NewsPortlet - JBOSS Portal 2.6 API 英文版文档

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org.jboss.samples.portlet.news
Class NewsPortlet

java.lang.Object
  javax.portlet.GenericPortlet
      org.jboss.samples.portlet.news.NewsPortlet

All Implemented Interfaces:: Portlet

public class NewsPortlet
extends GenericPortlet

Adapted from JBoss Weather Portlet to deal with RSS News Feeds using RSS 1.0 or RSS 2.0 format.

Author:: Roy Russo

Field Summary

private static java.lang.String E_UNPARSEABLE


private static java.lang.String E_UNREADABLE


private static java.lang.String E_XSL_UNREADABLE


private static java.lang.String JSP_EDIT
          Edit page

static org.apache.log4j.Logger log
          Logger

private java.lang.String RSS_URL
          Base URL of News RSS

private static java.lang.String RSS1_XSL
          RSS 1.0 XSL page for output

private static java.lang.String RSS2_XSL
          RSS 2.0 XSL page for output

private javax.xml.transform.Templates template_1_0
          Compiled Template for output RSS 1.0

private javax.xml.transform.Templates template_2_0
          Compiled Template for output RSS 2.0

Fields inherited from class javax.portlet.GenericPortlet

Constructor Summary

NewsPortlet()


Method Summary

protected void doEdit(RenderRequest request, RenderResponse response)
          Allow edit of RSS Feed.

protected void doView(RenderRequest request, RenderResponse response)
          Helper method to serve up the mandatory view mode.

void init()
          Compile the XSL File.

void processAction(ActionRequest request, ActionResponse response)
          Process RSS Feed edit.

Methods inherited from class javax.portlet.GenericPortlet

destroy, doDispatch, doHelp, getInitParameter, getInitParameterNames, getPortletConfig, getPortletContext, getPortletName, getResourceBundle, getTitle, init, render

Methods inherited from class java.lang.Object

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

Field Detail

log

public static org.apache.log4j.Logger log

Logger

JSP_EDIT

private static final java.lang.String JSP_EDIT

Edit page

See Also:: Constant Field Values

RSS2_XSL

private static final java.lang.String RSS2_XSL

RSS 2.0 XSL page for output

See Also:: Constant Field Values

RSS1_XSL

private static final java.lang.String RSS1_XSL

RSS 1.0 XSL page for output

See Also:: Constant Field Values

template_2_0

private javax.xml.transform.Templates template_2_0

Compiled Template for output RSS 2.0

template_1_0

private javax.xml.transform.Templates template_1_0

Compiled Template for output RSS 1.0

RSS_URL

private java.lang.String RSS_URL

Base URL of News RSS

E_XSL_UNREADABLE

private static final java.lang.String E_XSL_UNREADABLE

See Also:: Constant Field Values

E_UNREADABLE

private static final java.lang.String E_UNREADABLE

See Also:: Constant Field Values

E_UNPARSEABLE

private static final java.lang.String E_UNPARSEABLE

See Also:: Constant Field Values

Constructor Detail

NewsPortlet

public NewsPortlet()

Method Detail

init

public void init()

Compile the XSL File.

Overrides:: init in class GenericPortlet

doView

protected void doView(RenderRequest request,
                      RenderResponse response)
               throws java.io.IOException,
                      PortletException

Description copied from class: GenericPortlet

Helper method to serve up the mandatory view mode.

The default implementation throws an exception.

Overrides:: doView in class GenericPortlet

Parameters:: request - the portlet request; response - the render response
Throws:: PortletException - if the portlet cannot fulfilling the request; java.io.IOException - if the streaming causes an I/O problem

doEdit

protected void doEdit(RenderRequest request,
                      RenderResponse response)
               throws java.io.IOException,
                      PortletException

Allow edit of RSS Feed.

Overrides:: doEdit in class GenericPortlet

Parameters:: request -; response -
Throws:: java.io.IOException; PortletException

processAction

public void processAction(ActionRequest request,
                          ActionResponse response)
                   throws PortletException

Process RSS Feed edit.

Specified by:: processAction in interface Portlet
Overrides:: processAction in class GenericPortlet

Parameters:: request -; response -
Throws:: PortletException