supports operation reversal

Specified by:

supportsReverse in interface Accumulator

Returns:

reverse

public void reverse(Object workingMemoryContext,
                    Object context,
                    Tuple leftTuple,
                    InternalFactHandle handle,
                    Declaration[] declarations,
                    Declaration[] innerDeclarations,
                    WorkingMemory workingMemory)
             throws Exception

Description copied from interface: Accumulator

Reverses the accumulate action for the given fact handle

Specified by:

reverse in interface Accumulator

Throws:

Exception

getResult

public Object getResult(Object workingMemoryContext,
                        Object context,
                        Tuple leftTuple,
                        Declaration[] declarations,
                        WorkingMemory workingMemory)
                 throws Exception

Description copied from interface: Accumulator

Gets the result of the accummulation

Specified by:

getResult in interface Accumulator

Returns:

Throws:

Exception