Example usage for org.springframework.data.mapping PersistentEntity getIdentifierAccessor

Introduction

In this page you can find the example usage for org.springframework.data.mapping PersistentEntity getIdentifierAccessor.

Prototype

IdentifierAccessor getIdentifierAccessor(Object bean);

Source Link

Document

Returns the IdentifierAccessor for the given bean.

Usage

From source file:org.springframework.data.rest.webmvc.config.PersistentEntityResourceHandlerMethodArgumentResolver.java

@Override
@SuppressWarnings({ "unchecked", "rawtypes" })
public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer,
        NativeWebRequest webRequest, WebDataBinderFactory binderFactory) throws Exception {

    RootResourceInformation resourceInformation = resourceInformationResolver.resolveArgument(parameter,
            mavContainer, webRequest, binderFactory);

    HttpServletRequest nativeRequest = webRequest.getNativeRequest(HttpServletRequest.class);
    ServletServerHttpRequest request = new ServletServerHttpRequest(nativeRequest);
    IncomingRequest incoming = new IncomingRequest(request);

    Class<?> domainType = resourceInformation.getDomainType();
    MediaType contentType = request.getHeaders().getContentType();

    for (HttpMessageConverter converter : messageConverters) {

        if (!converter.canRead(PersistentEntityResource.class, contentType)) {
            continue;
        }/*from  w  w  w  .  jav  a2s .c  o  m*/

        Serializable id = idResolver.resolveArgument(parameter, mavContainer, webRequest, binderFactory);
        Object objectToUpdate = getObjectToUpdate(id, resourceInformation);

        boolean forUpdate = false;
        Object entityIdentifier = null;
        PersistentEntity<?, ?> entity = resourceInformation.getPersistentEntity();

        if (objectToUpdate != null) {
            forUpdate = true;
            entityIdentifier = entity.getIdentifierAccessor(objectToUpdate).getIdentifier();
        }

        Object obj = read(resourceInformation, incoming, converter, objectToUpdate);

        if (obj == null) {
            throw new HttpMessageNotReadableException(String.format(ERROR_MESSAGE, domainType));
        }

        if (entityIdentifier != null) {
            entity.getPropertyAccessor(obj).setProperty(entity.getIdProperty(), entityIdentifier);
        }

        Builder build = PersistentEntityResource.build(obj, entity);
        return forUpdate ? build.build() : build.forCreation();
    }

    throw new HttpMessageNotReadableException(String.format(NO_CONVERTER_FOUND, domainType, contentType));
}

---