org.drools.core.rule

Class QueryArgument.Null

java.lang.Object

org.drools.core.rule.QueryArgument.Null

All Implemented Interfaces:

Externalizable, Serializable, QueryArgument

Enclosing interface:

QueryArgument

public static class QueryArgument.Null
extends Object
implements QueryArgument

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.drools.core.rule.QueryArgument

QueryArgument.Declr, QueryArgument.Literal, QueryArgument.Null, QueryArgument.Var

Field Summary

Fields inherited from interface org.drools.core.rule.QueryArgument

NULL, VAR

Constructor Summary

Constructors

Constructor and Description
Null()

Method Summary

Modifier and Type	Method and Description
Object	getValue(InternalWorkingMemory wm, LeftTuple leftTuple)
QueryArgument	normalize(ClassLoader classLoader)
void	readExternal(ObjectInput in)
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.core.rule.QueryArgument

evaluateDeclaration

Constructor Detail

Null

public Null()

Method Detail

getValue

public Object getValue(InternalWorkingMemory wm,
                       LeftTuple leftTuple)

Specified by:

getValue in interface QueryArgument

normalize

public QueryArgument normalize(ClassLoader classLoader)

Specified by:

normalize in interface QueryArgument

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Throws:

IOException

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Throws:

IOException

ClassNotFoundException