public Key AddItem(string name)
{
++directoryVersion;
StringDictionary pset = new StringDictionary(GetDataFile(propertySetKey));
// Assert the item isn't already stored,
if (pset.GetValue <long>(name, -1) != -1)
{
throw new ApplicationException("Item already exists: " + name);
}
// Generate a unique identifier for the name,
long id = GenerateId();
pset.SetValue(name, id);
SortedIndex iset = new SortedIndex(GetDataFile(indexSetKey));
iset.Insert(name, id, collator);
Key itemKey = GetItemKey(id);
IDataFile df = GetDataFile(itemKey);
try {
BinaryWriter dout = new BinaryWriter(new DataFileStream(df), Encoding.Unicode);
dout.Write(name);
} catch (IOException e) {
throw new ApplicationException(e.Message);
}
return(itemKey);
}
private void AddRowToIndexSet(long rowid)
{
// Get the set of columns that are indexed in this table,
string[] indexedCols = IndexedColumns;
foreach (String col in indexedCols)
{
// Resolve the column name to an id, turn it into a OrderedList64Bit,
// and insert the row in the correct location in the index,
long columnid = GetColumnId(col);
IDataFile df = GetDataFile(GetIndexIdKey(columnid));
SortedIndex index = new SortedIndex(df);
IIndexedObjectComparer <string> indexComparer = GetIndexComparerFor(col, columnid);
index.Insert(GetValue(rowid, columnid), rowid, indexComparer);
}
}
private void BuildIndex(long columnid, IIndexedObjectComparer <string> indexComparer)
{
// Get the index object
IDataFile df = GetDataFile(GetIndexIdKey(columnid));
// Get the index and clear it,
SortedIndex index = new SortedIndex(df);
index.Clear();
// For each row in this table,
foreach (DbRow row in this)
{
// Get the column value and the rowid
string columnValue = row.GetValue(columnid);
long rowid = row.RowId;
// Add it into the index,
index.Insert(columnValue, rowid, indexComparer);
}
// Done.
}