public IQueryable <T> All <T>() where T : class, new()
{
if (_options.Contains(SimpleRepositoryOptions.RunMigrations))
{
Migrate <T>();
}
var qry = new Query <T>(_provider);
return(qry);
}
public SimpleRepository(IDataProvider provider, SimpleRepositoryOptions options)
{
_provider = provider;
_options = options;
if (_options.Contains(SimpleRepositoryOptions.RunMigrations))
{
migrated = new List <Type>();
}
}
public bool Exists <T>(Expression <Func <T, bool> > expression) where T : class, new()
{
if (_options.Contains(SimpleRepositoryOptions.RunMigrations))
{
Migrate <T>();
}
//return All<T>().Any(expression);
var tbl = _provider.FindOrCreateTable <T>();
var qry = new Select(_provider).From(tbl);
var constraints = expression.ParseConstraints().ToList();
#region Support SubSonicColumnNameOverrideAttribute
foreach (Constraint ct in constraints)
{
PropertyInfo pi = typeof(T).GetProperties().SingleOrDefault(p => p.Name == ct.ColumnName);
if (pi != null)
{
var columnAttributes = pi.GetCustomAttributes(typeof(SubSonicColumnNameOverrideAttribute), false);
if (columnAttributes.Length > 0)
{
ct.ConstructionFragment = (columnAttributes[0] as SubSonicColumnNameOverrideAttribute).ColumnName;
}
}
}
#endregion
qry.Constraints = constraints;
var list = qry.ToList <T>();
if (list.Count > 0)
{
return(true);
}
return(false);
}
public bool Exists <T>(Expression <Func <T, bool> > expression) where T : class, new()
{
if (_options.Contains(SimpleRepositoryOptions.RunMigrations))
{
Migrate <T>();
}
var qry = new Query <T>(_provider);
return(qry.Any(expression));
}