public override SqlFragment Visit(DbPropertyExpression expression) { propertyLevel++; PropertyFragment fragment = expression.Instance.Accept(this) as PropertyFragment; fragment.Properties.Add(expression.Property.Name); propertyLevel--; // if we are not at the top level property then just return if (propertyLevel > 0) { return(fragment); } ColumnFragment column = new ColumnFragment(null, fragment.LastProperty); column.PropertyFragment = fragment; InputFragment input = scope.FindInputFromProperties(fragment); if (input != null) { column.TableName = input.Name; } // now we need to check if our column name was possibly renamed if (input is TableFragment) { return(column); } SelectStatement select = input as SelectStatement; UnionFragment union = input as UnionFragment; if (select != null) { select.HasDifferentNameForColumn(column); } else if (union != null) { union.HasDifferentNameForColumn(column); } // input is a table, selectstatement, or unionstatement return(column); }
public override SqlFragment Visit(DbPropertyExpression expression) { propertyLevel++; PropertyFragment fragment = expression.Instance.Accept(this) as PropertyFragment; fragment.Properties.Add(expression.Property.Name); propertyLevel--; // if we are not at the top level property then just return if (propertyLevel > 0) { return(fragment); } ColumnFragment column = new ColumnFragment(null, fragment.LastProperty); column.PropertyFragment = fragment; InputFragment input = scope.FindInputFromProperties(fragment); if (input != null) { column.TableName = input.Name; } // now we need to check if our column name was possibly renamed if (input is TableFragment) { if (!string.IsNullOrEmpty(input.Name)) { SelectStatement sf = scope.GetFragment(input.Name) as SelectStatement; if (sf != null) { // Special case: undo alias in case of query fusing for (int i = 0; i < sf.Columns.Count; i++) { ColumnFragment cf = sf.Columns[i]; if (column.ColumnName == cf.ColumnAlias) { column.ColumnName = cf.ColumnName; column.ColumnAlias = cf.ColumnAlias; column.TableName = input.Name; return(column); } } } } return(column); } SelectStatement select = input as SelectStatement; UnionFragment union = input as UnionFragment; if (select != null) { select.HasDifferentNameForColumn(column); } else if (union != null) { union.HasDifferentNameForColumn(column); } // input is a table, selectstatement, or unionstatement return(column); }