I have a strange use case of Hibernate where in a call farther up a large stack needs an unmodified copy of an object that is part of a hibernate transaction. however, every time I ask Hibernate for a copy of the object, it's returning the version that's already been modified / is part of the transaction. Is there a way for me to force...
Hi, I want to duplicate a collection of entities in my database. I retreive the collection with: CategoryHistory chNew = new CategoryHistory(); CategoryHistory chLast = (CategoryHistory)em.createQuery("SELECT ch from CategoryHistory ch WHERE ch.date = MAX(date)").getSingleResult; List<Category> categories = chLast.getCategories(); chN...
Please tell me what is the difference between component mapping - custom value type and when to use it? Thank you. ...
Hello friends, I have 2 tables as given below. feedback_answer question_id number(primary key) answer_id number (primary key) answer_en varchar2(255) answer_it varchar2(255) user_feedback verification_id number(primary key) question_id number(foreign key - feedback_answer) answer_id number(foreign key - feedback_answer) ...
Hi all, I've got a pretty special setup: I create all the classes in Java, connect them in my application (several ManyToOne-relationships). Then, I'd like to iterate over my objects and save them into the database. Sometimes, an object is already in the database, then it should not be persisted again. I implemented the hashCode() and...
Hello all, I've been recently working on a JBoss Seam project (v2.1.1) where I want to autheticate against LDAP/AD and store premissions in a custom DB schema. The documentation states that this is possible and I saw a text-book example that doesn't work for me since the DB schema is managed by Hibernate. Has anyone out there done some...
I tried to execute a delete query as following in eclipse's HQL tool delete from Address address where address.id = 6 but i got the org.hibernate.hql.QueryExecutionRequestException: Not supported for DML operations Please tell me that i've done wrong. Thank you. ...
Lets say we have this JPA-annotated class, with a property of type List. This code is currently working fine. @Entity public class Family { ... @CollectionOfElements(targetElement=java.lang.String.class) @JoinTable(name = "elements_family", joinColumns = @JoinColumn(name = "idFamily") ) @Column(name = "elemen...
I am using Hibernate annotations and entity manager (JPA) with HSQLDB. So I have an entity with an enum field: @Enumerated(EnumType.STRING) @Column(name = "access_level") public AccessLevel getAccessLevel() { return accessLevel; } Where AccessLevel is an enum. I can persist this, detach, and then query and everything is as it sho...
I know Hibernate is an ORM, I'm not familiar with RDLC, is it an ORM as well? If they are both ORMs wouldn't it make sense for an application team to choose to use one rather than the other during development (as opposed to using both)? ...
Following error occurs while updating a particular data in my web application.I am using HibernateTransactionManager to manage all transactions in the application. Error:- Pre-bound JDBC Connection found! HibernateTransactionManager does not support running within DataSourceTransactionManager if told to manage the DataSource...
Does running an EJBQL UPDATE statement defeat the performance benefits of container managed persistance when compared to modifing the accessors on a managed entity? I'm interested in this specifically for a database load / performance perspective. For example, if I have an entity called MyEntity and I want to update myField1 and myFiel...
Hi all, I have been recently running into an issue in which my web application will not start properly and the stack trace doesn't indicate exactly what happened. I have been able to isolate it to an event listener that I wrote. Whenever I attempt to activate it, I get a very generic exception: org.jboss.seam.InstantiationException: ...
For our new product re-engineering, we are in the process of selecting the best framework from Java. As the consideration is to go for database agnostic approach for model, we are working on options between Struts + Spring with iBATIS or Hibernate. Please advice which is best as both offer persistence. ...
Hi, first of all, i apologize for such a question. I'm trying to find a solution for an architectural error (i'm not the architect :P ) Is there the possibility to have two mappings for the same table in Hibernate3? The first one would have some lazy attributes set to true. The second mapping would ha some lazy attributes set to false;...
I have classes that look like this public class Agreement { public virtual string ArrgKey { get; set; } public virtual string SubjectCode { get; set; } // mapped as a HasMany to AgreementStateCountyRelation public virtual IList<AgreementStateCountyRelation> StateCounties { get; set; } } public class AgreementStateCount...
if you needed to build a highly scalable web application using java, what framework would you use and why? I'm just reading thinking-in-java, head first servlets and manning's spring framework boo, but really I want to focus on highly scalable architectures etc. would you use tomcat, hibernate, ehcache? (just assume you have to design...
How do you track the number of times a particular entity (say a user profile much similar to stackoverflow.com) is viewed by other users? Would it make sense to update this information when an entity is viewed using a lifecycle event like PostLoad. Where would you store the number of times the entity has been viewed, would it be in the ...
can we use Session class in Netbeans IDE 6.7.do we have to include any package for it.also if anybody can provide a sample example related to this question. ...
I have an Order class that has a list of OrderTransactions and I mapped it with a one-to-many Hibernate mapping like so: @OneToMany(targetEntity = OrderTransaction.class, cascade = CascadeType.ALL) public List<OrderTransaction> getOrderTransactions() { return orderTransactions; } These Order's also have a field orderStatus that ar...