HeapFile Constructor

HeapFile::HeapFile(const string & fileName, Status& returnStatus)
{
    Status      status;
    Page*       hdrPagePtr;
    Page*       pagePtr;
    int hdrPageNo;
    int pageNo;

    cout << "opening file " << fileName << endl;

    // open the file and read in the header page and the first data page
    if ((status = db.openFile(fileName, filePtr)) == OK)
    {
         //status = bufMgr->readPage(filePtr, curPageNo, curPage);
        filePtr->getFirstPage(hdrPageNo);

        Status readStat=bufMgr->readPage(filePtr,hdrPageNo, hdrPagePtr);
        int hdrFrameNo;
        bufMgr->hashTable->lookup(filePtr,hdrPageNo, hdrFrameNo);
        headerPageNo=hdrPageNo;
        headerPage=(FileHdrPage*) hdrPagePtr;
        hdrDirtyFlag=true;
        //      filePtr->getFirstPage();
        curDirtyFlag=true; //check?
        curPage=pagePtr;
        curPageNo=pageNo;
        curRec=NULLRID;

    }
    else
    {
        cerr << "open of heap file failed\n";
                returnStatus = status;
                return;
    }
}