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5

Defining a JPA Entity Class

(except that all JPA exceptions are unchecked whereas Java IO exceptions are checked). Persistent Fields in
5

JPA / JDO Class Enhancer

with ObjectDB Enhancer as a Java Agent, every loaded class is checked and automatically enhanced in memory
5

Query Parameters in JPA

), and a method for checking if a specified parameter has a value (isBound). These methods are not
5

Comparison in JPQL and Criteria API

To check for NULL using standard JPQL you can use the special IS NULL and IS NOT NULL operators
5

Shared (L2) Entity Cache

: Cache cache = emf.getCache(); The Cache object enables checking if a specified entity object
1

Java EE 6 JPA Tutorial - IntelliJ Project

at the toolbar and click the green run icon (or Shift+F10). If the browser fails to open check the settings at File > Settings > Web Browsers.
1

JPA Web App Tutorial - IntelliJ Project

and click the green run icon (or Shift+F10). If the browser fails to open check the settings at File > Settings > Web Browsers.
1

Step 3: Create an ObjectDB Data Source

to check the connection url: Click the Finish button to complete the creation of the ObjectDB data source
1

Step 7: Run the Spring Web App

and clicking Finish. To install a new server check the Manually define a new server radio button (after Run As
0

[ODB1] Chapter 4 - JDO Metadata

is a reference index. In that case equality queries will check reference equality (as == operator in Java

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.

Need Help?

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