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Seminar on SOA
Seminar on Service Oriented Architecture
XML and XML Transformation Using XSLT
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Seminar on SOA
XML/XSLT
• What is XML?
• What is XSLT?
• From XML to HTML using XSLT
• The XSLT processing model
• An Example from FpML
• Homework
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Seminar on SOA
What is XML?
XML is an acronym that stands for the eXtensible Markup Language.
It is a flexible framework which can be used to create new customizedmarkup languages. It’s a meta-language.
XHTML, for example, is one XML markup language with a tag set:<P> <H1> ….
XML, on the other hand, does not define any particular set of tags. Itallows you to create your own tag set and it allows you to define howthe tag set is organized.
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Seminar on SOA
What is XML’s primary purpose?
• Separating data from presentation: The range of internet capable devices is growing- mobile phones, pagers, TV sets, web browsers, in car computers, may have different presentation requirements. Examples include HTML 5 for browsers, Android’s UI Layout language, and MXML for Flash Players.
• Transmitting data between applications: The amount of data exchanged between organizations is increasing. SOAP is an XML language. Rest style web services often return XML. Ajax responses are often in XML.
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Seminar on SOA
Some XML Languages
RSS RDFaAtom WSDLSOAP BPELXHTML WMLChemical Markup Language OWLVoiceXML RDFXBRL SVGDarwin Information Typing Architecture(DITA) RIFXSLT WS-CDLMXML MathML FpML CDAGML
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Be sure to know each of these.
Seminar on SOA
What is XSLT?
XSLT stands for eXtensible Style Sheet Language : Transformations
XSLT is an XML language for transforming the structure of an XMLDocument.
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Seminar on SOA
What is XSLT’s primary purpose?
• With the widespread adoption of XML languages there is a be a need to extract and combine data from one set of XML documents to generate another set of XML documents.
XSLT
• In this presentation we will use XSLT to convert XML documents to HTML. • Other XML languages are just as easily processed - ESB’s, for example, make use of XSLT for message transformation.
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Seminar on SOA
XML to HTML using XSLT
(1) The XML document and the associated XSL style sheet mayboth be transferred to the browser.
(2) The server may apply the style sheet to an XML documentand the result may be sent to the client.
(3) The transformation may occur before the data is placed on the server.
Xalan may be used for (2) or (3). All major browsers for (1). XSLT processors are callable from JavaScript or Java or … 8
Seminar on SOA
XML to HTML using XSLT
•A bibliography expressed in xml is
converted to a bibliography in html
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Seminar on SOA
bib.xml<?xml version="1.0" ?>
<bib>
</bib>
<book isbn = "1-861003-12-9"> <title> XSLT Programmer's Reference </title> <author> Michael Kay </author> </book>
<paper> <title> GoTo Statement Considered Harmful </title> <author> Edsger Dijkstra</author> </paper><book isbn = "0-201485-43-5"> <title> XML and Java Developing Web Application</title> <author> Maruyama </author> <author> Tamura</author> <author> Uramoto </author></book>
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Seminar on SOA
bib.xsl
<xsl:template match = "/">
</xsl:template>
<html> <title>ISBN Numbers</title> <body> <h1>ISBN Numbers</h1> <ul><xsl:apply-templates/></ul> </body> </html>
<?xml version="1.0"?>
<!-- XSL to produce a list of ISBN numbers in HTML -->
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
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Seminar on SOA
bib.xsl (continued)
<xsl:template match = "book"> <li> <xsl:value-of select = "@isbn" /> </li> </xsl:template>
<xsl:template match = "paper"></xsl:template>
</xsl:stylesheet>12
Seminar on SOA
bib.html
<html><title>ISBN Numbers</title><body><h1>ISBN Numbers</h1><ul> <li>1-861003-12-9</li> <li>0-201485-43-5</li></ul></body></html>
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Seminar on SOA
Bib.html
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Seminar on SOA
bib.xml<?xml version="1.0" ?>
<bib>
</bib>
<book isbn = "1-861003-12-9"> <title> XSLT Programmer's Reference </title> <author> Michael Kay </author> </book>
<paper> <title> GoTo Statement Considered Harmful </title> <author> Edsger Dijkstra</author> </paper><book isbn = "0-201485-43-5"> <title> XML and Java Developing Web Application</title> <author> Maruyama </author> <author> Tamura</author> <author> Uramoto </author></book>
/
bib
book paper book
title author
XSLT Prog… Michael Kay
::
::
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Seminar on SOA
bib.html
<html><title>ISBN Numbers</title><body><h1>ISBN Numbers</h1><ul> <li>1-861003-12-9</li> <li>0-201485-43-5</li></ul></body></html>
/
html
title body
ISBN.. h1 ul
li li
1-86…0-201..
