package simpledb;
import java.util.*;
import java.io.*;

/**
 * Inserts tuples read from the child operator into
 * the tableid specified in the constructor
 */
public class Insert implements DbIterator {
    
    /**
     * Constructor.
     * @param t The transaction running the insert.
     * @param child The child operator to read tuples to be inserted from.
     * @param tableid The table to insert tuples into.
     */
    public Insert(TransactionId t, DbIterator child, int tableid) 
	throws DbException {
	// some code goes here
    }

    public TupleDesc getTupleDesc() {
	// some code goes here
	return null;
    }
    
    public void open() throws DbException, TransactionAbortedException {
	// some code goes here
    }
    
    public void close() {
	// some code goes here
    }
    
    public void rewind() throws DbException, TransactionAbortedException {
	// some code goes here
    }

    /**
     * DbIterator getNext method.
     * Inserts tuples read from child into the tableid specified by the
     * constructor.  Inserts should be passed through BufferPool.  
     * An instances of BufferPool is available via Database.getBufferPool().  
     * Note that insert
     * DOES NOT need check to see if a particular tuple is a duplicate before
     * inserting it.
     *
     * @return A 1-field tuple containing the number of inserted records.
     * @see Database#getBufferPool
     * @see BufferPool#insertTuple
     * @throws NoSuchElementException When the child iterator has no more 
     * tuples.
     */
    public Tuple getNext() 
	throws NoSuchElementException, TransactionAbortedException, DbException {
	// some code goes here
	return null;
    }
}