A DTD for Products
First, you'll look at reading data from XML files using Xerces. Reading in the product list for the BFG site serves as a good example. To see how this works, you'll begin by writing a DTD to represent products in your shopping cart application so that you can add new books to the database from an XML file (see Listing 14.1).
Listing 14.1. Product.dtd
<?xml version='1.0' encoding='UTF-8' ?> <!ELEMENT File (Product)*> <!ELEMENT Product (Title, Authors, Price, Pubdate, Description, Categories)> <!ATTLIST Product ISBN CDATA #REQUIRED > <!ELEMENT Title (#PCDATA)> <!ELEMENT Authors (Author)+> <!ELEMENT Author (#PCDATA)> <!ELEMENT Price (#PCDATA)> <!ELEMENT Pubdate (#PCDATA)> <!ELEMENT Description (#PCDATA)> <!ELEMENT Categories ... |
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