org.wso2.balana.cond

Class StringFunction

java.lang.Object

org.wso2.balana.cond.FunctionBase

org.wso2.balana.cond.StringFunction

All Implemented Interfaces:

Expression, Function

public class StringFunction
extends FunctionBase

This class implements the string-concatenate function from XACML 2.0.

Since:

2.0

Author:

Seth Proctor

Field Summary

Fields

Modifier and Type	Field and Description
static String	NAME_STRING_CONCATENATE Standard identifier for the string-concatenate function.

Fields inherited from class org.wso2.balana.cond.FunctionBase

FUNCTION_NS, FUNCTION_NS_2, FUNCTION_NS_3

Constructor Summary

Constructors

Constructor and Description
StringFunction(String functionName) Creates a new StringFunction object.

Method Summary

Modifier and Type	Method and Description
EvaluationResult	evaluate(List<Evaluatable> 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.wso2.balana.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_STRING_CONCATENATE

public static final String NAME_STRING_CONCATENATE

Standard identifier for the string-concatenate function.

See Also:

Constant Field Values

Constructor Detail

StringFunction

public StringFunction(String functionName)

Creates a new StringFunction 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 unknown

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<Evaluatable> 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