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<?xml version="1.0" encoding="ISO-8859-1"?> |
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<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> |
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|
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<!-- |
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|
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xupdate2xsl: Translate XML document from namespace 'xupdate' to 'xsl'. |
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|
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Purpose of this XML Stylesheet is to implement a set of templates |
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to translate XUpdate lingo into an intermediate xslt stylesheet |
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which actually performs the update to the original xml document |
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in a second step. |
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|
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The required glue code - written in Perl - is available in module |
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XML::XUpdate::XSLT. Please have a look at this in order to write |
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code to use this stylesheet from other language bindings. |
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|
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Please have a look at the XUpdate specs and associated resources: |
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Requirements: http://www.xmldb.org/xupdate/xupdate-req.html |
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Working Draft: http://www.xmldb.org/xupdate/xupdate-wd.html |
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|
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ChangeLog: |
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2003-04-30: first alpha |
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2003-05-01: works: xupdate:insert-after (elements/attributes) |
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2003-05-06: works: xupdate:insert-before (elements/attributes) |
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|
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--> |
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|
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<xsl:output method="xml" /> |
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|
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<!-- 1. This is the passthru logic (copy all untouched nodes). --> |
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<xsl:template name="passthru"><xsl:copy><xsl:apply-templates /></xsl:copy></xsl:template> |
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<!-- activate this --> |
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<xsl:template match="*"><xsl:call-template name="passthru" /></xsl:template> |
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<!-- override some builtin rules: see http://www.w3.org/TR/xslt#built-in-rule --> |
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<xsl:template match="comment()"><xsl:call-template name="passthru" /></xsl:template> |
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|
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|
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<!-- 2. This is the translation part: XUpdate becomes XSLT --> |
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|
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<!-- lib --> |
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<!-- This node "encapsulates" common core infrastructure. --> |
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<xsl:template match="xupdate:modifications"> |
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|
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<!-- <xsl:template name="identity_template_rule"> --> |
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<xsl:element name="xsl:template"> |
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<xsl:attribute name="name">identity_template_rule</xsl:attribute> |
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|
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<!-- An "identity template rule" - original version by Mike Kay, Software AG --> |
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<!-- Please visit [http://p2p.wrox.com/archive/xslt/2001-06/98.asp] --> |
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<!-- Translated to "self hosting xsl": Andreas Motl, andreas.motl@ilo.de --> |
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<!-- FIXME: Could this be used to replace passthru-logic at 1. ? --> |
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<xsl:element name="xsl:copy"> |
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<xsl:element name="xsl:copy-of"> |
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<xsl:attribute name="select">@*</xsl:attribute> |
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</xsl:element> |
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<xsl:element name="xsl:apply-templates" /> |
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</xsl:element> |
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|
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</xsl:element> |
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<!-- </xsl:template> --> |
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|
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<!-- |
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1. Note: Former custom passthru logic (copy all untouched nodes) |
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now completely replaced by Mike Kay's "identity template rule". |
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What is left here is just the required overriding of some builtin rules |
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to (e.g.) not to loose comments. |
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--> |
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<xsl:comment> 1. override built-in rules </xsl:comment> |
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<!-- override some builtin rules: see http://www.w3.org/TR/xslt#built-in-rule --> |
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<xsl:element name="xsl:template"><xsl:attribute name="match">comment()</xsl:attribute> |
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<xsl:element name="xsl:call-template"> |
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<xsl:attribute name="name">identity_template_rule</xsl:attribute> |
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</xsl:element> |
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</xsl:element> |
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|
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<!-- continue with all inline nodes --> |
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<xsl:apply-templates /> |
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|
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</xsl:template> |
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|
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|
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|
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<!-- code --> |
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<!-- This node "encapsulates" infrastructure for handling the directives. --> |
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|
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<!-- Dispatch all "XUpdate Services" here. --> |
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<!-- FIXME: Actually implement action = "CREATE|RETRIEVE|UPDATE|DELETE"!!! --> |
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|
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<!-- |
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xsl for XUpdate Services [2 XUpdate Syntax] [2.3 Modifications] |
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--> |
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|
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<!-- xsl for [2.4 Inserts] --> |
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<xsl:template match="xupdate:insert-after"> |
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<!-- <xsl:variable name="select" select="@select">Hello World!</xsl:variable> --> |
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<xsl:call-template name="findcontext"> |
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<xsl:with-param name="service">Insert</xsl:with-param> |
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<xsl:with-param name="position">after</xsl:with-param> |
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</xsl:call-template> |
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</xsl:template> |
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|
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<!-- xsl for [2.4 Inserts] --> |
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<xsl:template match="xupdate:insert-before"> |
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<xsl:call-template name="findcontext"> |
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<xsl:with-param name="service">Insert</xsl:with-param> |
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<xsl:with-param name="position">before</xsl:with-param> |
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</xsl:call-template> |
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</xsl:template> |
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|
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<!-- xsl for [2.5 Append] --> |
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<xsl:template match="xupdate:append"> |
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<xsl:call-template name="findcontext"> |
