private void StoreChangedObject(NonNativeObjectInfo aoi1, NonNativeObjectInfo aoi2, int fieldId,
AbstractObjectInfo oldValue, AbstractObjectInfo newValue, string message,
int objectRecursionLevel)
{
if (aoi1 == null || aoi2 == null)
{
return;
}
if (aoi1.GetOid() != null && aoi1.GetOid().Equals(aoi2.GetOid()))
{
_changedObjectMetaRepresentations.Add(aoi2);
_changes.Add(new ChangedObjectInfo(aoi1.GetClassInfo(), aoi2.GetClassInfo(), fieldId, oldValue,
newValue, message, objectRecursionLevel));
// also the max recursion level
if (objectRecursionLevel > _maxObjectRecursionLevel)
{
_maxObjectRecursionLevel = objectRecursionLevel;
}
_nbChanges++;
}
else
{
_newObjects.Add(aoi2.GetObject());
_nbChanges++;
}
}
private void StoreChangedObject(NonNativeObjectInfo
aoi1, NonNativeObjectInfo aoi2, int fieldId
, AbstractObjectInfo oldValue, AbstractObjectInfo
newValue, string message, int objectRecursionLevel)
{
if (aoi1 != null && aoi2 != null)
{
if (aoi1.GetOid() != null && aoi1.GetOid().Equals(aoi2.GetOid()))
{
changedObjectMetaRepresentations.Add(aoi2);
changes.Add(new ChangedObjectInfo(aoi1
.GetClassInfo(), aoi2.GetClassInfo(), fieldId, oldValue, newValue, message, objectRecursionLevel
));
// also the max recursion level
if (objectRecursionLevel > maxObjectRecursionLevel)
{
maxObjectRecursionLevel = objectRecursionLevel;
}
nbChanges++;
}
else
{
newObjects.Add(aoi2.GetObject());
string fieldName = aoi1.GetClassInfo().GetAttributeInfoFromId(fieldId).GetName();
// keep track of the position where the reference must be
// updated - use aoi1 to get position, because aoi2 do not have position defined yet
long positionToUpdateReference = aoi1.GetAttributeDefinitionPosition(fieldId);
StoreNewObjectReference(positionToUpdateReference, aoi2, objectRecursionLevel, fieldName
);
}
}
else
{
//newObjectMetaRepresentations.add(aoi2);
NeoDatis.Tool.DLogger.Info("Non native object with null object");
}
}
/// <summary>
/// Updates an object.
/// </summary>
/// <remarks>
/// Updates an object. <pre>Try to update in place. Only change what has changed. This is restricted to particular types (fixed size types). If in place update is
/// not possible, then deletes the current object and creates a new at the end of the database file and updates
/// OID object position.
/// @param object The object to be updated
/// @param forceUpdate when true, no verification is done to check if update must be done.
/// @return The oid of the object, as a negative number
/// @</pre>
/// </remarks>
public OID UpdateNonNativeObjectInfo(NonNativeObjectInfo nnoi, bool forceUpdate)
{
var hasObject = true;
var @object = nnoi.GetObject();
var oid = nnoi.GetOid();
if (@object == null)
{
hasObject = false;
}
// When there is index,we must *always* load the old meta representation
// to compute index keys
var withIndex = !nnoi.GetClassInfo().GetIndexes().IsEmpty();
NonNativeObjectInfo oldMetaRepresentation = null;
// Used to check consistency, at the end, the number of
// nbConnectedObjects must and nbUnconnected must remain unchanged
//TODO: why we are not using / checking that? (below is continuity)
nnoi.GetClassInfo().CommitedZoneInfo.GetNumberbOfObjects();
nnoi.GetClassInfo().UncommittedZoneInfo.GetNumberbOfObjects();
var objectHasChanged = false;
try
{
var lsession = _session;
var positionBeforeWrite = _objectWriter.FileSystemProcessor.FileSystemInterface.GetPosition();
var tmpCache = lsession.GetTmpCache();
var cache = lsession.GetCache();
// Get header of the object (position, previous object position,
// next
// object position and class info position)
// The header must be in the cache.
var lastHeader = cache.GetObjectInfoHeaderByOid(oid, true);
if (lastHeader == null)
{
throw new OdbRuntimeException(
NDatabaseError.UnexpectedSituation.AddParameter("Header is null in update"));
}
if (lastHeader.GetOid() == null)
{
throw new OdbRuntimeException(
NDatabaseError.InternalError.AddParameter("Header oid is null for oid " + oid));
}
var objectIsInConnectedZone = cache.IsInCommitedZone(oid);
var currentPosition = lastHeader.GetPosition();
if (currentPosition == -1)
{
throw new OdbRuntimeException(
NDatabaseError.InstancePositionIsNegative.AddParameter(currentPosition).AddParameter(oid).
