About schema

31-40 of 200Refresh
Forum
19

How does objectdb deal with conflicting schemas?

Suppose we have an objectdb network server with multiple clients connecting to it. Some clients have the latest object schema, matching that of the server. But some have an older schema, not using fields that have since been added. Will this work? This is strictly forbidden. You must have the same version of classes everywhere. FastModel
Forum
19

Indexes broken after schema update.

Anyone else noticed this? I updated an entity Object with some new fields, restarted the database to pick up the new schema and now none of the indexes work, except the @Id. I can query by any field ... the revised schema. It is a common operation to add persistent fields to existing applications
Forum
19

Is there a way to extract the schema from an existing Database?

Hi ObjectDB, Is there a way to extract the schema from an existing Database? i.e. without using my class files Thanks EKK The schema is available for viewing in the Explorer. You may use the JPA Metamodel API to extract it using your own code. EKK
Forum
19

Schema evolution & renamed/moved enum

to use the <schema> tag in the config file because my enum is not an entity. What is a the proper way of handling the migration? Thanks, Farid  It seems that in this case automatic schema evolution
Forum
19

Schema Update: class hierarchy change

Hello, we try to change the class hierarchy of an Entity. You wrote www.objectdb.com/database/forum/899 that ObjectDB support automatic schema evolution for adding and removing fields and for class ... fields up and down in the class hierarchy as part of the automatic schema evolution
Forum
19

Activation error on Schema change

to your schema may cause a similar exception. Please verify that an activation code ... where copied to new version directory. No schema change, no application modification just migration to new ODB
Issue
19

Collision Between Different Schema Versions of Entity Classes

Version 2.8.4 fixes a critical bug that in rare cases may cause collision between different schema versions of entity classes, when schemas have changes many times (usually more than 20 times). This bug mainly affects queries on hierarchy of multiple entity classes (i.e. a query on a super class
Issue
19

Crash after altering schema

Hi,  I got an exception after altering Schema.... (just adding an index). --- bmpccdeMac-mini:CloudAI eko$ java -jar build/libs/asli-cloudai.jar Current Working directory /Users/eko/work/asli ... (Thread.java:832) Note that after schema change you have to restart the server. Please advise
Manual
19

Chapter 6 - Configuration

The ObjectDB configuration file contains one root element with seven subelements: ... ... ... <schema> ... schema> ... ... ...
Manual
19

Database Explorer

objects. The [Schema] window shows the user defined persistable types (entity and embeddable classes) in ... an element for viewing (an entity class in the [Schema] tabbed window, a bookmark in the [Database