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AppML Cases

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This case study demonstrates how to build Internet applications using AppML.

Part I: Accessing Internet Files

  • Accessing a TEXT file
  • Accessing an XML file
  • Accessing a JSON file

Part II: Accessing Internet Databases

  • Listing database data
  • Filtering database data
  • Editing database data

AppML Browser and AppML Server

In this case study, AppML runs both in the browser (appml.js) and on the server (appml.php).

We will use a web server located at http://www.w3ii.com.

All the files and databases are located on the server.

Later in this tutorial you will learn how to simulate a web server in the browser.

Text Files

To demonstrate how to access text files, we have used file much like this:

cd_catalog.txt

Empire Burlesque,Bob Dylan,USA,Columbia,10.90,1985
Hide your heart,Bonnie Tyler,UK,CBS Records,9.90,1988
Greatest Hits,Dolly Parton,USA,RCA,9.90,1982
Still got the blues,Gary Moore,UK,Virgin records,10.20,1990
.
.
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XML Files

To demonstrate how to access XML files, we have used a file much like this:

cd_catalog.xml

<?xml version="1.0" encoding="ISO-8859-1"?>
<CATALOG>
<CD>
  <TITLE>Empire Burlesque</TITLE>
  <ARTIST>Bob Dylan</ARTIST>
  <COUNTRY>USA</COUNTRY>
  <COMPANY>Columbia</COMPANY>
  <PRICE>10.90</PRICE>
  <PUBLISHED>1985</PUBLISHED>
</CD>
<CD>
  <TITLE>Hide your heart</TITLE>
  <ARTIST>Bonnie Tyler</ARTIST>
  <COUNTRY>UK</COUNTRY>
  <COMPANY>CBS Records</COMPANY>
  <PRICE>9.90</PRICE>
  <PUBLISHED>1988</PUBLISHED>
</CD>
.
.
Try It Yourself »

JSON Files

To demonstrate how to access JSON files, we have used a file much like this:

cd_catalog.js

{
"cd" : [
{ "title" : "Empire Burlesque", "artist" : "Bob Dylan", "price" : "10.90" },
{ "title" : "Hide your heart", "artist" : "Bonnie Tyler", "price" : "9.90" },
{ "title" : "Greatest Hits", "artist" : "Dolly Parton", "price" : "9.90" },
{ "title" : "Still got the blues", "artist" : "Gary Moore", "price" : "10.20" },
.
.
Try It Yourself »

Databases

Our test database contains several tables like this:

Customers

Customer Address City Country
Around the Horn 120 Hanover Sq. London UK
Berglunds snabbkjop Berguvsvagen 8 Lulea Sweden
Blauer See Delikatessen Forsterstr. 57 Mannheim Germany
Blondel pere et fils 24, place Kleber Strasbourg France
Bolido Comidas preparadas C/ Araquil, 67 Madrid Spain
Bottom-Dollar Markets 23 Tsawassen Blvd. Tsawassen Canada

Suppliers

Supplier Address City Country
Exotic Liquid 49 Gilbert St. London UK
New Orleans Cajun Delights P.O. Box 78934 New Orleans USA
Grandma Kelly's Homestead 707 Oxford Rd. Ann Arbor USA
Tokyo Traders 9-8 SekimaiMusashino-shi Tokyo Japan
Cooperativa de Quesos 'Las Cabras' Calle del Rosal 4 Oviedo Spain
Mayumi's 92 Setsuko Chuo-ku Osaka Japan
Pavlova, Ltd. 74 Rose St. Moonie Ponds Melbourne Australia
Specialty Biscuits, Ltd. 29 King's Way Manchester UK
PB Kn ckebr d AB Kaloadagatan 13 G teborg Sweden
Refrescos Americanas LTDA Av. das Americanas 12.890 S o Paulo Brazil

Products

Product Quantity Per Unit Unit Price Units In Stock
Chai 10 boxes x 20 bags 18 39
Chang 24 - 12 oz bottles 19 17
Aniseed Syrup 12 - 550 ml bottles 10 13
Chai 10 boxes x 20 bags 18 39
Chef Anton's Gumbo Mix 36 boxes 21 0
Grandma's Boysenberry Spread 12 - 8 oz jars 25 120
Uncle Bob's Organic Dried Pears 12 - 1 lb pkgs. 30 15
Northwoods Cranberry Sauce 12 - 12 oz jars 40 6
Mishi Kobe Niku 18 - 500 g pkgs. 97 29
Ikura 12 - 200 ml jars 31 31

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