November 2002
Intermediate to advanced
1120 pages
21h 2m
English
Content preview from Processing XML with Java™: A Guide to SAX, DOM, JDOM, JAXP, and TrAXBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Validity
Programmers have long known the value of verifiable preconditions on functions and methods. (A lot of us carelessly don't use them, but that's a topic for another book.) One of the important innovations of XML is the ability to place preconditions on the data the programs read, and to do this in a simple declarative way. XML allows you to say that every Order element must contain exactly one Customer element; that each Customer element must have an id attribute that contains an XML name token; that every ShipTo element must contain one or more Streets, one City, one State, and one Zip; and so forth. Checking an XML document against this list of conditions is called validation. Validation is an optional step but an important one.
There ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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