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16

objectdb-2.6.9_02 (with "objectdb.temp.no-enhancement-crc-check") vs. generic classes with interfaces: detailed investigation

: Persist project.. Exception in thread "main" [ObjectDB 2.6.9_02] javax.persistence ... .commit(EMImpl.java:290) at com.greensoft.objectdb.test.console.Main.createProject(Main.java:129) at com.greensoft.objectdb.test.console.Main.run(Main.java:250) at com.greensoft.objectdb.test
15

Optimistic locking failure

. F. Martinez Please explain the test output: Sequential=true Lock=WRITE Thread[Thread-2,5,main] READ  A1 version=1 value=0 Thread[Thread-2,5,main] READ  B2 version=1 value=0 Thread[Thread-2,5,main] WRITE A1 version=2 value=10 Thread[Thread-3,5,main] READ  A1 version=2 value=10 Thread[Thread
15

EntityManagerFactory Fails To Swtich Over To Slave When Master Is Unavailable

.EMF.createEntityManager(EMF.java:253) at tutorial.Main.main(Main.java:22) Caused by: com.objectdb ... .util.*; public class Main { private static boolean WRITE_DATA_TO_DATABASE = false; public static void main(String[] args) {   EntityManagerFactory emf = null;   EntityManager em = null
14

ObectDb 2.3.6 in OSGi environment

) at org.eclipse.pde.internal.junit.runtime.RemotePluginTestRunner.main(RemotePluginTestRunner.java:62 ... .lang.reflect.Method.invoke(Method.java:601) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584) at org.eclipse.equinox
12

Updating Entities

() { //Error Checking - All have been verified to be passed   Main.paygradeDB.getTransaction().begin();   this.rate = rate;   Main.paygradeDB.getTransaction().commit();   return true; } } Each of these Entities are managed in Main public class Main extends Application { private static
3

java.lang.Exception

:9) at MyClass.crunch(MyClass.java:6) at MyClass.main(MyClass.java:3) This example was produced by running the program: class MyClass { public static void main(String[] args ... ) at Junk.main(Junk.java:4) Caused by: MidLevelException: LowLevelException at Junk.c
2

ClassCastException in Tuple.get

how all calls to Tuple.get(TupleElement) fail with ClassCastException. Exception in thread "main ... .objectdb.o.TPE at com.objectdb.o.TPL.get(TPL.java:91) at Main.main(Main.java:43) Cheers! PS ... results in ClassCastException: Exception in thread "main" java.lang.ClassCastException
0

javax.jdo.JDOFatalException

) at MyClass.main(MyClass.java:3) This example was produced by running the program: class MyClass { public static void main(String[] args) { crunch(null); } static void ... : LowLevelException at Junk.a(Junk.java:13) at Junk.main(Junk.java:4) Caused by
0

javax.jdo.JDOUserException

(MyClass.java:6) at MyClass.main(MyClass.java:3) This example was produced by running the program: class MyClass { public static void main(String[] args) { crunch(null ... : MidLevelException: LowLevelException at Junk.a(Junk.java:13) at Junk.main(Junk.java:4
0

printStackTrace()

(MyClass.java:9) at MyClass.crunch(MyClass.java:6) at MyClass.main(MyClass.java:3) This example was produced by running the program: class MyClass { public static void main(String ... :13) at Junk.main(Junk.java:4) Caused by: MidLevelException: LowLevelException

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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