private async Task <bool> ValidateRows(CRUDContext <TService> ctx, ChangeSetRequest changeSet, RunTimeMetadata metadata, IEnumerable <RowInfo> rows)
{
TService service = ctx.Service;
IServiceOperationsHelper <TService> serviceHelper = ctx.ServiceContainer.GetServiceHelper();
foreach (RowInfo rowInfo in rows)
{
RequestContext req = CRUDContext <TService> .CreateRequestContext(service, changeSet, rowInfo);
using (RequestCallContext callContext = new RequestCallContext(req))
{
if (!await serviceHelper.ValidateEntity(metadata, req))
{
rowInfo.invalid = rowInfo.GetChangeState().ValidationErrors;
return(false);
}
}
}
return(true);
}
protected async Task <bool> ApplyChangeSet(ChangeSet changeSet)
{
AuthorizeChangeSet(changeSet);
var metadata = MetadataHelper.GetInitializedMetadata(this);
var graph = new ChangeSetGraph(changeSet, metadata);
graph.Prepare();
foreach (var rowInfo in graph.insertList)
{
var dbSet = changeSet.dbSets.Where(d => d.dbSetName == rowInfo.dbSetInfo.dbSetName).Single();
var req = new RequestContext(this, changeSet: changeSet, dbSet: dbSet, rowInfo: rowInfo,
operation: ServiceOperationType.SaveChanges);
using (var callContext = new RequestCallContext(req))
{
rowInfo.changeState = new EntityChangeState {
ParentRows = graph.GetParents(rowInfo)
};
ApplyChangesToEntity(rowInfo);
}
}
foreach (var rowInfo in graph.updateList)
{
var dbSet = changeSet.dbSets.Where(d => d.dbSetName == rowInfo.dbSetInfo.dbSetName).Single();
var req = new RequestContext(this, changeSet: changeSet, dbSet: dbSet, rowInfo: rowInfo,
operation: ServiceOperationType.SaveChanges);
using (var callContext = new RequestCallContext(req))
{
rowInfo.changeState = new EntityChangeState();
ApplyChangesToEntity(rowInfo);
}
}
foreach (var rowInfo in graph.deleteList)
{
var dbSet = changeSet.dbSets.Where(d => d.dbSetName == rowInfo.dbSetInfo.dbSetName).Single();
var req = new RequestContext(this, changeSet: changeSet, dbSet: dbSet, rowInfo: rowInfo,
operation: ServiceOperationType.SaveChanges);
using (var callContext = new RequestCallContext(req))
{
rowInfo.changeState = new EntityChangeState();
ApplyChangesToEntity(rowInfo);
}
}
var hasErrors = false;
//Validation step
foreach (var rowInfo in graph.insertList)
{
var dbSet = changeSet.dbSets.Where(d => d.dbSetName == rowInfo.dbSetInfo.dbSetName).Single();
var req = new RequestContext(this, changeSet: changeSet, dbSet: dbSet, rowInfo: rowInfo,
operation: ServiceOperationType.SaveChanges);
using (var callContext = new RequestCallContext(req))
{
if (!await _serviceHelper.ValidateEntity(metadata, req).ConfigureAwait(false))
{
rowInfo.invalid = rowInfo.changeState.ValidationErrors;
hasErrors = true;
}
}
}
//Validation step
foreach (var rowInfo in graph.updateList)
{
var dbSet = changeSet.dbSets.Where(d => d.dbSetName == rowInfo.dbSetInfo.dbSetName).Single();
var req = new RequestContext(this, changeSet: changeSet, dbSet: dbSet, rowInfo: rowInfo,
operation: ServiceOperationType.SaveChanges);
using (var callContext = new RequestCallContext(req))
{
if (!await _serviceHelper.ValidateEntity(metadata, req).ConfigureAwait(false))
{
rowInfo.invalid = rowInfo.changeState.ValidationErrors;
hasErrors = true;
}
}
}
if (hasErrors)
{
return(false);
}
var reqCntxt = new RequestContext(this, changeSet: changeSet, operation: ServiceOperationType.SaveChanges);
using (var callContext = new RequestCallContext(reqCntxt))
{
await ExecuteChangeSet().ConfigureAwait(false);
foreach (var rowInfo in graph.allList)
{
if (rowInfo.changeType != ChangeType.Deleted)
{
_serviceHelper.UpdateRowInfoAfterUpdates(rowInfo);
}
else
{
rowInfo.values = null;
}
}
//Track changes step
foreach (var rowInfo in graph.allList)
{
TrackChangesToEntity(rowInfo);
}
}
//OK, All updates are commited
return(true);
}