38 | java.time.*I get errors when trying to persist anything in java.time.* For example LocalDate, Month, Period. Will these be supported sometime in the future? scoobyrooster Jason Java 8 date and tome is not supported yet, except by serialization (which is not recommended and disabled by default |
31 | _UserException: Attempt to open a database file '...' that is currently in use around after searching google. However this exception only happen after running the app the second time. If I'm runnig the app the first time after rebooting my system. Everything is ok but after closing the app ... mode the database cannot be accessed at the same time by more than one process. Make sure |
30 | ObjectDB current status of the BIRT pluginObjectDB current status of the BIRT plugin |
7 | several times a day queries take several minutes take around 10 seconds but sometimes several times a day take around 3-10 minutes |
7 | queries more than 10 times slower using 2.8.1 versus 2.7.6 to again and again transfer this huge database, we are a bit under time pressure hgzwicker Hans-Georg Zwicker |
5 | JPA Persistable Types only once even if they are referenced multiple times. Referencing instances of other persistable types from multiple ... .Time, java.sql.Timestamp. Date and time types are discussed in more detail in the next paragraph. Date and Time (Temporal) Types The java.sql date and time classes represent different parts of dates |
4 | FROM clause (JPQL / Criteria API), CHARACTER_LENGTH, CLASS, COALESCE, CONCAT, COUNT, CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP ... response time. Database Management Systems (DBMS), including ObjectDB, try to optimize ... , since the referenced Capital objects are retrieved one at a time, i.e. the number of round trips to the database |
4 | Literals in JPQL and Criteria Queries are more generic and efficient because they can be compiled once and then run many times with different parameter ... ), a feature that is not currently supported by all JPA implementations. String Literals JPQL follows ... equivalent. Date and Time Literals JPQL follows the syntax of SQL and JDBC for date literals: Date - {d |
0 | [ODB1] Chapter 5 - JDO Connections time this method is called, a PersistenceManager instance representing a connection to the database ... of the PersistenceManagerFactory at the time of this operation are used to initialize the new ... to be completed, using the temporary file, the next time the database is opened. This feature |
0 | [ODB1] Chapter 6 - Persistent Objects, every transient object that, at commit time, is reachable from a persistent object (using persistent ... it. Therefore, for efficiency sake, it is recommended to avoid time consuming operations in no-arg ... are usually more efficient in terms of execution time and database space |
