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Eclipse Public License - v 1.0

of the date such litigation is filed. All Recipient's rights under this Agreement shall terminate

JPA Criteria API Queries

expressions are provided in the following page sections: Literals and Dates (literal, nullLiteral

ORDER BY clause (JPQL / Criteria API)

JPQL expression whose type is comparable (i.e. numbers, strings and date values) and is derived

Locking in JPA

another EntityManager) since it was retrieved by the current updater. Optimistic locking ... another EntityManager instance) currently holds a PESSIMISTIC_WRITE lock on that database object. A PESSIMISTIC_WRITE lock request fails if another user currently holds either a PESSIMISTIC_WRITE lock or

combined index not used

we take an endDate that is 30 days from the current date (in your case the date of the last Action). The endDate ... [all])),(a.endDate>=current-java.sql.Date)),(a.state=3)),(a.subType=3)),(a.type=0)) <x> v$1:bound ... (extract(a,type(Action[all])),(a.endDate>=current-java.sql.Date)),(a.state=3)),(a.subType=3)),(a.type=0

JPA / JDO Class Enhancer

.Enhancer If objectdb.jar is not in the current directory a path to it has to be specified. Alternatively ... technique is inferior to the other techniques that are described above. First, currently it only works

Can I use ObjectDB with languages other than Java?

ObjectDB can be used by Java Virtual Machine (JVM) languages, such as Java, Groovy and Scala. It can also be used with other languages, such as Python, JavaScript, Ruby and PHP, but currently ... of ObjectDB for .NET is currently under development and future support for other languages

[ODB1] Chapter 9 - ObjectDB Explorer

of that object. Select an object in a currently open table or browser viewer to explore it in a new ... " command switches the current viewer to focus on the selected object. A double click on the target element ... file to a new location, applying all the changes of the current transaction only to the new database


. Returns: the current setting of the flag Since: JDO 2.0 void setCandidates( Extent pcs) Set ... and instances of wrapper classes are valid. Equality and ordering comparisons of Date fields and Date ... expression returned false for the evaluation of the current set of variable values. Other values

[ODB1] Chapter 5 - JDO Connections

to modify an object that is currently in use by some other PersistenceManager instance (for read or write), as well as any attempt to read an object that is currently being modified by some

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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