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How to define database structure and insert some initial objects from scratch

Hi from Spain! We're evaluating ObjectDB and we have some questions: - How can we create the initial database structure of our application? We know objectdb is all about objects and probably doesn't need initial structure like tables, but how can we populate some "tables" with initial data from

LazyInitialization / join fetch

: When I click the Items table hibernate does all these other queries without me asking . I have a survey ... click the Items table hibernate does all these other queries without me asking . `` ` Hibernate

Visibility of changes in Transaction is not visible to a JPA QL Query

call to singleton with injected EntityManager    tx.commit();   } So are there rules for "table level/entity ... ? Thanks JFK John Francis > So are there rules for "table level/entity class level" operations

Changing Primary Key

I have a "Table" that currently has @Id private String userId; @Id private long range; private String someOtherField; I need to add a @Id to someOtherField. But when I add that, and query the table all the PK fields are null or 0. What can I do to modify primary keys

index - data rewrite

Hi we have found that applying indexes on an existing table erases the data. Are we doing something wrong. Thanks peric.emil Emil Perić Starting version 2.6.6 ObjectDB automatically activates new ... This was done few months ago and we just moved on. As far i remember the data records in the table where just

JDO sequences from ORM file

.spiffymap.model">         <sequence name="UserSequence" strategy="TABLE"/>     </package>  </orm ... .jdo file is definitely being read, because when I put strategy="TABLE" in there, the XML validation

Schema Evolution Question

.database.SummaryStagingDatabase:75 It may be worth noting that the table that was being read by ... schema client/restart ObjectDB/start new schema client" approach didn't work? Again, notable - the table

Multitenancy with discriminator

Hello, I have a very large business application that makes use of the Hibernate "Filters" feature and of the EclipseLink "Single Table Multitenancy with discriminator" feature in order to implement ... is: do you plan to add a feature like Hibernate "Filters" or EclipseLink "Single Table Multitenancy

Best practise loading big data

access on a large 2 dimansional table. Internally we used a list entities which hold a list of table rows which is a list of embeddable entities holding the final (String) value together with just

Explorer bug ? Objects seem to be missing from database in Class view, but are present as references

to understand. It seems with ObjectDB I would have to switch to TABLE or SEQUENCE strategy instead of AUTO ... and understood, but it seems that switching to SEQUENCE or TABLE would provide better performance than flush after every persist. support Support

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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