org.wso2.balana.cond

Class MultiplyFunction

java.lang.Object

org.wso2.balana.cond.FunctionBase

org.wso2.balana.cond.MultiplyFunction

All Implemented Interfaces:

Expression, Function

public class MultiplyFunction
extends FunctionBase

A class that implements all the *-multiply functions. It takes two operands of the appropriate type and returns the product of the operands. If either of the operands is indeterminate, an indeterminate result is returned.

Since:

1.0

Author:

Steve Hanna, Seth Proctor

Field Summary

Fields

Modifier and Type	Field and Description
static String	NAME_DOUBLE_MULTIPLY Standard identifier for the double-multiply function.
static String	NAME_INTEGER_MULTIPLY Standard identifier for the integer-multiply function.

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

FUNCTION_NS, FUNCTION_NS_2, FUNCTION_NS_3

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
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.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_INTEGER_MULTIPLY

public static final String NAME_INTEGER_MULTIPLY

Standard identifier for the integer-multiply function.

See Also:

Constant Field Values

NAME_DOUBLE_MULTIPLY

public static final String NAME_DOUBLE_MULTIPLY

Standard identifier for the double-multiply function.

See Also:

Constant Field Values

Constructor Detail

MultiplyFunction

public MultiplyFunction(String functionName)

Creates a new MultiplyFunction 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 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