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SOLVED

Context Aware - ConfigurationBuilder.as() is returning Null

Avatar

Level 2

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;

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

@property(
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??

1 Accepted Solution

Avatar

Correct answer by
Community Advisor

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;

/**
* @Return 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;

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

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

}

 

 Configuration references and Context /Content resources below -

DEBAL_DAS_0-1644978479408.pngDEBAL_DAS_1-1644978839151.png

 

See this value is getting displayed on page -

 

DEBAL_DAS_2-1644979022513.png

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

View solution in original post

4 Replies

Avatar

Community Advisor

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;

/**
* @author 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;

/**
* @Return the countryName
*/

public String getCountryName() {
return countryName;
}

/**
* @Return the capitalName
*/

public String getCapitalName() {
return capitalName;
}

/**
* @Return the financialCapital
*/

public String getFinancialCapital() {
return financialCapital;
}

/**
* @Return 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) {

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

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

}

return null;

}

}

 

Hope this will help.

Avatar

Level 2

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;
}

}

Avatar

Correct answer by
Community Advisor

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;

/**
* @Return 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;

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

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

}

 

 Configuration references and Context /Content resources below -

DEBAL_DAS_0-1644978479408.pngDEBAL_DAS_1-1644978839151.png

 

See this value is getting displayed on page -

 

DEBAL_DAS_2-1644979022513.png

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