annotations

问题 Is there is a way to generate full XML configuration file based on Spring 3 annotations scattered all over the classes? Ideally, I'm looking for a tool that can "parse" a Spring 3 project and output XML configuration, something like xdoclet was doing (but off course from Spring annotations) Is there a tool like this, or a way I could write my own if none exists? 回答1: You can always write your own. I'm not aware of one. Funny, because annotations were added because some people complained about

问题 In .NET, one can specify a "mustoverride" attribute to a method in a particular superclass to ensure that subclasses override that particular method. I was wondering whether anybody has a custom java annotation that could achieve the same effect. Essentially what i want is to push for subclasses to override a method in a superclass that itself has some logic that must be run-through. I dont want to use abstract methods or interfaces, because i want some common functionality to be run in the

问题 I´ve got a bean containing some fields, and two of them are not intended to be mapped by hibernate (errorStatus and operationResultMessage). How do I tell Hibernate (via annotations) that I don´t want to map those fields? *The mapped table in the beans does not have the fields: errorStatus and operationResultMessage Thanks in advance. Code right bellow: ** Gettters and Setters ommited! @Entity @Table(name = "users") public class AccountBean implements Serializable { private static final long

问题 I am trying out Java 7 for one project and getting warnings from annotation processors (Bindgen and Hibernate JPA modelgen) of this sort: warning: Supported source version 'RELEASE_6' from annotation processor 'org.hibernate.jpamodelgen.JPAMetaModelEntityProcessor' less than -source '1.7' This is caused by the @SupportedSourceVersion(SourceVersion.RELEASE_6) annotation on the annotation processor classes. Since they are compiled with Java 6, the highest value of SourceVersion available to

问题 I have a doubt regarding the purpose of @PreserveOnRefresh annotation. What is the purpose of this particular annotation and what are the scenarios in which it has to be used? What are the effects of using/not using this annotation? Thanks, Daniccan VP 回答1: The other answer is not quite correct as noted in the comments (summarized here). Vaadin 7 This Answer applies to Vaadin 7. Vaadin 6 is different in some ways. Session Is On-going As soon as a user’s browser reaches your Vaadin app, a

问题 In the description of Initializable interface it is said: NOTE This interface has been superseded by automatic injection of location and resources properties into the controller. FXMLLoader will now automatically call any suitably annotated no-arg initialize() method defined by the controller. It is recommended that the injection approach be used whenever possible. The question is: how to "suitable annotate" methods? I find only one annotation -- @FXML . Are there any others? 回答1: The answer

问题 One usage of these two interface, is to write annotation processor. As a java beginner, I find the level of indirection that is added by these two packages: javax.lang.model.element & javax.lang.model.type to provide metadata about java interface and java class confusing. ......... java doc comments say, TypeElement represents a class or interface program element. Provides access to information about the type and its members. Note that an enum type is a kind of class and an annotation type is

问题 I've created an Annotation /** * Highlights this method is declared in XML */ public @interface FromXML { } I'm using this on methods that look like this: @FromXML public void onSomethingClick(View v){ } The v variable is needed by the Android reflection system to call this method. However the input var v is unused, so my IDE warns me of this. I like this warning and want it on for the rest of my code . To hide the warning I could do @SuppressWarnings("unused") @FromXML public void

问题 I've created an Annotation /** * Highlights this method is declared in XML */ public @interface FromXML { } I'm using this on methods that look like this: @FromXML public void onSomethingClick(View v){ } The v variable is needed by the Android reflection system to call this method. However the input var v is unused, so my IDE warns me of this. I like this warning and want it on for the rest of my code . To hide the warning I could do @SuppressWarnings("unused") @FromXML public void

问题 Being new to spring annotations, I need a clarification for the below code. @PostFilter("hasPermission(filterObject, 'READ') or hasRole('ROLE_ADMIN')") public List<User> getUsers(String orderByInsertionDate, Integer numberDaysToLookBack) throws AppException ; So this means that the list of users returned by getUsers will only contain those elements which have full "READ" access to the calling object or the calling object has role as "ROLE_ADMIN" . Thanks. 回答1: @PreFilter and @PostFilter are