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Jakarta Struts Cookbook
book

Jakarta Struts Cookbook

by Bill Siggelkow
February 2005
Intermediate to advanced content levelIntermediate to advanced
528 pages
12h 53m
English
O'Reilly Media, Inc.
Content preview from Jakarta Struts Cookbook

2.8. Selectively Disabling Actions

Problem

You want to disable an action using a custom property that can be set on the action element in your struts-config.xml file; forwarding any requests to the disabled action to an "under construction" page.

Solution

Create a custom ActionMapping extension (as shown in Example 2-16) that provides a boolean property indicating if the action is disabled or not.

Example 2-16. Custom ActionMapping

import org.apache.struts.action.ActionMapping;

public class DisablingActionMapping extends ActionMapping {

    private String disabled;
    private boolean actionDisabled = false;
    
    public String getDisabled( ) {
        return disabled;
    }

    public void setDisabled(String disabled) {
        this.disabled = disabled;
        actionDisabled = new Boolean(disabled).booleanValue( );
    }
    
    public boolean isActionDisabled( ) {
        return actionDisabled;
    }
}

This action mapping class can now be specified in the struts-config.xml file. You set the disabled property to true if an action is to be disabled:

<action-mappings type="com.oreilly.strutsckbk.DisablingActionMapping">

  <!-- Edit mail subscription -->
  <action    path="/editSubscription"
             type="org.apache.struts.webapp.example.EditSubscriptionAction"
        attribute="subscriptionForm"
            scope="request"
         validate="false">
    <set-property property="disabled" value="true"/>
    <forward name="failure"              path="/mainMenu.jsp"/>
    <forward name="success"              path="/subscription.jsp"/>
  </action>

Then create a custom RequestProcessor, such as the one shown in Example 2-17, that handles the ...

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Publisher Resources

ISBN: 059600771XSupplemental ContentErrata Page