Internal Website Search

81-90 of 200 resultsRefresh

Order in WHERE Clause affects behaviour on DATE/DATETIME columns

.setParameter("query", "%myQuery%"); I don't get any error! The order of the WHERE clauses

Entity can be found by find() but not by query

, sometimes we get the entity and sometimes we don't get the entity by query. Have you an idea

Mapped by fields are not initialized by JOIN FETCH in queries

As demonstrated in this forum thread, a mapped by collection field with lazy fetch mode is not initialized in results of a query that uses JOIN FETCH on that collection field (when enhancement is used). support Support   Build 2

Strings in JPQL and Criteria Queries

>To match an actual underscore or percent character it has to be preceded by an escape character ... > is evaluated to 'UK'. By default, space characters are removed ... demonstrated above, most methods are overloaded in order to support optional arguments and when applicable

What are the main benefits of using ObjectDB?

By using ObjectDB you can reduce development time and costs and improve ... fields can be stored by ObjectDB simply as part of the containing object. Relational databases lack that ability and require multiple tables, multiple records and join operations in order to support


"> Create an ordering by the ascending value of the expression. Create an ordering by the ascending value ... ) Create an ordering by the descending value


> If the ordering element is not specified for an entity association, ordering by the primary key ... { ... @ManyToMany(mappedBy="students") @OrderBy // ordering by primary key is assumed ... > (ascending order) is assumed. If the ordering element is not specified, ordering by


should be used for ordering that is visible as persistent state and maintained by the application ... to maintain the persistent order of a list. The persistence provider is responsible for maintaining the order upon retrieval and in the database. The persistence provider is responsible for updating

JPA Tutorials

Tutorial Only basic Java experience is required in order to follow ... > Maven Projects for Download The tutorials provide step by step instructions

JDO Internal Callbacks

The following interfaces can be implemented by persistence capable classes in order to response to JDO lifecycle events: