public virtual StringBuilder BuildUpdateSets(IObjectMapInfo map, object entity)
{
StringBuilder b = new StringBuilder();
IReflector r = Reflector.Bind(entity);
foreach (var pmi in map.NonPKPropertyMaps)
{
b.Append(_tr.GetEscapedColumnName(pmi.ColumnName));
b.Append(_tr.Equal).Append(_tr.GetValueString(r.GetPropertyValue(pmi.PropertyName)));
b.Append(_tr.ColumnDelimiter);
}
b.RemoveEnd(_tr.ColumnDelimiter);
return(b);
}
protected override Expression VisitMethodCall(MethodCallExpression m)
{
if (m.Method.DeclaringType.Name == ExtensionFunctionNames.EXT_CLASS)
{
_str.Append(StringPair.Parenthesis.Begin);
switch (m.Method.Name)
{
case ExtensionFunctionNames.FUNC_TRUE:
string v = _tr.GetValueString(1);
_str.Append(v).Append(_tr.Equal).Append(v);
break;
case ExtensionFunctionNames.FUNC_FALSE:
string v1 = _tr.GetValueString(1);
string v0 = _tr.GetValueString(0);
_str.Append(v1).Append(_tr.Equal).Append(v0);
break;
case ExtensionFunctionNames.FUNC_IN:
Visit(m.Arguments[0]); //Note:Extension method, visit the 1st param first.
_str.Append(_tr.In);
_str.Append(StringPair.Parenthesis.Begin);
//Note: the 2nd param is an IEnumerable(params T[] is also IEnumerable).
IEnumerable seq = (m.Arguments[1] as ConstantExpression).Value as IEnumerable;
foreach (object item in seq)
{
_str.Append(_tr.GetValueString(item)).Append(_tr.ColumnDelimiter);
}
_str.RemoveEnd(_tr.ColumnDelimiter);
_str.Append(StringPair.Parenthesis.End);
break;
case ExtensionFunctionNames.FUNC_LIKE:
Visit(m.Arguments[0]); //Note:Extension method, visit the 1st param first.
_str.Append(_tr.Like);
object pattern = (m.Arguments[1] as ConstantExpression).Value;
_str.Append(_tr.GetValueString(pattern));
break;
default:
ParseExceptionHelper.ThrowNotSupportedExpression(m);
break;
}
_str.Append(StringPair.Parenthesis.End);
return(m);
}
ParseExceptionHelper.ThrowNotSupportedExpression(m);
return(m);
}
