Answered: The above screen is used to browse the…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

The above screen is used to browse the products table it uses the ProductDAO.java file, it calls the getProductByCriteria() function which should accept a parameter, this parameter should be the criteria that would be built from the two combo boxes and the text box, and queries the products table.
The getProductByCriteria() function should return a list of Product objects that matches the criteria specified.

Modify the function so that it accepts a string paramater consisting of the fields from the combo boxes and a price number from the text box separated by commas and use this string to modify the query in the function to return the desired result set.

public List<Product> getProductByCriteria() //MAKE MODIFICATIONS TO THIS FUNCTION SO IT CAN TAKE PARAMETER(S)

{

if (openConnection())

{

try{

List<Product> items = new ArrayList <> ();

Product temp = null;

String query = "SELECT * FROM products";

stmt = conn.prepareStatement(query);

ResultSet rs = stmt.executeQuery();

while (rs.next()) // iterate through the java resultset

{

temp = new Product(rs.getInt("number"),rs.getString(2),rs.getString("prodname"),rs.getFloat("price"),rs.getInt("onhand"));

items.add(temp);

}

stmt.close();

closeConnection();

return items;

}

catch(SQLException ex){

System.out.println(ex.getMessage());

}

closeConnection();

return null;

}

Product Finder Screen
Product ID
ProdID
4225
4116
5486
6362
1096
9813
Equal
Product Name
Cheese Feta
Beef Ox Tongue
Plasticknivesblack
Arrowroot
Glass Clear 8 Oz
Wine Muscadet Sur Lie
Price
21.77
49.71
11.08
60.64
41.4
34.1
Search
On Hand
I
190
239
139
118
71
5
X

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