8 | 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 |
8 | 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 |
8 | 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 |
8 | 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 |
6 | Inserted entities with strings as keys and indices needs more and more ram memory in comparing to primitive integers as keys and indices @GeneratedValue primary keys are sequential. So when you persist multiple new objects their primary keys ... primary keys are sequential. So when you persist multiple new objects their primary keys are sequential |
6 | ArrayIndexOutOfBoundsException at com.objectdb.o.ALS.c(ALS.java:89) it is more efficient to create a single EntityManagerFactory with multiple EntityManager instances. It is uncommon to create multiple EntityManagerFactory instances as demonstrated by your code. support Support |
6 | On ensuring ID available after persist allocation to commit or flush - multiple IDs for multiple objects can be allocated together in |
6 | Objectdb EntityManagerFactory problem one EntityManagerFactory per application, with multiple EntityManager instances for multiple database connections. support Support |
6 | Are Queries in ObjectDB Multithreaded ?. However, if your application use multiple threads that execute multiple queries against ObjectDB simultaneously, then ObjectDB |
6 | Selective merge/cascade of detatched entity memory is that they are shared between multiple threads (all using 'synchronized' operations for field ... entity objects. To avoid multiple memory objects for the same database object you may try sharing |
