com.interface21.web.servlet.view
Class XmlViewResolver

java.lang.Object
  |
  +--com.interface21.context.support.ApplicationObjectSupport
        |
        +--com.interface21.web.servlet.view.AbstractCachingViewResolver
              |
              +--com.interface21.web.servlet.view.XmlViewResolver

All Implemented Interfaces:

ApplicationContextAware, ViewResolver

public class XmlViewResolver

extends AbstractCachingViewResolver

Implementation of ViewResolver that uses bean definitions in an XML file, specified by location (URL or relative path, according to the ApplicationContext implementation). The file will typically be located in the WEB-INF directory.

This ViewResolver does not support internationalization. Consider ResourceBundleViewResolver if you need to apply different view resources per locale.

Extends AbstractCachingViewResolver for decent performance.

Since:

18.06.2003

Author:

Juergen Hoeller

See Also:

ApplicationContext.getResourceAsStream(java.lang.String), ResourceBundleViewResolver

Field Summary

static java.lang.String

DEFAULT_LOCATION Default if no other location is supplied

Fields inherited from class com.interface21.context.support.ApplicationObjectSupport

logger

Constructor Summary

XmlViewResolver()

Method Summary

protected void	initApplicationContext() Pre-initialize the factory from the XML file.
protected BeanFactory	initFactory() Initialize the BeanFactory from the XML file.
protected View	loadView(java.lang.String viewName, java.util.Locale locale) Subclasses must implement this method.
void	setLocation(java.lang.String location) Set the location of the XML file that defines the view beans.

Methods inherited from class com.interface21.web.servlet.view.AbstractCachingViewResolver

isCache, resolveViewName, setCache

Methods inherited from class com.interface21.context.support.ApplicationObjectSupport

getApplicationContext, setApplicationContext

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.interface21.context.ApplicationContextAware

setApplicationContext

Field Detail

DEFAULT_LOCATION

public static final java.lang.String DEFAULT_LOCATION

Default if no other location is supplied

Constructor Detail

XmlViewResolver

public XmlViewResolver()

Method Detail

setLocation

public void setLocation(java.lang.String location)

Set the location of the XML file that defines the view beans.

The default is "/WEB-INF/views.xml".

Parameters:

location - the location of the XML file.

initApplicationContext

protected void initApplicationContext()
                               throws ApplicationContextException

Pre-initialize the factory from the XML file. Only effective if caching is enabled.

Overrides:

initApplicationContext in class ApplicationObjectSupport

loadView

protected View loadView(java.lang.String viewName,
                        java.util.Locale locale)
                 throws javax.servlet.ServletException

Description copied from class: AbstractCachingViewResolver

Subclasses must implement this method. There need be no concern for efficiency, as this class will cache views. Not all subclasses may support internationalization: A subclass that doesn't can ignore the locale parameter.

Overrides:

loadView in class AbstractCachingViewResolver

Following copied from class: com.interface21.web.servlet.view.AbstractCachingViewResolver

Parameters:

viewName - name of the view to retrieve

locale - Locale to retrieve the view for

Returns:

the View if it can be resolved, or null

Throws:

javax.servlet.ServletException - if there is an error trying to resolve the view

initFactory

protected BeanFactory initFactory()
                           throws java.io.IOException,
                                  BeansException

Initialize the BeanFactory from the XML file. Synchronized because of access by parallel threads.