Method insertTuple

src/java/simpledb/storage/HeapPage.java:292–313

Adds the specified tuple to the page; the tuple should be updated to reflect that it is now stored on this page. @throws DbException if the page is full (no empty slots) or tupledesc is mismatch. @param t The tuple to add.

(Tuple t)

     * @param t The tuple to add.
     */
    public void insertTuple(Tuple t) throws DbException {
        // some code goes here
        // not necessary for lab1
        if(getNumEmptySlots()==0){
            throw new DbException("slots if empty");
        }
        //判断元数据是否正常
        if(!t.getTupleDesc().equals(this.td)){
            throw new DbException("insert tuple err");
        }
        for(int i=0;i<numSlots;i++){
            if(tuples[i]!=null){
                continue;
            }
            if(!isSlotUsed(i)){
                tuples[i]  =t;
                tuples[i].setRecordId(new RecordId(pid,i));
                markSlotUsed(i,true);
                return;
            }
        }
    }

    /**
     * Marks this page as dirty/not dirty and record that transaction