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JPA Primary Key

is defined the primary key value is automatically injected into that field by ObjectDB

JPA Named Queries

dynamically into the query string and results in more efficient queries. @NamedQuery

JPA Reference (JavaDoc)

into the following sections: The purpose of these documentation pages is to serve as a reference. In

Step 6: Set the Spring XML

To integrate the Spring Framework into a web application we have to add the definition of the Spring dispatcher servlet to the web.xml configuration file and to configure that servlet using another xml configuration file. Open the web.xml file (under src/main/webapp/WEB-INF) in a text editor (by

Step 4: Add a Servlet Class

the application server into the guestDao field automatically (since the field is marked with the @EJB

Step 4: Add a Controller Class

is automatically constructed and injected by Spring into the guestDao field (because it is annotated

[ODB1] Chapter 6 - Persistent Objects

Object States Objects in a JDO application are divided into persistent objects, which represent

JDO Reference (JavaDoc)

This reference contains the API documentation (similar to JavaDoc) of JDO 2.2. The content is derived from the original JDO documentation with some additions and notes. The most basic JDO types are: All the other JDO types are organized into the following sections:

JDO Annotations

JDO defines dozens of annotations that can be divided into the following groups:

[ODB1] Chapter 7 - JDOQL Queries

into two commands: Query query = pm.newQuery(Person.class, "this.age >= 18"); query.compile

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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