protected override Expression VisitParameter(ParameterExpression p)
{
SingleEntityView op = null;
if (p.Name == _lParamName)
{
op = _left;
}
if (p.Name == _rParamName)
{
op = _right;
}
Assertion.IsNotNull(op, "parameter expression invalid.");
if (!string.IsNullOrEmpty(op.Alias))
{
_str.Append(_tr.GetEscapedTableName(op.Alias));
}
else
{
var map = _cache.GetMapInfo(p.Type, true);
_str.Append(_tr.GetEscapedTableName(map.Table.LocalName));
}
return(p);
}
protected void CheckParameterName(string paramName, SingleEntityView view)
{
if ((!string.IsNullOrEmpty(view.Alias)) && paramName != view.Alias)
{
ParseExceptionHelper.ThrowParameterNameNotMatchViewAlias(paramName, view.Alias, view.EntityType);
}
}
private void Visit(SingleEntityView sv)
{
var map = _cache.GetMapInfo(sv.EntityType, true);
_str.Append(_tr.GetEscapedTableName(map.Table.LocalName));
if (!string.IsNullOrEmpty(sv.Alias))
{
_str.Append(SPACE).Append(_tr.GetEscapedTableName(sv.Alias));
}
}
public virtual StringBuilder GetJoinEquation(JoinView view)
{
_left = GetMostLeftSingleView(view.Left);
_right = GetMostLeftSingleView(view.Right);
_str = new StringBuilder();
this.Visit(view.JoinKey);
_str.UnBracketing(StringPair.Parenthesis);
return(_str);
}
private void Visit(SingleEntityView s)
{
var map = _cache.GetMapInfo(s.EntityType, true);
string prefix = s.Alias ?? map.Table.LocalName;
foreach (var pMap in map.PropertyMaps)
{
_str.Append(_tr.GetEscapedTableName(prefix)).Append(_tr.MemberAccess).Append(_tr.GetEscapedColumnName(pMap.ColumnName))
.Append(_tr.As).Append(_tr.GetEscapedColumnName(prefix + pMap.ColumnName)).Append(_tr.ColumnDelimiter);
}
}
public static string ChooseNameFromView(this ParameterExpression p, IEnumerable <SingleEntityView> svList, IObjectMapInfoCache cache)
{
var matchType = from v in svList
where v.EntityType == p.Type
select v;
switch (matchType.Count())
{
case 0:
ParseExceptionHelper.ThrowTypeNotDefinedInView(p);
break;
case 1:
SingleEntityView view = matchType.First();
if ((!string.IsNullOrEmpty(view.Alias)) && view.Alias != p.Name)
{
ParseExceptionHelper.ThrowParameterNameNotMatchViewAlias(p.Name, view.Alias, view.EntityType);
}
if (!string.IsNullOrEmpty(view.Alias))
{
return(view.Alias);
}
else
{
var map = cache.GetMapInfo(p.Type, true);
return(map.Table.LocalName);
}
default:
var q = from v in matchType
where v.Alias == p.Name
select v;
switch (q.Count())
{
case 0:
ParseExceptionHelper.ThrowNoAliasForParameterName(p);
break;
case 1:
return(q.First().Alias);
default:
ParseExceptionHelper.ThrowMultiTypeHaveSameAlias(p);
break;
}
break;
}
return(string.Empty);
}
private void VisitViewAlias(SingleEntityView view)
{
_list.Add(view);
}
