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92

Unexpected internal exception during set field of an Embeddable to null

scenario with which we can reproduce that. But the setting of "original value" for Class
89

Unable to update a OneToMany Set

Unable to update a OneToMany Set
89

setting activation code in persistence.xml or env file or system properties

setting activation code in persistence.xml or env file or system properties
18

Object creation in the Explorer requires automatically set primary keys

The feature of creating new objects in the Explorer is currently supported only for entity classes that have primary keys that are set automatically. support Support
18

UPDATE query cannot set a new field after schema change

I've added a new property/field to one of my objects and want to set the value of this (boolean) property to false for all existing entities in the DB. I tried to execute an update statement with the Explorer tool. The statement ends and tells me that 1000 entities have been updated. I then save
17

After using the enhancer, Lazy loaded collections are no longer loading. They are set as null

After using the enhancer, Lazy loaded collections are no longer loading. They are set as null
16

Query Parameters in JPA

for a real value. Before the query can be executed a parameter value has to be set using the setParameter ... multiple times in the query string. A query can be run only after setting values for all its parameters ... , which generally excels in its thin and simple API. There are 9 methods for setting parameters in a query
14

Shared (L2) Entity Cache

instances of the same database - including on different client machines. Setting the Shared Cache ... has to be specified. Persistence Unit Settings The shared cache can also be enabled or disabled using a persistence ... >      ...    </persistence-unit> The javax.persistence.sharedCache.mode property can be set to one of the following values
1

[ODB1] Chapter 8 - ObjectDB Server

this setting using the –port command line option to specify another port, as shown below: > java ... , <server> and <users>. The <server> sub element specifies general server settings, and the <users> sub ... will be listening for new connections. Usually, it should be set to 6136, which is the default port
1

javax.jdo.PersistenceManagerFactory

be configured. If the ConnectionFactory property is set (non-null) then all other Connection properties including ConnectionFactoryName are ignored; otherwise, if ConnectionFactoryName is set (non-null ... is set (non-null) then ConnectionFactory2Name is ignored. Operational state (PersistenceManager pooling

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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