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6

JPA / JDO Class Enhancer

with ObjectDB Enhancer as a Java Agent, every loaded class is checked and automatically enhanced in memory
6

Defining a JPA Entity Class

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

The ObjectDB Doctor tool provides two related services: Diagnosis and validation of an ObjectDB database file Checks a given ObjectDB database file, verifies that it is healthy and valid, and if the file is not valid (it is corrupted), produces a detailed diagnosis report of all the errors. Repair
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Query Parameters in JPA

), and a method for checking if a specified parameter has a value (isBound). These methods are not
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Shared (L2) Entity Cache

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

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.
0

[ODB1] Chapter 2 - A Quick Tour

// Check the arguments: 11 if (args.length != 3) 12 { 13

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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