/** * Get the row at the given index. * * @param at the index * @return the row */ Row getRowAt(int at) { Row r = rows[at]; if (r == null) { if (firstOverflowPageId == 0) { r = readRow(data, offsets[at], columnCount); } else { if (rowRef != null) { r = rowRef.get(); if (r != null) { return r; } } PageStore store = index.getPageStore(); Data buff = store.createData(); int pageSize = store.getPageSize(); int offset = offsets[at]; buff.write(data.getBytes(), offset, pageSize - offset); int next = firstOverflowPageId; do { PageDataOverflow page = index.getPageOverflow(next); next = page.readInto(buff); } while (next != 0); overflowRowSize = pageSize + buff.length(); r = readRow(buff, 0, columnCount); } r.setKey(keys[at]); if (firstOverflowPageId != 0) { rowRef = new SoftReference<Row>(r); } else { rows[at] = r; memoryChange(true, r); } } return r; }