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<xsl:with-param name="service">Append</xsl:with-param> |
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<!-- <xsl:with-param name="position">inline</xsl:with-param> --> |
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<xsl:with-param name="test">.</xsl:with-param> |
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</xsl:call-template> |
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</xsl:template> |
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|
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<!-- xsl for [2.6 Update] --> |
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<xsl:template match="xupdate:update"> |
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<xsl:call-template name="findcontext"> |
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<xsl:with-param name="service">Update</xsl:with-param> |
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<!-- <xsl:with-param name="position">after</xsl:with-param> --> |
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<xsl:with-param name="test">.</xsl:with-param> |
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</xsl:call-template> |
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</xsl:template> |
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|
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<!-- xsl for [2.7 Remove] --> |
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<xsl:template match="xupdate:remove"> |
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<xsl:call-template name="findcontext"> |
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<xsl:with-param name="service">Remove</xsl:with-param> |
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<!-- <xsl:with-param name="position">after</xsl:with-param> --> |
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<xsl:with-param name="test">.</xsl:with-param> |
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</xsl:call-template> |
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</xsl:template> |
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|
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<!-- xsl for [2.8 Rename] --> |
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<xsl:template match="xupdate:rename"> |
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<xsl:call-template name="findcontext"> |
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<xsl:with-param name="service">Rename</xsl:with-param> |
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<!-- <xsl:with-param name="position">after</xsl:with-param> --> |
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<xsl:with-param name="test">.</xsl:with-param> |
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</xsl:call-template> |
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</xsl:template> |
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|
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<xsl:template name="findcontext"> |
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|
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<xsl:comment> 2. context finder </xsl:comment> |
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|
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<!-- new of 2003-05-06: introducing parameters here to handle all cases --> |
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<xsl:param name="service" /> |
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<xsl:param name="position" /> |
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<!-- new of 2003-05-07: replacement for test if undef --> |
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<xsl:param name="test" /> |
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|
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<!-- |
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<xsl:comment> |
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service: <xsl:value-of select="$service" /> |
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position: <xsl:value-of select="$position" /> |
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test: <xsl:value-of select="$test" /> |
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</xsl:comment> |
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--> |
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|
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<!-- this resembles some parts of the CRUD API - retranslated to self-hosting xsl --> |
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|
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<!-- V1 --> |
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<!-- <xsl:element name="xsl:template"> --> |
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<!-- <xsl:attribute name="match"><xsl:value-of select="@select" /></xsl:attribute> --> |
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|
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<!-- fallback --> |
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<xsl:element name="xsl:template"> |
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<xsl:attribute name="match">*</xsl:attribute> |
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<xsl:element name="xsl:call-template"> |
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<xsl:attribute name="name">identity_template_rule</xsl:attribute> |
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<!-- <xsl:attribute name="name">passthru</xsl:attribute> --> |
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</xsl:element> |
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</xsl:element> |
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|
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<!-- V2 --> |
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<xsl:element name="xsl:template"> |
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<!-- <xsl:attribute name="match">/addresses/address</xsl:attribute> --> |
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<!-- <xsl:attribute name="match">*</xsl:attribute> --> |
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<xsl:attribute name="match"><xsl:value-of select="@select" /></xsl:attribute> |
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|
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<xsl:element name="xsl:choose"> |
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<!-- <xsl:attribute name="match"><xsl:value-of select="@select" /></xsl:attribute> --> |
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<xsl:element name="xsl:when"> |
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<!-- <xsl:attribute name="test"><xsl:value-of select="@select" /></xsl:attribute> --> |
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<xsl:attribute name="test"><xsl:value-of select="@test" /><xsl:value-of select="$test" /></xsl:attribute> |
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<xsl:choose> |
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<xsl:when test="{$service}=Insert"> |
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|
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<xsl:comment> 2.a. Insert </xsl:comment> |
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|
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<!-- Implementation of "xupdate:insert-before" --> |
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<xsl:choose> |
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<xsl:when test="{$position}=before"> |
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<xsl:apply-templates /> |
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</xsl:when> |
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</xsl:choose> |
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|
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<!-- call the "identity template rule" to passthru all childnodes --> |
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<xsl:element name="xsl:call-template"> |
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<xsl:attribute name="name">identity_template_rule</xsl:attribute> |
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<!-- <xsl:attribute name="name">passthru</xsl:attribute> --> |
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</xsl:element> |
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|
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<!-- Implementation of "xupdate:insert-after" --> |
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<xsl:choose> |
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<xsl:when test="{$position}=after"> |
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<xsl:apply-templates /> |
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</xsl:when> |
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</xsl:choose> |
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</xsl:when> |
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|
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<!-- Implementation of "xupdate:append" --> |
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<xsl:when test="{$service}=Append"> |
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<xsl:comment> 2.b. Append </xsl:comment> |
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<!-- V1 --> |
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<!-- <xsl:apply-templates /> --> |
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<!-- V2 --> |
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<xsl:element name="xsl:copy"> |
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<!-- |
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<xsl:element name="xsl:copy-of"> |
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<xsl:attribute name="select">@*</xsl:attribute> |
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</xsl:element> |
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--> |
