org.axiondb.functions
Class BaseBooleanBranchFunction

java.lang.Object
  extended byorg.axiondb.BaseSelectable
      extended byorg.axiondb.functions.BaseFunction
          extended byorg.axiondb.functions.BaseBooleanBranchFunction
All Implemented Interfaces:
ConcreteFunction, Function, ScalarFunction, Selectable, Serializable
Direct Known Subclasses:
AndFunction, OrFunction

public abstract class BaseBooleanBranchFunction
extends BaseFunction
implements ScalarFunction

Version:
$Revision: 1.2 $ $Date: 2003/08/25 23:41:10 $
See Also:
Serialized Form

Constructor Summary
BaseBooleanBranchFunction(String name)
           
 
Method Summary
 Object evaluate(RowDecorator row)
           
protected abstract  boolean exitOnValue()
           
 DataType getDataType()
           
 boolean isValid()
           
 
Methods inherited from class org.axiondb.functions.BaseFunction
addArgument, getAlias, getArgument, getArgumentCount, getLabel, getName, setAlias, setArgument, setName, setVariableContext, toString
 
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

BaseBooleanBranchFunction

public BaseBooleanBranchFunction(String name)
Method Detail

getDataType

public final DataType getDataType()
Specified by:
getDataType in interface Selectable
Specified by:
getDataType in class BaseFunction

evaluate

public final Object evaluate(RowDecorator row)
                      throws AxionException
Specified by:
evaluate in interface ScalarFunction
Throws:
AxionException

isValid

public final boolean isValid()
Specified by:
isValid in interface ConcreteFunction
Specified by:
isValid in class BaseFunction

exitOnValue

protected abstract boolean exitOnValue()