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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2009, 2013 Oracle and/or its affiliates. All rights reserved.
*
*/
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Threading;
using System.Xml;
using NUnit.Framework;
using BerkeleyDB;
namespace CsharpAPITest
{
[TestFixture]
public class JoinCursorTest : CSharpTestFixture
{
[TestFixtureSetUp]
public void SetUpTestFixture()
{
testFixtureName = "JoinCursorTest";
base.SetUpTestfixture();
}
[Test]
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();
}
[Test]
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();
}
public void GetSecCursor(BTreeDatabase db,
string secFileName, SecondaryKeyGenDelegate keyGen,
out SecondaryBTreeDatabase secDB,
out SecondaryCursor cursor, bool ifCfg,
DatabaseEntry data)
{
// Open secondary database.
SecondaryBTreeDatabaseConfig secCfg =
new SecondaryBTreeDatabaseConfig(db, keyGen);
secCfg.Creation = CreatePolicy.IF_NEEDED;
secCfg.Duplicates = DuplicatesPolicy.SORTED;
secDB = SecondaryBTreeDatabase.Open(secFileName, secCfg);
int[] intArray = new int[4];
intArray[0] = 0;
intArray[1] = 1;
intArray[2] = 2049;
intArray[3] = 65537;
for (int i = 0; i < 4; i++)
{
DatabaseEntry record = new DatabaseEntry(
BitConverter.GetBytes(intArray[i]));
db.Put(record, record);
}
// Get secondary cursor on the secondary database.
if (ifCfg == false)
cursor = secDB.SecondaryCursor();
else
cursor = secDB.SecondaryCursor(new CursorConfig());
// Position the cursor.
if (data != null)
Assert.IsTrue(cursor.Move(data, true));
}
public DatabaseEntry KeyGenOnLittleByte(
DatabaseEntry key, DatabaseEntry data)
{
byte[] byteArr = new byte[1];
byteArr[0] = data.Data[0];
DatabaseEntry dbtGen = new DatabaseEntry(byteArr);
return dbtGen;
}
public DatabaseEntry KeyGenOnBigByte(
DatabaseEntry key, DatabaseEntry data)
{
byte[] byteArr = new byte[1];
byteArr[0] = data.Data[data.Data.Length - 1];
DatabaseEntry dbtGen = new DatabaseEntry(byteArr);
return dbtGen;
}
}
}
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