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com.sun.xacml.cond
Class SubtractFunction  

java.lang.Object
  com.sun.xacml.cond.FunctionBase
      com.sun.xacml.cond.SubtractFunction

All Implemented Interfaces:

Function

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public class SubtractFunction

extends FunctionBase

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

Since:

1.0

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Field Summary
private static int	ID_DOUBLE_SUBTRACT
private static int	ID_INTEGER_SUBTRACT
static java.lang.String	NAME_DOUBLE_SUBTRACT           Standard identifier for the integer-subtract function.
static java.lang.String	NAME_INTEGER_SUBTRACT           Standard identifier for the integer-subtract function.

 

Fields inherited from class com.sun.xacml.cond.FunctionBase

FUNCTION_NS

 

Constructor Summary

SubtractFunction(java.lang.String functionName)           Creates a new SubtractFunction object.

 

Method Summary
EvaluationResult	evaluate(java.util.List inputs, com.sun.xacml.EvaluationCtx context)           Evaluate the function, using the specified parameters.
private static java.lang.String	getArgumentType(java.lang.String functionName)           Private helper that returns the type used for the given standard function.
private static int	getId(java.lang.String functionName)           Private helper that returns the internal identifier used for the given standard function.
static java.util.Set	getSupportedIdentifiers()           Returns a Set containing all the function identifiers supported by this class.

 

Methods inherited from class com.sun.xacml.cond.FunctionBase

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

 

Methods inherited from class java.lang.Object

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

 

Field Detail

NAME_INTEGER_SUBTRACT

public static final java.lang.String NAME_INTEGER_SUBTRACT

Standard identifier for the integer-subtract function.

See Also:

Constant Field Values

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NAME_DOUBLE_SUBTRACT

public static final java.lang.String NAME_DOUBLE_SUBTRACT

Standard identifier for the integer-subtract function.

See Also:

Constant Field Values

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ID_INTEGER_SUBTRACT

private static final int ID_INTEGER_SUBTRACT

See Also:

Constant Field Values

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ID_DOUBLE_SUBTRACT

private static final int ID_DOUBLE_SUBTRACT

See Also:

Constant Field Values

Constructor Detail

SubtractFunction

public SubtractFunction(java.lang.String functionName)

Creates a new SubtractFunction object.

Method Detail

getId

private static int getId(java.lang.String functionName)

Private helper that returns the internal identifier used for the given standard function.

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getArgumentType

private static java.lang.String getArgumentType(java.lang.String functionName)

Private helper that returns the type used for the given standard function. Note that this doesn't check on the return value since the method always is called after getId, so we assume that the function is present.

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getSupportedIdentifiers

public static java.util.Set getSupportedIdentifiers()

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

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evaluate

public EvaluationResult evaluate(java.util.List inputs,
                                 com.sun.xacml.EvaluationCtx context)

Evaluate the function, using the specified parameters.

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