Context Aware - ConfigurationBuilder.as() is returning Null | Community
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S
shivama92274331
Level 2
February 15, 2022
Solved

Context Aware - ConfigurationBuilder.as() is returning Null

  • February 15, 2022
  • 1 reply
  • 2307 views

i am getting myConfig.class returning as Null. below is the code to fetch it in my sling model class.

 

Resource contentResource = resolver.getResource(currentPage.getPath());

ConfigurationBuilder caconfig = contentResource.adaptTo(ConfigurationBuilder.class); //caconfig is returning value and its non-empty.

MyConfig pensConfig = caconfig.as(MyConfig .class); //pensConfig  is returning NULL here.

pensConfig.apiURL(); 

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

It seems caconfig.as(MyConfig.class) is not working as expected. Below is the config class.

import org.apache.sling.caconfig.annotation.Configuration;
import org.apache.sling.caconfig.annotation.Property;

@2932483(
label="API Configuration ",
description="Template configuration for Pension Pot Info",
name="templateDefinitions/MyConfig"
)
public @interface MyConfig{

@2542150(
label="GET API url",
description="API URL to get info",
order=1
)
String apiURL() default "http://somerandom";

}

 

i can see at http://localhost:4502/system/console/slingcaconfig, the CA config is resolving. What i am still missing??

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Best answer by DEBAL_DAS

As I am not aware about PDPensionsPotInfo so, I have removed interface: PDPensionsPotInfo from your sling model and here is the code -

 

package com.aem.demo.core.models;

import javax.annotation.PostConstruct;

import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.caconfig.ConfigurationBuilder;
import org.apache.sling.models.annotations.Model;
import org.apache.sling.models.annotations.injectorspecific.ScriptVariable;
import org.apache.sling.models.annotations.injectorspecific.SlingObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.aem.demo.core.configurations.MyConfig;

import com.day.cq.wcm.api.Page;

@Model(adaptables = { SlingHttpServletRequest.class, Resource.class}, resourceType = PDPensionsPotInfoImpl.RESOURCE_TYPE)
public class PDPensionsPotInfoImpl {
private static final Logger LOG = LoggerFactory.getLogger(PDPensionsPotInfoImpl.class);
protected static final String RESOURCE_TYPE = "weretail/components/content/app";


@SlingObject private Resource resource;

@SlingObject
private ResourceResolver resolver;

@ScriptVariable
Page currentPage;

private String url;

/**
* @2007960 the url
*/
public String getUrl() {
return url;
}

@PostConstruct
protected void initModel() {
LOG.info("*** Current Page Path *** {}", currentPage.getPath());
Resource contentResource = resolver.getResource(currentPage.getPath());

ConfigurationBuilder caconfig = contentResource.adaptTo(ConfigurationBuilder.class);

MyConfig pensConfig = caconfig.as(MyConfig.class);

url = pensConfig.apiURL();

}

}

 

Context aware configuration

package com.aem.demo.core.configurations;

import org.apache.sling.caconfig.annotation.Configuration;
import org.apache.sling.caconfig.annotation.Property;

@2932483(label = "API Configuration ", description = "Template configuration for Pension Pot Info", name = "templateDefinitions/MyConfig")

public @interface MyConfig {
@2542150(label = "GET API url", description = "API URL to get info", order = 1)
String apiURL() default "http://somerandom";

}

 

 Configuration references and Context /Content resources below -

 

See this value is getting displayed on page -

 

could you please check Configuration references and Context /Content resources in your AEM instance.

1 reply

DEBAL_DAS
DEBAL_DAS
New Member
February 15, 2022

How are you getting ResourceResolver object in your sling model , I feel issue with ResouceResolver object.

 

You can refer the below code and please review the ResourceResolver object -

 


package com.aem.demo.core.models;

import java.util.Objects;

import javax.annotation.PostConstruct;

import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.caconfig.ConfigurationBuilder;
import org.apache.sling.models.annotations.DefaultInjectionStrategy;
import org.apache.sling.models.annotations.Model;
import org.apache.sling.models.annotations.injectorspecific.ScriptVariable;
import org.apache.sling.models.annotations.injectorspecific.SlingObject;

import com.aem.demo.core.configurations.DemoCountryConfiguration;
import com.day.cq.wcm.api.Page;
import com.drew.lang.annotations.Nullable;

/**
* @380 debal
*
*/

@Model(adaptables = { SlingHttpServletRequest.class }, resourceType = {
ReadCountryInfoModel.RESOURCE_TYPE }, defaultInjectionStrategy = DefaultInjectionStrategy.OPTIONAL)
public class ReadCountryInfoModel {

protected static final String RESOURCE_TYPE = "weretail/components/content/app";

@SlingObject
ResourceResolver resourceResoulver;

@ScriptVariable
private Page currentPage;

private String countryName;

private String capitalName;

private String financialCapital;

private String prefix;

private DemoCountryConfiguration demoCountryConfiguration;

/**
* @2007960 the countryName
*/

public String getCountryName() {
return countryName;
}

/**
* @2007960 the capitalName
*/

public String getCapitalName() {
return capitalName;
}

/**
* @2007960 the financialCapital
*/

public String getFinancialCapital() {
return financialCapital;
}

/**
* @2007960 the prefix
*/
public String getPrefix() {
return prefix;
}

@PostConstruct
protected void postConstruct() {

demoCountryConfiguration = getContextAwareConfiguration(currentPage.getPath(), resourceResoulver);
countryName = demoCountryConfiguration.countryName();
capitalName = demoCountryConfiguration.capitalName();
financialCapital = demoCountryConfiguration.financialcapitalName();
prefix = demoCountryConfiguration.prefix();
}

private DemoCountryConfiguration getContextAwareConfiguration(String path, ResourceResolver resourceResoulver) {

@3146596
Resource resource = resourceResoulver.getResource(path);
if (Objects.nonNull(resource)) {

@3146596
ConfigurationBuilder configurationBuilder = resource.adaptTo(ConfigurationBuilder.class);
if (Objects.nonNull(configurationBuilder)) {
return configurationBuilder.as(DemoCountryConfiguration.class);
}

}

return null;

}

}

 

Hope this will help.

