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ObjectDB License

have been purchased) does not require additional separate licenses. Purchase a Server License Site ... addition also covers installation of ObjectDB on: Home computers and laptops of employees in
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JPA Persistable Types

. In addition, only instances of entity classes preserve identity and are stored ... and keys and values in maps) are either null values or instances of persistable types. In addition
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JPA Query Expressions (JPQL / Criteria)

: * (multiplication), / (division), + (addition) and - (subtraction). Comparison operators ... ] MEMBER [OF] and the [NOT] LIKE operator. Logical operators: AND, OR, NOT. In addition, JPA queries
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Running JPA Queries

other case. In addition, the Query interface defines a method for running DELETE and UPDATE queries ... this routine operation JPA provides an additional method, getSingleResult, as a more convenient method
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What are the main benefits of using ObjectDB?

multiple values (even for a simple data structure such as a collection of strings). In addition
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ORDER BY clause (JPQL / Criteria API)

this case, the first expression is the primary order expression. Any additional order expression
1

Spring MVC and JPA Tutorial

are stored in an ObjectDB database. This tutorial is available in the following versions: In addition, the demonstrated application is available as a Maven project:
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Step 4: Run the Application

an additional 1,000 objects. You can view the content of the database file by opening it in the ObjectDB
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[ODB1] Chapter 4 - JDO Metadata

) and classes B, C and D (in package test), as persistent. In addition to the required name attribute, a <class ... and cannot be shared by references from multiple objects. In addition, embedded objects of persistent classes
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[ODB1] Chapter 7 - JDOQL Queries

satisfying the given filter. In addition to these three main components, queries can include ... in the filter (usually at least one additional appearance) are in subexpressions that are ANDed

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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