public void TestPutNoDuplicate()
{
testName = "TestPutNoDuplicate";
SetUpTest(true);
string dbFileName = testHome + "/" + testName + ".db";
HashDatabaseConfig hashConfig =
new HashDatabaseConfig();
hashConfig.Creation = CreatePolicy.ALWAYS;
hashConfig.Duplicates = DuplicatesPolicy.SORTED;
hashConfig.TableSize = 20;
HashDatabase hashDB = HashDatabase.Open(dbFileName, hashConfig);
DatabaseEntry key, data;
for (int i = 1; i <= 10; i++)
{
key = new DatabaseEntry(BitConverter.GetBytes(i));
data = new DatabaseEntry(BitConverter.GetBytes(i));
hashDB.PutNoDuplicate(key, data);
}
Assert.IsTrue(hashDB.Exists(
new DatabaseEntry(BitConverter.GetBytes((int)5))));
hashDB.Close();
}
/// <summary>
/// Gets the index payload for a given atom.
/// </summary>
/// <param name="atom">The internal representation belonging to the atom.</param>
/// <returns>
/// The index payload for the given atom.
/// </returns>
public IndexPayload GetPayload(long atom)
{
var key = new DatabaseEntry(Util.Encoding.DbEncode(atom));
if (m_db.Exists(key))
{
var kvPair = m_db.Get(key);
return(new IndexPayload(kvPair.Value.Data));
}
else
{
throw new ArgumentOutOfRangeException("atom", "No payload for given atom!");
}
}
/// <summary>
/// Gets the external (or friendly) string representation belonging to a given integer
/// used as internal representation by the database.
/// </summary>
/// <param name="value">The internal representation.</param>
/// <returns>
/// A string belonging to the given internal representation.
/// </returns>
public string GetExternalRepresentation(long value)
{
var key = new DatabaseEntry(Util.Encoding.DbEncode(value));
//
// if this particular internal representation does not already exist in the dictionary
// we throw an argument exception.
if (m_dbLong2Str.Exists(key))
{
var kvPair = m_dbLong2Str.Get(key);
return(Util.Encoding.DbDecodeString(kvPair.Value.Data));
}
else
{
throw new ArgumentOutOfRangeException("value", "No such internal representation!");
}
}
/// <summary>
/// Gets the internal representation used by the database for a given string value.
/// </summary>
/// <param name="value">The string value.</param>
/// <returns>
/// An integer which is the internal representation for the given string.
/// </returns>
public long GetInternalRepresentation(string value)
{
var key = new DatabaseEntry(Util.Encoding.DbEncode(value));
//
// if this string already exists in the dictionary we simply retrieve the internal
// representation that belongs to it. if not, we assign an internal representation to
// it on the fly and insert it into the dictionary. whatever case we are in is
// indistinguishable to the caller.
if (m_dbStr2Long.Exists(key))
{
var kvPair = m_dbStr2Long.Get(key);
return(Util.Encoding.DbDecodeInt64(kvPair.Value.Data));
}
else
{
var next = m_next++;
Insert(next, value);
return(next);
}
}