AddParameter("In Object Info Header"));
}
// triggers,FIXME passing null to old object representation
_storageEngine.GetTriggerManager().ManageUpdateTriggerBefore(nnoi.GetClassInfo().UnderlyingType,
null, hasObject ? @object : nnoi, oid);
// Use to control if the in place update is ok. The
// ObjectInstrospector stores the number of changes
// that were detected and here we try to apply them using in place
// update.If at the end
// of the in place update the number of applied changes is smaller
// then the number
// of detected changes, then in place update was not successfully,
// we
// must do a real update,
// creating an object elsewhere :-(
if (!forceUpdate)
{
var cachedOid = cache.IdOfInsertingObject(@object);
if (cachedOid != null)
{
// The object is being inserted (must be a cyclic
// reference), simply returns id id
return(cachedOid);
}
// the nnoi (NonNativeObjectInfo is the meta representation of
// the object to update
// To know what must be upated we must get the meta
// representation of this object before
// The modification. Taking this 'old' meta representation from
// the
// cache does not resolve
// : because cache is a reference to the real object and object
// has been changed,
// so the cache is pointing to the reference, that has changed!
// This old meta representation must be re-read from the last
// committed database
// false, = returnInstance (java object) = false
try
{
var useCache = !objectIsInConnectedZone;
oldMetaRepresentation = _objectReader.ReadNonNativeObjectInfoFromPosition(null, oid,
currentPosition,
useCache, false);
tmpCache.ClearObjectInfos();
}
catch (OdbRuntimeException e)
{
var position = currentPosition.ToString();
throw new OdbRuntimeException(
NDatabaseError.InternalError.AddParameter("Error while reading old Object Info of oid " +
oid + " at pos " + position), e);
}
// Make sure we work with the last version of the object
var onDiskVersion = oldMetaRepresentation.GetHeader().GetObjectVersion();
var onDiskUpdateDate = oldMetaRepresentation.GetHeader().GetUpdateDate();
var inCacheVersion = lastHeader.GetObjectVersion();
var inCacheUpdateDate = lastHeader.GetUpdateDate();
if (onDiskUpdateDate > inCacheUpdateDate || onDiskVersion > inCacheVersion)
{
lastHeader = oldMetaRepresentation.GetHeader();
}
nnoi.SetHeader(lastHeader);
// increase the object version number from the old meta
// representation
nnoi.GetHeader().IncrementVersionAndUpdateDate();
// Keep the creation date
nnoi.GetHeader().SetCreationDate(oldMetaRepresentation.GetHeader().GetCreationDate());
// Set the object of the old meta to make the object comparator
// understand, they are 2
// meta representation of the same object
// TODO , check if if is the best way to do
oldMetaRepresentation.SetObject(nnoi.GetObject());
// Reset the comparator
_comparator.Clear();
objectHasChanged = _comparator.HasChanged(oldMetaRepresentation, nnoi);
if (!objectHasChanged)
{
_objectWriter.FileSystemProcessor.FileSystemInterface.SetWritePosition(positionBeforeWrite, true);
return(oid);
}
}
// If we reach this update, In Place Update was not possible. Do a
// normal update. Deletes the
// current object and creates a new one
if (oldMetaRepresentation == null && withIndex)
{
// We must load old meta representation to be able to compute
// old index key to update index
oldMetaRepresentation = _objectReader.ReadNonNativeObjectInfoFromPosition(null, oid, currentPosition,
false, false);
}
var previousObjectOID = lastHeader.GetPreviousObjectOID();
var nextObjectOid = lastHeader.GetNextObjectOID();
nnoi.SetPreviousInstanceOID(previousObjectOID);
nnoi.SetNextObjectOID(nextObjectOid);
// Mark the block of current object as deleted
_objectWriter.MarkAsDeleted(currentPosition, objectIsInConnectedZone);
// Creates the new object
oid = InsertNonNativeObject(oid, nnoi, false);
// This position after write must be call just after the insert!!
