org.axiondb.functions
Class FunctionIdentifier

java.lang.Object
  org.axiondb.BaseSelectable
      org.axiondb.functions.BaseFunction
          org.axiondb.functions.FunctionIdentifier

All Implemented Interfaces:

java.io.Serializable, Function, ConcreteFunction, Selectable

public class FunctionIdentifier
extends BaseFunction
implements Function

A Selectable representing an unresolved Function.

Version:

$Revision: 1.14 $ $Date: 2005/05/02 22:28:41 $

See Also:

Serialized Form

Field Summary

Fields inherited from class org.axiondb.BaseSelectable

_hash

Constructor Summary

FunctionIdentifier(java.lang.String name)

FunctionIdentifier(java.lang.String name, java.util.List args)

Method Summary

java.lang.Object	evaluate(RowDecorator row)
DataType	getDataType()
boolean	isValid()

Methods inherited from class org.axiondb.functions.BaseFunction

addArgument, getArgument, getArgumentCount, setArgument, setVariableContext, toString

Methods inherited from class org.axiondb.BaseSelectable

getAlias, getLabel, getName, setAlias, setName

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.axiondb.Function

addArgument, getAlias, getArgument, getArgumentCount, getName, setAlias, setArgument

Methods inherited from interface org.axiondb.Selectable

getLabel, setVariableContext

Constructor Detail

FunctionIdentifier

public FunctionIdentifier(java.lang.String name)

FunctionIdentifier

public FunctionIdentifier(java.lang.String name,
                          java.util.List args)

Method Detail

evaluate

public java.lang.Object evaluate(RowDecorator row)

Specified by:

evaluate in interface Selectable

getDataType

public DataType getDataType()

Specified by:

getDataType in interface Selectable

Specified by:

getDataType in class BaseFunction

isValid

public boolean isValid()

Specified by:

isValid in interface ConcreteFunction

Specified by:

isValid in class BaseFunction