Changes between Version 34 and Version 35 of FDORfc34

Timestamp:

Aug 26, 2009, 7:04:27 PM (15 years ago)

Author:

klain

Comment:

--

FDORfc34

@@ -601 +601 @@
 A high level class diagram of existing reader related interfaces in FDO is as illustrated below. 
  
-Both FdoISqlReader and FdoIDataReader have the function to get the column name or property name according to the index. With this capability, it should be pretty easy to provide default implementation for all access by index functions. Take FdoIDataReader as an example:
-
-class FdoIDataReader: public FdoIReader
-{
-public:
-    virtual FdoInt32 GetInt32(FdoInt32 index)
-    {
-        FdoStringP propName = GetPropertyName(index);
-        return GetInt32(propName);
-    }
+Both FdoISqlReader and FdoIDataReader have the function to get the column name or property name according to the index. With this capability, it should be pretty easy to provide default implementation for all access by index functions. Take GetInt32() as an example:
+
+{{{
+FdoInt32 GetInt32(FdoInt32 index)
+{
+    FdoStringP propName = GetPropertyName(index);
+    return GetInt32(propName);
 }
+}}}
 
 In order to make it work in all cases, FdoIFeatureReader also needs to expose a function of FdoString* GetPropertyName(FdoInt32 index) and each provider needs to override it. It has been illustrated in above updated FdoIFeatureReader interface. This work is avoidless that each provider has to know how to map between property name and index for the default implementation.