var positionAfterWrite = _objectWriter.FileSystemProcessor.FileSystemInterface.GetPosition();
if (hasObject)
{
// update cache
cache.AddObject(oid, @object, nnoi.GetHeader());
}
_objectWriter.FileSystemProcessor.FileSystemInterface.SetWritePosition(positionAfterWrite, true);
//TODO: why we are not using / checking that? (below is continuity)
nnoi.GetClassInfo().CommitedZoneInfo.GetNumberbOfObjects();
nnoi.GetClassInfo().UncommittedZoneInfo.GetNumberbOfObjects();
return(oid);
}
catch (Exception e)
{
var message = string.Format("Error updating object {0} : {1}", nnoi, e);
throw new OdbRuntimeException(e, message);
}
finally
{
if (objectHasChanged)
{
if (withIndex)
{
ManageIndexesForUpdate(oid, nnoi, oldMetaRepresentation);
}
// triggers,FIXME passing null to old object representation
// (oldMetaRepresentation may be null)
_storageEngine.GetTriggerManager().ManageUpdateTriggerAfter(
nnoi.GetClassInfo().UnderlyingType, oldMetaRepresentation, hasObject ? @object : nnoi, oid);
}
}
}
public virtual object BuildOneInstance(NonNativeObjectInfo objectInfo)
{
ICache cache = GetSession().GetCache();
// verify if the object is check to delete
if (objectInfo.IsDeletedObject())
{
throw new ODBRuntimeException(NeoDatisError.ObjectIsMarkedAsDeletedForOid.AddParameter(objectInfo.GetOid()));
}
// Then check if object is in cache
object o = cache.GetObjectWithOid(objectInfo.GetOid());
if (o != null)
{
return(o);
}
Type instanceClazz = null;
instanceClazz = classPool.GetClass(objectInfo.GetClassInfo().GetFullClassName());
try
{
o = classIntrospector.NewInstanceOf(instanceClazz);
}
catch (System.Exception e)
{
throw new ODBRuntimeException(NeoDatisError.InstanciationError.AddParameter(objectInfo.GetClassInfo().GetFullClassName()), e);
}
// This can happen if ODB can not create the instance
// TODO Check if returning null is correct
if (o == null)
{
return(null);
}
// 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
bool hashCodeIsOk = true;
int initialHashCode = 0;
try
{
initialHashCode = o.GetHashCode();
}
catch (System.Exception)
{
hashCodeIsOk = false;
}
// Adds this incomplete instance in the cache to manage cyclic reference
if (hashCodeIsOk)
{
cache.AddObject(objectInfo.GetOid(), o, objectInfo.GetHeader());
}
ClassInfo ci = objectInfo.GetClassInfo();
IOdbList <FieldInfo> fields = classIntrospector.GetAllFields(ci.GetFullClassName());
FieldInfo field = null;
AbstractObjectInfo aoi = null;
object value = null;
for (int i = 0; i < fields.Count; i++)
{
field = fields[i];
// Gets the id of this field
int attributeId = ci.GetAttributeId(field.Name);
if (OdbConfiguration.IsDebugEnabled(LogIdDebug))
{
DLogger.Debug("getting field with name " + field.Name + ", attribute id is " + attributeId);
}
aoi = objectInfo.GetAttributeValueFromId(attributeId);
// Check consistency
// ensureClassCompatibily(field,
// instanceInfo.getClassInfo().getAttributeinfo(i).getFullClassname());
if (aoi != null && (!aoi.IsNull()))
{
if (aoi.IsNative())
{
if (aoi.IsAtomicNativeObject())
{
if (aoi.IsNull())
{
value = null;
}
else
{
value = aoi.GetObject();
}
}
if (aoi.IsCollectionObject())
{
value = BuildCollectionInstance((CollectionObjectInfo)aoi);
// Manage a specific case of Set
/*
* if (typeof(Java.Util.Set).IsAssignableFrom(field.GetType()) && typeof(ICollection).IsAssignableFrom(value.GetType()))
* {
* Java.Util.Set s = new Java.Util.HashSet();
* s.AddAll((System.Collections.ICollection)value);
* value = s;
* }*/
}
if (aoi.IsArrayObject())
{
value = BuildArrayInstance((ArrayObjectInfo)aoi);
}
if (aoi.IsMapObject())
{
value = BuildMapInstance((MapObjectInfo)aoi);
}
if (aoi.IsEnumObject())
{
value = BuildEnumInstance((EnumNativeObjectInfo)aoi, field.FieldType);
}
}
else
{
if (aoi.IsNonNativeObject())
{
if (aoi.IsDeletedObject())
{
if (NeoDatis.Odb.OdbConfiguration.DisplayWarnings())
{
IError warning = NeoDatisError.AttributeReferencesADeletedObject
.AddParameter(objectInfo.GetClassInfo().GetFullClassName())
.AddParameter(objectInfo.GetOid()).AddParameter(field.Name);
DLogger.Info(warning.ToString());
}
value = null;
}
else
{
value = BuildOneInstance((NonNativeObjectInfo)aoi);
}
}
}
if (value != null)
{
if (OdbConfiguration.IsDebugEnabled(LogIdDebug))
{
DLogger.Debug("Setting field " + field.Name + "(" + field.GetType().FullName + ") to " + value + " / " + value.GetType().FullName);