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Seminar on SOA
bib2.xsl<?xml version="1.0"?><!-- XSL to produce a list of titles and authors in HTML --><xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0"> <xsl:template match = "/">
<html> <title>Author(s)/Title</title> <body> <h1>Author(s)/Title</h1> <ul><xsl:apply-templates/></ul> </body> </html> </xsl:template>
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Seminar on SOA
bib2.xsl (continued)<xsl:template match = "book|paper"> <li> <xsl:for-each select = "author"> <xsl:value-of select = "." /> </xsl:for-each> <i> <xsl:value-of select = "title"/> </i> </li> </xsl:template></xsl:stylesheet>
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Seminar on SOA
bib2.html<html><title>Author(s)/Title</title><body><h1>Author(s)/Title</h1><ul> <li> Michael Kay <i> XSLT Programmer's Reference </i></li> <li> Edsger Dijkstra<i> GoTo Statement Considered Harmful </i></li> <li> Maruyama Tamura Uramoto <i> XML and Java Developing Web Application</i></li></ul></body></html>
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Seminar on SOA
bib2.html
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Seminar on SOA
Bib3.xsl<?xml version="1.0"?><xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<!-- Printing the last three authors in reverse order --> <xsl:template match = "/"> <html> <title>Author(s)</title> <body> <h1>Author(s)</h1> <ul> <xsl:apply-templates select = "/bib/book[2]/author[3]"/> <xsl:apply-templates select = "/bib/book[2]/author[2]"/> <xsl:apply-templates select = "/bib/book[2]/author[1]"/> </ul> </body> </html> </xsl:template>
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Seminar on SOA
Bib3.xsl (Continued)<xsl:template match = "author"> <li> <xsl:value-of select = "."/> </li> </xsl:template></xsl:stylesheet>
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Seminar on SOA
Bib3.html
<html><title>Author(s)</title><body><h1>Author(s)</h1><ul><li> Uramoto </li><li> Tamura</li><li> Maruyama </li></ul></body></html>
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Seminar on SOA
XML to HTML using XSLT
•A poem expressed in xml is converted
to a poem expressed in html
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Seminar on SOA
Poem.xml (1 of 3)<?xml version="1.0" ?>
<!-- A poem in XML Example taken from "XSLT Programmer's reference Michael Kay-->
<poem> <author> Rupert Brooke </author> <date> 1912 </date> <title>Song</title>
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Seminar on SOA
Poem.xml (2 of 3)<stanza> <line>And suddenly the wind comes soft, </line> <line>And Spring is here again;</line> <line>And the hawthorn quickens with buds of green</line> <line>And my heart with buds of pain.</line> </stanza>
<stanza> <line>My heart all Winter lay so numb,</line> <line>The earth so dead and frore,</line> <line>That I never thought the Spring would come again</line> <line>Or my heart wake any more.</line> </stanza> 27
Seminar on SOA
Poem.xml (3 of 3)
<stanza> <line>But Winter's broken and earth has woken, </line> <line>And the small birds cry again;</line> <line>And the hawthorn hedge puts forth its buds,</line> <line>And my heart puts forth its pain.</line> </stanza></poem>
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Seminar on SOA
Poem.html
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Seminar on SOA
Poem.xsl (1 of 4)<?xml version="1.0"?><!-- XSL to produce an HTML encoded poem XSLT Programmer's reference, Michael Kay-->
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:template match = "poem"> <html> <head> <title> <xsl:value-of select="title"/> </title> </head>
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Seminar on SOA
Poem.xsl (2 of 4)
<body> <xsl:apply-templates select = "title"/> <xsl:apply-templates select = "author"/> <xsl:apply-templates select = "stanza"/> <xsl:apply-templates select = "date"/> </body> </html> </xsl:template>
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Seminar on SOA
Poem.xsl (3 of 4)<xsl:template match = "title"> <div align="center"><h1><xsl:value-of select="."/></h1></div> </xsl:template> <xsl:template match = "author"> <div align="center"><h2>By <xsl:value-of select="."/></h2></div> </xsl:template>
<xsl:template match = "date"> <p><i><xsl:value-of select="."/></i></p> </xsl:template>
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Seminar on SOA
Poem.xsl (4 of 4)<xsl:template match="stanza"> <p><xsl:apply-templates select="line"/></p> </xsl:template>
<xsl:template match = "line"> <xsl:if test="position() mod 2 = 0">  </xsl:if> <xsl:value-of select="."/><br/> </xsl:template>
</xsl:stylesheet> Nonbreaking space not includedautomatically in xmlas in html 33
Seminar on SOA
XSLT’s Processing Model
Consider the following XML file
<person> <name>Alan</name> <age>19</age> <email>alan@his.org</email> </person>
We’ll look at a way to view this tree as a set.
