Reading multifiled configurations in Adobe CQ/AEM

Please refer:

http://experiencedelivers.adobe.com/cemblog/en/experiencedelivers/2012/03/using-multifield-in-your-component.html

AEM Developer Tools for Eclipse

http://eclipse.adobe.com/aem/dev-tools/

http://docs.adobe.com/content/docs/en/dev-tools/aem-eclipse.html

What’s New in AEM 6.0 ?

Please refer the below URL:

http://cq-ops.tumblr.com/post/86504895994/whats-new-in-aem-6-0

Issues when using LESS CSS in Adobe CQ/AEM

When working with LESS CSS in adobe CQ, make a note point during your check in/packaging.

When you open a page, the .less files are converted to .css files as shown below:

etc/designs/myapp/
                         css/static.less

etc/designs/myapp/
                         css/generated/static.css
                         css/static.less

In this case, make sure you should not check in/package your generated folder and its sub folders/files. What you want to check in/package is just your .less files. 

If you check in/package the generated folder, you may run in to issues when your less  files are updated. This means, when a less file is updated, the generated css file may not update with the latest code all times.

CQ5 Training Videos

Here are the awesome videos for Adobe CQ:

https://outv.omniture.com/

How to refresh a page when a component is modified

A change was made to a component by an author. The page need to be refreshed in order to immediately reflect the change. Is there a way to automate this such that the author does not need to refresh the page? 

Resolution
The cq:listeners [cq:EditListenersConfig] is used to refresh the HTML page after a certain action is performed on a component. The cq:listeners node should be located as shown:

/component-name [cq:Component]
   /cq:editConfig [cq:editConfig]
      /cq:listeners [cq:EditListenersConfig]

NOTE: Text in the "[]" is the nodetype. Text after "/" is the node name -- should be extact name except for the "component-name".

The following properties are associated with cq:listeners node are:

aftercreate
afterdelete
afteredit
afterinsert
aftermove
afterremove

There are three possible values that can be assigned to the properties above -- either "REFRESH_SELF", "REFRESH_PARENT", "REFRESH_PAGE".

So, if you want your text component to cause a page refresh after each edit, you would create the following structure:

...
/mytextcomponent [cq:Component]
   /cq:editConfig [cq:editConfig]
      /cq:listeners [cq:EditListenersConfig]
         - afteredit {REFRESH_PAGE}             <= property {value}
   mytextcomponent.jsp                          <= code

Refer:

http://helpx.adobe.com/experience-manager/kb/RefreshPageWhenModifyDialog.html

what is the use of Activator.java in CQ ?

Symptoms

A change was made to a component by an author. The page need to be refreshed in order to immediately reflect the change. Is there a way to automate this such that the author does not need to refresh the page?

Resolution

The cq:listeners [cq:EditListenersConfig] is used to refresh the HTML page after a certain action is performed on a component. The cq:listeners node should be located as shown: 

/component-name [cq:Component]

   /cq:editConfig [cq:editConfig]

      /cq:listeners [cq:EditListenersConfig]

NOTE: Text in the "[]" is the nodetype. Text after "/" is the node name -- should be extact name except for the "component-name".

The following properties are associated with cq:listeners node are:

aftercreate

afterdelete

afteredit

afterinsert

aftermove

afterremove

There are three possible values that can be assigned to the properties above -- either "REFRESH_SELF", "REFRESH_PARENT", "REFRESH_PAGE".

So, if you want your text component to cause a page refresh after each edit, you would create the following structure:

...

/mytextcomponent [cq:Component]

   /cq:editConfig [cq:editConfig]

      /cq:listeners [cq:EditListenersConfig]

         - afteredit {REFRESH_PAGE}             <= property {value}

   mytextcomponent.jsp                          <= code

Refer:

http://helpx.adobe.com/experience-manager/kb/RefreshPageWhenModifyDialog.html

 

Implementing a Custom Predicate Evaluator for the Query Builder

Refer below URL:

http://dev.day.com/content/docs/en/cq/current/developing/implementing-custom-predicate-evaluator.html

Check Authentication in CQ

AuthCheckerServlet.java

import org.apache.felix.scr.annotations.sling.SlingServlet;

import org.apache.sling.api.SlingHttpServletRequest;

import org.apache.sling.api.SlingHttpServletResponse;

import org.apache.sling.api.resource.Resource;

import org.apache.sling.api.resource.ResourceUtil;

import org.apache.sling.api.servlets.SlingSafeMethodsServlet;

@SlingServlet(paths = "/bin/permissioncheck/html", generateComponent = true, generateService = true)

public class AuthCheckerServlet extends SlingSafeMethodsServlet {

    public void doGet(SlingHttpServletRequest request, SlingHttpServletResponse response) {       

        String uri = request.getParameter("uri");       

        Resource resource = request.getResourceResolver().resolve(uri);       

        if(ResourceUtil.isNonExistingResource(resource)) {           

            response.setStatus(SlingHttpServletResponse.SC_FORBIDDEN);           

            } else {           

            response.setStatus(SlingHttpServletResponse.SC_OK);           

        }       

    }   

}