/// <summary>
/// Instantiates a new database. Each data file that's part of the database must be included in the files parameter.
/// The order of the files is irrelevant.
/// </summary>
public Database(IEnumerable<string> files)
{
foreach(string file in files)
{
using(var fs = new FileStream(file, FileMode.Open, FileAccess.Read, FileShare.Read))
{
byte[] fileHeaderBytes = new byte[8192];
fs.Read(fileHeaderBytes, 0, 8192);
// This is kindy hackish as "this" isn't operational yet. As such, any calls to "this" will fail.
// We know however that, currently, FileHeaderPage doesn't use the reference. Should be changed
// later on.
var fileHeaderPage = new FileHeaderPage(fileHeaderBytes, this);
// Store reference to data file
Files.Add(fileHeaderPage.FileID, new DataFile(fileHeaderPage.FileID, file));
}
}
// Instantiate buffer manager
bufferManager = new BufferManager(this);
// Read boot page properties
var bootPage = GetBootPage();
Name = bootPage.DatabaseName;
ID = bootPage.DBID;
// Parse vital base tables
BaseTables = new BaseTableData(this);
// Startup dmv generator
Dmvs = new DmvGenerator(this);
}
public PageLocator(BufferManager bufferManager, bool backupMode)
{
_bufferManager = bufferManager;
_backupMode = backupMode;
_backupPagesMap = new Dictionary <short, Dictionary <long, PagePointer> >();
}