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Seminar on SOA
<person> <name>Alan</name> <age>19</age> <email>alan@his.org </email> </person>
person
name age
Alan 19
alan@
/
This is the normal way an XSLT programmer views the document.
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Seminar on SOA
<person> <name>Alan</name> <age>19</age> <email>alan@his.org</email> </person>
We can represent this tree as a set.
{person : { name : alan, age : 19, email : alan@his.org} }
A tree will be represented as a set of ordered pairs.
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Seminar on SOA
Another example
<biblio> <book> <author> Smith </author> <author> Jones </author> <date> 1976 </date> </book> <book> <author> Bell </author> <date> 1999 </date> </book> <paper> <title> Public key encryption</title> <author> Kensworth </author> </paper></biblio>
{biblio:{ book:{author:Smith,author:Jones,date:1976},
book:{author:Bell,date:1999},
paper:{title:Public key encryption, author:Kensworth}
}
}
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Seminar on SOA
XSLT uses Structural Recursion
We apply transformation rules in a top-down manner.Non-leafs normally generate recursive calls.
An XSLT stylesheet can be viewed as a function thatdefines a transformation.
O = S(I)
I is the input document S is the stylesheet O is the output document
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Seminar on SOA
An example
f(v) = if isInt(v) then intTwoString(v) else vf({}) = {}f({r : t }) = { r : f(t) }f( t1 union t2 ) = f(t1) union f(t2)
// This program replaces integers with strings.
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Seminar on SOA
An example
f(v) = if isInt(v) then intTwoString(v) else vf({}) = {}f({r : t }) = { r : f(t) }f( t1 union t2 ) = f(t1) union f(t2)
f({biblio:{ book:{author:Smith, author:Jones, date:1976}, book:{author:Bell,date:1999}, paper:{title:Public key encryption, author:Kensworth} }}) =
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Seminar on SOA
f(v) = if isInt(v) then intTwoString(v) else vf({}) = {}f({r : t }) = { r : f(t) }f( t1 union t2 ) = f(t1) union f(t2)
= {biblio: f({ book:{author:Smith, author:Jones, date:1976}, book:{author:Bell,date:1999}, paper:{title:Public key encryption, author:Kensworth} } ) }
We have a match
An example
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Seminar on SOA
f({ book:{author:Smith, author:Jones, date:1976}, book:{author:Bell,date:1999}, paper:{title:Public key encryption, author:Kensworth} }) =
f({ book:{author:Smith, author:Jones, date:1976}, book:{author:Bell,date:1999} })
union
f({ paper:{title:Public key encryption, author:Kensworth} })
f( t1 union t2 ) = f(t1) union f(t2) We have a match
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Seminar on SOA
f(v) = if isInt(v) then intTwoString(v) else v
f({}) = {}
f({r : t }) = { r : f(t) }
f( t1 union t2 ) = f(t1) union f(t2)
We have a match
f({ book:{author:Smith, author:Jones, date:1976}, book:{author:Bell,date:1999} }) =
f( {book :{author:Smith, author:Jones, date:1976}}) unionf( {book:{author:Bell,date:1999}}
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Seminar on SOA
f(v) = if isInt(v) then intTwoString(v) else v
f({}) = {}
f({r : t }) = { r : f(t) }
f( t1 union t2 ) = f(t1) union f(t2)
We have a match
f( {book :{author:Smith, author:Jones, date:1976}}) =
{ book : f({author:Smith, author:Jones, date:1976}) }
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Seminar on SOA
f(v) = if isInt(v) then intTwoString(v) else v
