annotations

问题 Generally I use Constants in all of annotation based places e.g. annotations, route and assert annotations , but in Assert\Expression it throws Variable "EntityInterface" is not valid around position 26. Is this a bug or is a special rare case ? <?php /** * @var string * * @ORM\Column(name="id_number", type="string", length=11, nullable=true) * @Assert\Expression( * "this.getNationality() == EntityInterface::COUNTRY_DEFAULT_VALUE and value != null", * message = "form.user.validation.id_number

问题 I hope someone can help me find an answer. I'm working with a legacy database and I can't change any of the preexisting tables, because other apps depend on them. I have three main existing tables: A,B,C . A has a column with reference to B(many to one relation). The problem is that it should have a relation to C not to B. So I have created a *-1 mapping BC. Tables: A,B,C,BC (all have ID field) A-B many to one B-C many to one through BC Needed:A-C without altering A,B or C I don't want to

问题 I hope someone can help me find an answer. I'm working with a legacy database and I can't change any of the preexisting tables, because other apps depend on them. I have three main existing tables: A,B,C . A has a column with reference to B(many to one relation). The problem is that it should have a relation to C not to B. So I have created a *-1 mapping BC. Tables: A,B,C,BC (all have ID field) A-B many to one B-C many to one through BC Needed:A-C without altering A,B or C I don't want to

问题 I am using jersey 1.9.1. I have rest method like following where Authorization header contained encoded credentials such as username and password and it is parsed in a method and mapped local values. @PUT @Path(SystemConstants.REST_MESSAGE_SENDSMS) @Consumes(MediaType.APPLICATION_JSON) @Produces({MediaType.APPLICATION_JSON}) public Response sendSms(@HeaderParam("Authorization") String authorization, String param) { String[] credentials = ImosUtils.getUserCredentials(authorization); String

问题 I have a method, in a class called "PlaceParser" that extends "ModelParser": protected Place parseModel(JSONObject element) ... A Place is a sub class of Model. Should the @Override annotation be added to the above code? As the method has a different return type, does this still count as overriding the base class method with the same name and arguments / does the return type alter the 'signature'? The "ModelParser" method looks like this "ModelT" also extends "Model": protected abstract

问题 My initial question was an exact duplicate of this one; that is, why is it that this interface has a runtime retention policy. But the accepted answer does not satisfy me at all, for two reasons: the fact that this interface is @Documented has (I believe) nothing to do with it (although why @Documented has a runtime retention policy is a mystery to me as well); even though many "would be" functional interfaces existed in Java prior to Java 8 ( Comparable as the answer mentions, but also

问题 I have a method that takes type parameters with an implicit view bounds on them. Can I use the @implicitNotFound annotation to give nicer compiler errors when the method is called with invalid data types? The documentation for the method is useless and even the source code doesn't help, and all the examples of use online are at the trait or class level. 回答1: No, you cannot directly do that. As you’ve noticed, @implicitNotFound annotates traits or classes. You could, however, make a special

问题 I have begin to study Spring MVC reading this tutorial: http://viralpatel.net/blogs/spring-3-mvc-create-hello-world-application-spring-3-mvc/ Ok, this is very clear for me. In this example I have the web.xml file to configure my web application: <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml

问题 I am rendering a PDF using Apache Fop . I am making XSLT templates which I used to convert xml to PDF. I want to put annotation in the output PDF using Apache Fop . I have been searching and it says iText has support for adding annotation to pdf. Is it possible to add annotation in Apache Fop? 回答1: iText DOES have support for adding annotations to PDF documents. We use that in our products. You can do the following: Use an existing PDF, for example one that has been created with Apache FOP.

问题 I'm using Spring annotations and I want to use lazy initialization. I'm running into a problem that when I want to import a bean from another class I am forced to use @Autowired which does not seem to use lazy init. Is there anyway to force this lazy init behaviour? In this example I do not want to see "Loading parent bean" ever being printed as I am only loading childBean which has no dependencies on lazyParent . @Configuration public class ConfigParent { @Bean @Lazy public Long lazyParent()