T IQueryExecutor.ExecuteScalar <T>(QueryModel queryModel)
{
if (queryModel.ResultOperators.OfType <AnyResultOperator>().Any())
{
var storage = _schema.StorageFor(queryModel.SelectClause.Selector.Type);
var anyCommand = storage.AnyCommand(queryModel);
return(_runner.Execute(conn =>
{
anyCommand.Connection = conn;
return (T)anyCommand.ExecuteScalar();
}));
}
if (queryModel.ResultOperators.OfType <CountResultOperator>().Any())
{
var storage = _schema.StorageFor(queryModel.SelectClause.Selector.Type);
var countCommand = storage.CountCommand(queryModel);
return(_runner.Execute(conn =>
{
countCommand.Connection = conn;
var returnValue = countCommand.ExecuteScalar();
return Convert.ToInt32(returnValue).As <T>();
}));
}
throw new NotSupportedException();
}
public void DeleteEntity <T>(T entity)
{
var id = _schema.StorageFor(typeof(T)).Identity(entity);
var list = _deletes.GetOrAdd(typeof(T), _ => new List <PendingDeletion>());
list.Add(new PendingDeletion(typeof(T), id, entity));
}
private string findJsonById <T>(object id)
{
var storage = _schema.StorageFor(typeof(T));
var loader = storage.LoaderCommand(id);
return(_connection.Execute(loader, c => loader.ExecuteScalar() as string));
}
public void Delete <T>(T entity)
{
if (entity == null)
{
throw new ArgumentNullException(nameof(entity));
}
_unitOfWork.DeleteEntity(entity);
var storage = _schema.StorageFor(typeof(T));
storage.Remove(_identityMap, entity);
}
public when_deriving_the_table_definition_from_the_database_schema_Tests()
{
_schema = theStore.Schema;
theMapping = _schema.MappingFor(typeof(User)).As<DocumentMapping>();
theMapping.DuplicateField("UserName");
_storage = _schema.StorageFor(typeof(User));
theDerivedTable = _schema.DbObjects.TableSchema(theMapping);
}
public when_deriving_the_table_definition_from_the_database_schema_Tests()
{
_schema = theStore.Schema;
theMapping = _schema.MappingFor(typeof(User)).As <DocumentMapping>();
theMapping.DuplicateField("UserName");
_storage = _schema.StorageFor(typeof(User));
theDerivedTable = _schema.DbObjects.TableSchema(theMapping);
}
public Guid StartStream <T>(params IEvent[] events) where T : IAggregate
{
// TODO --- temp!
var streamStorage = _schema.StorageFor(typeof(Stream <T>)) as IAggregateStorage;
var stream = Guid.NewGuid();
events.Each(@event =>
{
var mapping = _schema.Events.EventMappingFor(@event.GetType());
appendEvent(mapping, stream, @event, streamStorage.StreamTypeName);
});
return(stream);
}
private Action <TInclude> GetJoinDictionaryCallback <TKey, TInclude>(PropertyInfo property, IncludeResultOperator @operator, ICompiledQuery <TDoc, TOut> query)
{
var queryProperty = GetPropertyInfo(property, @operator);
var storage = _schema.StorageFor(typeof(TInclude));
var dictionary = (IDictionary <TKey, TInclude>)(queryProperty).GetValue(query);
if (dictionary == null)
{
queryProperty.SetValue(query, new Dictionary <TKey, TInclude>());
dictionary = (IDictionary <TKey, TInclude>)queryProperty.GetValue(query);
}
return(x => {
var id = storage.Identity(x).As <TKey>();
if (!dictionary.ContainsKey(id))
{
dictionary.Add(id, x);
}
});
}
private Task <T> load <T>(object id) where T : class
{
if (_identityMap.Has <T>(id))
{
return(Task.FromResult(_identityMap.Retrieve <T>(id)));
}
var source = new TaskCompletionSource <T>();
var mapping = _schema.MappingFor(typeof(T));
var parameter = _command.AddParameter(id);
_command.AppendQuery(
$"select {mapping.SelectFields("d")} from {mapping.TableName} as d where id = :{parameter.ParameterName}");
var handler = new SingleResultReader <T>(source, _schema.StorageFor(typeof(T)), _identityMap);
addHandler(handler);
return(source.Task);
}
private IResolver <T> resolver <T>()
{
return(_schema.StorageFor(typeof(T)).As <IResolver <T> >());
}
/// <summary>
/// Compiles all of the IDocumentStorage classes upfront for all known document types
/// </summary>
/// <returns></returns>
public IList <IDocumentStorage> PrecompileAllStorage()
{
return(Options.AllDocumentMappings.Select(x => _schema.StorageFor(x.DocumentType)).ToList());
}
private IDocumentStorage storage <T>()
{
return(_schema.StorageFor(typeof(T)));
}
public void DeleteEntity <T>(T entity)
{
var id = _schema.StorageFor(typeof(T)).Identity(entity);
delete <T>(id);
}