public void TestAppend()
{
uint recno;
testName = "TestAppend";
SetUpTest(true);
string dbFileName = testHome + "/" + testName + ".db";
RecnoDatabaseConfig recnoConfig =
new RecnoDatabaseConfig();
recnoConfig.Creation = CreatePolicy.IF_NEEDED;
recnoConfig.Append = new AppendRecordDelegate(
AppendRecord);
RecnoDatabase recnoDB = RecnoDatabase.Open(
dbFileName, recnoConfig);
recno = recnoDB.Append(new DatabaseEntry(
ASCIIEncoding.ASCII.GetBytes("data")));
KeyValuePair <DatabaseEntry, DatabaseEntry> pair;
pair = recnoDB.Get(
new DatabaseEntry(BitConverter.GetBytes(recno)));
Assert.AreEqual(ASCIIEncoding.ASCII.GetBytes("data"),
pair.Value.Data);
recnoDB.Close();
}
public void TestAppendWithoutTxn()
{
testName = "TestAppendWithoutTxn";
SetUpTest(true);
string recnoDBFileName = testHome + "/" +
testName + ".db";
RecnoDatabaseConfig recnoConfig =
new RecnoDatabaseConfig();
recnoConfig.Creation = CreatePolicy.ALWAYS;
RecnoDatabase recnoDB = RecnoDatabase.Open(
recnoDBFileName, recnoConfig);
DatabaseEntry data = new DatabaseEntry(
ASCIIEncoding.ASCII.GetBytes("data"));
uint num = recnoDB.Append(data);
DatabaseEntry key = new DatabaseEntry(
BitConverter.GetBytes(num));
Assert.IsTrue(recnoDB.Exists(key));
KeyValuePair <DatabaseEntry, DatabaseEntry> record =
recnoDB.Get(key);
Assert.IsTrue(data.Data.Length ==
record.Value.Data.Length);
for (int i = 0; i < data.Data.Length; i++)
{
Assert.IsTrue(data.Data[i] ==
record.Value.Data[i]);
}
recnoDB.Close();
}
public void PutRecio(byte[] data, Transaction txn = null)
{
RecnoDatabase recno = db as RecnoDatabase;
if (null != recno)
{
DatabaseEntry v = new DatabaseEntry(data);
recno.Append(v, txn);
}
}
protected void AddToDb(string keyval, byte[] dataval)
{
var key = new DatabaseEntry(Encoding.UTF8.GetBytes(keyval));
var data = new DatabaseEntry(dataval);
//This is the data insertion method for Queue/Recno databases.
db.Append(data);
//...not this one
//db.Put(key, data);
}
public void ModifyRecordsInDB(RecnoDatabase db,
Transaction txn)
{
uint[] recnos = new uint[100];
if (txn == null)
{
// Add a lot of records into database.
for (int i = 0; i < 100; i++)
{
recnos[i] = db.Append(new DatabaseEntry(
new byte[10240]));
}
// Remove some records from database.
for (int i = 30; i < 100; i++)
{
db.Delete(new DatabaseEntry(
BitConverter.GetBytes(recnos[i])));
}
}
else
{
// Add a lot of records into database in txn.
for (int i = 0; i < 100; i++)
{
recnos[i] = db.Append(new DatabaseEntry(
new byte[10240]), txn);
}
// Remove some records from database in txn.
for (int i = 30; i < 100; i++)
{
db.Delete(new DatabaseEntry(
BitConverter.GetBytes(recnos[i])), txn);
}
}
}
/*
* Open environment, database and write data into database.
* Generated log files are put under testHome.
*/
public void Logging(string home, string dbName,
out DatabaseEnvironment env, out RecnoDatabase recnoDB)
{
string dbFileName = dbName + ".db";
Configuration.ClearDir(home);
// Open environment with logging subsystem.
DatabaseEnvironmentConfig envConfig =
new DatabaseEnvironmentConfig();
envConfig.Create = true;
envConfig.UseLogging = true;
envConfig.LogSystemCfg = new LogConfig();
envConfig.LogSystemCfg.FileMode = 755;
envConfig.LogSystemCfg.ZeroOnCreate = true;
envConfig.UseMPool = true;
env = DatabaseEnvironment.Open(home, envConfig);
/*
* Open recno database, write 100000 records into
* the database and close it.
*/
RecnoDatabaseConfig recnoConfig =
new RecnoDatabaseConfig();
recnoConfig.Creation = CreatePolicy.IF_NEEDED;
recnoConfig.Env = env;
// The db needs mpool to open.
recnoConfig.NoMMap = false;
recnoDB = RecnoDatabase.Open(dbFileName,
recnoConfig);
for (int i = 0; i < 1000; i++)
{
recnoDB.Append(new DatabaseEntry(
ASCIIEncoding.ASCII.GetBytes("key")));
}
}