9 | Problem with @OrderByWhen I use @OrderBy and supply multiple order fields I get and error when ObjectDB Explorer expands ... is referenced as if it were an entity instead of a field of an entity. If I remove the multiple fields ... bug in handling multiple order expressions in inverse (mapped by) fields. Version 2.2.2 includes |
9 | Multi-tenant setupHi, does anybody have experience with multi tenant setup of objectDB. For example using multiple schema or multiple database. How to handle connections between app (Jboss Wildfly) and pass query ... with multiple databases. It is very easy when accessing databases directly (by database path |
9 | Examples of queries paulfo Paul Boon See this sections in the manual regarding SELECT queries that select multiple expressions: Multiple SELECT Expressions Result Classes (Constructor Expressions) What you need is not unique for GROUP BY but for common for queries that return multiple expressions in every result. support Support |
9 | Where Does ObjectDB Block/Lock? PersistenceManager by multiple threads? 2) Does it lock at PersistenceManager.currentTransaction()? 3 ... are synchronized so multiple threads should be able to access and use a shared PersistenceManager instance safely ... against the same database concurrently (not in a queue) you will need multiple PersistenceManager instances |
9 | Embedable & Reference? This is the normal behavior. Embedded objects cannot be shared by multiple references. If you have multiple references to an embedded object during persist then multiple instances of that embedded object are stored |
7 | Objectdb EntityManagerFactory problem one EntityManagerFactory per application, with multiple EntityManager instances for multiple database connections. support Support |
7 | ObjectDB embeddable SpringbootHi I have not seen, cursory search was not informative, if odb can be embedded like derby. How does odb handle byte[]. How do you create multiple dbs. Finally is there a gui to examine the schema ... ). > How do you create multiple dbs. See this documentation page. > Finally is there a gui to examine the schema? Yes. The Explorer. support Support |
7 | Activation Issue your site license to generate multiple activation codes. You may also specify multiple activation codes in |
7 | Are Queries in ObjectDB Multithreaded ?. However, if your application use multiple threads that execute multiple queries against ObjectDB simultaneously, then ObjectDB |
7 | Optimistic lock failed your accessing that object in the database from multiple methods simultaneously or you've got some super ... then you can try waiting before trying the transaction again or trying multiple times. jgleoj23 Joseph Gardi |
