public IndexPage(IndexFileInfo inf, byte [] data, DatabaseImp database)
{
if (inf.KeyCount > 100)
{
throw new System.Exception("Max number of index columns exceeded");
}
Inf = inf;
Database = database;
bool leaf = IsLeafPage();
ColStore = leaf ? inf.KeyCount : inf.Types.Length; // Currently these are the same.
NodeSize = NodeOverhead + inf.KeySize() + (leaf ? 0 : PageIdSize);
NodeBase = FixedHeader + (leaf ? 0 : PageIdSize) - NodeSize;
MaxNode = (PageSize - (NodeBase + NodeSize)) / NodeSize;
if (MaxNode > 2047)
{
MaxNode = 2047; // Node ids are 11 bits.
}
if (data == null)
{
Data = new byte[PageSize];
}
else
{
Data = data;
ReadHeader();
}
// Console.WriteLine( "New IndexPage Count=" + Count + " ColStore=" + ColStore + " NodeSize=" + NodeSize + " MaxNode=" + MaxNode );
}
public IndexFile( FullyBufferedStream f, IndexFileInfo inf, DatabaseImp d, long indexId )
{
F = f; Inf = inf; Database = d; IndexId = indexId;
Initialise();
//System.Console.WriteLine("New IndexFile " + " Root=" + Root + " PageAlloc=" + PageAlloc );
//Dump();
}
bool Dirty; // Has the table been modified since the last commit or rollback?
public Table(DatabaseImp database, Schema schema, string name, ColInfo ci, long tableId)
{
Database = database;
TableId = tableId;
schema.TableDict[name] = this;
IxInfo = new IndexInfo[0];
DataFile = Database.OpenFile(FileType.Table, tableId);
InitColumnInfo(ci);
// System.Console.WriteLine( "Opened " + Schema + "." + name + " RowSize=" + RowSize + " RowCount=" + RowCount );
}
public Table(DatabaseImp db, Schema schema, string name, ColInfo cols, long tableId)
{
TableId = tableId;
schema.TableDict[name] = this;
Schema = schema.Name;
Name = name;
Db = db;
Ix = new IndexInfo[0];
Cols = cols;
DF = Db.OpenFile(FileType.Table, tableId);
RowSize = CalcRowSize(Cols);
RowCount = (long)(DF.Length / RowSize);
RB = new byte[RowSize];
// System.Console.WriteLine( "Opened " + Schema + "." + name + " RowSize=" + RowSize + " RowCount=" + RowCount );
}
public PageParent(IndexFileInfo inf, byte [] data, DatabaseImp d) : base(inf, data, d)
{
}