public void TestJoin()
{
testName = "TestJoin";
SetUpTest(true);
string dbFileName = testHome + "/" + testName + ".db";
string secFileName1 = testHome + "/" + "sec_" + testName + "1.db";
string secFileName2 = testHome + "/" + "sec_" + testName + "2.db";
// Open a primary database.
BTreeDatabaseConfig dbCfg = new BTreeDatabaseConfig();
dbCfg.Creation = CreatePolicy.IF_NEEDED;
BTreeDatabase db = BTreeDatabase.Open(dbFileName, dbCfg);
for (int i = 0; i < 10; i++)
{
db.Put(new DatabaseEntry(BitConverter.GetBytes(i)),
new DatabaseEntry(BitConverter.GetBytes(i)));
}
/*
* Open two databases, their secondary databases and
* secondary cursors.
*/
SecondaryBTreeDatabase secDB1, secDB2;
SecondaryCursor[] cursors = new SecondaryCursor[2];
GetSecCursor(db, secFileName1,
new SecondaryKeyGenDelegate(KeyGenOnBigByte),
out secDB1, out cursors[0], false, null);
GetSecCursor(db, secFileName2,
new SecondaryKeyGenDelegate(KeyGenOnLittleByte),
out secDB2, out cursors[1], true, null);
// Get join cursor.
JoinCursor joinCursor = db.Join(cursors, true);
Assert.IsNotNull(joinCursor.GetEnumerator().Current);
// Close all.
joinCursor.Dispose();
cursors[0].Close();
cursors[1].Close();
secDB1.Close();
secDB2.Close();
db.Close();
}
public void TestJoin()
{
testName = "TestJoin";
testHome = testFixtureHome + "/" + testName;
string dbFileName = testHome + "/" + testName + ".db";
string secFileName1 = testHome + "/" + "sec_" + testName + "1.db";
string secFileName2 = testHome + "/" + "sec_" + testName + "2.db";
Configuration.ClearDir(testHome);
// Open a primary database.
BTreeDatabaseConfig dbCfg = new BTreeDatabaseConfig();
dbCfg.Creation = CreatePolicy.IF_NEEDED;
BTreeDatabase db = BTreeDatabase.Open(dbFileName, dbCfg);
/*
* Open two databases, their secondary databases and
* secondary cursors.
*/
SecondaryBTreeDatabase secDB1, secDB2;
SecondaryCursor[] cursors = new SecondaryCursor[2];
GetSecCursor(db, secFileName1,
new SecondaryKeyGenDelegate(KeyGenOnBigByte),
out secDB1, out cursors[0], false, null);
GetSecCursor(db, secFileName2,
new SecondaryKeyGenDelegate(KeyGenOnLittleByte),
out secDB2, out cursors[1], true, null);
// Get join cursor.
JoinCursor joinCursor = db.Join(cursors, true);
// Close all.
joinCursor.Close();
cursors[0].Close();
cursors[1].Close();
secDB1.Close();
secDB2.Close();
db.Close();
}
public void TestMoveJoinCursor()
{
testName = "TestMoveJoinCursor";
SetUpTest(true);
string dbFileName = testHome + "/" + testName + ".db";
string secFileName1 = testHome + "/" + "sec_" + testName + "1.db";
string secFileName2 = testHome + "/" + "sec_" + testName + "2.db";
// Open a primary database.
BTreeDatabaseConfig dbCfg = new BTreeDatabaseConfig();
dbCfg.Creation = CreatePolicy.IF_NEEDED;
BTreeDatabase db = BTreeDatabase.Open(dbFileName, dbCfg);
/*
* Open a secondary database on high byte of
* its data and another secondary database on
* little byte of its data.
*/
SecondaryBTreeDatabase secDB1, secDB2;
SecondaryCursor[] cursors = new SecondaryCursor[2];
byte[] byteValue = new byte[1];
byteValue[0] = 0;
GetSecCursor(db, secFileName1,
new SecondaryKeyGenDelegate(KeyGenOnBigByte),
out secDB1, out cursors[0], false,
new DatabaseEntry(byteValue));
byteValue[0] = 1;
GetSecCursor(db, secFileName2,
new SecondaryKeyGenDelegate(KeyGenOnLittleByte),
out secDB2, out cursors[1], true,
new DatabaseEntry(byteValue));
// Get join cursor.
JoinCursor joinCursor = db.Join(cursors, true);
/*
* MoveNextJoinItem do not use data value found
* in all of the cursor so the data in Current won't be
* changed.
*/
Assert.IsTrue(joinCursor.MoveNextItem());
Assert.AreEqual(0, joinCursor.Current.Key.Data[
joinCursor.Current.Key.Data.Length - 1]);
Assert.AreEqual(1, joinCursor.Current.Key.Data[0]);
Assert.IsNull(joinCursor.Current.Value.Data);
// Iterate on join cursor.
foreach (KeyValuePair <DatabaseEntry, DatabaseEntry> pair in joinCursor)
{
/*
* Confirm that the key got by join cursor has 0 at
* its highest byte and 1 at its lowest byte.
*/
Assert.AreEqual(0, pair.Key.Data[pair.Key.Data.Length - 1]);
Assert.AreEqual(1, pair.Key.Data[0]);
}
Assert.IsFalse(joinCursor.MoveNext());
// Close all.
joinCursor.Close();
cursors[0].Close();
cursors[1].Close();
secDB1.Close();
secDB2.Close();
db.Close();
}
