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Online Backup

on the server side). A new subdirectory with a name that reflects the current date and time (e.g ... asynchronously. Therefore, the backup query returns after the backup is started but at that time the backup

Database Server

: > java -cp objectdb.jar com.objectdb.Server If objectdb.jar is not in the current directory a path ... the & character at the end of the command line), on how to start the server automatically at boot time and stop it at shutdown time, and on how to restart the server periodically (for instance, using

Index Definition

one. This may take a significant amount of time if many entity objects have to be examined. Using proper indexes ... . Index management introduces overhead in terms of maintenance time and storage space, so deciding ... , java.sql.Date, java.sql.Time, java.sql.Timestamp. Any enum type. Reference to an entity object

What are the main benefits of using ObjectDB?

By using ObjectDB you can reduce development time and costs and improve your application performance. Reducing Development Time and Costs ObjectDB makes database programming easier and faster ... to shorter time to market and saving in the total development time and costs. Improving Performance

JPA Primary Key

. java.lang.String. java.util.Date, java.sql.Date, java.sql.Time, java.sql.Timestamp. Any enum type ... . This is especially useful when using queries that return large result sets. As an example, consider a real time ... is represented by an Event entity object that holds time, sensor ID and additional details. Suppose

Setting and Tuning of JPA Queries

query time flush at the EntityManager level: em.setFlushMode(FlushModeType.AUTO); // Enable query time flush at the level of a specific query: query.setFlushMode(FlushModeType.AUTO ... query execution time in milliseconds. A QueryTimeoutException is thrown if timeout is exceeded

Eclipse Public License - v 1.0

license shall apply to the combination of the Contribution and the Program if, at the time ... such failure in a reasonable period of time after becoming aware of such noncompliance ... reserves the right to publish new versions (including revisions) of this Agreement from time to time


has no effect if the instance is already deleted in the current transaction. This method throws ... and manipulation outside of a JDO environment. When detaching instances, only fields in the current FetchPlan ... must either be in the default-fetch-group, or in the current custom FetchPlan. Parameters: pcs

[ODB1] Chapter 8 - ObjectDB Server

starting the server automatically at boot time and stopping it at shutdown time, or on restarting ... inactivity time (in seconds). If a connection is inactive for more than the specified time the server

[ODB1] Chapter 3 - Persistent Classes

time, e.g. an Integer, or null value. Similarly, a field whose type is one of the persistent ... a collection that contains objects of non persistent types, at storage time. As an extension to JDO ... ") becomes the new entry point at development time. First the enhancer is called, and when enhancement

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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