NBearMapping is one of the NBearV4 framework components and can be used independently. It can be used for transparent ing between any type of objects, DataRow and DataReader objects. We recommend that you use NBearLite together.
Main functions:
1. Transparent ing between any type of objects, DataRow and DataReader objects;
2. Supports the. NET Nullable type;
3. High Performance: the performance is about 50% faster than Reflection-based equivalent conversion. The execution time of manual code vs NBearMapping vs Reflection object conversion is about. 5: 3. 6. See MappingTest in the source code. testPerformance () test;
Download source code, examples, and documentation:
NBearMapping_v1.0.0.2_beta.zip
Demo:
1 [TestMethod]
2 public void TestDataRowToObject ()
3 {
4 ObjectMapper mapper = new ObjectMapper (typeof (DataRow), typeof (User ));
5 mapper. addmmmmappingname ("UserID", "ID ");
6 User user = (User) mapper. ConvertObject (table. Rows [0]);
7 Assert. AreEqual (table. Rows [0] ["UserID"], user. ID );
8 Assert. AreEqual (table. Rows [0] ["Name"], user. Name );
9 User user2 = new User ();
10 mapper. ConvertObject (table. Rows [0], user2 );
11 Assert. AreEqual (table. Rows [0] ["UserID"], user2.ID );
12 Assert. AreEqual (table. Rows [0] ["Name"], user2.Name );
13}
14
15 [TestMethod]
16 public void TestDataReaderToObject ()
17 {
18 ObjectMapper mapper = new ObjectMapper (typeof (IDataReader), typeof (User ));
19 mapper. addmmmmappingname ("UserID", "ID ");
20 IDataReader reader = table. CreateDataReader ();
21 reader. Read ();
22 User user = (User) mapper. ConvertObject (reader );
23 Assert. AreEqual (table. Rows [0] ["UserID"], user. ID );
24 Assert. AreEqual (table. Rows [0] ["Name"], user. Name );
25 User user2 = new User ();
26 IDataReader reader2 = table. CreateDataReader ();
27 reader2.Read ();
28 mapper. ConvertObject (reader2, user2 );
29 Assert. AreEqual (table. Rows [0] ["UserID"], user2.ID );
30 Assert. AreEqual (table. Rows [0] ["Name"], user2.Name );
31}
32
33 [TestMethod]
34 public void ObjectToObject ()
35 {
36 ObjectMapper mapper = new ObjectMapper (typeof (User), typeof (User ));
37 User user = (User) mapper. ConvertObject (user3 );
38 Assert. AreEqual (user3.ID, user. ID );
39 Assert. AreEqual (user3.Name, user. Name );
40 User user2 = new User ();
41 mapper. ConvertObject (user3, user2 );
42 Assert. AreEqual (user3.ID, user2.ID );
43 Assert. AreEqual (user3.Name, user2.Name );
44}
45
46 [TestMethod]
47 public void TestObjectToDataTableDataReaderAndDataRow ()
48 {
49 ObjectMapper mapper = new ObjectMapper (typeof (User), typeof (DataTable ));
50 mapper. addmmmmappingname ("ID", "UserID ");
51 DataTable userTable = (DataTable) mapper. ConvertObject (user3 );
52 Assert. AreEqual (user3.ID, userTable. Rows [0] ["UserID"] = DBNull. Value? Null: userTable. Rows [0] ["UserID"]);
53 Assert. AreEqual (user3.Name, userTable. Rows [0] ["Name"]);
54 mapper. ConvertObject (user3, userTable );
55 Assert. AreEqual (user3.ID, userTable. Rows [1] ["UserID"] = DBNull. Value? Null: userTable. Rows [1] ["UserID"]);
56 Assert. AreEqual (user3.Name, userTable. Rows [1] ["Name"]);
57
58 mapper = new ObjectMapper (typeof (User), typeof (IDataReader ));
59 mapper. AddCustomMappingName ("ID", "UserID ");
60 IDataReader reader = (IDataReader) mapper. ConvertObject (user3 );
61 Assert. IsNotNull (reader );
62
63 mapper = new ObjectMapper (typeof (User), typeof (DataRow ));
64 mapper. addmmmmappingname ("ID", "UserID ");
65 DataRow row = (DataRow) mapper. ConvertObject (user3 );
66 Assert. IsNotNull (row );
67}
Revision
7/26 update to v1.0.0.1 to fix the set null value bug in 1.0.0.0.
8/6 update to v1.0.0.2 support enumeration Fields
