I have an Entity User that is assigned a system privilege in a function. I have a web page where you select a user from a drop down and submit the form to the server. On the server side I want to update only one field for that entity. My User Entity will have default values for all objects except the one field that gets set and its...
Hi there... I am using JPA and Hibernate in an application. (with PostgreSQL as DBMS) I execute a lot of select-statements to get items stored in the DB by their name. I use the following Code: //em is the javax.persistence.EntityManager Object. Query q = em.createQuery("Select i from Item i where i.name = :name"); q.set...
Hello, Is it possible to use CriteriaQuery with JPA 1.0. I guess JPA 2.0 not available with Java Se ( version -- Java(TM) SE Runtime Environment (build 1.6.0_16-b01)) . I tied to use, CriteriaBuilder cb = em.getCriteriaBuilder(); CriteriaQuery<Test> cq = cb.createQuery(Test.class); Root<Test> test= cq.from(Test.class); .... But cou...
The Spring configuration I am using contains the definition of a persistenceUnitPostProcessor within my entityManagerFactory bean. When I run a JUnit test (i.e. outside of the container) the post processor is being invoked, yet when it participates as part of a deployed web app (running in Glassfish v3) the post processor is not being ...
hi, how to limit the number of results from database when I don't care about the other? select e from Entity e /* just ten results, howto? */ ...
I'm pretty lost with mapping the following structure with JPA annotations. +===========+ +====================+ | Offer | | Text | +-----------+ 1 0..* +--------------------+ | id (pk) |-------------| textkey (pk) | | namekey | | languagecode (pk) | | ... | ...
is it possible to use PostgreSQL-like DISTINCT ON in EJB using named query? o.fromDate,o.empLeaveMasterId,o.employeeInfoId, o.leavePurposeId ,o.toDate,o.createdByUserId,o.createDate,o.lastModifiedUserId,o.lastModifiedDate,o.isSystemRecord The field describe above is my entity bean field and I want to get fromDate wise distinct record ...
I am getting "During synchronization a new object was found through a relationship that was not marked cascade PERSIST" when attempting to persist an object Word() that has a Many-To-Many field mapping to a table Topics. The relations bridge table is Topic_links. What complicates the problem is that I always use the Eclipse Workbench to...
Say for example I had to entities "Article" and "Tag" (like in a typical blog). Each article can have many tags, and each tag can be used by many articles, so it is a classical m:n relationship. I need to specify an owning side with JPA. But which side should be the owning side? An article doesn't depend on a certain tag and vice versa....
For a weekend project I was trying to run JPA 2 with Hibernate 3.5. Please note that I am not getting any compile errors or runtime exceptions (when I deploy the war on Tomcat). Below is my code - persistence.xml <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" x...
After creating EntityManagerFactory instance, I receive error message: ... Exception Description: Predeployment of PersistenceUnit [aPU] failed. Internal Exception: Exception [EclipseLink-7157] (Eclipse Persistence Services - 2.0.2.v20100323-r6872): org.eclipse.persistence.exceptions.ValidationException Exception Description: Entity cla...
I am learning spring samples. In the petclinic project, by default it uses jdbc. I change the following line to jpa, and can't run it anymore /WEB-INF/spring/applicationContext-jpa.xml Here is the error message: Caused by: java.lang.IllegalStateException: ClassLoader [org.apache.catalina.loader.WebappClassLoader] does NOT provide an ...
I have a OneToOne relationship like this :- Person Others ----------- ------------- | id (PK) | <----------------->| id(PK)(FK) | ----------- ------------- | name | |.... | | address | |.... | | .... | ...
Assuming the following class, how do you find a Person with a particular email address? public class Person implements Comparable<Person> { @Id @GeneratedValue(strategy = GenerationType.AUTO) @Column(name="id") private long id = 0; @OneToMany(cascade={CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REMOVE}, fet...
I would like to be able to swap my JPA implementation between EclipseLink & Hibernate with a simple property change. I can do this ok but what is causing me problems is the named query validation. Using EclipseLink I have to write fetch joins like so: SELECT id FROM IndexDefinition id JOIN FETCH id.index JOIN id.index i JOIN FETCH i....
I have a one-to-one relationship using PrimaryKeyJoinColumn annotated on the parent side. And now I want to save the child entity by itself. For example, I have Employee and EmpInfo as the child entity, I need to save EmpInfo (of course after setting the id property of the parent to it). However, when such an arrangement is used, I get ...
We have a JPA application (using hibernate) and we need to pass a call to a legacy reporting tool that needs a JDBC database connection as a parameter. Is there a simple way to get access to the JDBC connection hibernate has setup? ...
I am trying to build a simple application with JDeveloper 11g. I connect to a MSSQL Server 2008 database and get data from it. I am new at Enterprise Java Beans 3.0 so I don't know what code I should write for data update, delete or insert and where to write. I made an application(Fusion Web Application) but the changes I made on that a...
Hello guys I am having some problems with exact matches while doing a NamedQuery. I am currently using something like this: @NamedQuery(name = MyClass.GET_ENTRY_BY_NAME, query = "select e from Entry e where e.name =:"+ Entry.NAME ) ... Query query = em.createNamedQuery(MyClass.GET_ENTRY_BY_NAME); query.setParameter(Entry.NAME...
I have a requirement in which I need to capture data changes (not auditing) and life cycle states on inventory. Technology: Jave, Oracle, Hibernate + JPA For the data changes, we have been given a list of data elements that are to be monitored. If the element changes we are to notify a given 3rd party vendor. What I want to do is mak...