Package 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

Constructors

Constructor	Description
SafeAccumulator(Accumulator delegate)

Method Summary

Modifier and Type	Method	Description
Object	accumulate(Object workingMemoryContext, Object context, Tuple leftTuple, InternalFactHandle handle, Declaration[] declarations, Declaration[] innerDeclarations, ReteEvaluator reteEvaluator)	Executes the accumulate (action) code for the given fact handle
Object	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, ReteEvaluator reteEvaluator)	Gets the result of the accummulation
Object	init(Object workingMemoryContext, Object context, Tuple leftTuple, Declaration[] declarations, ReteEvaluator reteEvaluator)	Executes the initialization block of code
boolean	supportsReverse()	Returns true if this accumulator supports operation reversal
boolean	tryReverse(Object workingMemoryContext, Object context, Tuple leftTuple, InternalFactHandle handle, Object value, Declaration[] declarations, Declaration[] innerDeclarations, ReteEvaluator reteEvaluator)	Reverses the accumulate action for the given fact handle
boolean	wrapsCompiledInvoker()

Methods inherited from class java.lang.Object

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

Constructor Detail

SafeAccumulator

public 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 Object 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 Object init(Object workingMemoryContext,
                   Object context,
                   Tuple leftTuple,
                   Declaration[] declarations,
                   ReteEvaluator reteEvaluator)

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

accumulate

public Object accumulate(Object workingMemoryContext,
                         Object context,
                         Tuple leftTuple,
                         InternalFactHandle handle,
                         Declaration[] declarations,
                         Declaration[] innerDeclarations,
                         ReteEvaluator reteEvaluator)

Description copied from interface: Accumulator

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

Specified by:

accumulate in interface Accumulator

supportsReverse

public boolean supportsReverse()

Description copied from interface: Accumulator

Returns true if this accumulator supports operation reversal

Specified by:

supportsReverse in interface Accumulator

Returns:

tryReverse

public boolean tryReverse(Object workingMemoryContext,
                          Object context,
                          Tuple leftTuple,
                          InternalFactHandle handle,
                          Object value,
                          Declaration[] declarations,
                          Declaration[] innerDeclarations,
                          ReteEvaluator reteEvaluator)

Description copied from interface: Accumulator

Reverses the accumulate action for the given fact handle

Specified by:

tryReverse in interface Accumulator

getResult

public Object getResult(Object workingMemoryContext,
                        Object context,
                        Tuple leftTuple,
                        Declaration[] declarations,
                        ReteEvaluator reteEvaluator)

Description copied from interface: Accumulator

Gets the result of the accummulation

Specified by:

getResult in interface Accumulator

Returns:

wrapsCompiledInvoker

public boolean wrapsCompiledInvoker()