About Index

release

2.3.4

... and NullPointerException in using a composite index in queries ( issue #74 ). Fixed Explorer bugs: editing ... Fixed a ClassCastException in using a composite index in queries ( issue #71 ). Fixed handling derived Id ...

 
release

2.3.0

... Fixed a bug in query plans that use an inherited index . Fixed bugs in queries on collections. ... Improved cleanup and reusing space after index deletion. Changed default configuration (enabled recovery, ...

 
api-jdo

javax.jdo.annotations.Version

Annotation for the versioning of the class.(Annotation of JDO)

 
forum_thread

JDO sequences from ORM file

I want to use sequences in JDO without using annotations. Normally this is done with a package-X.orm file, where X is a value passed to the PersistenceManagerFactory as the value of property "mapping". I'm encouraged to see that the JDO zip that comes with ObjectDB includes the DTD/XSD for this type of file, though I can't see a mention of it in the manual. ... "JdoTypes$PersistenceCapableWithIndex" > <index name = "i1" unique = "false" > <field ... <field name = "path2" /> </index > </class > <class name = ...

 
issue

Server NPE

I'm getting the following NPE when attempting to persist an object to a server based database: ... The stack trace indicates a problem in updating an index, maybe in a new type (or a new index). If possible, a test case that reproducea this exception will be ...

 
page

ObjectDB Object Database Features

ObjectDB provides a rich set of features, many of them as the result of supporting the JPA and JDO APIs.... of an entity. See JavaDoc Reference Page... , @Index javax.jdo.annotations.Index JDO annotation Annotation for a database index. See ...

 
api-jdo

javax.jdo.annotations.Discriminator

Annotation for the discriminator of the class.(Annotation of JDO)

 
release

2.3.5

... and NullPointerException in using a composite index in queries ( issue #74 ). Fixed Explorer bugs: editing ... Fixed a ClassCastException in using a composite index in queries ( issue #71 ). Fixed handling derived Id ...

 
forum_thread

Low performance when getting grove roots

Hi, I have a grove-like structure of objects, every objects referencing its parent. Root objects have null as the value of this parent reference. To find the roots I execute a query. If the number of objects in the tree is significant, this query takes almost forever, it seems ObjectDB loads all objects on the DB to test their parent field value. Id there a way to force ObjectDB to create an index for this field? Regards, Vladimir ... Id there a way to force ObjectDB to create an index for this field? Regards, Vladimir ... a new database file that is created after defining the new index? Using new indexes with an existing database requires fixing the ...

 
forum_thread

Schema migration - long to String

Hi, I need to change field type in our model from long to String. After changing filed type in our model and repairing database with doctor, most of our entities is gone. Doctor puts some errors on console: ... OK, I should mention one thing. This field has an index on it. After migrating schema, explorer was throwing an error about some ... My assumption is, that database schema was migrated, but index left for old values and when trying to rebuild this index, there was ...