protected virtual async Task ExecuteBatchAsync(
[NotNull] ModificationCommandBatch commandBatch,
CancellationToken cancellationToken = default(CancellationToken))
{
Check.NotNull(commandBatch, "commandBatch");
// TODO: It is likely the code below won't really work correctly in the wild because
// we currently don't actually create batches of commands and because there is no mechanism
// for getting back affected rows for update/delete commands. Leaving the code here right now
// because it might be a decent starting point for a real implementation.
using (var storeCommand = CreateStoreCommand(Connection.DbConnection, commandBatch))
{
var modificationCommands = commandBatch.ModificationCommands;
using (var reader = await storeCommand.ExecuteReaderAsync(cancellationToken).ConfigureAwait(false))
{
var commandIndex = -1;
do
{
commandIndex++;
var tableModification = modificationCommands[commandIndex];
if (await reader.ReadAsync(cancellationToken).ConfigureAwait(false))
{
if (!tableModification.RequiresResultPropagation)
{
throw new DbUpdateConcurrencyException(string.Format(Strings.FormatUpdateConcurrencyException(0, 1)));
}
tableModification.PropagateResults(new RelationalTypedValueReader(reader));
if (await reader.ReadAsync(cancellationToken).ConfigureAwait(false))
{
throw new DbUpdateException(Strings.TooManyRowsForModificationCommand);
}
}
else
{
if (tableModification.RequiresResultPropagation)
{
throw new DbUpdateConcurrencyException(string.Format(Strings.FormatUpdateConcurrencyException(1, 0)));
}
}
}while (await reader.NextResultAsync(cancellationToken).ConfigureAwait(false));
}
}
}
public virtual bool AddCommand(
ModificationCommandBatch modificationCommandBatch,
ModificationCommand modificationCommand)
=> Check.NotNull(modificationCommandBatch, nameof(modificationCommandBatch))
.AddCommand(Check.NotNull(modificationCommand, nameof(modificationCommand)));
public virtual bool AddCommand(
ModificationCommandBatch modificationCommandBatch,
ModificationCommand modificationCommand)
=> Check.NotNull(modificationCommandBatch, nameof(modificationCommandBatch))
.AddCommand(Check.NotNull(modificationCommand, nameof(modificationCommand)));
