internal static IOdbComparable BuildIndexKey(string indexName, NonNativeObjectInfo oi, int[] fieldIds) { var keys = new IOdbComparable[fieldIds.Length]; for (var i = 0; i < fieldIds.Length; i++) { try { var aoi = oi.GetAttributeValueFromId(fieldIds[i]); var item = (IComparable) aoi.GetObject(); // If the index is on NonNativeObjectInfo, then the key is the oid of the object if (aoi.IsNonNativeObject()) { var nnoi = (NonNativeObjectInfo) aoi; item = nnoi.GetOid(); } keys[i] = new SimpleCompareKey(item); } catch (Exception) { throw new OdbRuntimeException( NDatabaseError.IndexKeysMustImplementComparable.AddParameter(indexName).AddParameter(fieldIds[i]).AddParameter( oi.GetAttributeValueFromId(fieldIds[i]).GetType().FullName)); } } return keys.Length == 1 ? keys[0] : new ComposedCompareKey(keys); }
public object BuildOneInstance(NonNativeObjectInfo objectInfo, IOdbCache cache) { // verify if the object is check to delete if (objectInfo.IsDeletedObject()) throw new OdbRuntimeException( NDatabaseError.ObjectIsMarkedAsDeletedForOid.AddParameter(objectInfo.GetOid())); // Then check if object is in cache var o = cache.GetObject(objectInfo.GetOid()); if (o != null) return o; try { o = FormatterServices.GetUninitializedObject(objectInfo.GetClassInfo().UnderlyingType); } catch (Exception e) { throw new OdbRuntimeException( NDatabaseError.InstanciationError.AddParameter(objectInfo.GetClassInfo().FullClassName), e); } // This can happen if ODB can not create the instance from security reasons if (o == null) throw new OdbRuntimeException( NDatabaseError.InstanciationError.AddParameter(objectInfo.GetClassInfo().FullClassName)); // Keep the initial hash code. In some cases, when the class redefines // the hash code method // Hash code can return wrong values when attributes are not set (when // hash code depends on attribute values) // Hash codes are used as the key of the map, // So at the end of this method, if hash codes are different, object // will be removed from the cache and inserted back var hashCodeIsOk = true; var initialHashCode = 0; try { initialHashCode = o.GetHashCode(); } catch { hashCodeIsOk = false; } // Adds this incomplete instance in the cache to manage cyclic reference if (hashCodeIsOk) cache.AddObject(objectInfo.GetOid(), o, objectInfo.GetHeader()); var classInfo = objectInfo.GetClassInfo(); var fields = ClassIntrospector.GetAllFieldsFrom(classInfo.UnderlyingType); object value = null; foreach (var fieldInfo in fields) { // Gets the id of this field var attributeId = classInfo.GetAttributeId(fieldInfo.Name); if (OdbConfiguration.IsLoggingEnabled()) DLogger.Debug(string.Concat("InstanceBuilder: ", "getting field with name ", fieldInfo.Name, ", attribute id is ", attributeId.ToString())); var abstractObjectInfo = objectInfo.GetAttributeValueFromId(attributeId); // Check consistency // ensureClassCompatibily(field, // instanceInfo.getClassInfo().getAttributeinfo(i).getFullClassname()); if (abstractObjectInfo == null || (abstractObjectInfo.IsNull())) continue; if (abstractObjectInfo.IsNative()) { if (abstractObjectInfo.IsAtomicNativeObject()) { value = abstractObjectInfo.IsNull() ? null : abstractObjectInfo.GetObject(); } if (abstractObjectInfo.IsArrayObject()) value = BuildArrayInstance((ArrayObjectInfo) abstractObjectInfo); if (abstractObjectInfo.IsEnumObject()) value = BuildEnumInstance((EnumNativeObjectInfo) abstractObjectInfo, fieldInfo.FieldType); } else { if (abstractObjectInfo.IsNonNativeObject()) { if (abstractObjectInfo.IsDeletedObject()) { if (OdbConfiguration.IsLoggingEnabled()) { var warning = NDatabaseError.AttributeReferencesADeletedObject.AddParameter( objectInfo.GetClassInfo().FullClassName).AddParameter( objectInfo.GetOid()).AddParameter(fieldInfo.Name); DLogger.Warning("InstanceBuilder: " + warning); } value = null; } else value = BuildOneInstance((NonNativeObjectInfo) abstractObjectInfo); } } if (value == null) continue; if (OdbConfiguration.IsLoggingEnabled()) { DLogger.Debug(String.Format("InstanceBuilder: Setting field {0}({1}) to {2} / {3}", fieldInfo.Name, fieldInfo.GetType().FullName, value, value.GetType().FullName)); } try { fieldInfo.SetValue(o, value); } catch (Exception e) { throw new OdbRuntimeException( NDatabaseError.InstanceBuilderWrongObjectContainerType.AddParameter( objectInfo.GetClassInfo().FullClassName).AddParameter(value.GetType().FullName) .AddParameter(fieldInfo.GetType().FullName), e); } } if (o.GetType() != objectInfo.GetClassInfo().UnderlyingType) { throw new OdbRuntimeException( NDatabaseError.InstanceBuilderWrongObjectType.AddParameter( objectInfo.GetClassInfo().FullClassName).AddParameter(o.GetType().FullName)); } if (hashCodeIsOk || initialHashCode != o.GetHashCode()) { // Bug (sf bug id=1875544 )detected by glsender // This can happen when an object has redefined its own hashcode // method and depends on the field values // Then, we have to remove object from the cache and re-insert to // correct map hash code cache.RemoveObjectByOid(objectInfo.GetOid()); // re-Adds instance in the cache cache.AddObject(objectInfo.GetOid(), o, objectInfo.GetHeader()); } if (_triggerManager != null) _triggerManager.ManageSelectTriggerAfter(objectInfo.GetClassInfo().UnderlyingType, o, objectInfo.GetOid()); return o; }
private OID WriteNonNativeObjectInfo(OID existingOid, NonNativeObjectInfo objectInfo, long position, bool writeDataInTransaction, bool isNewObject) { var lsession = _session; var cache = lsession.GetCache(); var hasObject = objectInfo.GetObject() != null; // Checks if object is null,for null objects,there is nothing to do if (objectInfo.IsNull()) return StorageEngineConstant.NullObjectId; var metaModel = lsession.GetMetaModel(); // first checks if the class of this object already exist in the // metamodel if (!metaModel.ExistClass(objectInfo.GetClassInfo().UnderlyingType)) _objectWriter.AddClass(objectInfo.GetClassInfo(), true); // if position is -1, gets the position where to write the object if (position == -1) { // Write at the end of the file position = _objectWriter.FileSystemProcessor.FileSystemInterface.GetAvailablePosition(); // Updates the meta object position objectInfo.SetPosition(position); } // Gets the object id var oid = existingOid; if (oid == null) { // If, to get the next id, a new id block must be created, then // there is an extra work // to update the current object position if (_objectWriter.GetIdManager().MustShift()) { oid = _objectWriter.GetIdManager().GetNextObjectId(position); // The id manager wrote in the file so the position for the // object must be re-computed position = _objectWriter.FileSystemProcessor.FileSystemInterface.GetAvailablePosition(); // The oid must be associated to this new position - id // operations are always out of transaction // in this case, the update is done out of the transaction as a // rollback won t need to // undo this. We are just creating the id // => third parameter(write in transaction) = false _objectWriter.GetIdManager().UpdateObjectPositionForOid(oid, position, false); } else oid = _objectWriter.GetIdManager().GetNextObjectId(position); } else { // If an oid was passed, it is because object already exist and // is being updated. So we // must update the object position // Here the update of the position of the id must be done in // transaction as the object // position of the id is being updated, and a rollback should undo // this // => third parameter(write in transaction) = true _objectWriter.GetIdManager().UpdateObjectPositionForOid(oid, position, true); // Keep the relation of id and position in the cache until the // commit cache.SavePositionOfObjectWithOid(oid, position); } // Sets the oid of the object in the inserting cache cache.UpdateIdOfInsertingObject(objectInfo.GetObject(), oid); // Only add the oid to unconnected zone if it is a new object if (isNewObject) cache.AddOIDToUnconnectedZone(oid); objectInfo.SetOid(oid); if (objectInfo.GetClassInfo() == null || objectInfo.GetClassInfo().ClassInfoId == null) { if (objectInfo.GetClassInfo() != null) { var clinfo = _storageEngine.GetSession().GetMetaModel().GetClassInfo( objectInfo.GetClassInfo().FullClassName, true); objectInfo.SetClassInfo(clinfo); } else throw new OdbRuntimeException(NDatabaseError.UndefinedClassInfo.AddParameter(objectInfo.ToString())); } // updates the meta model - If class already exist, it returns the // metamodel class, which contains // a bit more informations var classInfo = _objectWriter.AddClass(objectInfo.GetClassInfo(), true); objectInfo.SetClassInfo(classInfo); // if (isNewObject) _objectWriter.ManageNewObjectPointers(objectInfo, classInfo); _objectWriter.FileSystemProcessor.FileSystemInterface.SetWritePosition(position, writeDataInTransaction); objectInfo.SetPosition(position); var nbAttributes = objectInfo.GetClassInfo().Attributes.Count; // compute the size of the array of byte needed till the attibute // positions // BlockSize + Block Type + OID + ClassOid + PrevOid + NextOid + CreatDate + UpdateDate + objectVersion + NbAttributes + RefCoutner + IsRoot // Int + Byte + Long + Long + Long + Long + Long + Long + int + int + long + byte // 6 Longs + 3Ints + Byte var tsize = 7 * OdbType.SizeOfLong + 3 * OdbType.SizeOfInt + 2 * OdbType.SizeOfByte; var bytes = new byte[tsize]; // Block size IntToByteArray(0, bytes, 0); // Block type bytes[4] = BlockTypes.BlockTypeNonNativeObject; // The object id EncodeOid(oid, bytes, 5); // Class info id LongToByteArray(classInfo.ClassInfoId.ObjectId, bytes, 13); // previous instance EncodeOid(objectInfo.GetPreviousObjectOID(), bytes, 21); // next instance EncodeOid(objectInfo.GetNextObjectOID(), bytes, 29); // creation date, for update operation must be the original one LongToByteArray(objectInfo.GetHeader().GetCreationDate(), bytes, 37); LongToByteArray(OdbTime.GetCurrentTimeInTicks(), bytes, 45); IntToByteArray(objectInfo.GetHeader().GetObjectVersion(), bytes, 53); LongToByteArray(objectInfo.GetHeader().RefCounter, bytes, 57); BooleanToByteArray(objectInfo.GetHeader().IsRoot, bytes, 65); // now write the number of attributes and the position of all // attributes, we do not know them yet, so write 00 but at the end of the write operation // These positions will be updated The positions that is going to be written are 'int' representing // the offset position of the attribute first write the number of attributes IntToByteArray(nbAttributes, bytes, 66); // Then write the array of bytes _objectWriter.FileSystemProcessor.FileSystemInterface.WriteBytes(bytes, writeDataInTransaction); // Store the position var attributePositionStart = _objectWriter.FileSystemProcessor.FileSystemInterface.GetPosition(); var attributeSize = OdbType.SizeOfInt + OdbType.SizeOfLong; var abytes = new byte[nbAttributes * (attributeSize)]; // here, just write an empty (0) array, as real values will be set at // the end _objectWriter.FileSystemProcessor.FileSystemInterface.WriteBytes(abytes, writeDataInTransaction); var attributesIdentification = new long[nbAttributes]; var attributeIds = new int[nbAttributes]; // Puts the object info in the cache // storageEngine.getSession().getCache().addObject(position, // aoi.getObject(), objectInfo.getHeader()); var maxWritePosition = _objectWriter.FileSystemProcessor.FileSystemInterface.GetPosition(); // Loop on all attributes for (var i = 0; i < nbAttributes; i++) { // Gets the attribute meta description var classAttributeInfo = classInfo.GetAttributeInfo(i); // Gets the id of the attribute attributeIds[i] = classAttributeInfo.GetId(); // Gets the attribute data var aoi2 = objectInfo.GetAttributeValueFromId(classAttributeInfo.GetId()); if (aoi2 == null) { // This only happens in 1 case : when a class has a field with // the same name of one of is superclass. In this, the deeper // attribute is null if (classAttributeInfo.IsNative()) aoi2 = new NullNativeObjectInfo(classAttributeInfo.GetAttributeType().Id); else aoi2 = new NonNativeNullObjectInfo(classAttributeInfo.GetClassInfo()); } if (aoi2.IsNative()) { var nativeAttributePosition = _objectWriter.InternalStoreObject((NativeObjectInfo)aoi2); // For native objects , odb stores their position attributesIdentification[i] = nativeAttributePosition; } else { OID nonNativeAttributeOid; if (aoi2.IsObjectReference()) { var or = (ObjectReference)aoi2; nonNativeAttributeOid = or.GetOid(); } else nonNativeAttributeOid = _objectWriter.StoreObject(null, (NonNativeObjectInfo)aoi2); // For non native objects , odb stores its oid as a negative // number!!u if (nonNativeAttributeOid != null) attributesIdentification[i] = -nonNativeAttributeOid.ObjectId; else attributesIdentification[i] = StorageEngineConstant.NullObjectIdId; } var p = _objectWriter.FileSystemProcessor.FileSystemInterface.GetPosition(); if (p > maxWritePosition) maxWritePosition = p; } // Updates attributes identification in the object info header objectInfo.GetHeader().SetAttributesIdentification(attributesIdentification); objectInfo.GetHeader().SetAttributesIds(attributeIds); var positionAfterWrite = maxWritePosition; // Now writes back the attribute positions _objectWriter.FileSystemProcessor.FileSystemInterface.SetWritePosition(attributePositionStart, writeDataInTransaction); abytes = new byte[attributesIdentification.Length * (attributeSize)]; for (var i = 0; i < attributesIdentification.Length; i++) { IntToByteArray(attributeIds[i], abytes, i * attributeSize); LongToByteArray(attributesIdentification[i], abytes, i * (attributeSize) + OdbType.SizeOfInt); // fsi.writeInt(attributeIds[i], writeDataInTransaction, "attr id"); // fsi.writeLong(attributesIdentification[i], // writeDataInTransaction, "att real pos", // WriteAction.DATA_WRITE_ACTION); // if (classInfo.getAttributeInfo(i).isNonNative() && // attributesIdentification[i] > 0) { if (objectInfo.GetAttributeValueFromId(attributeIds[i]).IsNonNativeObject() && attributesIdentification[i] > 0) { throw new OdbRuntimeException( NDatabaseError.NonNativeAttributeStoredByPositionInsteadOfOid.AddParameter( classInfo.GetAttributeInfo(i).GetName()).AddParameter(classInfo.FullClassName). AddParameter(attributesIdentification[i])); } } _objectWriter.FileSystemProcessor.FileSystemInterface.WriteBytes(abytes, writeDataInTransaction); _objectWriter.FileSystemProcessor.FileSystemInterface.SetWritePosition(positionAfterWrite, writeDataInTransaction); var blockSize = (int)(positionAfterWrite - position); WriteBlockSizeAt(position, blockSize, writeDataInTransaction, objectInfo); // Only insert in index for new objects if (isNewObject) { // insert object id in indexes, if exist _objectWriter.ManageIndexesForInsert(oid, objectInfo); var value = hasObject ? objectInfo.GetObject() : objectInfo; _triggerManager.ManageInsertTriggerAfter(objectInfo.GetClassInfo().UnderlyingType, value, oid); } return oid; }