public void LobGlobalTest()
{
DBLob lob = null;
DBLob lob2 = null;
DBLob lob3 = null;
bool flag = false;
ObjectId oid1 = ObjectId.Empty;
ObjectId oid2 = ObjectId.Empty;
ObjectId oid3 = ObjectId.Empty;
ObjectId oid4 = ObjectId.Empty;
long size1 = 0;
long time1 = 0;
long modificationTime = 0;
int bufSize = 1000;
int readNum = 0;
int retNum = 0;
int offset = 0;
int i = 0;
byte[] readBuf = null;
byte[] buf = new byte[bufSize];
for (i = 0; i < bufSize; i++)
{
buf[i] = 65;
}
DBCursor cursor = null;
BsonDocument record = null;
long lobSize = 0;
/// case 1: create a new lob
// CreateLob
lob = cl.CreateLob();
Assert.IsNotNull(lob);
// IsClosed
flag = true;
flag = lob.IsClosed();
Assert.IsFalse(flag);
// GetID
oid1 = lob.GetID();
Assert.IsTrue(ObjectId.Empty != oid1);
//
long modificationTime1 = lob.GetModificationTime();
// Write
lob.Write(buf);
// Close
lob.Close();
long modificationTime2 = lob.GetModificationTime();
Assert.IsTrue(modificationTime2 > modificationTime1);
// IsClosed
flag = false;
flag = lob.IsClosed();
Assert.IsTrue(flag);
// case 2: open an exsiting lob
lob2 = cl.OpenLob(oid1);
Assert.IsNotNull(lob2);
// IsClosed
flag = true;
flag = lob2.IsClosed();
Assert.IsFalse(flag);
// GetID
oid2 = lob2.GetID();
Assert.IsTrue(ObjectId.Empty != oid2);
Assert.IsTrue(oid1 == oid2);
// GetSize
size1 = lob2.GetSize();
Assert.IsTrue(bufSize == size1);
// GetCreateTime
time1 = lob2.GetCreateTime();
//Console.WriteLine("when open an existing lob, createTime is: " + time1);
Assert.IsTrue(time1 > 0);
// GetLastModificationTime
modificationTime = lob2.GetModificationTime();
Assert.IsTrue(modificationTime > 0);
//Console.WriteLine("when open an existing lob, modificationTime is: " + modificationTime);
// Read
readNum = bufSize / 4;
readBuf = new Byte[readNum];
retNum = lob2.Read(readBuf);
Assert.IsTrue(readNum == retNum);
// Seek
offset = bufSize / 2;
lob2.Seek(offset, DBLob.SDB_LOB_SEEK_CUR);
// Read
retNum = 0;
retNum = lob2.Read(readBuf);
Assert.IsTrue(readNum == retNum);
// Close
lob2.Close();
// IsClosed
flag = false;
flag = lob2.IsClosed();
Assert.IsTrue(flag);
/// case 3: create a lob with specified oid
oid3 = ObjectId.GenerateNewId();
lob3 = cl.CreateLob(oid3);
Assert.IsNotNull(lob3);
// GetID
oid4 = lob3.GetID();
Assert.IsTrue(ObjectId.Empty != oid4);
Assert.IsTrue(oid3 == oid4);
// Write
lob3.Write(buf);
// Close
lob3.Close();
// IsClosed
flag = false;
flag = lob3.IsClosed();
Assert.IsTrue(flag);
/// case 4: test api in cl
// ListLobs
cursor = cl.ListLobs();
Assert.IsNotNull(cursor);
i = 0;
while (null != (record = cursor.Next()))
{
i++;
if (record.Contains("Size") && record["Size"].IsInt64)
{
lobSize = record["Size"].AsInt64;
}
else
{
Assert.Fail();
}
}
Assert.IsTrue(2 == i);
// RemoveLobs
cl.RemoveLob(oid3);
// ListLobs
cursor = cl.ListLobs();
Assert.IsNotNull(cursor);
i = 0;
while (null != (record = cursor.Next()))
{
i++;
if (record.Contains("Size") && record["Size"].IsInt64)
{
lobSize = record["Size"].AsInt64;
}
else
{
Assert.Fail();
}
}
Assert.IsTrue(1 == i);
}