f({}) = {}
f({r : t }) = { r : f(t) }
f( t1 union t2 ) = f(t1) union f(t2)
We have a match
f({author:Smith, author:Jones, date:1976}) =
f({author:Smith}) union f({author : Jones, date:1976})
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Seminar on SOA
f(v) = if isInt(v) then intTwoString(v) else v
f({}) = {}
f({r : t }) = { r : f(t) }
f( t1 union t2 ) = f(t1) union f(t2)
We have a match
f({author:Smith}) = { author : f (Smith) }
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Seminar on SOA
f(v) = if isInt(v) then intTwoString(v) else v
f({}) = {}
f({r : t }) = { r : f(t) }
f( t1 union t2 ) = f(t1) union f(t2)
We have a match
{ author : f (Smith) } = { author : Smith }
… and so on …
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Seminar on SOA
f({biblio:{ book:{author:Smith, author:Jones, date:1976},
book:{author:Bell,date:1999},
paper:{title:Public key encryption,
author:Kensworth}
}
}) = {biblio:{book:{author:Smith, author:Jones, date:”1976”},
book:{author:Bell,date:”1999”},
paper:{title:Public key encryption,
author:Kensworth}
}
} 48
Seminar on SOA
An Example From The Financial World (FpML)
FpML (Financial products Markup Language) is a new protocol to enable e-commerce activities in the field of financial derivatives.It is based on XML (Extensible Markup Language), the standardmeta-language for describing data shared between applications.Ultimately, it will allow for the electronic integration of a rangeof services, from electronic trading and confirmations toportfolio specification for risk analysis. All categories of over-the-counter (OTC) derivatives will eventually beincorporated into the standard; however, the initial release willfocus on interest rate swaps and Forward Rate Agreements (FRAs).
Taken from www.fpml.org. 49
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Who put FpML together?Bank of America BNP Paribas Chase Manhattan Bank Citigroup Concordia Net Credit Suisse First Boston Deutsche Bank Extensibility FinancialFusion Fuji Capital Markets
Goldman Sachs IBM J.P. Morgan Morgan Stanley Dean Witter PricewaterhouseCoopers Reuters SunGard Trading and Risk Systems S.W.I.F.T. Society for Worldwide Interbank Financial TelecommunicationUBS Warburg webMethods
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Seminar on SOA
An FpML Document
<?xml version="1.0" standalone="no"?>
<!-- Copyright (c) 1999 by J.P.Morgan and PricewaterhouseCoopers.PricewaterhouseCoopers refers to the individual member firms of the World wide PricewaterhouseCoopers organization. All rights reserved.--><!-- version 1.0b2 : August 6, 1999 -->
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Seminar on SOA
<fpml:FpML xmlns:fpml='urn:fpml-FpML' xmlns:m='urn:fpml-money' xmlns:r='urn:fpml-rate'> <fpml:Trade> <fpml:tradeIDs> <tid:TradeIDs xmlns:tid="urn:fpml-TradeID"> <tid:TradeID> <tid:partyReference>XYZ Investement Bank</tid:partyReference> <tid:transactionReferenceNumber>237732</tid:transactionReferenceNumber> </tid:TradeID> <tid:TradeID> <tid:partyReference>ABC Investments</tid:partyReference> <tid:transactionReferenceNumber>1230</tid:transactionReferenceNumber> </tid:TradeID> </tid:TradeIDs> </fpml:tradeIDs>
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Seminar on SOA
<fpml:product> <fpswp:FXSwap xmlns:fpswp="urn:fpml-FX-Product-SwapType"> <fpswp:productID>P123908</fpswp:productID> <!-- at the moment valid value is FXSwap. it could
