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294

Online Backup

also online backup, for backing up an ObjectDB database while it is in use. This is useful in ... Backup The online backup can be started by executing a special query on an EntityManager (em) that represents the connection (local or remote) to the database:     em.createQuery("objectdb backup
37

ObjectDB Object Database Features

) Query Language - Java/SQL like syntax. Query Definition and API Dynamic query definition, including ... ) with an unlimited number of slave nodes. Dynamic composite database connections for high availability and fault tolerance. Online Backup Online backup by a simple query on an EntityManager
27

Database Transaction Replayer

can apply recorded database operations on a matching database backup (if available). This ability ... the recorded operations. It enables reproducing problems during debugging by repeating a failure. Backup ... contains two types of files: Backup files - with names of the form .odb Recording
14

JPA Query API

because it introduces the Country class to ObjectDB. Dynamic JPQL, Criteria API and Named Queries ... above, is referred to in JPA as dynamic query construction because the query string can be built dynamically at runtime. The JPA Criteria API provides an alternative way for building dynamic queries, based
12

Step 1: Create a Web Project

We start by creating a new Eclipse Dynamic Web Project: Open the [New Project] dialog box, e.g. by using File > New > Project... Select Web > Dynamic Web Project and click Next. Choose a Project Name ... the dynamic web project. Now, add ObjectDB support to the new Eclipse Project - by dragging the objectdb.jar
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Failed to generate dynamic type objectdb.java.util.ArrayList

.InternalException: com.objectdb.o.UserException: Failed to generate dynamic type objectdb.java.util.ArrayList com.objectdb.o.UserException: Failed to generate dynamic type objectdb.java.util.ArrayList at com ... to generate dynamic type objectdb.java.util.HashSet com.objectdb.o.UserException: Failed to generate
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Dynamic Metadata (JDO 3.0)

JDO 3 introduces the ability to specify and query metadata of persistable types dynamically. ObjectDB 2 supports specifying metadata by: JPA XML Mapping Metadata JPA Annotations JDO XML Metadata (e.g ... at build time. Dynamic metadata enables specifying metadata at runtime, for example, for dynamically
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How to create dynamic Entity class.

Hello, I was creating dynamic object to store data inside database. I am using javassist API to create dynamic class. Here i have written some code which is create dynamic class as well as object. Class and object successfully created. And insert data also now problem is only once object is created
11

Failed to enhance dynamic type

to generate dynamic type com.quasado.galaxy.foundation.api.language.LanguageContext I am curious why he does even try to generate dynamic type?? Can he simply ignore such things and enhance ... to overcome this by generating a dynamic synthetic type. Usually it succeed but in some cases it fails
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com.objectdb.o.UserException: Failed to generate dynamic type

.UserException: Failed to generate dynamic type Entities.AbstractLong at com.objectdb.o.MSG.d(MSG ... .loadClass(ClassLoader.java:357) ... 17 more [ObjectDB 2.6.1_05] Failed to generate dynamic type

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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