Base Action

The DisplayURL portlet's BaseAction class is a superclass which is extended by the DisplayAction, EditorAction, OkAction, and CancelAction classes. The source code is shown below.

/**Copyright (c) 2003 by SAS Institute Inc., Cary, NC 27513.
 * All Rights Reserved.
 */
package com.sas.portal.portlets.displayurl;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.sas.portal.Logger;
import com.sas.portal.container.deployment.PortletActionInfoInterface;
import com.sas.portal.portlet.NavigationUtil;
import com.sas.portal.portlet.PortletActionInterface;
import com.sas.portal.portlet.PortletContext;
import com.sas.portal.portlets.displayurl.Initializer;

public abstract class BaseAction implements PortletActionInterface
{
    private final String _loggingContext = this.getClass().getName();

    private PortletActionInfoInterface _actionInfo = null;

    /**
     * This method must be overridden in subclasses. 
	 * They must call super and supply a return value.
     * In this class, the method returns null.
     * 
     * @see com.sas.portal.portlet.PortletActionInterface#service(
     * HttpServletRequest, HttpServletResponse, PortletContext)
     */
    public String service(HttpServletRequest request,
                          HttpServletResponse response,
                          PortletContext context) throws Exception
    {
    	Logger.debug("started..", _loggingContext);
        response.setContentType("text/html;charset=UTF-8");
		
        // prepare the localized resources for use by the jsp.
        try {
            NavigationUtil.prepareLocalizedResources(
                 "com.sas.portal.portlets.displayurl.Resources", 
				 request, context);
        }
        catch (java.io.IOException ioe) {
            Logger.error(ioe.getMessage(), _loggingContext, ioe);
        }
    
        return null;
    }

    /**
     * @see com.sas.portal.portlet.PortletActionInterface#setInfo(
     * PortletActionInfoInterface)
     */
    public final void setInfo(PortletActionInfoInterface info)
    {
        _actionInfo = info;
    }

    /**
     * @see com.sas.portal.portlet.PortletActionInterface#getInfo()
     */
    public final PortletActionInfoInterface getInfo()
    {
        return _actionInfo;
    }
    

    /**
     * Check the PortletContext for an exception object. If present,
	 * throw it so that the error handler will kick in.
     * @param context the PortletContext
     */
    protected static final void errorCheck(PortletContext context)
	    throws Exception
    {
        Exception e = (Exception)context.getAttribute(
          Initializer.PORTLET_EXCEPTION_KEY); 
        if (e != null)
            throw e;
    }
}