be expanded later --> <fpswp:productType>FXSwap</fpswp:productType> <fpswp:nearLeg> <ftsl:FXLegTemplate xmlns:ftsl="urn:fpml-FX-Template-Leg" xmlns:fxs="urn:fpml-shared-FX"> <fxs:ccy1>SFC</fxs:ccy1> <fxs:ccy2>GBP</fxs:ccy2> <fxs:ccy1BuyerReference>ABC Investments</fxs:ccy1BuyerReference> <fxs:ccy2BuyerReference>XYZ Investement Bank</fxs:ccy2BuyerReference> <fxs:ccy1Amount> <m:Money> <m:ccy>SFC</m:ccy> <m:amount>15600000</m:amount> </m:Money> </fxs:ccy1Amount> 53
Seminar on SOA
<fxs:ccy2Amount> <m:Money> <m:ccy>GBP</m:ccy> <m:amount>10000000</m:amount> </m:Money> </fxs:ccy2Amount> <fxs:settlementDate>1999-08-01</fxs:settlementDate> <fxs:exchangeRate> <r:FXRate> <r:ccy1>SFC</r:ccy1> <r:ccy2>GBP</r:ccy2> <r:type>offer</r:type> <r:quoteBasis>CCY1PERCCY2</r:quoteBasis> <r:rate>1.56</r:rate> </r:FXRate> </fxs:exchangeRate> </ftsl:FXLegTemplate> </fpswp:nearLeg>
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Seminar on SOA
<fpswp:farLeg> <ftsl:FXLegTemplate xmlns:ftsl="urn:fpml-FX-Template-Leg" xmlns:fxs="urn:fpml-shared-FX"> <fxs:ccy1>SFC</fxs:ccy1> <fxs:ccy2>GBP</fxs:ccy2> <fxs:ccy1BuyerReference>XYZ Investement Bank</fxs:ccy1BuyerReference> <fxs:ccy2BuyerReference>ABC Investments</fxs:ccy2BuyerReference> <fxs:ccy1Amount> <m:Money> <m:ccy>SFC</m:ccy> <m:amount>16600000</m:amount> </m:Money> </fxs:ccy1Amount> <fxs:ccy2Amount> <m:Money> <m:ccy>GBP</m:ccy> <m:amount>10000000</m:amount> </m:Money> </fxs:ccy2Amount> 55
Seminar on SOA
<fxs:settlementDate>1999-09-01</fxs:settlementDate> <fxs:exchangeRate> <r:FXRate> <r:ccy1>SFC</r:ccy1> <r:ccy2>GBP</r:ccy2> <r:type>offer</r:type> <r:quoteBasis>CCY1PERCCY2</r:quoteBasis> <r:rate>1.66</r:rate> </r:FXRate> </fxs:exchangeRate> </ftsl:FXLegTemplate> </fpswp:farLeg> </fpswp:FXSwap> </fpml:product>
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Seminar on SOA
<fpml:partyInformation> <pty:PartyInformation xmlns:pty="urn:fpml-party" xmlns:a="urn:fpml-contact"> <pty:tradeParties> <pty:Party name="ABC_Trust">
<pty:partyType>COUNTERPARTY</pty:partyType> <pty:corporateInformation> <pty:CorporateInformation> <pty:shortName>ABC Investments</pty:shortName> </pty:CorporateInformation> </pty:corporateInformation> <pty:confirmInformation> <pty:ConfirmInformation> <pty:primaryConfirmContact>
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Seminar on SOA
<a:Contact> <a:contactName>Jacob Smith</a:contactName> <a:contactOrganizationName>ABC Investments</a:contactOrganizationName> <a:emailAddress>jsmith@abc.com</a:emailAddress> <a:phoneNumber>212-888-1234</a:phoneNumber> <a:faxNumber>212-888-8888</a:faxNumber> <a:contactAddress> <a:Address> <a:streetAddress> <a:StreetAddress> <a:streetLine>123, Park Avenue</a:streetLine> </a:StreetAddress> </a:streetAddress> <a:city>New York</a:city> <a:state>NY</a:state> <a:country>US</a:country> <a:postalCode>10387</a:postalCode> </a:Address> </a:contactAddress> </a:Contact>
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Seminar on SOA
</pty:primaryConfirmContact> </pty:ConfirmInformation> </pty:confirmInformation> <pty:settlementInformation> <pty:SettlementInstructions> <pty:settlementContact> <a:Contact> <a:contactName>Jacob Smith</a:contactName> <a:contactOrganizationName>Trade Settlements</a:contactOrganizationName> <a:phoneNumber>212-888-1434</a:phoneNumber> <a:faxNumber>212-888-6668</a:faxNumber> </a:Contact> </pty:settlementContact>
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Seminar on SOA
