About wrapper
JPA Persistable Types
Explains how JPA manages types, including entity classes, embeddable classes, primitive types, wrappers, string, date, enum, collections and maps.... long , float and double . Equivalent wrapper classes from package java.lang: Boolean , Byte , Short , ...
ODB tries to create log files inside its own jar on Win7
I sent a demo of an app I've been developing on Linux to some Windows 7 users, and they were unable to run it. The stack traces they sent me indicated that ODB was trying to create its log files inside objectdb.jar, which was inside the executable jar packaged by Eclipse. Here's the end of the stack trace: #1 2012-04-18 02:47 I sent a demo of an app I've been developing on Linux to some Windows 7 users, and they were unable to run it ...
ObjectDB Object Database Features
ObjectDB provides a rich set of features, many of them as the result of supporting the JPA and JDO APIs.... float, double). Wrapper types (Boolean, Byte, Short, Character, Integer, Long, Float, ...
2.4.0
... Added support of running ObjectDB within Eclipse 3.7 wrapper jar . Added support of sharing an identifier name for a ...
2.4.0_01
... Added support of running ObjectDB within Eclipse 3.7 wrapper jar . Added support of sharing an identifier name for a ...
Blocked by find
I have a container object which wraps an objectdb database. There is a "putIfAbsent(String id, Object obj)" method which is synchronized and attempts to load an object by id using the EntityManager "find" method. If nothing is returned from the db the passed object is persisted to the db. I have 5 threads which use this method. In a run today one of the threads seems to have got stuck somewhere in the find. The thread dump looks like: ... one type of Entity. Access is through an application wrapper object with "put" and "get" methods - these are synchronised. ... where the application blocks with one thread in the wrapper and all other waiting. A dump of the thread which made it into the ...
[ODB1] Chapter 4 - JDO Metadata
Shows how to define JDO metadata for persistence capable classes.... has to be specified as demonstrated by field f5 . Wrapper objects, strings, dates, collections and arrays are embedded by ... int , long , float or double ) embedded wrapper ( Boolean , Byte , Short , Character , Integer , Long ...
setResultClass(cls)
Specify the type of object in which to return each element of the result of invoking execute or one of its siblings.(Method of javax.jdo.Query)
[ODB1] Chapter 7 - JDOQL Queries
Explains how to use JDOQL, the Java/JDO Query Language.... compared using all six comparison operators. Numeric wrapper types ( Byte , Short , Character , Integer , Long , ... ( + , - , * , / ) can be applied to numeric wrapper types (Byte, Character, Short, Integer, Long, Float, Double, and also ...
javax.jdo.Query
The Query interface allows applications to obtain persistent instances, values, and aggregate data from the data store.(Interface of JDO)