}
try
{
field.SetValue(o, value);
}
catch (System.Exception e)
{
throw new ODBRuntimeException(NeoDatisError.InstanceBuilderWrongObjectContainerType
.AddParameter(objectInfo.GetClassInfo().GetFullClassName())
.AddParameter(value.GetType().FullName).AddParameter(field.GetType().FullName), e);
}
}
}
}
if (o != null && !OdbClassUtil.GetFullName(o.GetType()).Equals(objectInfo.GetClassInfo().GetFullClassName()))
{
new ODBRuntimeException(NeoDatisError.InstanceBuilderWrongObjectType
.AddParameter(objectInfo.GetClassInfo().GetFullClassName())
.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.RemoveObjectWithOid(objectInfo.GetOid());
// re-Adds instance in the cache
cache.AddObject(objectInfo.GetOid(), o, objectInfo.GetHeader());
}
if (triggerManager != null)
{
triggerManager.ManageSelectTriggerAfter(objectInfo.GetClassInfo().GetFullClassName
(), objectInfo, objectInfo.GetOid());
}
if (OdbConfiguration.ReconnectObjectsToSession())
{
ICrossSessionCache crossSessionCache = CacheFactory.GetCrossSessionCache(engine.GetBaseIdentification().GetIdentification());
crossSessionCache.AddObject(o, objectInfo.GetOid());
}
return(o);
}
public OID GetOid()
{
return(_nnoi.GetOid());
}
private void StoreChangedObject(NonNativeObjectInfo aoi1, NonNativeObjectInfo aoi2, int fieldId,
AbstractObjectInfo oldValue, AbstractObjectInfo newValue, string message,
int objectRecursionLevel)
{
if (aoi1 == null || aoi2 == null)
return;
if (aoi1.GetOid() != null && aoi1.GetOid().Equals(aoi2.GetOid()))
{
_changedObjectMetaRepresentations.Add(aoi2);
_changes.Add(new ChangedObjectInfo(aoi1.GetClassInfo(), aoi2.GetClassInfo(), fieldId, oldValue,
newValue, message, objectRecursionLevel));
// also the max recursion level
if (objectRecursionLevel > _maxObjectRecursionLevel)
_maxObjectRecursionLevel = objectRecursionLevel;
_nbChanges++;
}
else
{
_newObjects.Add(aoi2.GetObject());
_nbChanges++;
}
}
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);
}
/// <summary>
/// Updates an object.
/// </summary>
/// <remarks>
/// Updates an object. <pre>Try to update in place. Only change what has changed. This is restricted to particular types (fixed size types). If in place update is
/// not possible, then deletes the current object and creates a new at the end of the database file and updates
/// OID object position.
/// @param object The object to be updated
/// @param forceUpdate when true, no verification is done to check if update must be done.
/// @return The oid of the object, as a negative number
/// @</pre>
/// </remarks>
public OID UpdateNonNativeObjectInfo(NonNativeObjectInfo nnoi, bool forceUpdate)
{
var hasObject = true;
var @object = nnoi.GetObject();
var oid = nnoi.GetOid();
if (@object == null)
hasObject = false;
// When there is index,we must *always* load the old meta representation
// to compute index keys
var withIndex = !nnoi.GetClassInfo().GetIndexes().IsEmpty();
NonNativeObjectInfo oldMetaRepresentation = null;
// Used to check consistency, at the end, the number of
// nbConnectedObjects must and nbUnconnected must remain unchanged
//TODO: why we are not using / checking that? (below is continuity)
nnoi.GetClassInfo().CommitedZoneInfo.GetNumberbOfObjects();
nnoi.GetClassInfo().UncommittedZoneInfo.GetNumberbOfObjects();
var objectHasChanged = false;
try
{
var lsession = _session;
var positionBeforeWrite = _objectWriter.FileSystemProcessor.FileSystemInterface.GetPosition();
var tmpCache = lsession.GetTmpCache();
var cache = lsession.GetCache();
// Get header of the object (position, previous object position,
// next
// object position and class info position)
// The header must be in the cache.
var lastHeader = cache.GetObjectInfoHeaderByOid(oid, true);
if (lastHeader == null)
throw new OdbRuntimeException(
NDatabaseError.UnexpectedSituation.AddParameter("Header is null in update"));
if (lastHeader.GetOid() == null)
throw new OdbRuntimeException(
NDatabaseError.InternalError.AddParameter("Header oid is null for oid " + oid));
var objectIsInConnectedZone = cache.IsInCommitedZone(oid);
var currentPosition = lastHeader.GetPosition();
if (currentPosition == -1)
{
throw new OdbRuntimeException(
NDatabaseError.InstancePositionIsNegative.AddParameter(currentPosition).AddParameter(oid).
