Examples of javax.ws.rs.core.GenericEntity

javax.ws.rs.core.GenericEntity
Represents a message entity of a generic type {@code T}.
Normally type erasure removes generic type information such that a {@link Response} instance that contains, e.g., an entity of type{@code List} appears to contain a raw {@code List} at runtime.When the generic type is required to select a suitable {@link javax.ws.rs.ext.MessageBodyWriter}, this class may be used to wrap the entity and capture its generic type.

There are two ways to create an instance:
1. Create a (typically anonymous) subclass of this class which enables retrieval of the type information at runtime despite type erasure. For example, the following code shows how to create a {@link Response} containing an entity of type {@code List
  } whosegeneric type will be available at runtime for selection of a suitable {@link javax.ws.rs.ext.MessageBodyWriter}:
```
List<String> list = new ArrayList<String>(); GenericEntity<List<String>> entity = new GenericEntity<List<String>>(list) {}; Response response = Response.ok(entity).build();
```
  where {@code list} is the instance of {@code List}that will form the response body and entity is an instance of an anonymous subclass of {@code GenericEntity}.
2. Create an instance directly by supplying the generic type information with the entity. For example the following code shows how to create a response containing the result of a method invoked via reflection:
```
Method method = ...; GenericEntity<Object> entity = new GenericEntity<Object>( method.invoke(...), method.getGenericReturnType()); Response response = Response.ok(entity).build();
```
@param < T> response entity instance type @author Paul Sandoz @author Marc Hadley @see GenericType @since 1.0

    
    public void setEntity(Object entity, Type entityType) {
        this.originalEntity = this.entity = entity;
        this.entityType = entityType;
        if (this.entity instanceof GenericEntity) {
            final GenericEntity ge = (GenericEntity)this.entity;
            this.entity = ge.getEntity();
            this.entityType = ge.getType();
        }
    }

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        }


        final GenericType responseGenericType = new GenericType(method.getGenericReturnType());
        if (entity != null) {
            if (entityType instanceof ParameterizedType) {
                entity = new GenericEntity(entity, entityType);
            }
            result = builder.method(httpMethod, Entity.entity(entity, contentType), responseGenericType);
        } else {
            result = builder.method(httpMethod, responseGenericType);
        }

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        GenericType gt = isList ? new GenericType<List<JAXBElement<String>>>() {
        } : new GenericType<JAXBElement<String>[]>() {
        };


        WebTarget target = target(isList ? "JAXBElementListResource" : "JAXBElementArrayResource");
        Object out = target.request(mt).post(Entity.entity(new GenericEntity(in, gt.getType()), mt), gt);


        List<JAXBElement<String>> inList = isList ? ((List<JAXBElement<String>>) in) : Arrays.asList((JAXBElement<String>[]) in);
        List<JAXBElement<String>> outList = isList ? ((List<JAXBElement<String>>) out) : Arrays.asList((JAXBElement<String>[]) out);
        assertEquals("Lengths differ", inList.size(), outList.size());
        for (int i = 0; i < inList.size(); i++) {

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        GenericType gt = isList ? new GenericType<List<JAXBElement<String>>>() {
        } : new GenericType<JAXBElement<String>[]>() {
        };


        WebTarget target = target(isList ? "JAXBElementListResource" : "JAXBElementArrayResource");
        Object out = target.request(mt).post(Entity.entity(new GenericEntity(in, gt.getType()), mt), gt);


        List<JAXBElement<String>> inList = isList ? ((List<JAXBElement<String>>) in) : Arrays.asList((JAXBElement<String>[]) in);
        List<JAXBElement<String>> outList = isList ? ((List<JAXBElement<String>>) out) : Arrays.asList((JAXBElement<String>[]) out);
        assertEquals("Lengths differ", inList.size(), outList.size());
        for (int i = 0; i < inList.size(); i++) {

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        final GenericType gt = isList ? new GenericType<List<JAXBElement<String>>>() {
        } : new GenericType<JAXBElement<String>[]>() {
        };


        final WebTarget target = target(isList ? "JAXBElementListResource" : "JAXBElementArrayResource");
        final Object out = target.request(mt).post(Entity.entity(new GenericEntity(in, gt.getType()), mt), gt);


        final List<JAXBElement<String>> inList = isList ? ((List<JAXBElement<String>>) in) : Arrays.asList((JAXBElement<String>[]) in);
        final List<JAXBElement<String>> outList = isList ? ((List<JAXBElement<String>>) out) : Arrays.asList((JAXBElement<String>[]) out);
        assertEquals("Lengths differ", inList.size(), outList.size());
        for (int i = 0; i < inList.size(); i++) {

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      status = response.getStatus();
      headers = response.getMetadata();
      entity = response.getEntity();
      if (entity instanceof GenericEntity)
      {
         GenericEntity ge = (GenericEntity)entity;
         entity = ge.getEntity();
         entityType = ge.getType();
      }
      else
      {
         if (entity != null)
            entityType = entity.getClass();

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        Class<?> entityType = jsonEntity.getClass();


        final boolean genericEntityUsed = jsonEntity instanceof GenericEntity;


        if (genericEntityUsed) {
            GenericEntity ge = (GenericEntity)jsonEntity;
            jsonEntity = ge.getEntity();
            entityGenericType = ge.getType();
            entityType = ge.getRawType();
        }


        final boolean isJavaScript = isJavascript(mediaType);
        final MediaType workerMediaType = isJavaScript ? MediaType.APPLICATION_JSON_TYPE : mediaType;

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    }
    
    public void setEntity(Object entity) {
        this.entity = entity;        
        if (this.entity instanceof GenericEntity) {
            final GenericEntity ge = (GenericEntity)this.entity;
            this.entityType = ge.getType();                
            this.entity = ge.getEntity();            
        } else {
            if (entity != null)
                this.entityType = this.entity.getClass();
        }

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    private MultivaluedMap<String, Object> setResponseOptimal(ResponseImpl r) {
        this.entityType = r.getEntityType();
        this.entity = r.getEntity();        
        if (entity instanceof GenericEntity) {
            final GenericEntity ge = (GenericEntity)this.entity;
            this.entityType = ge.getType();                
            this.entity = ge.getEntity();
        }
        
        return r.getMetadataOptimal(request);
    }

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        if (entity == null)
            return;


        Type entityType = null;
        if (entity instanceof GenericEntity) {
            final GenericEntity ge = (GenericEntity)entity;
            entityType = ge.getType();
            entity = ge.getEntity();
        } else {
            entityType = entity.getClass();
        }
        final Class entityClass = entity.getClass();

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