com.sun.xacml
Class TargetMatch

java.lang.Object
  com.sun.xacml.TargetMatch

public class TargetMatch

extends Object

Represents the SubjectMatch, ResourceMatch, or ActionMatch XML types in XACML, depending on the value of the type field. This is the part of the Target that actually evaluates whether the specified attribute values in the Target match the corresponding attribute values in the request context.

Since:

1.0

Field Summary

static int	ACTION An integer value indicating that this class represents an ActionMatch
static int	RESOURCE An integer value indicating that this class represents a ResourceMatch
static int	SUBJECT An integer value indicating that this class represents a SubjectMatch

Constructor Summary

TargetMatch(int type, Function function, Evaluatable eval, AttributeValue attrValue)
Constructor that creates a TargetMatch from components.

Method Summary

void	encode(OutputStream output) Encodes this TargetMatch into its XML representation and writes this encoding to the given OutputStream with no indentation.
void	encode(OutputStream output, Indenter indenter) Encodes this TargetMatch into its XML representation and writes this encoding to the given OutputStream with indentation.
static TargetMatch	getInstance(Node root, String prefix, String xpathVersion) Creates a TargetMatch by parsing a node, using the input prefix to determine whether this is a SubjectMatch, ResourceMatch, or ActionMatch.
Evaluatable	getMatchEvaluatable() Returns the AttributeDesignator or AttributeSelector used by the matching function.
Function	getMatchFunction() Returns the Function used to do the matching.
AttributeValue	getMatchValue() Returns the AttributeValue used by the matching function.
int	getType() Returns the type of this TargetMatch, either SUBJECT, RESOURCE, or ACTION.
MatchResult	match(EvaluationCtx context) Determines whether this TargetMatch matches the input request (whether it is applicable)

Methods inherited from class java.lang.Object

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

Field Detail

SUBJECT

public static final int SUBJECT

An integer value indicating that this class represents a SubjectMatch

See Also:

Constant Field Values

RESOURCE

public static final int RESOURCE

An integer value indicating that this class represents a ResourceMatch

See Also:

Constant Field Values

ACTION

public static final int ACTION

An integer value indicating that this class represents an ActionMatch

See Also:

Constant Field Values

Constructor Detail

TargetMatch

public TargetMatch(int type,
                   Function function,
                   Evaluatable eval,
                   AttributeValue attrValue)
            throws IllegalArgumentException

Constructor that creates a TargetMatch from components.

Parameters:

type - an integer indicating whether this class represents a SubjectMatch, ResourceMatch, or ActionMatch

function - the Function that represents the MatchId

eval - the AttributeDesignator or AttributeSelector to be used to select attributes from the request context

attrValue - the AttributeValue to compare against

Throws:

IllegalArgumentException - if the input type isn't a valid value

Method Detail

getInstance

public static TargetMatch getInstance(Node root,
                                      String prefix,
                                      String xpathVersion)
                               throws ParsingException,
                                      IllegalArgumentException

Creates a TargetMatch by parsing a node, using the input prefix to determine whether this is a SubjectMatch, ResourceMatch, or ActionMatch.

Parameters:

root - the node to parse for the TargetMatch

prefix - a String indicating what type of TargetMatch to instantiate (Subject, Resource, or Action)

xpathVersion - the XPath version to use in any selectors, or null if this is unspecified (ie, not supplied in the defaults section of the policy)

Returns:

a new TargetMatch constructed by parsing

Throws:

ParsingException - if there was an error during parsing

IllegalArgumentException - if the input prefix isn't a valid value

getType

public int getType()

Returns the type of this TargetMatch, either SUBJECT, RESOURCE, or ACTION.

Returns:

the type

getMatchFunction

public Function getMatchFunction()

Returns the Function used to do the matching.

Returns:

the match function

getMatchValue

public AttributeValue getMatchValue()

Returns the AttributeValue used by the matching function.

Returns:

the AttributeValue for the match

getMatchEvaluatable

public Evaluatable getMatchEvaluatable()

Returns the AttributeDesignator or AttributeSelector used by the matching function.

Returns:

the designator or selector for the match

match

public MatchResult match(EvaluationCtx context)

Determines whether this TargetMatch matches the input request (whether it is applicable)

Parameters:

context - the representation of the request

Returns:

the result of trying to match the TargetMatch and the request

encode

public void encode(OutputStream output)

Encodes this TargetMatch into its XML representation and writes this encoding to the given OutputStream with no indentation.

Parameters:

output - a stream into which the XML-encoded data is written

encode

public void encode(OutputStream output,
                   Indenter indenter)

Encodes this TargetMatch into its XML representation and writes this encoding to the given OutputStream with indentation.

Parameters:

output - a stream into which the XML-encoded data is written

indenter - an object that creates indentation strings