AddParameter("In Object Info Header"));
}
// triggers,FIXME passing null to old object representation
_storageEngine.GetTriggerManager().ManageUpdateTriggerBefore(nnoi.GetClassInfo().UnderlyingType,
null, hasObject ? @object : nnoi, oid);
// Use to control if the in place update is ok. The
// ObjectInstrospector stores the number of changes
// that were detected and here we try to apply them using in place
// update.If at the end
// of the in place update the number of applied changes is smaller
// then the number
// of detected changes, then in place update was not successfully,
// we
// must do a real update,
// creating an object elsewhere :-(
if (!forceUpdate)
{
var cachedOid = cache.IdOfInsertingObject(@object);
if (cachedOid != null)
{
// The object is being inserted (must be a cyclic
// reference), simply returns id id
return cachedOid;
}
// the nnoi (NonNativeObjectInfo is the meta representation of
// the object to update
// To know what must be upated we must get the meta
// representation of this object before
// The modification. Taking this 'old' meta representation from
// the
// cache does not resolve
// : because cache is a reference to the real object and object
// has been changed,
// so the cache is pointing to the reference, that has changed!
// This old meta representation must be re-read from the last
// committed database
// false, = returnInstance (java object) = false
try
{
var useCache = !objectIsInConnectedZone;
oldMetaRepresentation = _objectReader.ReadNonNativeObjectInfoFromPosition(null, oid,
currentPosition,
useCache, false);
tmpCache.ClearObjectInfos();
}
catch (OdbRuntimeException e)
{
var position = currentPosition.ToString();
throw new OdbRuntimeException(
NDatabaseError.InternalError.AddParameter("Error while reading old Object Info of oid " +
oid + " at pos " + position), e);
}
// Make sure we work with the last version of the object
var onDiskVersion = oldMetaRepresentation.GetHeader().GetObjectVersion();
var onDiskUpdateDate = oldMetaRepresentation.GetHeader().GetUpdateDate();
var inCacheVersion = lastHeader.GetObjectVersion();
var inCacheUpdateDate = lastHeader.GetUpdateDate();
if (onDiskUpdateDate > inCacheUpdateDate || onDiskVersion > inCacheVersion)
lastHeader = oldMetaRepresentation.GetHeader();
nnoi.SetHeader(lastHeader);
// increase the object version number from the old meta
// representation
nnoi.GetHeader().IncrementVersionAndUpdateDate();
// Keep the creation date
nnoi.GetHeader().SetCreationDate(oldMetaRepresentation.GetHeader().GetCreationDate());
// Set the object of the old meta to make the object comparator
// understand, they are 2
// meta representation of the same object
// TODO , check if if is the best way to do
oldMetaRepresentation.SetObject(nnoi.GetObject());
// Reset the comparator
_comparator.Clear();
objectHasChanged = _comparator.HasChanged(oldMetaRepresentation, nnoi);
if (!objectHasChanged)
{
_objectWriter.FileSystemProcessor.FileSystemInterface.SetWritePosition(positionBeforeWrite, true);
return oid;
}
}
// If we reach this update, In Place Update was not possible. Do a
// normal update. Deletes the
// current object and creates a new one
if (oldMetaRepresentation == null && withIndex)
{
// We must load old meta representation to be able to compute
// old index key to update index
oldMetaRepresentation = _objectReader.ReadNonNativeObjectInfoFromPosition(null, oid, currentPosition,
false, false);
}
var previousObjectOID = lastHeader.GetPreviousObjectOID();
var nextObjectOid = lastHeader.GetNextObjectOID();
nnoi.SetPreviousInstanceOID(previousObjectOID);
nnoi.SetNextObjectOID(nextObjectOid);
// Mark the block of current object as deleted
_objectWriter.MarkAsDeleted(currentPosition, objectIsInConnectedZone);
// Creates the new object
oid = InsertNonNativeObject(oid, nnoi, false);
// This position after write must be call just after the insert!!
