Method open

src/java/simpledb/index/BTreeFile.java:1332–1338

Open this iterator by getting an iterator on the first leaf page

()

	 * Open this iterator by getting an iterator on the first leaf page
	 */
	public void open() throws DbException, TransactionAbortedException {
		BTreeRootPtrPage rootPtr = (BTreeRootPtrPage) Database.getBufferPool().getPage(
				tid, BTreeRootPtrPage.getId(f.getId()), Permissions.READ_ONLY);
		BTreePageId root = rootPtr.getRootId();
		curp = f.findLeafPage(tid, root, null);
		it = curp.iterator();
	}

	/**
	 * Read the next tuple either from the current page if it has more tuples or