Method writePage

src/java/simpledb/storage/HeapFile.java:105–116

(Page page)

    // see DbFile.java for javadocs
    public void writePage(Page page) throws IOException {
        // some code goes here
        // not necessary for lab1
        HeapPageId heapPageId = (HeapPageId) page.getId();
        int size = BufferPool.getPageSize();
        int pageNumber = heapPageId.getPageNumber();
        byte[] pageData = page.getPageData();
        RandomAccessFile randomAccessFile = new RandomAccessFile(file, "rw");
        randomAccessFile.seek(pageNumber* size);
        randomAccessFile.write(pageData);
        randomAccessFile.close();
    }

    /**
     * Returns the number of pages in this HeapFile.