org.eclipse.cosmos.rm.validation.internal.reference
Class DerefXPathFunction

java.lang.Object
  org.eclipse.cosmos.rm.validation.internal.reference.DerefXPathFunction

All Implemented Interfaces:

javax.xml.xpath.XPathFunction

public class DerefXPathFunction
extends java.lang.Object
implements javax.xml.xpath.XPathFunction

This is an implementaion of the dref function specified in the SML specification. This implementation makes the following assumptions:

• The function is invoked after parsing the documents to be validated (i.e. the data builders have constructed their associated data structure)
• The data structure of the data builder with the ID DocumentDOMBuilder.ID exists.

This is a singleton class that should be accessed via instance()

Field Summary

static int

ARITY Arity - The number of arguments for the dref function

Constructor Summary

DerefXPathFunction()

Method Summary

java.lang.Object	evaluate(java.util.List arguments)
java.lang.Object	evaluate(java.lang.String referenceExp) Evaluates expression to a node object
void	evaluateExpression(org.eclipse.cosmos.rm.validation.internal.reference.DerefXPathFunction.ArrayNodeList result, java.lang.String referenceExp)
static javax.xml.xpath.XPathFunction	instance() Returns an instance of this class

Methods inherited from class java.lang.Object

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

Field Detail

ARITY

public static final int ARITY

Arity - The number of arguments for the dref function

See Also:

Constant Field Values

Constructor Detail

DerefXPathFunction

public DerefXPathFunction()

Method Detail

evaluate

public java.lang.Object evaluate(java.util.List arguments)
                          throws javax.xml.xpath.XPathFunctionException

Specified by:

evaluate in interface javax.xml.xpath.XPathFunction

Throws:

javax.xml.xpath.XPathFunctionException

See Also:

XPathFunction.evaluate(java.util.List)

evaluateExpression

public void evaluateExpression(org.eclipse.cosmos.rm.validation.internal.reference.DerefXPathFunction.ArrayNodeList result,
                               java.lang.String referenceExp)
                        throws javax.xml.xpath.XPathFunctionException

Throws:

javax.xml.xpath.XPathFunctionException

evaluate

public java.lang.Object evaluate(java.lang.String referenceExp)
                          throws javax.xml.xpath.XPathFunctionException

Evaluates expression to a node object

Parameters:

referenceExp - uri expression

Returns:

return a node object

Throws:

javax.xml.xpath.XPathFunctionException - thrown if an error occurs during evaluation

instance

public static javax.xml.xpath.XPathFunction instance()

Returns an instance of this class

Returns:

The instance of this class