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Programming Web Services with Perl

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Spotlight Customer Reviews

Average Customer Rating: 5

Customer Rating: 5
Summary: relevant, practical and well-balanced
Comment: Programming Web Services with Perl is principally a book on implementing solutions using XML-RPC and SOAP in Perl. It also covers complementary and alternative standards such as WSDL, UDDI, and REST in some detail. And on the periphery, it finishes with a whirlwind tour of developing message routing, alternative data encoding within XML, security, transactions, workflow, internationalization, service discovery, extension, and management techniques and specifications.

The book assumes the reader will have the knowledge of an intermediate level Perl programmer. I.e., the reader is assumed to have a working knowledge of references, data structures, and object-oriented Perl. On the other hand no previous knowledge of XML, XML-RPC, SOAP or XML related technologies is required.

It should also be mentioned that both of the authors Randy J. Ray and Pavel Kulchenko are also the principle developers of the most popular XML-RPC and SOAP Perl modules: XML::RPC and SOAP::Lite respectively. That said, the book is not a soap box for the authors to tout the merits of their tools.

Rather, it is a practical book which starts with grounding fundamentals. Readers should walk away with a core understanding of XML-RPC and SOAP and not just a particular tool set for working with them. The authors examine the alternative XML-RPC and SOAP tools, illustrate how they are used, and give practical and even handed reasons why their modules should be preferred. Which comes down to issues of features, active development, support, and the amount of work required to code to a particular interface. They then settle down to a comfortable and thorough guide to XML::RPC and SOAP::Lite.

The topics and issues are illustrated throughout using real world web services. For example creating an XML-RPC client for O'Reilly's Meerkat news wire, or a SOAP client to covert's journal stream to RSS. Code is presented to the reader filtered down to highlight each particular issue as it is discussed. This is nice in that it avoids listing slight variations of the same code multiple times, but on the down side it can also leave the reader flipping back and forth to reassemble an example in their head. Full code for each example is provided in the appendices. And all of the example code may be downloaded from O'Reilly at [their web site].

All-in-all, the book is a thorough practical introduction to working with XML-RPC, SOAP and related technologies. When I started reading the book, I was a bit disappointed to see that it only covered XML-RPC and SOAP related services. When I finished, I was impressed with how very much information they'd managed to pack into so few pages.

And yet, I was left wishing there'd been a more through coverage of interoperability issues between other SOAP implementations and things like custom de-serializers. To be honest interoperability and de-serialization are mentioned, and the authors do an excellent job of referring the reader on to sources for continued reading on most other topics.

The book does an admirable job balancing content, length, and information density. Not to mention an excellent job delivering the information that will still be relevant years and not just weeks from the date published. Most of the topics I'd wished to see covered in more depth are those that are still developing and consequently most likely to become quickly dated. In short a well balanced practical guide to applying XML-RPC and SOAP to solve problems.

Customer Rating: 5
Summary: A "complete reference" is oh so hard to find...
Comment: And yet this book covers every aspect of web service development utilizing perl. As a long time user of the original Frontier::RPC2 module, things have come a long way, and with that greater complexity, the concepts have grown in scope considerably. This IS the book that you want to read if you REALLY want to understand SOAP and XML-RPC. From the XML DTD's to implementation code (either standalone applications or utilizing mod_perl) this book covers everything in between. In all it is a welcome addition to the O'Reilly family of Perl books.

Customer Rating: 5
Summary: Great intro to XML-RPC
Comment: As with all O'Reilly books there's a great intro to the technologies. They take you through how it works, not just how to deploy some code. When you get to the XML-RPC modules, they don't force a solution on you, but give a great tour of what's available and let you pick. For me, the highlight was the intro to Randy J. Ray's RPC::XML modules (he's also one of the authors). I've been fighting with getting the 'system.*' handlers hacked in with other aproaches and it was great to see someone had already figured out such a clean approach. (Which is something since Perl can get reeeaaal ugly!) This book has saved me many days of wasted development.