org.apache.xalan.extensions

Class ExtensionNamespacesManager


public class ExtensionNamespacesManager
extends java.lang.Object

Used during assembly of a stylesheet to collect the information for each extension namespace that is required during the transformation process to generate an ExtensionHandler.

Constructor Summary

ExtensionNamespacesManager()
An ExtensionNamespacesManager is instantiated the first time an extension function or element is found in the stylesheet.

Method Summary

ExtensionNamespaceSupport
defineJavaNamespace(String ns)
For any extension namespace that is not either predefined or defined by a "component" declaration or exslt function declaration, attempt to create an ExtensionNamespaceSuport object for the appropriate Java class or Java package Extension Handler.
ExtensionNamespaceSupport
defineJavaNamespace(String ns, String classOrPackage)
Vector
getExtensions()
Get the vector of extension namespaces.
int
namespaceIndex(String namespace, Vector extensions)
Get the index for a namespace entry in the extension namespace Vector, -1 if no such entry yet exists.
void
registerExtension(String namespace)
If necessary, register the extension namespace found compiling a function or creating an extension element.
void
registerExtension(ExtensionNamespaceSupport extNsSpt)
Register the extension namespace for an ElemExtensionDecl or ElemFunction, and prepare a support object to launch the appropriate ExtensionHandler at transformation runtime.
void
registerUnregisteredNamespaces()
Attempt to register any unregistered extension namespaces.

Constructor Details

ExtensionNamespacesManager

public ExtensionNamespacesManager()
An ExtensionNamespacesManager is instantiated the first time an extension function or element is found in the stylesheet. During initialization, a vector of ExtensionNamespaceSupport objects is created, one for each predefined extension namespace.

Method Details

defineJavaNamespace

public ExtensionNamespaceSupport defineJavaNamespace(String ns)
For any extension namespace that is not either predefined or defined by a "component" declaration or exslt function declaration, attempt to create an ExtensionNamespaceSuport object for the appropriate Java class or Java package Extension Handler. Called by StylesheetRoot.recompose(), after all ElemTemplate compose() operations have taken place, in order to set up handlers for the remaining extension namespaces.

Parameters:
ns - The extension namespace URI.

Returns:
An ExtensionNamespaceSupport object for this namespace (which defines the ExtensionHandler to be used), or null if such an object cannot be created.


defineJavaNamespace

public ExtensionNamespaceSupport defineJavaNamespace(String ns,
                                                     String classOrPackage)


getExtensions

public Vector getExtensions()
Get the vector of extension namespaces. Used to provide the extensions table access to a list of extension namespaces encountered during composition of a stylesheet.


namespaceIndex

public int namespaceIndex(String namespace,
                          Vector extensions)
Get the index for a namespace entry in the extension namespace Vector, -1 if no such entry yet exists.


registerExtension

public void registerExtension(String namespace)
If necessary, register the extension namespace found compiling a function or creating an extension element. If it is a predefined namespace, create a support object to simplify the instantiate of an appropriate ExtensionHandler during transformation runtime. Otherwise, add the namespace, if necessary, to a vector of undefined extension namespaces, to be defined later.


registerExtension

public void registerExtension(ExtensionNamespaceSupport extNsSpt)
Register the extension namespace for an ElemExtensionDecl or ElemFunction, and prepare a support object to launch the appropriate ExtensionHandler at transformation runtime.


registerUnregisteredNamespaces

public void registerUnregisteredNamespaces()
Attempt to register any unregistered extension namespaces.


Copyright B) 2004 Apache XML Project. All Rights Reserved.