public virtual IEnumerable <CommandPart> CreatePersistParts(SqlPersistTask task, string parameterNamePrefix)
{
ArgumentValidator.EnsureArgumentNotNull(task, "task");
ArgumentValidator.EnsureArgumentNotNullOrEmpty(parameterNamePrefix, "parameterNamePrefix");
var result = new List <CommandPart>();
int parameterIndex = 0;
foreach (var request in task.RequestSequence)
{
var tuple = task.Tuple;
var compilationResult = request.GetCompiledStatement();
var configuration = new SqlPostCompilerConfiguration();
var part = new CommandPart();
foreach (var binding in request.ParameterBindings)
{
var parameterValue = GetParameterValue(task, binding);
if (binding.BindingType == PersistParameterBindingType.VersionFilter && IsHandledLikeNull(parameterValue))
{
configuration.AlternativeBranches.Add(binding);
}
else
{
var parameterName = GetParameterName(parameterNamePrefix, ref parameterIndex);
configuration.PlaceholderValues.Add(binding, Driver.BuildParameterReference(parameterName));
AddParameter(part, binding, parameterName, parameterValue);
}
}
part.Statement = compilationResult.GetCommandText(configuration);
result.Add(part);
}
return(result);
}
private void ProcessUnbatchedTask(SqlPersistTask task, CommandProcessorContext context)
{
if (context.ActiveCommand.Count > 0)
{
context.ActiveCommand.ExecuteNonQuery();
ReleaseCommand(context);
AllocateCommand(context);
}
ExecuteUnbatchedTask(task);
}
private object GetParameterValue(SqlPersistTask task, PersistParameterBinding binding)
{
switch (binding.BindingType)
{
case PersistParameterBindingType.Regular:
return(task.Tuple.GetValueOrDefault(binding.FieldIndex));
case PersistParameterBindingType.VersionFilter:
return(task.OriginalTuple.GetValueOrDefault(binding.FieldIndex));
default:
throw new ArgumentOutOfRangeException("binding.Source");
}
}
void ISqlTaskProcessor.ProcessTask(SqlPersistTask task, CommandProcessorContext context)
{
if (task.ValidateRowCount)
{
ProcessUnbatchedTask(task, context);
return;
}
var sequence = Factory.CreatePersistParts(task, GetParameterPrefix(context));
foreach (var part in sequence)
{
context.ActiveCommand.AddPart(part);
}
}
private void ExecuteUnbatchedTask(SqlPersistTask task)
{
var sequence = Factory.CreatePersistParts(task);
foreach (var part in sequence)
{
using (var command = Factory.CreateCommand()) {
command.AddPart(part);
var affectedRowsCount = command.ExecuteNonQuery();
if (affectedRowsCount == 0)
{
throw new VersionConflictException(string.Format(
Strings.ExVersionOfEntityWithKeyXDiffersFromTheExpectedOne, task.EntityKey));
}
}
}
}
void ISqlTaskProcessor.ProcessTask(SqlPersistTask task, CommandProcessorContext context)
{
if (task.ValidateRowCount)
{
ProcessUnbatchedTask(task, context);
context.CurrentTask = null;
return;
}
var sequence = Factory.CreatePersistParts(task, GetParameterPrefix(context)).ToChainedBuffer();
if (PendCommandParts(context.ActiveCommand, sequence))
{
// higly recommended to no tear apart persist actions if they are batchable
return;
}
foreach (var part in sequence)
{
context.ActiveCommand.AddPart(part);
}
context.CurrentTask = null;
}
void ISqlTaskProcessor.ProcessTask(SqlPersistTask task, CommandProcessorContext context)
{
var sequence = Factory.CreatePersistParts(task);
foreach (var part in sequence)
{
try {
context.ActiveCommand.AddPart(part);
var affectedRowsCount = context.ActiveCommand.ExecuteNonQuery();
if (task.ValidateRowCount && affectedRowsCount == 0)
{
throw new VersionConflictException(string.Format(
Strings.ExVersionOfEntityWithKeyXDiffersFromTheExpectedOne, task.EntityKey));
}
}
finally {
context.ActiveCommand.DisposeSafely();
ReleaseCommand(context);
AllocateCommand(context);
}
}
}
public IEnumerable <CommandPart> CreatePersistParts(SqlPersistTask task)
{
return(CreatePersistParts(task, DefaultParameterNamePrefix));
}
