Package org.drools.core.rule

Class SingleAccumulate

java.lang.Object

org.drools.core.rule.ConditionalElement

org.drools.core.rule.Accumulate

org.drools.core.rule.SingleAccumulate

All Implemented Interfaces:

Externalizable, Serializable, Cloneable, PatternSource, RuleConditionElement, RuleComponent

public class SingleAccumulate
extends Accumulate

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	SingleAccumulate.Wirer

Field Summary

Fields inherited from class org.drools.core.rule.Accumulate

cloned, innerDeclarationCache, requiredDeclarations, source

Constructor Summary

Constructors

Constructor	Description
SingleAccumulate()
SingleAccumulate(RuleConditionElement source, Declaration[] requiredDeclarations)
SingleAccumulate(RuleConditionElement source, Declaration[] requiredDeclarations, Accumulator accumulator)

Method Summary

Modifier and Type	Method	Description
Object	accumulate(Object workingMemoryContext, Object context, Tuple match, InternalFactHandle handle, WorkingMemory workingMemory)	Executes the accumulate (action) code for the given fact handle
Object	accumulate(Object workingMemoryContext, Tuple match, InternalFactHandle childHandle, AccumulateNode.GroupByContext groupByContext, TupleList<AccumulateNode.AccumulateContextEntry> tupleList, WorkingMemory wm)
SingleAccumulate	clone()	Returns a clone from itself
Object	createFunctionContext()
Object	createWorkingMemoryContext()
boolean	equals(Object obj)
Accumulator[]	getAccumulators()
Object	getResult(Object workingMemoryContext, Object context, Tuple leftTuple, WorkingMemory workingMemory)	Gets the result of the accumulation
int	hashCode()
Object	init(Object workingMemoryContext, Object accContext, Object funcContext, Tuple leftTuple, WorkingMemory workingMemory)	Executes the initialization block of code
boolean	isMultiFunction()
void	readExternal(ObjectInput in)
void	replaceAccumulatorDeclaration(Declaration declaration, Declaration resolved)
boolean	supportsReverse()	Returns true if this accumulate supports reverse
boolean	tryReverse(Object workingMemoryContext, Object context, Tuple leftTuple, InternalFactHandle handle, RightTuple rightParent, LeftTuple match, WorkingMemory workingMemory)	Executes the reverse (action) code for the given fact handle
void	writeExternal(ObjectOutput out)

Methods inherited from class org.drools.core.rule.Accumulate

getInnerDeclarationCache, getInnerDeclarations, getNestedElements, getOuterDeclarations, getRequiredDeclarations, getSource, hasRequiredDeclarations, isGroupBy, isPatternScopeDelimiter, registerClone, replaceDeclaration, requiresLeftActivation, resolveDeclaration

Methods inherited from class java.lang.Object

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

Constructor Detail

SingleAccumulate

public SingleAccumulate()

SingleAccumulate

public SingleAccumulate(RuleConditionElement source,
                        Declaration[] requiredDeclarations)

SingleAccumulate

public SingleAccumulate(RuleConditionElement source,
                        Declaration[] requiredDeclarations,
                        Accumulator accumulator)

Method Detail

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Overrides:

readExternal in class Accumulate

Throws:

IOException

ClassNotFoundException

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Overrides:

writeExternal in class Accumulate

Throws:

IOException

isMultiFunction

public boolean isMultiFunction()

Specified by:

isMultiFunction in class Accumulate

getAccumulators

public Accumulator[] getAccumulators()

Specified by:

getAccumulators in class Accumulate

createFunctionContext

public Object createFunctionContext()

Specified by:

createFunctionContext in class Accumulate

init

public Object init(Object workingMemoryContext,
                   Object accContext,
                   Object funcContext,
                   Tuple leftTuple,
                   WorkingMemory workingMemory)

Description copied from class: Accumulate

Executes the initialization block of code

Specified by:

init in class Accumulate

accumulate

public Object accumulate(Object workingMemoryContext,
                         Object context,
                         Tuple match,
                         InternalFactHandle handle,
                         WorkingMemory workingMemory)

Description copied from class: Accumulate

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

Specified by:

accumulate in class Accumulate

accumulate

public Object accumulate(Object workingMemoryContext,
                         Tuple match,
                         InternalFactHandle childHandle,
                         AccumulateNode.GroupByContext groupByContext,
                         TupleList<AccumulateNode.AccumulateContextEntry> tupleList,
                         WorkingMemory wm)

Specified by:

accumulate in class Accumulate

tryReverse

public boolean tryReverse(Object workingMemoryContext,
                          Object context,
                          Tuple leftTuple,
                          InternalFactHandle handle,
                          RightTuple rightParent,
                          LeftTuple match,
                          WorkingMemory workingMemory)

Description copied from class: Accumulate

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

Specified by:

tryReverse in class Accumulate

supportsReverse

public boolean supportsReverse()

Description copied from class: Accumulate

Returns true if this accumulate supports reverse

Specified by:

supportsReverse in class Accumulate

getResult

public Object getResult(Object workingMemoryContext,
                        Object context,
                        Tuple leftTuple,
                        WorkingMemory workingMemory)

Description copied from class: Accumulate

Gets the result of the accumulation

Specified by:

getResult in class Accumulate

clone

public SingleAccumulate clone()

Description copied from interface: RuleConditionElement

Returns a clone from itself

Specified by:

clone in interface RuleConditionElement

Specified by:

clone in class Accumulate

Returns:

replaceAccumulatorDeclaration

public void replaceAccumulatorDeclaration(Declaration declaration,
                                          Declaration resolved)

Specified by:

replaceAccumulatorDeclaration in class Accumulate

createWorkingMemoryContext

public Object createWorkingMemoryContext()

Specified by:

createWorkingMemoryContext in class Accumulate

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object