Method fieldNameToIndex

src/java/simpledb/storage/TupleDesc.java:163–178

Find the index of the field with a given name. @param name name of the field. @return the index of the field that is first to have the given name. @throws NoSuchElementException if no field with a matching name is found.

(String name)

     *             if no field with a matching name is found.
     */
    public int fieldNameToIndex(String name) throws NoSuchElementException {
        // some code goes here
        if(name==null){
            throw new NoSuchElementException();
        }
        for(int i=0;i<this.tupleDescList.size();i++){
            String fieldName = this.tupleDescList.get(i).getFieldName();
            if(fieldName==null){
                continue;
            }
            if(fieldName.equals(name)){
                return i;
            }
        }
        throw new NoSuchElementException();
    }

    /**
     * 获取所有元数据的字节大小