org.jboss.security.xacml.sunxacml.cond
Class NumericConvertFunction

java.lang.Object
  org.jboss.security.xacml.sunxacml.cond.FunctionBase
      org.jboss.security.xacml.sunxacml.cond.NumericConvertFunction

All Implemented Interfaces:

Expression, Function

public class NumericConvertFunction
extends FunctionBase

A class that implements all the numeric type conversion functions (double-to-integer and integer-to-double). It takes one argument of the appropriate type, converts that argument to the other type, and returns the result. If the argument is indeterminate, an indeterminate result is returned.

Since:

1.0

Author:

Steve Hanna, Seth Proctor

Field Summary

static String	NAME_DOUBLE_TO_INTEGER Standard identifier for the double-to-integer function.
static String	NAME_INTEGER_TO_DOUBLE Standard identifier for the integer-to-double function.

Fields inherited from class org.jboss.security.xacml.sunxacml.cond.FunctionBase

FUNCTION_NS, FUNCTION_NS_2

Constructor Summary

NumericConvertFunction(String functionName)
Creates a new NumericConvertFunction object.

Method Summary

EvaluationResult	evaluate(List inputs, EvaluationCtx context) Evaluate the function, using the specified parameters.
static Set	getSupportedIdentifiers() Returns a Set containing all the function identifiers supported by this class.

Methods inherited from class org.jboss.security.xacml.sunxacml.cond.FunctionBase

checkInputs, checkInputsNoBag, encode, encode, evalArgs, getFunctionId, getFunctionName, getIdentifier, getReturnType, getReturnTypeAsString, getType, makeProcessingError, returnsBag

Methods inherited from class java.lang.Object

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

Field Detail

NAME_DOUBLE_TO_INTEGER

public static final String NAME_DOUBLE_TO_INTEGER

Standard identifier for the double-to-integer function.

See Also:

Constant Field Values

NAME_INTEGER_TO_DOUBLE

public static final String NAME_INTEGER_TO_DOUBLE

Standard identifier for the integer-to-double function.

See Also:

Constant Field Values

Constructor Detail

NumericConvertFunction

public NumericConvertFunction(String functionName)

Creates a new NumericConvertFunction object.

Parameters:

functionName - the standard XACML name of the function to be handled by this object, including the full namespace

Throws:

IllegalArgumentException - if the function is unknwon

Method Detail

getSupportedIdentifiers

public static Set getSupportedIdentifiers()

Returns a Set containing all the function identifiers supported by this class.

Returns:

a Set of Strings

evaluate

public EvaluationResult evaluate(List inputs,
                                 EvaluationCtx context)

Evaluate the function, using the specified parameters.

Parameters:

inputs - a List of Evaluatable objects representing the arguments passed to the function

context - an EvaluationCtx so that the Evaluatable objects can be evaluated

Returns:

an EvaluationResult representing the function's result