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Access project data via sling servlet.

Forum|Forum|8 years ago
November 24, 2017
5 replies
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Hi,

I'm trying to access project data in AEM via a sling servlet. The servlet is working and I'm able to make an ajax POST call to retrieve a simple JSON object on the client side. As the next step, I'd like to be able to iterate over projects under /content/projects/<foldername> using the project API. So far, I'm just trying to get the titles for all projects as a String, but it doesn't seem to be working. If I remove the project iterator in the getProjectList() method, it returns the JSON object correctly, otherwise, there's an empty response. I tried passing a filter into the projectManager.getProjects() as well, that didn't seem to help either.

I am a Java newbie, so any pointers would be helpful.

This is what I have so far in my servlet:

package ca.rogers.core.servlets;
import org.apache.felix.scr.annotations.Reference;
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.servlets.SlingAllMethodsServlet;
import org.apache.sling.api.servlets.SlingSafeMethodsServlet;
import org.apache.sling.commons.json.JSONException;
import org.apache.sling.commons.json.JSONObject;
import org.osgi.service.component.annotations.Component;
import org.apache.sling.api.servlets.HttpConstants;
import javax.servlet.Servlet;
import javax.jcr.Repository;
import javax.servlet.ServletException;
import java.io.IOException;
import org.osgi.framework.Constants;
import org.apache.sling.jcr.api.SlingRepository;
import java.rmi.ServerException;
import java.util.UUID;
import com.adobe.cq.projects.api.Project;
import com.adobe.cq.projects.api.ProjectFilter;
import com.adobe.cq.projects.api.ProjectManager;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.api.resource.ResourceResolverFactory;
import org.apache.sling.api.resource.ValueMap;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Iterator;
@Component(service=Servlet.class,
property={
        Constants.SERVICE_DESCRIPTION + "=Project Servlet",
        "sling.servlet.methods=" + HttpConstants.METHOD_POST,
        "sling.servlet.paths="+ "/bin/cceprojectservlet",
        "sling.servlet.metatype=" + true,
})
public class ProjectServlet extends SlingAllMethodsServlet {
      
     @Reference
     private SlingRepository repository;
      
     public void bindRepository(SlingRepository repository) {
            this.repository = repository; 
            }
    
    @Reference
    private ProjectManager projectManager;
           
     @Override
     protected void doPost(SlingHttpServletRequest request, SlingHttpServletResponse response) throws ServerException, IOException {
      try{
          
          String PROJECT_REQUEST_PATH = request.getParameter("rootFolder");
          String projectList = getProjectList();          
          
          JSONObject obj = new JSONObject();
          
          obj.put("rootFolder", PROJECT_REQUEST_PATH);
          obj.put("projectsList", projectList);
          
          String jsonData = obj.toString();
          
          response.getWriter().write(jsonData);
      }
      catch(Exception e){
          e.printStackTrace();
      }
    }
    
    private String getProjectList(){
        Iterator<Project> projects = projectManager.getProjects(null, 0, 10);
        String projectsList = "";
        while(projects.hasNext()){
            Project px = projects.next();
            projectsList += px.getTitle();
        }
        return projectsList;
    }
}

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Best answer by neelesh1590

usmankhalidbutt

Every project has a jcr:content and contains all details like created date, created by user, project path, experience fragments associated with project etc

Resource parent = resourceResolver.getResource(rootPath);

Iterator<Resource> children = parent.listChildren();
while (children.hasNext()) {
Resource child = children.next();

Resource jcrResource=child.getChild("jcr:content");

ValueMap vm = jcrResource.getValueMap();

//Use valuemap object to pass propertyname(go through jcr:content of that project ) and get value for each property

String title = vm.get("jcr:title","defaultValue");

//Please use the same way to get other property values

}

Please let me know ,if this helps.

N

neelesh1590

Adobe Employee

Hi Usman,

Try this code

List<String> projectsList=new ArrayList<String> ();

ProjectManager projectManager = resourceResolver.adaptTo(ProjectManager.class);

ProjectFilter filters = new ProjectFilter();

List<String> templates = new ArrayList<String>();

templates.add("/libs/cq/core/content/projects/templates/default");//Add templates of your projects

filters.setProjectTemplates(templates);

Iterator<Project> projects = pm.getProjects(filters, 0, 10);

while (projects.hasNext()) {

Project project = projects.next();

projectsList.add(project.getTitle());

}

Add projectsList to your json response.

Let me know, if it works.

Regards,

Neelesh

U

usmankhalidbuttAuthor

Thanks neeleshkumar

Any ideas on how I could get the remaining properties (created date, created by user, project path, experience fragments associated with project etc)?