public byte Read(DataLocation dataLocation)
{
Change change = _workspace.GetDataLocation(dataLocation);
byte value;
if (change == null) // the DataLocation is not in the workspace
{
TransactionManager tm = TransactionManager.GetInstance();
value = tm.Read(dataLocation);
_workspace.AddChange(new Change(dataLocation, value, false));
}
else // the DataLocation is in the workspace
{
value = change.Value;
}
return(value);
}
public byte Read(DataLocation location)
{
Change change = _workspace.FirstOrDefault(c => c.Location == location);
byte value;
if (change == null) // the DataLocation is not in the workspace
{
_workspace.AddChange(new Change {
IsWrite = false, Location = location
});
}
else // the DataLocatoin is in the workspace
{
value = change.Value;
}
}
public void StageChange(Change change)
{
AssertDMLocationIsMe(change.Location.DmLocation);
_workspace.AddChange(change);
}