Package org.drools.mvel.expr

Class MVELAccumulator

java.lang.Object

org.drools.mvel.expr.MVELAccumulator

All Implemented Interfaces:

Externalizable, Serializable, org.drools.base.rule.accessor.Accumulator, org.drools.base.rule.accessor.Invoker, org.drools.base.rule.RuleComponent, MVELCompileable

public class MVELAccumulator
extends Object
implements MVELCompileable, org.drools.base.rule.accessor.Accumulator, Externalizable

An MVEL accumulator implementation

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
MVELAccumulator()
MVELAccumulator(MVELCompilationUnit initUnit, MVELCompilationUnit actionUnit, MVELCompilationUnit reverseUnit, MVELCompilationUnit resultUnit)

Method Summary

Modifier and Type	Method	Description
Object	accumulate(Object workingMemoryContext, Object context, org.drools.base.reteoo.BaseTuple tuple, FactHandle handle, org.drools.base.rule.Declaration[] declarations, org.drools.base.rule.Declaration[] innerDeclarations, org.drools.base.base.ValueResolver valueResolver)
void	compile(MVELDialectRuntimeData runtimeData)
void	compile(MVELDialectRuntimeData runtimeData, org.drools.base.definitions.rule.impl.RuleImpl rule)
Object	createContext()
Object	createWorkingMemoryContext()
org.drools.base.rule.Declaration[]	getRequiredDeclarations()
Object	getResult(Object workingMemoryContext, Object context, org.drools.base.reteoo.BaseTuple tuple, org.drools.base.rule.Declaration[] declarations, org.drools.base.base.ValueResolver valueResolver)
Object	init(Object workingMemoryContext, Object context, org.drools.base.reteoo.BaseTuple tuple, org.drools.base.rule.Declaration[] declarations, org.drools.base.base.ValueResolver valueResolver)
void	readExternal(ObjectInput in)
boolean	supportsReverse()
boolean	tryReverse(Object workingMemoryContext, Object context, org.drools.base.reteoo.BaseTuple leftTuple, FactHandle handle, Object value, org.drools.base.rule.Declaration[] declarations, org.drools.base.rule.Declaration[] innerDeclarations, org.drools.base.base.ValueResolver valueResolver)
void	writeExternal(ObjectOutput out)

Methods inherited from class java.lang.Object

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

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

replaceDeclaration

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

wrapsCompiledInvoker

Constructor Details

MVELAccumulator

public MVELAccumulator()

MVELAccumulator

public MVELAccumulator(MVELCompilationUnit initUnit,
 MVELCompilationUnit actionUnit,
 MVELCompilationUnit reverseUnit,
 MVELCompilationUnit resultUnit)

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

compile

public void compile(MVELDialectRuntimeData runtimeData)

Specified by:

compile in interface MVELCompileable

compile

public void compile(MVELDialectRuntimeData runtimeData,
 org.drools.base.definitions.rule.impl.RuleImpl rule)

Specified by:

compile in interface MVELCompileable

createContext

public Object createContext()

Specified by:

createContext in interface org.drools.base.rule.accessor.Accumulator

init

public Object init(Object workingMemoryContext,
 Object context,
 org.drools.base.reteoo.BaseTuple tuple,
 org.drools.base.rule.Declaration[] declarations,
 org.drools.base.base.ValueResolver valueResolver)

Specified by:

init in interface org.drools.base.rule.accessor.Accumulator

accumulate

public Object accumulate(Object workingMemoryContext,
 Object context,
 org.drools.base.reteoo.BaseTuple tuple,
 FactHandle handle,
 org.drools.base.rule.Declaration[] declarations,
 org.drools.base.rule.Declaration[] innerDeclarations,
 org.drools.base.base.ValueResolver valueResolver)

Specified by:

accumulate in interface org.drools.base.rule.accessor.Accumulator

tryReverse

public boolean tryReverse(Object workingMemoryContext,
 Object context,
 org.drools.base.reteoo.BaseTuple leftTuple,
 FactHandle handle,
 Object value,
 org.drools.base.rule.Declaration[] declarations,
 org.drools.base.rule.Declaration[] innerDeclarations,
 org.drools.base.base.ValueResolver valueResolver)

Specified by:

tryReverse in interface org.drools.base.rule.accessor.Accumulator

getResult

public Object getResult(Object workingMemoryContext,
 Object context,
 org.drools.base.reteoo.BaseTuple tuple,
 org.drools.base.rule.Declaration[] declarations,
 org.drools.base.base.ValueResolver valueResolver)

Specified by:

getResult in interface org.drools.base.rule.accessor.Accumulator

supportsReverse

public boolean supportsReverse()

Specified by:

supportsReverse in interface org.drools.base.rule.accessor.Accumulator

createWorkingMemoryContext

public Object createWorkingMemoryContext()

Specified by:

createWorkingMemoryContext in interface org.drools.base.rule.accessor.Accumulator

getRequiredDeclarations

public org.drools.base.rule.Declaration[] getRequiredDeclarations()

Specified by:

getRequiredDeclarations in interface org.drools.base.rule.accessor.Accumulator