toplink-essentials

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How to reestablish a JDBC connection after a timeout?

I have a long-running method which executes a large number of native SQL queries through the EntityManager (TopLink Essentials). Each query takes only milliseconds to run, but there are many thousands[详细]

2023-03-08 15:51 分类：问答
JPA: NamedQuery of name: <query> not found

I\'m using Netbeans 6.9.1 and TopLink Essentials for the JPA. I had followed the necessary steps for JPA connection.[详细]

2023-02-23 06:36 分类：问答
JPA TopLink Help!

Greetings, As of now I had accomplished building a single-table JPA. But when going to one-to-one or one-to-many. Things get complicated.[详细]

2023-02-22 15:32 分类：问答
Toplink batch reading

IS their any way to set property like hibernate \'hibernate.batch_size\' in topl开发者_运维问答ink. which will increase fetching query performance.Batch reading is supported in TopLink, but I\'m not s[详细]

2023-02-22 03:56 分类：问答
PersistenceException with Umlaut in path

I experienced an odd behavior with a java desktop application that uses Toplink essentials as persistence provider.[详细]

2023-02-20 07:34 分类：问答
JPA with non-JTA: Is it possible to close EntityTransaction safely without commit?

I\'m using JPA Toplink-essential and developing RESTful web app. Here is one thing to mention first. Not using JTA[详细]

2023-02-10 14:06 分类：问答
Why JPA persist() does not generated auto-increment primary ID?

I\'m using JPA toplink-essential and SQL Server 2008 My goal is to get auto-increment primary key value of the data that is going to be inserted into the table. I know in JDBC, there is getInsertedId[详细]

2023-02-08 05:08 分类：问答
JPA: Does EntityManager.find() always return the same object reference for the same key?

I\'ve got an integration test of a DAO in which I use a shared EntityManager (via Spring, using SharedEntityManagerCreator).The test class is marked as @Transactional, as is the DAO method under test.[详细]

2023-01-26 03:36 分类：问答
JPA inserts slow with an object graph

I\'m trying to do a cascading save on a large object graph using JPA. For example (my object graph is a little bigger but close enough):[详细]

2023-01-04 08:32 分类：问答
JPA returning null for deleted items from a set

This may be related to my question from a few days ago, but I\'m not even sure how to explain this part. (It\'s an entirely different parent-child relationship.)[详细]

2022-12-29 01:47 分类：问答