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Database Replication and Clustering

databases on the slave server are automatically generated under a special root directory, $replication
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Date and Time in JPQL and Criteria Queries

by using the generic CriteriaBuilder's function method, as follow: // Create expressions
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Retrieving JPA Entity Objects

of the same class that it takes as a first argument (using generics). An IllegalArgumentException is thrown
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Literals in JPQL and Criteria Queries

are more generic and efficient because they can be compiled once and then run many times with different parameter
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Step 6: Set the Spring XML

(whose name is derived from the name of the Spring dispatcher servlet in web.xml). To generate
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Step 4: Add a Servlet Class

the next tutorial step). The JSP uses the "guest" attribute to generate the page output. Finally
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Step 6: Set the Spring XML

the name of the Spring dispatcher servlet in web.xml). To generate that file: Right click the WEB-INF
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Java EE JPA Tutorial - Maven Project

The current directory should be guestbook-jee6. You will have to deploy the generated WAR file in
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Step 4: Run the Application

) When you run the application for the first time, a new ObjectDB database file is generated in
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[ODB1] Chapter 2 - A Quick Tour

must be declared in a metadata file named either package.jdo (generic name) or Person.jdo (name of the class

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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