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sreedobe
sreedobe
Level 4
November 17, 2020
Solved

Get component resource in a servlet

  • November 17, 2020
  • 4 replies
  • 7574 views

I have cq dialog field mapped to a servlet using resourceType to populate data source.

 

How can I get component resource object in aem servlet. request.getResource() returning the dialog field resource.   I would like to get the component resource of dialog field, so I could use it to get component policy values.

 

Thanks,

Sri

 

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Best answer by Shubham_borole

How is the call to servlet made? If there is an Ajax call via js, may be pass the resource path as a query param or form data making it a post call. That way we can do

String path = request.getParameter("resourcePath").

String path = request.getParameter("resourcePath"); Resource resource = request.getResourceResolver().resolve(path);

Other than may be we can try 

String pagePath = request.getRequestURI(); Resource pageRes = request.getResourceResolver().resolve(pagePath); //Once we get page resource find the desired resource node below that with resourcetype needed

For datasource there are examples of using Model classes too 
In the datasource node we point the sling:resourceType property to a sighly html file that does a <sly data-sly-use.model="com.myproject.MyModel">
The MyModel class will contain the logic needed
I think I have seen similar implementation by @arunpatidar  unable to find the example using Model class.
But this https://github.com/arunpatidar02/aem63app-repo/blob/master/java/DatasourceJson.java seems to be using a servlet.

4 replies

Shubham_borole
Community Advisor
Shubham_boroleCommunity AdvisorAccepted solution
Community Advisor
November 17, 2020

How is the call to servlet made? If there is an Ajax call via js, may be pass the resource path as a query param or form data making it a post call. That way we can do

String path = request.getParameter("resourcePath").

String path = request.getParameter("resourcePath"); Resource resource = request.getResourceResolver().resolve(path);

Other than may be we can try 

String pagePath = request.getRequestURI(); Resource pageRes = request.getResourceResolver().resolve(pagePath); //Once we get page resource find the desired resource node below that with resourcetype needed

For datasource there are examples of using Model classes too 
In the datasource node we point the sling:resourceType property to a sighly html file that does a <sly data-sly-use.model="com.myproject.MyModel">
The MyModel class will contain the logic needed
I think I have seen similar implementation by @arunpatidar  unable to find the example using Model class.
But this https://github.com/arunpatidar02/aem63app-repo/blob/master/java/DatasourceJson.java seems to be using a servlet.

    Manjunath_K
    Manjunath_K
    Level 7
    November 17, 2020

    Hi @sreedobe 

    If its resource based servlet then you can access component policy configuration by passing current resource to getPolicy(). in below example component policy configuration has title field & same configured value is retrieved using ContentPolicyManager.

     

    ContentPolicyManager policyManager = request.getResourceResolver().adaptTo(ContentPolicyManager.class);
    if (policyManager != null) {
        ContentPolicy contentPolicy = policyManager.getPolicy(request.getResource()); //ex: request.getResource() path "/content/test-page/jcr:content/root/component"
        if (contentPolicy != null) {
            String title= contentPolicy.getProperties().get("title",String.class);
        }
    }

    refer this article:

    https://techrevel.blog/2017/08/28/aem-template-editor-design-configuration-via-policies/

     

     

    Hope this helps!

     

      arunpatidar
      Community Advisor
      arunpatidarCommunity Advisor
      Community Advisor
      November 17, 2020

      Please check datasource example at

       

      Datasource servlet

      https://github.com/adobe/aem-core-wcm-components/blob/master/bundles/core/src/main/java/com/adobe/cq/wcm/core/components/internal/servlets/AllowedHeadingElementsDataSourceServlet.java

      Dailog

      https://github.com/adobe/aem-core-wcm-components/blob/master/content/src/content/jcr_root/apps/core/wcm/components/title/v2/title/_cq_dialog/.content.xml

      Design Dialog

      https://github.com/adobe/aem-core-wcm-components/blob/master/content/src/content/jcr_root/apps/core/wcm/components/title/v2/title/_cq_design_dialog/.content.xml

       

      Arun Patidar
        sreedobe
        sreedobeAuthor
        Level 4
        November 17, 2020
        That is what I followed in actual implementation. Thanks for aem core code reference though.
        Anudeep_Garnepudi
        Community Advisor
        Anudeep_GarnepudiCommunity Advisor
        Community Advisor
        November 18, 2020

        Hi @sreedobe 

        Can get ComponentContext from request. Try this

        ContentPolicyManager policyManager = resolver.adaptTo(ContentPolicyManager.class);
        ComponentContext componentContxt = (ComponentContext) request.getAttribute("com.day.cq.wcm.componentcontext");
        ContentPolicy policy = policyManager.getPolicy(componentContxt);

        Hope it works!

        AG

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