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Forum:
Object Relational Mapping
How do I display the first item from a Hibernate set in JSTL?
Dave Alvarado
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Posts: 436
posted 10 years ago
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Hi,
I'm using Spring 3.1.1.RELEASE, Hibernate 4.1.0.Final, and
JBoss
7.1.3 AS. I have a Hibernate entity with this field …
@Entity ... public class User implements Comparable<User>, Serializable { … @OneToMany(fetch=FetchType.EAGER, cascade=CascadeType.ALL) @JoinTable(name = "user_address", joinColumns = @JoinColumn(name = "user_id"), inverseJoinColumns = @JoinColumn(name = "address_id")) private Set<Address> addresses;
I would like to reference the first address in the field and so through JSTL I tried doing this:
<div>Email: ${user.addresses[0].email}</div>
However I get the exception …
javax.el.PropertyNotFoundException: The class 'org.hibernate.collection.internal.PersistentSet' does not have the property '0'. javax.el.BeanELResolver.getBeanProperty(BeanELResolver.java:661) javax.el.BeanELResolver.getValue(BeanELResolver.java:290) javax.el.CompositeELResolver.getValue(CompositeELResolver.java:175) org.apache.el.parser.AstValue.getValue(AstValue.java:169) org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:189) org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:935) org.apache.jsp.WEB_002dINF.views.teacher.profile_jsp._jspService(profile_jsp.java:93) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:847) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:326) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:253) javax.servlet.http.HttpServlet.service(HttpServlet.java:847) org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238) org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:262) org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1180) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:950) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778) javax.servlet.http.HttpServlet.service(HttpServlet.java:734) javax.servlet.http.HttpServlet.service(HttpServlet.java:847) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:322) org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:116) org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:182) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:184) org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:155) org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
Is it possible to access the first address object? Thanks, - Dave
I hired a bunch of ninjas. The fridge is empty, but I can't find them to tell them the mission.
a bit of art, as a gift, the permaculture playing cards
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