org.jaxen
Class ContextSupport

java.lang.Object
  extended by org.jaxen.ContextSupport
All Implemented Interfaces:
Serializable

public class ContextSupport
extends Object
implements Serializable

Supporting context information for resolving namespace prefixes, functions, and variables.

NOTE: This class is not typically used directly, but is exposed for writers of implementation-specific XPath packages.

Version:
$Id: ContextSupport.java 1157 2006-06-03 20:07:37Z elharo $
Author:
bob mcwhirter
See Also:
XPath for dom4j, XPath for JDOM, XPath for W3C DOM, Serialized Form

Constructor Summary
ContextSupport()
          Construct an empty ContextSupport.
ContextSupport(NamespaceContext namespaceContext, FunctionContext functionContext, VariableContext variableContext, Navigator navigator)
          Create a new ContextSupport object.
 
Method Summary
 Function getFunction(String namespaceURI, String prefix, String localName)
          Retrieve a Function.
 FunctionContext getFunctionContext()
          Retrieve the FunctionContext.
 NamespaceContext getNamespaceContext()
          Retrieve the NamespaceContext.
 Navigator getNavigator()
          Retrieve the Navigator.
 VariableContext getVariableContext()
          Retrieve the VariableContext.
 Object getVariableValue(String namespaceURI, String prefix, String localName)
          Retrieve a variable value.
 void setFunctionContext(FunctionContext functionContext)
          Set the FunctionContext.
 void setNamespaceContext(NamespaceContext namespaceContext)
          Set the NamespaceContext.
 void setVariableContext(VariableContext variableContext)
          Set the VariableContext.
 String translateNamespacePrefixToUri(String prefix)
          Translate a namespace prefix to its URI.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ContextSupport

public ContextSupport()
Construct an empty ContextSupport.


ContextSupport

public ContextSupport(NamespaceContext namespaceContext,
                      FunctionContext functionContext,
                      VariableContext variableContext,
                      Navigator navigator)
Create a new ContextSupport object.

Parameters:
namespaceContext - the NamespaceContext
functionContext - the FunctionContext
variableContext - the VariableContext
navigator - the model navigator
Method Detail

setNamespaceContext

public void setNamespaceContext(NamespaceContext namespaceContext)
Set the NamespaceContext.

Parameters:
namespaceContext - the namespace context

getNamespaceContext

public NamespaceContext getNamespaceContext()
Retrieve the NamespaceContext.

Returns:
the namespace context

setFunctionContext

public void setFunctionContext(FunctionContext functionContext)
Set the FunctionContext.

Parameters:
functionContext - the function context

getFunctionContext

public FunctionContext getFunctionContext()
Retrieve the FunctionContext.

Returns:
the function context

setVariableContext

public void setVariableContext(VariableContext variableContext)
Set the VariableContext.

Parameters:
variableContext - the variable context

getVariableContext

public VariableContext getVariableContext()
Retrieve the VariableContext.

Returns:
the variable context

getNavigator

public Navigator getNavigator()
Retrieve the Navigator.

Returns:
the navigator

translateNamespacePrefixToUri

public String translateNamespacePrefixToUri(String prefix)
Translate a namespace prefix to its URI.

Parameters:
prefix - The prefix
Returns:
the namespace URI mapped to the prefix

getVariableValue

public Object getVariableValue(String namespaceURI,
                               String prefix,
                               String localName)
                        throws UnresolvableException
Retrieve a variable value.

Parameters:
namespaceURI - the function namespace URI
prefix - the function prefix
localName - the function name
Returns:
the variable value.
Throws:
UnresolvableException - if unable to locate a bound variable.

getFunction

public Function getFunction(String namespaceURI,
                            String prefix,
                            String localName)
                     throws UnresolvableException
Retrieve a Function.

Parameters:
namespaceURI - the function namespace URI
prefix - the function prefix
localName - the function name
Returns:
the function object
Throws:
UnresolvableException - if unable to locate a bound function


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