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125

Query to find object from element of a contained collection

I have an OrderData class, containing an OrderItemData collection, i would like to find OrderData elements by OrderData.items.itemId. I cant get a proper query with MEMBER OF or IN. Does anyone have an idea on how i could formulate that as Typed or CriteriaBuilder query? Thanks. @Entity public
125

Logging archive contains non-objectdb log files

Hi, I'm dealing with problem, that objectdb's log archive folder contains several other log files which are not part of objectdb. We use single location for our application log files and also objectdb log files. When application crashes or retarts, we noticed that several of our log files reside
123

The project does not contain a persistence unit

The project does not contain a persistence unit
123

embed the .odb file in tomcat webapp container

embed the .odb file in tomcat webapp container
16

Index Definition

. When an entity object is stored in the database every indexed field must contain either null or ... . Arrays and collections that contain values of the above types (including null). Indexes ... are only allowed when using embeddable classes as fields of embedded object are stored as part of the containing
5

Eclipse/JPA Java EE Tutorial

Step by step tutorial that demonstrates how to build a simple Java EE web application (with Servlet, JSP and an EJB Session Bean) in Eclipse using JPA.
5

NetBeans/JPA Java EE Tutorial

Step by step tutorial that demonstrates how to build a simple Java EE web application (with Servlet, JSP and an EJB Session Bean) in NetBeans using JPA.
1

[ODB1] Chapter 6 - Persistent Objects

the database as part of a containing object. Objects stored explicitly by makePersistent ... or queried directly (an embedded object can only be retrieved using a reference from its containing ... .getObjectId(person); String s1 = oid.toString(); // s1 contains a temporary negative number pm
1

[ODB1] Chapter 9 - ObjectDB Explorer

the bin/sh directory. Before using explorer.sh, you have to edit the paths that it contains ... contains (root objects are discussed in chapter 6). The "Query" window enables a user to execute JDOQL ... the "Tools | Options" menu command. The "General" Page The "General" page contains various options
1

[ODB1] Chapter 2 - A Quick Tour

by step. Both sample programs are contained in ObjectDB's samples directory. 2.1 Hello World ... is expected to be: Hello World 0 Hello World 1 After two runs, the database contains a list ... source file, HelloWorld.java, containing a single class: 1 // A simple program that manages a list

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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