due to @ChildResourceFromRequest my unit test cases are getting failed while writing unit testcases for AEM component

[rahul234dabas]

hi , all my testcases are getting failed showing runtime exception if I am including @ChildResourceFromRequest in my model class .

Model class : 

package comcore.models.components.content.collections.locations;

import com.adobe.acs.commons.models.injectors.annotation.ChildResourceFromRequest;
import com.core.configurations.GoogleMapAPIConfiguration;
import com.core.decorators.Validatable;
import com.core.models.components.ComponentModel;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.commons.lang3.StringUtils;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.models.annotations.DefaultInjectionStrategy;
import org.apache.sling.models.annotations.Model;
import org.apache.sling.models.annotations.injectorspecific.ChildResource;
import org.apache.sling.models.annotations.injectorspecific.OSGiService;
import org.apache.sling.models.annotations.injectorspecific.ValueMapValue;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.annotation.Nonnull;
import javax.annotation.PostConstruct;
import java.util.List;
import static java.util.Collections.emptyList;

@Model(
    adaptables = SlingHttpServletRequest.class,
    defaultInjectionStrategy = DefaultInjectionStrategy.OPTIONAL)
public class LocationsModel extends ComponentModel implements Validatable {
  private static final Logger log = LoggerFactory.getLogger(LocationsModel.class);
  private static final String CSS_CLASS_NAME = "locations";

  @OSGiService
  private GoogleMapAPIConfiguration mapAPIConfiguration;

  @ValueMapValue
  private String title;

  @ValueMapValue
  private int zoomLevel;
  
  //@ChildResourceFromRequest
  @ChildResource // USING THIS AS ALTERNATIVE BUT NOT SURE IF IT WILL CHANGE THE FUNCTIONALITY
  private final List<LocationItem> locations = emptyList();

  private String locationsJson;
  private String key;

  @PostConstruct
  protected void init() {
    if (mapAPIConfiguration != null) {
      this.key = mapAPIConfiguration.getKey();
    }
/* I NEED TO COMMENT THIS CODE IN ORDER AVOID ERROR
    try {
      this.locationsJson = new ObjectMapper().writeValueAsString(this.locations);
    } catch (Exception ex) {
      log.error("Unable to generate locations to JSON string", ex);
    }
*/


  }

  @Nonnull
  @Override
  public String getCssClassName() {
    return CSS_CLASS_NAME;
  }

  @Override
  public boolean isValid() {
    return StringUtils.isNotEmpty(this.key) && !this.locations.isEmpty();
  }

  public String getTitle() {
    return this.title;
  }

  @Nonnull
  public List<LocationItem> getLocations() {
    return this.locations;
  }

  public String getLocationsJson() {
    return this.locationsJson;
  }

  public int getZoomLevel() {
    return this.zoomLevel;
  }

  public String getKey() {
    return this.key;
  }
}

can you tell me why @ChildResourceFromRequest is not working 

Thank you

[arunpatidar]

Hi,

Could you share the details about @ChildResourceFromRequest annotations?

I am not able to find at sling official documentation

https://sling.apache.org/documentation/bundles/models.html#injector-specific-annotations-1

[rahul234dabas]

upon clicking on @ChildResourceFromRequest i am getting : 

package com.adobe.acs.commons.models.injectors.annotation;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import org.apache.sling.models.annotations.Source;
import org.apache.sling.models.annotations.injectorspecific.InjectionStrategy;
import org.apache.sling.models.spi.injectorspecific.InjectAnnotation;

@Target({ElementType.METHOD, ElementType.FIELD, ElementType.PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
@InjectAnnotation
@Source("child-resources-from-request")
public @interface ChildResourceFromRequest {
    String name() default "";

    /** @deprecated */
    @Deprecated
    boolean optional() default false;

    InjectionStrategy injectionStrategy() default InjectionStrategy.DEFAULT;

    String via() default "";
}

[arunpatidar]

Ahh ok, this is from ACS common,

you can check the details at https://adobe-consulting-services.github.io/acs-aem-commons/features/sling-model-injectors/child-res...

I think you can continue using @ChildResource

[rahul234dabas]

will using @ChildResource instead of @ChildResourceFromRequest change any of my functionality?

[arunpatidar · Accepted solution]

There is no difference in functionality, it is just direct adaption of child resource when adaptable is slingRequest.

a key difference in that it uses a mock request object pointed to the resource path as the adaptable, allowing the sling model to reference the request and other sling bindings not otherwise accessible when adapting a resource directly.