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Handling "is null" in where clause

; if (Math.random() < 0.5) {             a.setSimpleField(new Double(Math.random() * 1000).intValue());     

UserException: Invalid configuration in 'internal' - Check permissions

.jscilib.jppf.math.data.stats.bin.ComputePCA.main(ComputePCA.java:129) at com.objectdb.jpa ... ;(ObjectDBBulkDataset.java:52) at com.jscilib.jppf.math.data.stats.ComputeRawPcaStatisticsTask.run

Explorer in 2.3

="pre-query"> select Math.random() Fully qualified class names have to be specified

Problem with @UniqueConstraint

final class Test2 { public static void main(String[] args) { int r = (int)(Math

ObjectDB can't be activated

on the server and post the output: import java.math.*; import java.net ... "> import java.io.UnsupportedEncodingException; import java.math.BigInteger; import java.net

ObjectDB-2.6.9: Failed to commit transaction: Failed to set numeric value of field property Element.id using reflection

enhanced. ... Type com.greensoft.greenstar.entity.quantity.maths.NaturalNumber is not enhanced. Severe: [2016-08-17 09:27:22 #956 type] Type com.greensoft.greenstar.entity.quantity.maths

[ObjectDB 2.2.6_02] Unexpected exception (Error 990) at com.objectdb.o.OBC.aJ(OBC.java:961)

;   import java.math.BigInteger; import java.util

javax.jdo.Query

JDO JavaDoc Reference Documentation - The Query interface allows applications to obtain persistent instances, values, and aggregate data from the data store.