seam

问题 I am using SEAM 2/Hibernate along with PostgreSQL 9 database. I have the following table Active Band =========== active_band_id serial active_band_user text active_band_date timestamp active_band_process integer I would like to add a constraint that ensures each new entry has a unique combination of active_band_user and active_band_date. There could potentially be many attempted inserts per second so I need this to be as efficient as possible, is there a SEAM / hibernate annotation I can use

问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 7 years ago . I'm debating whether to use Seam, Wicket, JSF or GWT as the foundation for my presentation layer in a Java project. I narrowed my

问题 I have written an application using Seam 2.2.1 & MySQL which is working. I am now trying to connect the application to Informix and when I execute a query from hibernate ( select user from User user ) I am getting the following exceptions: org.hibernate.exception.genericjdbcexception could not execute query when i execute a query as select user.id,user.name from User user it's executed successefuly. The Generated sql is select first 2 user0_.USER_ID as USER1_120_, user0_.dateOfBirth as

问题 I have a big problem with Hibernate (use with seam) on weblogic 10.3. When I publish my application, I get this error: java.lang.NoSuchMethodException: org.hibernate.validator.ClassValidator.<init>(java.lang.Class, java.util.ResourceBundle, org.hibernate.validator.MessageInterpolator, java.util.Map, org.hibernate.annotations.common.reflection.ReflectionManager) I read on the web that this error can come from compatibily between hibernate jar. But, I read the matrix and I have the good jar

问题 Suppose i have a month, day and year select. One select for each one. And now i need to bind them to a single backing bean property - java.util.Date. How do i get my goal ? 回答1: Three ways: Back or intermediate it by java.util.Calendar with three getters and three setters. Make use of a Converter , this is however going to be a bit hacky. Make use of a 3rd party component like rich:calendar. Edit: as per the comments, here's how option 2 would look like. page.jsp : <h:form> <h:selectOneMenu

问题 One of the most common approaches to change locale in JSF+Seam - with <h:selectOneMenu> : <h:form action="#{localeSelector.select}" rendered="false"> <h:selectOneMenu value="#{localeSelector.language}" onchange="submit()"> <f:selectItem itemLabel="English" itemValue="en" /> <f:selectItem itemLabel="Francais" itemValue="fr" /> </h:selectOneMenu> </h:form> I want to implement locale changes with buttons. So, the question is - how to pass the parameter (en, fr, etc.) to update the bean with <h

问题 I have a table in Oracle where column SC_CUR_CODE is CHAR(3) When I do: Query q2 = em.createNativeQuery("select sc_cur_code, sc_amount from sector_costs"); q2.setMaxResults(10); List<Object[]> rs2 = q2.getResultList(); for (Object[] o : rs2) { System.out.println(">>> cur=" + o[0]); } I see cur=E and cur=U instead of cur=EUR and cur=USD o[0] is a java.lang.Character How can I get the full value EUR and USD ? 回答1: It looks like Hibernate reads value of type CHAR(n) as Character . Try to cast it

问题 Is there a way to have Expression Language (EL) expressions included JavaScript files be evaluated by JSF? I was hoping that Seam might have a way around this, but no luck so far. All I want is to be able to use localized messages in my JavaScript functions which are shared across pages. 回答1: Five ways: Declare it as global variable in the parent JSF page. <script type="text/javascript" src="script.js"></script> <script type="text/javascript"> var messages = []; <ui:repeat value="#{bean

问题 Is there a way to have Expression Language (EL) expressions included JavaScript files be evaluated by JSF? I was hoping that Seam might have a way around this, but no luck so far. All I want is to be able to use localized messages in my JavaScript functions which are shared across pages. 回答1: Five ways: Declare it as global variable in the parent JSF page. <script type="text/javascript" src="script.js"></script> <script type="text/javascript"> var messages = []; <ui:repeat value="#{bean

问题 I am using jboss-seam-2.2.0.GA, authenticator class to authenticate the login process. When I enter the username and password and submit the page, I am getting following error message in my logs: application E javax.el.PropertyNotFoundException: /login.xhtml @27,76 action="#{authenticator.login()}": Target Unreachable, identifier 'authenticator' resolved to null javax.faces.el.EvaluationException: javax.el.PropertyNotFoundException: /login.xhtml @27,76 action="#{authenticator.login()}":