What is the function of Sling model?

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Internal object:

Import org.apache.sling.api.resource.Resource;import org.apache.sling.api.resource.ResourceResolver;import org.apache.sling.models.annotations.Model;import org.apache.sling.models.annotations.injectorspecific.SlingObject;@Model (adaptables = {Resource.class}) public class AbstractModelResource {@ SlingObject ResourceResolver resolver; @ SlingObject Resource resource;}

Real fields:

@ Model (adaptables=Resource.class,defaultInjectionStrategy = DefaultInjectionStrategy.OPTIONAL) public class JobDetailModel extends AbstractModel {@ OSGiService JobTriggerService jobTriggerService; private JobEntity job; private String appUrl; private String postingDate; private String postingDateFormat; @ Inject @ Optional @ Named ("subTitle") @ Default (values= "") private String subTitle @ Inject @ Optional @ Named ("qualifications") @ Default (values= "") private String qualifications; @ Inject @ Optional @ Named ("jobID") @ Default (values= ") private String jobID; @ Inject @ Optional @ Named (" jobFunction ") @ Default (values=") private String jobFunction @ Inject @ Optional @ Named ("postingDateLabel") @ Default (values= "") private String postingDateLabel; @ Inject @ Optional @ Named ("applyBtn") @ Default (values= ") private String applyBtn; @ Inject @ Optional @ Named (" scheduleLabel ") @ Default (values=") private String scheduleLabel @ Inject @ Optional @ Named ("jobDetailsText") @ Default (values= "") private String jobDetailsText; @ Inject @ Optional @ Named ("relJobsText") @ Default (values= ") private String relJobsText; @ Inject @ Optional @ Named (" Job ") private JobModel jobModel; @ PostConstruct protected void init () {}}

Job Model:

Import org.apache.sling.api.resource.Resource;import org.apache.sling.models.annotations.Default;import org.apache.sling.models.annotations.Model;import org.apache.sling.models.annotations.Optional;import javax.inject.Inject;import javax.inject.Named;import java.util.List;@Model (adaptables = Resource.class) public class JobModel {@ Inject @ Optional@Named ("BrandName") @ Default (values= "") private String BrandName @ Inject @ Optional @ Named ("PrimaryLocation") PrimaryLocation primaryLocation; @ Inject @ Optional @ Named ("Postings") List postings; @ Inject @ Optional @ Named ("JobField") JobField JobField @ Model (adaptables = Resource.class) public static class PrimaryLocation {@ Inject @ Optional @ Named ("Country") @ Default (values= ") String Country; @ Inject @ Optional @ Named (" State ") @ Default (values=") String State;}}

For request:

@ Model (

Adaptables = {Resource.class, SlingHttpServletRequest.class}

DefaultInjectionStrategy = DefaultInjectionStrategy.OPTIONAL)

Public abstract class AbstractModel extends AbstractModelResource {

@ SlingObject

ResourceResolver resolver

@ Inject

@ Via ("resource")

Resource resource

@ Inject

@ Via ("request")

SlingHttpServletRequest request

@ OSGiService

}

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