<pty:paymentInstructions> <pty:PaymentInstructions> <pty:settlementCurrency>GBP</pty:settlementCurrency> <pty:payFromName>ABC Bank PLC</pty:payFromName> <pty:correspondentInformation> <pty:FIRoutingInformation> <pty:fiName>ABC Bank PLC</pty:fiName> <pty:fiAddress> <a:Address> <a:city>London</a:city> <a:country>UK</a:country> </a:Address> </pty:fiAddress> <pty:fiAccountNumber>123456</pty:fiAccountNumber> <pty:fiRoutingID>ABC45678UK33</pty:fiRoutingID> <pty:fiRoutingIDType>SwiftBIC</pty:fiRoutingIDType> </pty:FIRoutingInformation> </pty:correspondentInformation>
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<pty:intermediaryInformation> <pty:FIRoutingInformation> <pty:fiName>XYZ Bank PLC</pty:fiName> <pty:fiAccountNumber>293774</pty:fiAccountNumber> </pty:FIRoutingInformation> </pty:intermediaryInformation> <pty:beneficiaryInformation> <pty:FIRoutingInformation> <pty:fiName>ABC Brokers</pty:fiName> <pty:fiAccountNumber>/883733333</pty:fiAccountNumber> <pty:fiReferenceText>For the account of Harry Smith-/883733333 </pty:fiReferenceText> </pty:FIRoutingInformation> </pty:beneficiaryInformation> </pty:PaymentInstructions> </pty:paymentInstructions> </pty:SettlementInstructions> </pty:settlementInformation> </pty:Party>
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Seminar on SOA
<!--Also expected is the full settlement instructions for:<pty:partyReferenceName>XYZ Investment bank</pty:partyReferenceName>...--> </pty:tradeParties> </pty:PartyInformation> </fpml:partyInformation> </fpml:Trade></fpml:FpML>
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Seminar on SOA
FpML to HTML using XSLT
<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:tid="urn:fpml-TradeID"
version="1.0">
<!-- Display party reference data -->
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Seminar on SOA
<xsl:template match = "/" > <html> <title>Foreign Exchange Swap</title> <body> <xsl:apply-templates/> </body> </html>
</xsl:template>
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<xsl:template match = "* | text()"> <xsl:apply-templates/>
</xsl:template>
<xsl:template match="tid:partyReference"> <p> <xsl:value-of select="."/> </p>
</xsl:template> </xsl:stylesheet>
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Wireless XSL
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Seminar on SOA
WML<?xml version="1.0"?> <!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN“ "http://www.wapforum.org/DTD/wml_1.1.xml">
<wml> <template> <do type="back" label="Back"> <prev/> </do> </template> <card id="main" title="Welcome to my WAP"> <p align="center">I can't say much, since this screen is tiny.<br/> Why don't you visit my <a href="#fave">favorite WAP links.</a> </p> </card>
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<card id="fave" title="Favorite WAP Links"> <p align="center">These are some WAP sites I would love, if they existed.</p> <p align="left"> <a href="wap.cats.com”>Dog pictures</a><br/> <a href="wap.weather.com">The weather</a><br/> <a href="wap.jellybeans.org">One click jelly bean ordering</a> </p> </card> </wml>
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HomeworkConsider XML document I
<a> <e> <b> <c>1</c> <c>2</c> </b> <a> <c>3</c> </a> </e> </a>
(1) Write an XSLT stylesheet thatgenerates the same documentbut with all element namescapitalized. Use Xalan.
(2) Design a function f = O(I)that defines f(v), f({}) ,f({r : t }) and f( t1 union t2 ) so that I is transformedas described in (1).
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Bibliography
XSLT Programmer’s Reference, Michael Kay, Wrox
Data on the Web, Abiteboul, Buneman, Suciu, Morgan Kaufmann
XML Bible, Elliotte Rusty Harold, IDG Books
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