var positionAfterWrite = _objectWriter.FileSystemProcessor.FileSystemInterface.GetPosition();
if (hasObject)
{
// update cache
cache.AddObject(oid, @object, nnoi.GetHeader());
}
_objectWriter.FileSystemProcessor.FileSystemInterface.SetWritePosition(positionAfterWrite, true);
//TODO: why we are not using / checking that? (below is continuity)
nnoi.GetClassInfo().CommitedZoneInfo.GetNumberbOfObjects();
nnoi.GetClassInfo().UncommittedZoneInfo.GetNumberbOfObjects();
return oid;
}
catch (Exception e)
{
var message = string.Format("Error updating object {0} : {1}", nnoi, e);
throw new OdbRuntimeException(e, message);
}
finally
{
if (objectHasChanged)
{
if (withIndex)
ManageIndexesForUpdate(oid, nnoi, oldMetaRepresentation);
// triggers,FIXME passing null to old object representation
// (oldMetaRepresentation may be null)
_storageEngine.GetTriggerManager().ManageUpdateTriggerAfter(
nnoi.GetClassInfo().UnderlyingType, oldMetaRepresentation, hasObject ? @object : nnoi, oid);
}
}
}
/// <summary>Store an object with the specific id</summary>
/// <param name="oid"></param>
/// <param name="@object"></param>
/// <returns></returns>
/// <></>
protected virtual NeoDatis.Odb.OID InternalStore(OID oid, object o)
{
if (GetSession(true).IsRollbacked())
{
throw new ODBRuntimeException(NeoDatisError.OdbHasBeenRollbacked.AddParameter(GetBaseIdentification().ToString()));
}
if (o == null)
{
throw new ODBRuntimeException(NeoDatisError.OdbCanNotStoreNullObject);
}
Type clazz = o.GetType();
if (ODBType.IsNative(clazz))
{
throw new ODBRuntimeException(NeoDatisError.OdbCanNotStoreNativeObjectDirectly
.AddParameter(clazz.FullName).AddParameter(ODBType.GetFromClass(clazz).GetName()).AddParameter(clazz.FullName));
}
// The object must be transformed into meta representation
ClassInfo ci = null;
string className = OdbClassUtil.GetFullName(clazz);
// first checks if the class of this object already exist in the
// metamodel
if (GetMetaModel().ExistClass(className))
{
ci = GetMetaModel().GetClassInfo(className, true);
}
else
{
ClassInfoList ciList = classIntrospector.Introspect(o.GetType(), true);
// All new classes found
objectWriter.AddClasses(ciList);
ci = ciList.GetMainClassInfo();
}
// first detects if we must perform an insert or an update
// If object is in the cache, we must perform an update, else an insert
bool mustUpdate = false;
ICache cache = GetSession(true).GetCache();
if (o != null)
{
OID cacheOid = cache.IdOfInsertingObject(o);
if (cacheOid != null)
{
return(cacheOid);
}
// throw new ODBRuntimeException("Inserting meta representation of
// an object without the object itself is not yet supported");
mustUpdate = cache.ExistObject(o);
}
// The introspection callback is used to execute some specific task (like calling trigger, for example) while introspecting the object
IIntrospectionCallback callback = introspectionCallbackForInsert;
if (mustUpdate)
{
callback = introspectionCallbackForUpdate;
}
// Transform the object into an ObjectInfo
NonNativeObjectInfo nnoi = (NonNativeObjectInfo)objectIntrospector.GetMetaRepresentation(o, ci, true, null, callback);
// During the introspection process, if object is to be updated, then the oid has been set
mustUpdate = nnoi.GetOid() != null;
if (mustUpdate)
{
return(objectWriter.UpdateNonNativeObjectInfo(nnoi, false));
}
return(objectWriter.InsertNonNativeObject(oid, nnoi, true));
}
private bool HasChanged(NonNativeObjectInfo nnoi1, NonNativeObjectInfo nnoi2, int objectRecursionLevel)
{
AbstractObjectInfo value1 = null;
AbstractObjectInfo value2 = null;
bool hasChanged = false;
// If the object is already being checked, return false, this second
// check will not affect the check
int n = 0;
alreadyCheckingObjects.TryGetValue(nnoi2, out n);
if (n != 0)
{
return(false);
}
// Put the object in the temporary cache
alreadyCheckingObjects[nnoi1] = 1;
alreadyCheckingObjects[nnoi2] = 1;
// Warning ID Start with 1 and not 0
for (int id = 1; id <= nnoi1.GetMaxNbattributes(); id++)
{
value1 = nnoi1.GetAttributeValueFromId(id);
// Gets the value by the attribute id to be sure
// Problem because a new object info may not have the right ids ?
