Fast Object Database for Java - with JPA/JDO support

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17

JPQL Update & Delete (JPA 1.0)

JPQL (Java Persistence Query Language) supports updating and deleting database objects by queries. Currently ObjectDB supports only JPQL SELECT (retrieval) queries. Delete queries are supported ... one of the next builds. support Support Implementation of both DELETE and UPDATE queries was added in build 2.2.3_03. support Support
17

Collection update does not increase entity version and is not persisted

(all classes are enhanced) the version of the event does not increase and the updated event is not stored ... ) attachments = new ArrayList<>(); return attachments; } and update addAttachment
16

Schema Update: class hierarchy change

that should fix this issue. support Support Thanks for the Update. Now it works. How can data be saved
16

Indexes broken after schema update

, when new fields were added, whether or not the entity was updated, etc.). support Support I'll dig
16

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 that is not indexed on the existing Object but as soon as I try and query against a field
16

schema update procedure

Is there a specific procedure that we should follow when making schema updates? I have often found that it takes several restarts of the the server to complete the change. The issue is that there may be changes in many places. Each change appears to be applied as the class is first encountered
16

Update Entity references if we change the type of an entity

as dirty and changes will be committed. So after the database update your application can be used
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Running JPA Queries

other case. In addition, the Query interface defines a method for running DELETE and UPDATE queries: Query.executeUpdate - for running only DELETE and UPDATE queries. Ordinary Query Execution ... , they have to be caught and handled. DELETE and UPDATE Query Execution (with executeUpdate) DELETE and UPDATE queries
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1060_thread_update_Metamodel.png

1060_thread_update_Metamodel.png
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Best practice: Database update/migration of embedded databases in products

Best practice: Database update/migration of embedded databases in products

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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