public void apply(InternalObjectContainer container) { final Queries queries = Db4oMBeans.newQueriesMBean(container); final CommonConfiguration config = Db4oLegacyConfigurationBridge.asCommonConfiguration(container.configure()); config .diagnostic() .addListener( new DiagnosticListener() { public void onDiagnostic(Diagnostic d) { if (d instanceof LoadedFromClassIndex) { queries.notifyClassIndexScan((LoadedFromClassIndex) d); } } }); final EventRegistry events = EventRegistryFactory.forObjectContainer(container); events .queryStarted() .addListener( new EventListener4<QueryEventArgs>() { public void onEvent(Event4<QueryEventArgs> e, QueryEventArgs args) { queries.notifyQueryStarted(); } }); events .queryFinished() .addListener( new EventListener4<QueryEventArgs>() { public void onEvent(Event4<QueryEventArgs> e, QueryEventArgs args) { queries.notifyQueryFinished(); } }); }
private void addNativeQueryListener() { ((InternalObjectContainer) bd) .getNativeQueryHandler() .addListener( new Db4oQueryExecutionListener() { public void notifyQueryExecuted(NQOptimizationInfo info) { System.err.println(info.message()); System.err.println(info.predicate()); } }); }
/** internal method, public for implementation reasons. */ public void apply(final InternalObjectContainer objectContainer) { if (objectContainer.isClient()) { throw new IllegalStateException( getClass().getName() + " should be configured on the server."); } EventRegistryFactory.forObjectContainer(objectContainer) .committing() .addListener( new EventListener4() { private FieldMetadata _fieldMetaData; private void ensureSingleOccurence(Transaction trans, ObjectInfoCollection col) { final Iterator4 i = col.iterator(); while (i.moveNext()) { final ObjectInfo objectInfo = (ObjectInfo) i.current(); if (reflectClass() != reflectorFor(trans, objectInfo.getObject())) continue; final Object obj = objectFor(trans, objectInfo); Object fieldValue = fieldMetadata().getOn(trans, obj); if (fieldValue == null) { continue; } BTreeRange range = fieldMetadata().search(trans, fieldValue); if (range.size() > 1) { throw new UniqueFieldValueConstraintViolationException( classMetadata().getName(), fieldMetadata().getName()); } } } private boolean isClassMetadataAvailable() { return null != classMetadata(); } private FieldMetadata fieldMetadata() { if (_fieldMetaData != null) { return _fieldMetaData; } _fieldMetaData = classMetadata().fieldMetadataForName(_fieldName); return _fieldMetaData; } private ClassMetadata classMetadata() { return objectContainer.classMetadataForReflectClass(reflectClass()); } private ReflectClass reflectClass() { return ReflectorUtils.reflectClassFor(objectContainer.reflector(), _clazz); } public void onEvent(Event4 e, EventArgs args) { if (!isClassMetadataAvailable()) { return; } CommitEventArgs commitEventArgs = (CommitEventArgs) args; Transaction trans = (Transaction) commitEventArgs.transaction(); ensureSingleOccurence(trans, commitEventArgs.added()); ensureSingleOccurence(trans, commitEventArgs.updated()); } private Object objectFor(Transaction trans, ObjectInfo info) { int id = (int) info.getInternalID(); HardObjectReference ref = HardObjectReference.peekPersisted(trans, id, 1); return ref._object; } }); }