// Check if
// the new oiD is ok.
value2 = nnoi2.GetAttributeValueFromId(id);
if (value2 == null)
{
// this means the object to have attribute id
StoreChangedObject(nnoi1, nnoi2, id, objectRecursionLevel);
hasChanged = true;
continue;
}
if (value1 == null)
{
//throw new ODBRuntimeException("ObjectInfoComparator.hasChanged:attribute with id "+id+" does not exist on "+nnoi2);
// This happens when this object was created with an version of ClassInfo (which has been refactored).
// In this case,we simply tell that in place update is not supported so that the object will be rewritten with
// new metamodel
supportInPlaceUpdate = false;
continue;
}
// If both are null, no effect
if (value1.IsNull() && value2.IsNull())
{
continue;
}
if (value1.IsNull() || value2.IsNull())
{
supportInPlaceUpdate = false;
hasChanged = true;
StoreActionSetAttributetoNull(nnoi1, id, objectRecursionLevel);
continue;
}
if (!ClassAreCompatible(value1, value2))
{
if (value2 is NativeObjectInfo)
{
StoreChangedObject(nnoi1, nnoi2, id, objectRecursionLevel);
StoreChangedAttributeAction(new ChangedNativeAttributeAction
(nnoi1, nnoi2, nnoi1.GetHeader().GetAttributeIdentificationFromId(id), (NativeObjectInfo
)value2, objectRecursionLevel, false, nnoi1.GetClassInfo().GetAttributeInfoFromId
(id).GetName()));
}
if (value2 is ObjectReference)
{
NonNativeObjectInfo nnoi = (NonNativeObjectInfo
)value1;
ObjectReference oref = (ObjectReference
)value2;
if (!nnoi.GetOid().Equals(oref.GetOid()))
{
StoreChangedObject(nnoi1, nnoi2, id, objectRecursionLevel);
int attributeIdThatHasChanged = id;
// this is the exact position where the object reference
// definition is stored
long attributeDefinitionPosition = nnoi2.GetAttributeDefinitionPosition(attributeIdThatHasChanged
);
StoreChangedAttributeAction(new ChangedObjectReferenceAttributeAction
(attributeDefinitionPosition, (ObjectReference
)value2, objectRecursionLevel));
}
else
{
continue;
}
}
hasChanged = true;
continue;
}
if (value1.IsAtomicNativeObject())
{
if (!value1.Equals(value2))
{
// storeChangedObject(nnoi1, nnoi2, id,
// objectRecursionLevel);
StoreChangedAttributeAction(new ChangedNativeAttributeAction
(nnoi1, nnoi2, nnoi1.GetHeader().GetAttributeIdentificationFromId(id), (NativeObjectInfo
)value2, objectRecursionLevel, false, nnoi1.GetClassInfo().GetAttributeInfoFromId
(id).GetName()));
hasChanged = true;
continue;
}
continue;
}
if (value1.IsCollectionObject())
{
CollectionObjectInfo coi1 = (CollectionObjectInfo)value1;
CollectionObjectInfo coi2 = (CollectionObjectInfo)value2;
bool collectionHasChanged = ManageCollectionChanges(nnoi1, nnoi2, id, coi1, coi2, objectRecursionLevel);
hasChanged = hasChanged || collectionHasChanged;
continue;
}
if (value1.IsArrayObject())
{
ArrayObjectInfo aoi1 = (ArrayObjectInfo)value1;
ArrayObjectInfo aoi2 = (ArrayObjectInfo)value2;
bool arrayHasChanged = ManageArrayChanges(nnoi1, nnoi2, id, aoi1, aoi2, objectRecursionLevel
);
hasChanged = hasChanged || arrayHasChanged;
continue;
}
if (value1.IsMapObject())
{
MapObjectInfo moi1 = (MapObjectInfo)value1;
MapObjectInfo moi2 = (MapObjectInfo)value2;
bool mapHasChanged = ManageMapChanges(nnoi1, nnoi2, id, moi1, moi2, objectRecursionLevel
);
hasChanged = hasChanged || mapHasChanged;
continue;
}
if (value1.IsEnumObject())
{
EnumNativeObjectInfo enoi1 = (EnumNativeObjectInfo)value1;
EnumNativeObjectInfo enoi2 = (EnumNativeObjectInfo)value2;
bool enumHasChanged = !enoi1.GetEnumClassInfo().GetId().Equals(enoi2.GetEnumClassInfo
().GetId()) || !enoi1.GetEnumName().Equals(enoi2.GetEnumName());
hasChanged = hasChanged || enumHasChanged;
continue;
}
if (value1.IsNonNativeObject())
{
NonNativeObjectInfo oi1 = (NonNativeObjectInfo)value1;
NonNativeObjectInfo oi2 = (NonNativeObjectInfo)value2;
// If oids are equal, they are the same objects
if (oi1.GetOid() != null && oi1.GetOid().Equals(oi2.GetOid()))
{
hasChanged = HasChanged(value1, value2, objectRecursionLevel + 1) || hasChanged;
}
else
{
// This means that an object reference has changed.
