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persitencia (Preguntas y respuestas)

class="code">getRowCount() with a SELECT COUNT query. Implement 

errors on repair

we are using version 2.6.7. On running the doctor we have message like free page list broken ... unexpected total page count ... what could be the reason for this ?   hgzwicker Hans-Georg Zwicker Unfortunately

Multithreading Test and Deadlock

I move on to testing the multi threaded part of ObjectDB. From the same code (MyMain.java), I set the thread count from 1 to 4 and not only do I found it's slower overall (each thread only needs to insert 250K entities) but the threads are stuck with a deadlock.

ClassCastException on SELECT NEW ... after UPDATE over Java RMI

via RMI after the update. For example SELECT COUNT(*) ..., or SELECT r FROM ... all work fine.

Query filter comparing Dates

inner millisecond count. I attached the whole test case.  

Grouping by date()

a one more place with this issue. Query: select hour(ov.created), count(ov

How to convert a boolean to an int in the query?

+ ... + (count(likedPersons) > 0)) galandor Orlov Sergey Following your request

java.lang.ClassCastException: com.objectdb.o.RFV cannot be cast to com.objectdb.o.RSV

The following query: SELECT count(m) FROM Message m WHERE m.attachments.original=:template is generating this exception: [ObjectDB 2.5.1_05] Unexpected exception (Error 990)   Generated by Java

ObjectDB needs "insert ignore"

="SELECT count(c) FROM Student c WHERE c.name = :stuName and c.sid=:stuID" ) then run

com.objectdb.o.InternalException: null

------------------- [1] Page #10 entry 5 has unexpected field count (1 instead of 12)   se.firstinsurance