Debal Das, Senior AEM Consultant
    S
    shivama92274331Author
    Level 2
    February 15, 2022

    Hi @debal_das ,

     

    i am getting resource resolver object through @SlingObject, here is my entire model class code.

     

    package myprj.core.models.impl;

    import javax.annotation.PostConstruct;

    import org.apache.sling.api.SlingHttpServletRequest;
    import org.apache.sling.api.resource.Resource;
    import org.apache.sling.api.resource.ResourceResolver;
    import org.apache.sling.caconfig.ConfigurationBuilder;
    import org.apache.sling.models.annotations.Model;
    import org.apache.sling.models.annotations.injectorspecific.ScriptVariable;
    import org.apache.sling.models.annotations.injectorspecific.Self;
    import org.apache.sling.models.annotations.injectorspecific.SlingObject;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;

    import com.day.cq.wcm.api.Page;

    import myprj.core.config.PensionPotConfiguration;
    import myprj.core.models.PDPensionsPotInfo;

    @Model(adaptables = { SlingHttpServletRequest.class, Resource.class }, adapters = {
    PDPensionsPotInfo.class }, resourceType = PDPensionsPotInfoImpl.RESOURCE_TYPE)

    public class PDPensionsPotInfoImpl implements PDPensionsPotInfo {

    private static final Logger LOG = LoggerFactory.getLogger(PDPensionsPotInfoImpl.class);
    protected static final String RESOURCE_TYPE = "myprj/core/components/content/pdp/pd-pensions-pot-info";

    @Self
    private PDPensionsPotInfoApiSettings pensionAPISettings;

    @Self
    private PDPensionsPotInfoMayBe pensionMayBe;

    @Self
    private PDPensionsPotInfoMatchFound pensionMatchFound;


    @SlingObject private Resource resource;

    @SlingObject private ResourceResolver resolver;

    @ScriptVariable Page currentPage;


    @PostConstruct
    protected void initModel() {
    Resource contentResource = resolver.getResource(currentPage.getPath());

    ConfigurationBuilder caconfig = contentResource.adaptTo(ConfigurationBuilder.class);

    PensionPotConfiguration pensConfig = caconfig.as(PensionPotConfiguration.class);

    pensConfig.apiURL();

    }

    @Override
    public PDPensionsPotInfoApiSettings getPensionAPISettings() {
    return pensionAPISettings;
    }

    @Override
    public PDPensionsPotInfoMayBe getPensionMayBe() {
    return pensionMayBe;
    }

    @Override

    public PDPensionsPotInfoMatchFound getPensionMatchFound() {
    return pensionMatchFound;
    }

    }

      DEBAL_DAS
      DEBAL_DASAccepted solution
      New Member
      February 16, 2022

      As I am not aware about PDPensionsPotInfo so, I have removed interface: PDPensionsPotInfo from your sling model and here is the code -

       

      package com.aem.demo.core.models;

      import javax.annotation.PostConstruct;

      import org.apache.sling.api.SlingHttpServletRequest;
      import org.apache.sling.api.resource.Resource;
      import org.apache.sling.api.resource.ResourceResolver;
      import org.apache.sling.caconfig.ConfigurationBuilder;
      import org.apache.sling.models.annotations.Model;
      import org.apache.sling.models.annotations.injectorspecific.ScriptVariable;
      import org.apache.sling.models.annotations.injectorspecific.SlingObject;
      import org.slf4j.Logger;
      import org.slf4j.LoggerFactory;

      import com.aem.demo.core.configurations.MyConfig;

      import com.day.cq.wcm.api.Page;

      @Model(adaptables = { SlingHttpServletRequest.class, Resource.class}, resourceType = PDPensionsPotInfoImpl.RESOURCE_TYPE)
      public class PDPensionsPotInfoImpl {
      private static final Logger LOG = LoggerFactory.getLogger(PDPensionsPotInfoImpl.class);
      protected static final String RESOURCE_TYPE = "weretail/components/content/app";


      @SlingObject private Resource resource;

      @SlingObject
      private ResourceResolver resolver;

      @ScriptVariable
      Page currentPage;

      private String url;

      /**
      * @2007960 the url
      */
      public String getUrl() {
      return url;
      }

      @PostConstruct
      protected void initModel() {
      LOG.info("*** Current Page Path *** {}", currentPage.getPath());
      Resource contentResource = resolver.getResource(currentPage.getPath());

      ConfigurationBuilder caconfig = contentResource.adaptTo(ConfigurationBuilder.class);

      MyConfig pensConfig = caconfig.as(MyConfig.class);

      url = pensConfig.apiURL();

      }

      }

       

      Context aware configuration

      package com.aem.demo.core.configurations;

      import org.apache.sling.caconfig.annotation.Configuration;
      import org.apache.sling.caconfig.annotation.Property;

      @2932483(label = "API Configuration ", description = "Template configuration for Pension Pot Info", name = "templateDefinitions/MyConfig")

      public @interface MyConfig {
      @2542150(label = "GET API url", description = "API URL to get info", order = 1)
      String apiURL() default "http://somerandom";

      }

       

       Configuration references and Context /Content resources below -

       

      See this value is getting displayed on page -

       

      could you please check Configuration references and Context /Content resources in your AEM instance.

      Debal Das, Senior AEM Consultant
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