Fast Object Database for Java - with JPA/JDO support

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2

setReadOnly(flag)

Method javax.jdo.PersistenceManagerFactory void setReadOnly( boolean flag ) Sets the value for whether the datastore is to be considered read-only. ReadOnly set to false specifies that no updates can be performed to the datastore, and if updates are attempted a JDOReadOnlyException is thrown. Parameters: flag - Since: JDO 2.2 See Also: getReadOnly()
2

Eclipse plugin problem (using ObjectDB as a separate bundle)

your eclise v3.62 workspace. Before attempting to run, download and update using eclipse using ... . Finally click Run (first button on last row) For the "Groovy" plugin (see update site on attached dependencies.png), once the update is done and eclipse restarted, select the _com.epimss.lab plugin, right
2

Element.updateAction

Annotation Element javax.jdo.annotations.Element ForeignKeyAction updateAction Update action to apply to any foreign key for the element Returns: update action to apply to any foreign key for the element Default value: javax.jdo.annotations.ForeignKeyAction.UNSPECIFIED Since: JDO 2.1
2

Unexpected exception during open the database

, when indexes require updates. support Support The issue is not related to Issue #1860. It occurs ... block from objectdb.conf all works fine during opening the database. The automatic index update is not part of the objectdb.conf, this cannot be the reason.
2

javax.jdo.JDOEntityManager

statement, e.g., for update or delete. Create an instance of Query for executing a native SQL statement, e.g., for update or delete. Parameters: sqlString - a native SQL query string Returns: the new
2

javax.jdo.PersistenceManagerFactory

is to be considered read-only. ReadOnly set to false specifies that no updates can be performed to the datastore, and if updates are attempted a JDOReadOnlyException is thrown. Parameters: flag - Since: JDO 2
2

javax.persistence.FlushModeType

object, the persistence provider is responsible for ensuring that all updates to the state ... of updates made to entities in the persistence context upon queries is unspecified
2

Recursive calls with @PreUpdate annotation and Glassfish OutOfMemoryError

, which extends a BaseEntity. The BaseEntity has a @PreUpdate as per: @PreUpdate public void update(){ System.out.println(" ********* Called update() **********"); lastUpdatedDate = new Date ... is running embedded. Example output of error .... ********* Called update
2

Removing of an entity removes also another entity type

.1_03. btc_es BTC EmbeddedSystems OK. Thanks for the update. Please note that mixing direct DELETE / UPDATE database queries with EntityManager's operations is known as problematic. It is not specific to ObjectDB but general to JPA. DELETE / UPDATE JPA queries bypass the EntityManager mechanism
2

Pessimistic Lock Timeouts setting

again for the prompt answers. In the meantime, I'll use an optimistic lock and fail on stale updates. Willks ... * invocationCount=50 (that is a pretty aggressive test) Exception is: Failed to update object com.x.y.z ... haven't updated this thread. I have not got the issue again and I consider

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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