eclipselink

Apache TomEE结合了众多开源Java EE的实现，诸如GlassFish、JBoss和Apache Geronimo，同时也是仅有的6个通过认证的JavaEE引擎之一。 一、准备工作 下载TomEE， http://mirrors.hust.edu.cn/apache/tomee/tomee-1.7.1/apache-tomee-1.7.1-plume.zip ，该版本内核为Tomcat 7，解压即可。 下载Eclipse for JavaEE， 必须是Kepler或以上版本 ，否则不支持Tomcat 7 jdk1.7或以上版本 + Maven 3.x 二、环境搭建步骤及关键代码 1、Eclipse+TomEE 1) 启动Eclipse，菜单Window-Preference-Server-Runtime Environment-Add，增加TomEE（与增加tomcat方法相同）； 2) Window-Show View-Servers，增加Server，选择上一步的TomEE； 3) 双击上一步中的Server，勾选如下内容并保存： 增加后需要手动将 tomee.xml和system.properties 导入（import - File System）到localhost-config文件夹下。 4) 创建TomEE数据源：在Servers项目中的“TomEE

I've created my model classes with JPA 2.0 annotations. At runtime, I will use EclipseLink 2.2.0, but I've been careful to use only pure JPA annotations in my model classes. Now, how do I generate the schema DDL for the database ? I want to use the EclipseLink API to generate the DDL from the classes, but not at runtime. Instead, I want a Java class to run on the command line and which outputs the DDL. What this guy did for Hibernate , I want for EclipseLink. I'd also settle for an Ant task or some plugin for Maven. Also, I chose to name my file jpa.xml instead of persistence.xml ; bonus

Follow my code: Company cc = em.find(Company.class, clientUser.getCompany().getId()); System.out.println(cc.getCompany_code()); HashMap findProperties = new HashMap(); findProperties.put(QueryHints.CACHE_RETRIEVE_MODE, CacheRetrieveMode.BYPASS); Company oo = em.find(Company.class, clientUser.getCompany().getId(), findProperties); System.out.println(oo.getCompany_code()); Just like the example "Used as EntityManager properties". here But, there are nothing different between the two outputs. What are you expecting to be different and why? Note that CACHE_RETRIEVE_MODE only affects the shared

I have basically two Entities Entity1 and Entity2 . Entity1 contains this bit of Code: @OneToMany(cascade=CascadeType.PERSIST) @OrderColumn List<Entity2> e = new LinkedList<Entity2>(); and Entity2 contains some stuff, but nothing relevant. I want to add some instances to the list e , and most importantly i want to add some duplicates (the same reference) twice or more to the list. Still i want JPA to persist both and i want JPA to persist the Order of the list. So far this works, if i add only unique items. If i add a duplicate, JPA actually wants to persist the correct data (ID od Entity1, ID

I am totally new to JPA and JSF and hope you can help me with my questions. My application is built using JSF 2.0 Framework, using JPA 2.0/EclipseLink running on Glassfish 3+, MySQL. I set one persistence unit called "loginPU" using data source: "jdbc/loginDataSource" "jdbc/loginDataSource" connects to MySQL using "login1" (defined in mysql . user table) and only has access to customer . user and customer . roles tables, with only select privileges. I created 2 other data sources "jdbc/admin" and "jdbc/staff" in Glassfish JDBC Resources and both with different privileges The login

I am new to JPA, and I have a question on how to use JPA to store XML type to PostgreSQL. I am simply expanding an existing POJO to include persisting an additional XML field to a column. The POJO looks something like this (I purposely left out a bunch of other columns to make this shorter, before adding this additional XML type, this POJO can persist into PostgreSQL just fine via JPA). public class Finding implements Serializable { private static final long serialVersionUID = -5814053129578212916L; ... @Column(name = "PLUGIN_TEXT_XML") private String pluginTextXML; public void setPluginText

I have been fumbling with the following EclipseLink Joda-Time converter for a long time to store date-time in UTC into MySQL database with no success at all. import java.util.Date; import org.eclipse.persistence.mappings.DatabaseMapping; import org.eclipse.persistence.mappings.converters.Converter; import org.eclipse.persistence.sessions.Session; import org.joda.time.DateTime; public final class JodaDateTimeConverter implements Converter { private static final long serialVersionUID = 1L; @Override public Object convertObjectValueToDataValue(Object objectValue, Session session) { //Code to