org.wso2.balana.cond.xacml3

Class StringComparingFunction

java.lang.Object

org.wso2.balana.cond.FunctionBase

org.wso2.balana.cond.xacml3.StringComparingFunction

All Implemented Interfaces:

Expression, Function

public class StringComparingFunction
extends FunctionBase

A class that implements all the *-start-with functions. It takes two arguments of given data-type and returns a BooleanAttribute data type. The result shall be true if the second string begins with the first string, and false otherwise.

Field Summary

Fields

Modifier and Type	Field and Description
static String	NAME_ANY_URI_CONTAIN Standard identifier for the anyURI-starts-with function.
static String	NAME_ANY_URI_ENDS_WITH Standard identifier for the anyURI-starts-with function.
static String	NAME_ANY_URI_START_WITH Standard identifier for the anyURI-starts-with function.
static String	NAME_STRING_CONTAIN Standard identifier for the string-starts-with function.
static String	NAME_STRING_ENDS_WITH Standard identifier for the string-starts-with function.
static String	NAME_STRING_START_WITH Standard identifier for the string-starts-with function.

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

FUNCTION_NS, FUNCTION_NS_2, FUNCTION_NS_3

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
EvaluationResult	evaluate(List<Evaluatable> inputs, EvaluationCtx context) Evaluates the Function using the given inputs.
static Set<String>	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_START_WITH

public static final String NAME_STRING_START_WITH

Standard identifier for the string-starts-with function.

See Also:

Constant Field Values

NAME_ANY_URI_START_WITH

public static final String NAME_ANY_URI_START_WITH

Standard identifier for the anyURI-starts-with function.

See Also:

Constant Field Values

NAME_STRING_ENDS_WITH

public static final String NAME_STRING_ENDS_WITH

Standard identifier for the string-starts-with function.

See Also:

Constant Field Values

NAME_ANY_URI_ENDS_WITH

public static final String NAME_ANY_URI_ENDS_WITH

Standard identifier for the anyURI-starts-with function.

See Also:

Constant Field Values

NAME_STRING_CONTAIN

public static final String NAME_STRING_CONTAIN

Standard identifier for the string-starts-with function.

See Also:

Constant Field Values

NAME_ANY_URI_CONTAIN

public static final String NAME_ANY_URI_CONTAIN

Standard identifier for the anyURI-starts-with function.

See Also:

Constant Field Values

Constructor Detail

StringComparingFunction

public StringComparingFunction(String functionName)

Creates a new AddFunction 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<String> 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)

Description copied from interface: Function

Evaluates the Function using the given inputs. The List contains Evaluatables which are all of the correct type if the Function has been created as part of an Apply or TargetMatch, but which may otherwise be invalid. Each parameter should be evaluated by the Function, unless the Function doesn't need to evaluate all inputs to determine a result (as in the case of the or function). The order of the List is significant, so a Function should have a very good reason if it wants to evaluate the inputs in a different order.

Note that if this is a higher-order function, like any-of, then some argument (typically the first) in the List will actually be a Function object representing the function to apply to some bag. A function needs to know if it's a higher-order function, and therefore whether or not to look for this case. Also, a higher-order function is responsible for checking that the inputs that it will pass to the Function provided as the first parameter are valid, ie. it must do a checkInputs on its sub-function when checkInputs is called on the higher-order function.

Parameters:

inputs - the List of inputs for the function

context - the representation of the request

Returns:

a result containing the AttributeValue computed when evaluating the function, or Status specifying some error condition