private object SetNextId(object item)
{
var idVal = GetId(item);
if (DbReposetoryIdentityInsertScope.Current != null && _currentDbReposetoryIdentityInsertScope == null)
{
_currentDbReposetoryIdentityInsertScope = DbReposetoryIdentityInsertScope.Current;
_currentDbReposetoryIdentityInsertScope.EnsureTransaction();
}
if (_currentDbReposetoryIdentityInsertScope != null)
{
if (idVal.Equals(Constraints.PrimaryKey.GetUninitilized()) && !_currentDbReposetoryIdentityInsertScope.RewriteDefaultValues)
{
return(idVal);
}
if (!idVal.Equals(Constraints.PrimaryKey.GetUninitilized()))
{
return(idVal);
}
lock (LockRoot)
{
var newId = Constraints.PrimaryKey.GetNextValue();
_typeInfo.PrimaryKeyProperty.Setter.Invoke(item,
Convert.ChangeType(newId, _typeInfo.PrimaryKeyProperty.PropertyType));
return(newId);
}
}
if (idVal.Equals(Constraints.PrimaryKey.GetUninitilized()))
{
lock (LockRoot)
{
var newId = Constraints.PrimaryKey.GetNextValue();
_typeInfo.PrimaryKeyProperty.Setter.Invoke(item,
Convert.ChangeType(newId, _typeInfo.PrimaryKeyProperty.PropertyType));
return(newId);
}
}
var exception =
new InvalidOperationException(string.Format("Cannot insert explicit value for identity column in table '{0}' " +
"when no IdentityInsertScope exists.", _typeInfo.Name));
throw exception;
}
