annotations

问题 I am having the following code in a Spring-MVC command bean: @AssertTrue public boolean isConditionTrue() { return false; } private boolean conditionTrue; My JSP contains the following: <form:errors path="conditionTrue" cssClass="error" /> I would expect to see some error message in the produced HTML... however I see no error message. What do I miss? Thanks!!! 来源： https://stackoverflow.com/questions/7155767/asserttrue-of-javax-validation-isnt-it-supposed-to-create-an-error-message

问题 I have a helper method, hasContent(String) , which returns true iff its argument is both non-null and contains at least one non-whitespace character. I have just enabled null analysis in Eclipse and I have found that when I use this method to execute a block of code which is conditional on the result of my helper function indicating that the string has content (and therefore cannot be null), that nonetheless Eclipse complains that my String might still be null. The helper function public

问题 I'm attempting to use Doctrine ORM for the first time, and I'm following the configuration found here. Following these steps directly results in the following error: Warning: class_parents() [function.class-parents]: Class MyProject\Model\User does not exist and could not be loaded in /opt/local/lib/php/Doctrine/ORM/Mapping/ClassMetadataFactory.php on line 222 Warning: array_reverse() expects parameter 1 to be array, boolean given in /opt/local/lib/php/Doctrine/ORM/Mapping

问题 Folks! If I define an Entity Class and annotate it with @MappedSuperclass and an @EntityListener , does the listener also get called for lifecycle events within a child class? Example: @MappedSuperclass @EntityListeners(class=LastUpdateListener.class) public abstract class Animal { @Id private Integer id; private String name; private Calendar dateOfBirth; @Transient private int age; private Date lastUpdate; //getters and setters /** * Set my transient property at load time based on a

问题 I know it's a possible duplicate and I found several threads like How can I find all beans with the custom annotation @Foo? or Custom annotation is not working on spring Beans but that's not really what I do or want to do. I want an easy validator for the length of attributes of a class. Dont tell me about @Length or @Size . They're not helpful here. I tried several solutions and none of them did work. CustomAnnotation: @Target({ ElementType.METHOD, ElementType.FIELD, ElementType.TYPE })

问题 I have searched but i didn't found any solution to my problem. I want to change already added pin. And here is my code. I'm getting "Code Here" in console. I have in .h - (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)annotationView; myViewController.m - (void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)annotationView { userPins *myAnnot = (userPins *)annotationView.annotation; [myAnnot setTitle:@"o21"]; NSLog(@"Code here!"); } -

问题 I have minimums and maximums in the output now (Fig.1) but I would like to get labels (Fig. 2) for sorted maximums (tallest get 1, ...) and similarly for minimums (lowest gets 1). I can do the output of Fig. 1 by the following but I cannot integrate those annotations to the function close all; clear all; clc; % https://se.mathworks.com/help/signal/ref/findpeaks.html % http://stackoverflow.com/a/26837689/54964 x = linspace(0,1,1000); Pos = [1 2 3 5 7 8]/10; Hgt = [4 4 2 2 2 3]; Wdt = [3 8 4 3

问题 I'm currently taking a look to the new Eclipse RCP framework and have a questions about handlers. In RCP 3.x a handler class needed to implement an interface, so the methods where given. In RCP 4 the handler class doesn't need to implement an interface. Instead you annotate the methods. E.g. if you have an ExitHandler as in Vogellas Tutorial you have an @Execute annotation. As you can see, there's an IWorkbench parameter passed. package com.example.e4.rcp.todo.handler; import org.eclipse.e4

问题 I've never seen an autowired collection: @Service public class SomeFactory { @Autowired private List<Foo> foos; @PostConstruct public void init() { for(Foo foo: foos) { //do something } } } In init() method, I can see foos has several entries already. I guess Spring knows who's supposed to be the entry of foos. But, how? What should I do if I want to add a Foo object into foos? Need to configure in a property file, or any other idea? 回答1: Spring's BeanFactory is basically a registry of beans.

问题 I want to implement an intialization mechanism that is annotation-based in Java. Specifically, I have an annotation I've defined: @Retention(RetentionPolicy.RUNTIME) @Target(ElementType.METHOD) public @interface Initialization { /** * If the eager initialization flag is set to <code>true</code> then the * initialized class will be initialized the first time it is created. * Otherwise, it will be initialized the first time it is used. * * @return <code>true</code> if the initialization method