public void testLobOpenWrite4()
{
String str1 = "Hello, world!";
int offset1 = 1024 * 256 * 2 + 1024 * 2;
String str2 = "LOB random Write";
int offset2 = offset1 - str2.Length * 2;
ObjectId id = ObjectId.GenerateNewId();
DBLob lob = cl.CreateLob(id);
lob.Close();
DBLob lob1 = cl.OpenLob(id, DBLob.SDB_LOB_WRITE);
DBLob lob2 = cl.OpenLob(id, DBLob.SDB_LOB_WRITE);
lob1.LockAndSeek(offset1, str1.Length);
lob1.Write(System.Text.Encoding.Default.GetBytes(str1));
lob2.LockAndSeek(offset2, str2.Length);
lob2.Write(System.Text.Encoding.Default.GetBytes(str2));
lob1.Close();
lob2.Close();
long lobSize = lob1.GetSize();
DBCursor cursor = cl.ListLobs();
BsonDocument obj = cursor.Next();
Assert.IsNotNull(obj);
ObjectId oid = obj.GetValue("Oid").AsObjectId;
Assert.AreEqual(id, oid);
Assert.IsNull(cursor.Next());
lob = cl.OpenLob(id);
Assert.AreEqual(lobSize, lob.GetSize());
byte[] bytes = new byte[(int)lob.GetSize()];
lob.Read(bytes);
lob.Close();
String s1 = System.Text.Encoding.Default.GetString(bytes, offset1, str1.Length);
Assert.AreEqual(str1, s1);
String s2 = System.Text.Encoding.Default.GetString(bytes, offset2, str2.Length);
Assert.AreEqual(str2, s2);
cl.RemoveLob(id);
cursor = cl.ListLobs();
Assert.IsNull(cursor.Next());
}
public void testLobOpenWrite8()
{
String str = "1234567890";
String str2 = "abcde";
String str3 = "12345abcde";
ObjectId id = ObjectId.GenerateNewId();
DBLob lob = cl.CreateLob(id);
lob.Close();
lob = cl.OpenLob(id, DBLob.SDB_LOB_WRITE);
lob.Write(System.Text.Encoding.Default.GetBytes(str));
lob.Close();
lob = cl.OpenLob(id, DBLob.SDB_LOB_WRITE);
lob.LockAndSeek(5, -1);
lob.Write(System.Text.Encoding.Default.GetBytes(str2));
lob.Close();
long lobSize = lob.GetSize();
DBCursor cursor = cl.ListLobs();
BsonDocument obj = cursor.Next();
Assert.IsNotNull(obj);
ObjectId oid = obj.GetValue("Oid").AsObjectId;
Assert.AreEqual(id, oid);
Assert.IsNull(cursor.Next());
lob = cl.OpenLob(id);
Assert.AreEqual(lobSize, lob.GetSize());
byte[] bytes = new byte[(int)lob.GetSize()];
lob.Read(bytes);
lob.Close();
String s = System.Text.Encoding.Default.GetString(bytes);
Assert.AreEqual(str3, s);
cl.RemoveLob(id);
cursor = cl.ListLobs();
Assert.IsNull(cursor.Next());
}