public DatabaseCollector(IDatabase database)
{
MaintainObjectModel = true;
Database = database;
// 1. Build a Collector for each Table
_tableCollectors = new Dictionary <string, TableCollector>();
foreach (var table in database.Tables)
{
_tableCollectors[table.Key] = new TableCollector(this, table.Value, table.Key);
}
// 2. Hook up ref columns between the source and target table collectors
foreach (var table in database.Tables)
{
string tableName = table.Key;
TableCollector sourceCollector = _tableCollectors[tableName];
foreach (var column in table.Value.Columns)
{
IRefColumn refColumn = column.Value as IRefColumn;
if (refColumn != null)
{
sourceCollector.AddRefColumn(column.Key, refColumn, _tableCollectors[refColumn.ReferencedTableName]);
}
}
}
}
public void AddRefColumn(string columnName, IRefColumn column, TableCollector target)
{
if (_refsFromTable == null)
{
_refsFromTable = new List <ColumnCollector>();
}
if (target._refsToTable == null)
{
target._refsToTable = new List <ColumnCollector>();
}
ColumnCollector collector = new ColumnCollector(columnName, column, target);
// Add column to 'RefsTo' in the target (for remapping indices)
target._refsToTable.Add(collector);
// Add column to 'RefsFrom' in the source (for walking reachable indices)
_refsFromTable.Add(collector);
}
public void CopyUnreachableGraphToTemp()
{
if (_unreachableCount == 0)
{
return;
}
_tempTable = _databaseCollector.TempDatabase.Tables[_tableName];
// Copy every row in the unreachable graph to the temp table *non-recursively*
foreach (string columnName in _table.Columns.Keys)
{
IColumn source = _table.Columns[columnName];
IColumn temp = _tempTable.Columns[columnName];
for (int tempIndex = 0; tempIndex < _tempIndexToRowIndex.Length; ++tempIndex)
{
int sourceIndex = _tempIndexToRowIndex[tempIndex];
temp.CopyItem(tempIndex, source, sourceIndex);
}
}
// Update every Ref and RefList in the temp copy of *this* table to use the re-assigned temp indices from the corresponding referenced temp table
if (_refsFromTable != null)
{
foreach (var refCollector in _refsFromTable)
{
IRefColumn tempTableColumn = (IRefColumn)_tempTable.Columns[refCollector.ColumnName];
TableCollector referencedTableCollector = refCollector.ReferencedTableCollector;
tempTableColumn.ForEach((slice) => IntRemapper.Instance.Remap(slice, referencedTableCollector._rowIndexToTempIndex));
}
}
// Ensure temp table count correct
_tempTable.SetCount(_tempIndexToRowIndex.Length);
}
public ColumnCollector(string columnName, IRefColumn column, TableCollector referencedTableCollector)
{
ColumnName = columnName;
Column = column;
ReferencedTableCollector = referencedTableCollector;
}