Spring Data MongoDB - Spring Web Services - Parent - SpringSource
Spring Data MongoDB - Spring Web Services - Parent - SpringSource Spring Data MongoDB - Spring Web Services - Parent - SpringSource
please define productname in your docbook file!Example 4.24 Declaring a Jackson repository populatorThis declaration causes the data.json file being read, deserialized by a Jackson ObjectMapper.The type to which the JSON object will be unmarshalled to will be determined by inspecting the _classattribute of the JSON document. The infrastructure will eventually select the appropriate repository tohandle the object just deserialized.To rather use XML to define the data the repositories shall be populated with, you can use theunmarshaller-populator element. You configure it to use one of the XML marshaller options SpringOXM provides you with. See the Spring reference documentation for details.Example 4.25 Declaring an unmarshalling repository populator (using JAXB)Legacy web supportDomain class web binding for Spring MVCGiven you are developing a Spring MVC web application you typically have to resolve domain classids from URLs. By default your task is to transform that request parameter or URL part into the domainclass to hand it to layers below then or execute business logic on the entities directly. This would looksomething like this:1.4.0.BUILD-SNAPSHOTSpring Data MongoDB -Reference Documentation 19
please define productname in your docbook file!@Controller@RequestMapping("/users")public class UserController {private final UserRepository userRepository;@Autowiredpublic UserController(UserRepository userRepository) {Assert.notNull(repository, "Repository must not be null!");userRepository = userRepository;}@RequestMapping("/{id}")public String showUserForm(@PathVariable("id") Long id, Model model) {// Do null check for idUser user = userRepository.findOne(id);// Do null check for user}}model.addAttribute("user", user);return "user";First you declare a repository dependency for each controller to look up the entity managed bythe controller or repository respectively. Looking up the entity is boilerplate as well, as it's alwaysa findOne(…) call. Fortunately Spring provides means to register custom components that allowconversion between a String value to an arbitrary type.PropertyEditorsFor Spring versions before 3.0 simple Java PropertyEditors had to be used. To integrate withthat, Spring Data offers a DomainClassPropertyEditorRegistrar, which looks up all Spring Datarepositories registered in the ApplicationContext and registers a custom PropertyEditor forthe managed domain class.If you have configured Spring MVC as in the preceding example, you can configure your controller asfollows, which reduces a lot of the clutter and boilerplate.1.4.0.BUILD-SNAPSHOTSpring Data MongoDB -Reference Documentation 20
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please define productname in your docbook file!Example 4.24 Declaring a Jackson repository populatorThis declaration causes the data.json file being read, deserialized by a Jackson ObjectMapper.The type to which the JSON object will be unmarshalled to will be determined by inspecting the _classattribute of the JSON document. The infrastructure will eventually select the appropriate repository tohandle the object just deserialized.To rather use XML to define the data the repositories shall be populated with, you can use theunmarshaller-populator element. You configure it to use one of the XML marshaller options <strong>Spring</strong>OXM provides you with. See the <strong>Spring</strong> reference documentation for details.Example 4.25 Declaring an unmarshalling repository populator (using JAXB)Legacy web supportDomain class web binding for <strong>Spring</strong> MVCGiven you are developing a <strong>Spring</strong> MVC web application you typically have to resolve domain classids from URLs. By default your task is to transform that request parameter or URL part into the domainclass to hand it to layers below then or execute business logic on the entities directly. This would looksomething like this:1.4.0.BUILD-SNAPSHOT<strong>Spring</strong> <strong>Data</strong> <strong>MongoDB</strong> -Reference Documentation 19
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