Changes between Version 2 and Version 3 of FDORfc41

Timestamp:

Aug 20, 2009, 5:12:20 PM (15 years ago)

Author:

leaf

Comment:

--

FDORfc41

@@ -33 +33 @@
 The FdoISQLCommand and FdoIBaseSelect interfaces will also be extended to add the following two new methods to get/set fetch size. Because fetch size is a performance tuning parameter and does not alter how feature readers and data readers return data to the caller. So it isn’t added as a new command capability. If one FDO provider doesn’t support fetch size, nothing will happen.
 
+{{{
+    /// \brief 
+    /// Gets the fetch size of the data set when executing query against 
+    /// the underlying data store. This parameter is typically set in 
+    /// situations where large amount of data are expected when a query
+    /// is executed and providers need to minimize the number of returned data.
+    /// For example, fetch 100 rows in one execution step.
+    /// 
+    /// \return
+    /// Returns the fetch size.
+    /// 
+    FDO_API virtual FdoInt32 GetFetchSize() = 0;
+  
+    /// \brief  
+    /// Sets the fetch size of the data set when executing query against 
+    /// the underlying data store. This parameter is typically set in 
+    /// situations where large amount of data are expected when a query
+    /// is executed and providers need to minimize the number of returned data.
+    /// For example, fetch 100 rows in one execution step.
+    /// 
+    /// \param value
+    /// Input the fetch size.
+    /// 
+    /// \return
+    /// Returns nothing.
+    ///   
+    FDO_API virtual void SetFetchSize(FdoInt32 fetchSize) = 0;
+}}}
+
 == Managed FDO API ==