No use provider could resolve identifier

[sid_mup]

Hi,

I'm trying to use custom functions that I wrote in core project in utility folder.

i'm getting the following error when i refer the class in a component.

org.apache.sling.scripting.sightly.impl.engine.extension.use.UseRuntimeExtension No use provider could resolve identifier org.xxx.xxx.core.utility.HelperFunctions

My method looks like this:

----------------------------------------------------------------------------------------------------------------------------------------------------------------

package org.xxx.xxx.core.utility;

import com.adobe.cq.sightly.WCMUse;

public class HelperFunctions extends WCMUse{

    private String lowerCaseTitle;
    private String lowerCaseDescription;
  
    @Override
    public void activate() throws Exception {
        lowerCaseTitle = "Hi World title";
        lowerCaseDescription = "Hello World Description";
    }
  
    public String getLowerCaseTitle() {
        return lowerCaseTitle;
    }
    public String getLowerCaseDescription() {
        return lowerCaseDescription;
    }   

}

---------------------------------------------------------------------------------------------------------------------------------------------------------------

I'm referring in my component like this:

            <div data-sly-use.myhelp="org.xxx.xxx.core.utility.HelperFunctions">
                <p>
                    ${myhelp.lowerCaseTitle}
                </p>
                <p>
                    ${myhelp.lowerCaseDescription}
                </p>
            </div>

----------------------------------------------------------------------------------------------------------------------------------------------------------------

When i move this helper function to the component location where im using, my function is working. but when i use it from core project, im getting the above error.

Thanks for the help in advance!

[sid_mup · Accepted solution]

Sid Mup wrote...

Hi,

I'm trying to use custom functions that I wrote in core project in utility folder.

i'm getting the following error when i refer the class in a component.

org.apache.sling.scripting.sightly.impl.engine.extension.use.UseRuntimeExtension No use provider could resolve identifier org.xxx.xxx.core.utility.HelperFunctions

My method looks like this:

----------------------------------------------------------------------------------------------------------------------------------------------------------------

package org.xxx.xxx.core.utility;

import com.adobe.cq.sightly.WCMUse;

public class HelperFunctions extends WCMUse{

    private String lowerCaseTitle;
    private String lowerCaseDescription;
  
    @Override
    public void activate() throws Exception {
        lowerCaseTitle = "Hi World title";
        lowerCaseDescription = "Hello World Description";
    }
  
    public String getLowerCaseTitle() {
        return lowerCaseTitle;
    }
    public String getLowerCaseDescription() {
        return lowerCaseDescription;
    }   

}

---------------------------------------------------------------------------------------------------------------------------------------------------------------

I'm referring in my component like this:

            <div data-sly-use.myhelp="org.xxx.xxx.core.utility.HelperFunctions">
                <p>
                    ${myhelp.lowerCaseTitle}
                </p>
                <p>
                    ${myhelp.lowerCaseDescription}
                </p>
            </div>

----------------------------------------------------------------------------------------------------------------------------------------------------------------

When i move this helper function to the component location where im using, my function is working. but when i use it from core project, im getting the above error.

Thanks for the help in advance!

I found the issue.

When im creating my eclipse project with AEM sample template,  i gave artifacts id with a capital letter. It seems, if artifacts Id has a capital letter, its not throwing any error, but all there java classes i added in core is not getting reffered. even default home page functions also not working.

So i created a new project with artifacts id all small letters, all my java functions in core started working.

it must be some bug or it a requirement that artifact ID cannot start with a capital letter.

Old artifact id: "Studio"

New artifact id: "studio"

Hope this helps if any body is facing the same issue. It took me 2 days to figure it out. 

Thanks,

Siddhartha Mupparaju