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JPA query of a Set of terms

? For example, suppose I have a table that maps a search terms to pages: @Entity public class SearchIndex { @Index SearchTerm term; @Index Page page; } Now suppose I have an array ... that are already persisted. em.createQuery(     "SELECT DISTINCT si.page FROM SearchIndex si

Soft Reference Object Cache Recommendation

and use 1 MB for the ObjectDB Datastore page file cache with page file size of 64 KB. Here are relevant objectdb.conf settings: <size initial="64kb" resize="64kb" page="64kb" /> <processing cache ... datastore page file cache keeping strong references to the pages that comprise the data of the byte

Chapter 3 - Using JPA

This chapter explains how to manage ObjectDB databases using the Java Persistence API (JPA). The first two pages introduce basic JPA interfaces and concepts: The next section explains how to use JPA for database CRUD operations: More advanced topics (e.g. locking and events) are discussed in the last section:

Shared (L2) Entity Cache

on the client side - ObjectDB manages also several caches on the server side: Cache of database file pages

Chapter 6 - Configuration

> </objectdb> Each one of these seven configuration elements is explained in a separate section: This page

ObjectDB Website - Terms and Conditions of Use

are under other licenses. See the Credits and Attributions page. 3. Disclaimer The materials on ObjectDB

JPA Primary Key

continuously and can be collected by accessing a minimum number of database pages. On the other end

Unexpected exception (Error 990) on find

850977) [2] Unexpected total page count: 206592 (expected 206563) BTree Value Errors ... ) Page Relation Errors -------------------- [1] Page #96658 unexpected exception: null [2] Page #96658 last key is null, parent page #144908 next key is 'Elementarprodukt:400000100465140:7:1:' [3

NetBeans/JPA Java EE Tutorial

This is the NetBeans version of the Java EE JPA tutorial. It demonstrates how to create and run a full Java EE 6 MVC (Model View Controller) web application in NetBeans - using GlassFish, ObjectDB and JPA. The demo web application manages a basic guestbook page. Every visitor can sign the guestbook

Step 3: Add a Context Listener Class

and the database - when the application stops (contextDestroyed). The next step is adding a servlet class that will manage the guestbook page.

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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