/**
* Updates the specified record in the heap file.
*
* @throws IllegalArgumentException if the rid or new record is invalid
*/
public void updateRecord(RID rid, byte[] newRecord) {
PageId pid = rid.pageno;
if (!pids.contains(pid.pid)) throw new IllegalArgumentException("the RID is invalid");
Page page = new Page();
global.Minibase.BufferManager.pinPage(pid, page, false);
HFPage hfpage = new HFPage(page);
if (newRecord.length != hfpage.selectRecord(rid).length) {
throw new IllegalArgumentException("fail to update RID");
}
global.Minibase.BufferManager.unpinPage(rid.pageno, false);
}
public boolean updateRecord(RID rid, Tuple newTuple) throws ChainException {
// TODO Auto-generated method stub
PageId pid = rid.pageno;
if (!pids.contains(pid.pid)) throw new IllegalArgumentException("the RID is invalid");
Page page = new Page();
global.Minibase.BufferManager.pinPage(pid, page, false);
HFPage hfpage = new HFPage(page);
if (newTuple.getLength() != hfpage.selectRecord(rid).length) {
throw new IllegalArgumentException("fail to update RID");
}
global.Minibase.BufferManager.unpinPage(rid.pageno, false);
return true;
}