/// <summary>
/// bulk save sliced child change actions
/// </summary>
/// <param name="page">a page/slice of child change actions</param>
internal void BatchSaveChangeActions(IList <IMigrationAction> page)
{
Debug.Assert(m_runTimeChangeGroup != null);
const int bulkChangeActionInsertionSize = 1000;
int changeActionCount = 0;
int pageIndex = 0;
while (pageIndex < page.Count)
{
using (RuntimeEntityModel context = RuntimeEntityModel.CreateInstance())
{
RTChangeGroup rtChangeGroupCache = getNativeRTChangeGroup(context);
Debug.Assert(null != rtChangeGroupCache);
while (pageIndex < page.Count && changeActionCount < bulkChangeActionInsertionSize)
{
SqlMigrationAction action = page[pageIndex] as SqlMigrationAction;
Debug.Assert(null != action);
// cache "Dirty" flag, as assignin 'this' to its ChangeGroup will set the flag to true
bool actionWasDirty = action.IsDirty;
action.ChangeGroup = this;
if (!action.IsPersisted)
{
IMigrationItemSerializer serializer = ManagerWithMigrationItemSerializers[action.Action];
action.CreateNew(serializer);
context.AddToRTChangeActionSet(action.RTChangeAction);
action.RTChangeAction.ChangeGroup = rtChangeGroupCache;
++changeActionCount;
}
else if (actionWasDirty)
{
IMigrationItemSerializer serializer = ManagerWithMigrationItemSerializers[action.Action];
RTChangeAction rtChangeAction = action.RTChangeAction;
if (null != rtChangeAction)
{
rtChangeAction = context.GetObjectByKey(rtChangeAction.EntityKey) as RTChangeAction;
}
else
{
rtChangeAction = context.RTChangeActionSet.Where(ca => ca.ChangeActionId == action.ActionId).First();
}
rtChangeAction.Recursivity = action.Recursive;
rtChangeAction.IsSubstituted = action.State == ActionState.Skipped ? true : false;
rtChangeAction.ActionId = action.Action;
rtChangeAction.SourceItem = serializer.SerializeItem(action.SourceItem);
rtChangeAction.ToPath = action.Path;
rtChangeAction.ItemTypeReferenceName = action.ItemTypeReferenceName;
rtChangeAction.FromPath = action.FromPath;
rtChangeAction.Version = action.Version;
rtChangeAction.MergeVersionTo = action.MergeVersionTo;
if (action.MigrationActionDescription != null &&
action.MigrationActionDescription.DocumentElement != null)
{
rtChangeAction.ActionData = action.MigrationActionDescription.DocumentElement.OuterXml;
}
++changeActionCount;
}
++pageIndex;
}
context.TrySaveChanges();
changeActionCount = 0;
}
}
}
protected override void Create()
{
// ToDo
ChangeStatus targetStatus = Status;
SqlChangeGroupManager manager = this.Manager as SqlChangeGroupManager;
Debug.Assert(null != manager, "Manager is not a SqlChangeGroupManager for SqlChangeGroup");
// save the group (without child actions)
SavePartialChangeGroup();
// bulk save sliced child change actions
const int bulkChangeActionInsertionSize = 1000;
int changeActionCount = 0;
while (Actions.Count > 0)
{
using (RuntimeEntityModel context = RuntimeEntityModel.CreateInstance())
{
try
{
context.Attach(m_runTimeChangeGroup);
while (Actions.Count > 0 && changeActionCount < bulkChangeActionInsertionSize)
{
SqlMigrationAction action = Actions[0] as SqlMigrationAction;
Debug.Assert(null != action);
action.ChangeGroup = this;
IMigrationItemSerializer serializer = ManagerWithMigrationItemSerializers[action.Action];
action.CreateNew(serializer);
action.RTChangeAction.ChangeGroup = m_runTimeChangeGroup;
// Remove processed child change actions.
// When this ObjectModel context is disposed,
// the RTChangeAction will be disposed as well.
Actions.RemoveAt(0);
++changeActionCount;
}
context.TrySaveChanges();
}
finally
{
context.Detach(m_runTimeChangeGroup);
}
}
changeActionCount = 0;
}
// update group status in DB
using (RuntimeEntityModel context = RuntimeEntityModel.CreateInstance())
{
try
{
context.Attach(m_runTimeChangeGroup);
m_runTimeChangeGroup.Status = (int)targetStatus;
m_runTimeChangeGroup.UsePagedActions = m_usePagedActions;
context.TrySaveChanges();
}
finally
{
context.Detach(m_runTimeChangeGroup);
}
}
}