Method getSize

src/java/simpledb/storage/TupleDesc.java:185–193

获取所有元数据的字节大小 @return The size (in bytes) of tuples corresponding to this TupleDesc. Note that tuples from a given TupleDesc are of a fixed size.

()

     *         Note that tuples from a given TupleDesc are of a fixed size.
     */
    public int getSize() {
        // some code goes here
        int res = 0;
        for(int i=0;i<this.tupleDescList.size();i++){
            res += this.tupleDescList.get(i).fieldType.getLen();
        }
        return res;

    }

    /**
     * Merge two TupleDescs into one, with td1.numFields + td2.numFields fields,