hasChanged = true;
// keep track of the position where the reference must be
// updated
long positionToUpdateReference = nnoi1.GetAttributeDefinitionPosition(id);
StoreNewObjectReference(positionToUpdateReference, oi2, objectRecursionLevel, nnoi1
.GetClassInfo().GetAttributeInfoFromId(id).GetName());
objectRecursionLevel++;
// Value2 may have change too
AddPendingVerification(value2);
}
continue;
}
}
int i1 = (int)alreadyCheckingObjects[nnoi1];
int i2 = (int)alreadyCheckingObjects[nnoi2];
if (i1 != null)
{
i1 = i1 - 1;
}
if (i2 != null)
{
i2 = i2 - 1;
}
if (i1 == 0)
{
alreadyCheckingObjects.Remove(nnoi1);
}
else
{
alreadyCheckingObjects.Add(nnoi1, i1);
}
if (i2 == 0)
{
alreadyCheckingObjects.Remove(nnoi2);
}
else
{
alreadyCheckingObjects.Add(nnoi2, i2);
}
return(hasChanged);
}
/// <summary>
/// Checks if something in the Collection has changed, if yes, stores the
/// change
/// </summary>
/// <param name="nnoi1">
/// The first Object meta representation (nnoi =
/// NonNativeObjectInfo)
/// </param>
/// <param name="nnoi2">The second object meta representation</param>
/// <param name="fieldIndex">The field index that this collection represents</param>
/// <param name="coi1">
/// The Meta representation of the collection 1 (coi =
/// CollectionObjectInfo)
/// </param>
/// <param name="coi2">The Meta representation of the collection 2</param>
/// <param name="objectRecursionLevel"></param>
/// <returns>true if 2 collection representation are different</returns>
private bool ManageCollectionChanges(NonNativeObjectInfo
nnoi1, NonNativeObjectInfo nnoi2, int fieldId
, CollectionObjectInfo coi1, CollectionObjectInfo
coi2, int objectRecursionLevel)
{
ICollection <AbstractObjectInfo
> collection1 = coi1.GetCollection();
ICollection <AbstractObjectInfo
> collection2 = coi2.GetCollection();
if (collection1.Count != collection2.Count)
{
System.Text.StringBuilder buffer = new System.Text.StringBuilder();
buffer.Append("Collection size has changed oldsize=").Append(collection1.Count).Append
("/newsize=").Append(collection2.Count);
StoreChangedObject(nnoi1, nnoi2, fieldId, coi1, coi2, buffer.ToString(), objectRecursionLevel
);
return(true);
}
System.Collections.IEnumerator iterator1 = collection1.GetEnumerator();
System.Collections.IEnumerator iterator2 = collection2.GetEnumerator();
AbstractObjectInfo value1 = null;
AbstractObjectInfo value2 = null;
int index = 0;
while (iterator1.MoveNext())
{
iterator2.MoveNext();
value1 = (AbstractObjectInfo)iterator1.Current;
value2 = (AbstractObjectInfo)iterator2.Current;
bool hasChanged = this.HasChanged(value1, value2, objectRecursionLevel);
if (hasChanged)
{
// We consider collection has changed only if object are
// different, If objects are the same instance, but something in
// the object has changed, then the collection has not
// changed,only the object
if (value1.IsNonNativeObject() && value2.IsNonNativeObject())
{
NonNativeObjectInfo nnoia = (NonNativeObjectInfo
)value1;
NonNativeObjectInfo nnoib = (NonNativeObjectInfo
)value2;
if (nnoia.GetOid() != null && !nnoia.GetOid().Equals(nnoi2.GetOid()))
{
// Objects are not the same instance -> the collection
// has changed
StoreChangedObject(nnoi1, nnoi2, fieldId, value1, value2, "List element index " +
index + " has changed", objectRecursionLevel);
}
}
else
{
supportInPlaceUpdate = false;
nbChanges++;
}
//storeChangedObject(nnoi1, nnoi2, fieldId, value1, value2, "List element index " + index + " has changed", objectRecursionLevel);
return(true);
}
index++;
}
return(false);
}
