org.axiondb.functions
Class MatchesFunction

java.lang.Object
  extended byorg.axiondb.BaseSelectable
      extended byorg.axiondb.functions.BaseFunction
          extended byorg.axiondb.functions.MatchesFunction
All Implemented Interfaces:
ConcreteFunction, Function, FunctionFactory, ScalarFunction, Selectable, Serializable

public class MatchesFunction
extends BaseFunction
implements ScalarFunction, FunctionFactory

MATCHES(string, string): returns a boolean that indicates whether first string matches the regular expression represented by the second string

Version:
$Revision: 1.5 $ $Date: 2004/08/21 02:59:45 $
See Also:
Serialized Form

Field Summary
protected static DataType ARG_TYPE
           
protected static DataType RETURN_TYPE
           
 
Constructor Summary
MatchesFunction()
           
 
Method Summary
 Object evaluate(RowDecorator row)
           
 DataType getDataType()
           
 boolean isValid()
           
 ConcreteFunction makeNewInstance()
           
 
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
 

Field Detail

ARG_TYPE

protected static final DataType ARG_TYPE

RETURN_TYPE

protected static final DataType RETURN_TYPE
Constructor Detail

MatchesFunction

public MatchesFunction()
Method Detail

makeNewInstance

public ConcreteFunction makeNewInstance()
Specified by:
makeNewInstance in interface FunctionFactory

getDataType

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

evaluate

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

isValid

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