/// <summary>
/// Adds the specified entry.
/// </summary>
/// <param name="entry">The entry.</param>
/// <exception cref="DuplicateNameException">Thrown when there is
/// already an entry with the same hash exists.</exception>
public void AddChunk(DataChunk chunk)
{
try {
_session.Save(chunk);
} catch (NHibernate.Exceptions.GenericADOException ex) {
throw new DuplicateNameException(
"Chunk hash needs to be unique.", ex);
}
}
/// <summary>
/// Adds the chunk if not exists.
/// </summary>
/// <param name="session">The session.</param>
/// <param name="chunk">The chunk.</param>
/// <returns>True if the chunk already exists and this chunk is not
/// inserted.</returns>
public static bool AddChunkIfNotExists(IStatelessSession session,
DataChunk chunk)
{
ICriteria crit = session.CreateCriteria(typeof(DataChunk));
ICriterion hashEq = Expression.Eq("Hash", chunk.Hash);
crit.Add(hashEq);
if ((DataChunk)crit.UniqueResult() == null) {
// Save if no duplicate is found.
session.Insert(chunk);
return false;
} else {
return true;
}
}