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<!-- Keep content ... --> |
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<xsl:element name="xsl:apply-templates" /> |
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<!-- Append this: --> |
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<xsl:apply-templates /> |
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</xsl:element> |
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</xsl:when> |
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|
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<!-- Implementation of "xupdate:update" --> |
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<xsl:when test="{$service}=Update"> |
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<xsl:comment> 2.c. Update </xsl:comment> |
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<!-- V1 --> |
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<!-- <xsl:apply-templates /> --> |
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<!-- V2 --> |
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<xsl:element name="xsl:copy"> |
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<!-- |
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<xsl:element name="xsl:copy-of"> |
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<xsl:attribute name="select">@*</xsl:attribute> |
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</xsl:element> |
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--> |
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<!-- Keep content ... --> |
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<!-- <xsl:element name="xsl:apply-templates" /> --> |
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<!-- Add (replace through) this: --> |
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<xsl:apply-templates /> |
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</xsl:element> |
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</xsl:when> |
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|
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<!-- Implementation of "xupdate:remove" --> |
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<xsl:when test="{$service}=Remove"> |
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<xsl:comment> 2.d. Remove </xsl:comment> |
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</xsl:when> |
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|
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<!-- Implementation of "xupdate:rename" --> |
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<xsl:when test="{$service}=Rename"> |
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<xsl:comment> 2.e. Rename (Remove context and Append modified identity template) </xsl:comment> |
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|
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<xsl:comment> [5.a.] modify node name </xsl:comment> |
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<xsl:element name="xsl:element"> |
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<!-- this renames the node (change the "name"-attribute) --> |
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<xsl:attribute name="name"> |
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<xsl:apply-templates /> |
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</xsl:attribute> |
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<!-- this propagates the original content --> |
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<xsl:element name="xsl:apply-templates" /> |
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</xsl:element> |
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</xsl:when> |
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</xsl:choose> |
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|
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</xsl:element> |
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<xsl:element name="xsl:otherwise"> |
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|
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<!-- call the "identity template rule" to passthru all childnodes --> |
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<xsl:element name="xsl:call-template"> |
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<xsl:attribute name="name">identity_template_rule</xsl:attribute> |
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<!-- <xsl:attribute name="name">passthru</xsl:attribute> --> |
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</xsl:element> |
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|
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<!-- <xsl:apply-templates /> --> |
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</xsl:element> |
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|
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</xsl:element> |
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</xsl:element> |
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<!-- <xsl:apply-templates /> --> |
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|
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</xsl:template> |
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|
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<!-- |
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Rewrite XUpdate elements to XSLT elements. |
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These templates pass through all attributes |
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and childnodes rewriting the tagname only. |
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FIXME: The redundant encoding for each XUpdate |
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element type seems dummy. Could this be stripped |
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shorter somehow sometimes? |
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--> |
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|
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<!-- |
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xsl for [2.4 Inserts] |
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--> |
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|
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<!-- xsl for [2.4.1 Creating Elements] --> |
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<xsl:template match="xupdate:element"> |
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<xsl:comment> 3.a. vivify generic node </xsl:comment> |
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<xsl:element name="xsl:element"> |
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<xsl:copy-of select="@*"/> |
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<xsl:apply-templates /> |
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</xsl:element> |
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</xsl:template> |
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|
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<!-- xsl for [2.4.2 Creating Attributes] --> |
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<xsl:template match="xupdate:attribute"> |
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<xsl:comment> 3.b. vivify node attributes </xsl:comment> |
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<xsl:element name="xsl:attribute"> |
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<xsl:copy-of select="@*"/> |
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<xsl:apply-templates /> |
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</xsl:element> |
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</xsl:template> |
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|
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<!-- xsl for [2.4.3 Creating Text] --> |
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<xsl:template match="xupdate:text"> |
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<xsl:comment> 4.a. vivify text node </xsl:comment> |
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<xsl:element name="xsl:text"> |
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<xsl:copy-of select="@*"/> |
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<xsl:apply-templates /> |
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</xsl:element> |
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</xsl:template> |
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|
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<!-- xsl for [2.4.4 Creating Processing Instructions] --> |
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<xsl:template match="xupdate:processing-instruction"> |
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<xsl:comment> 4.b. vivify PI node </xsl:comment> |
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<xsl:element name="xsl:processing-instruction"> |
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<xsl:copy-of select="@*"/> |
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<xsl:apply-templates /> |
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</xsl:element> |
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</xsl:template> |
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|
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<!-- xsl for [2.4.5 Creating Comments] --> |
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<xsl:template match="xupdate:comment"> |
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<xsl:comment> 4.c. vivify comment node </xsl:comment> |
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<xsl:element name="xsl:comment"> |
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<xsl:copy-of select="@*"/> |
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<xsl:apply-templates /> |
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</xsl:element> |
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</xsl:template> |
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|
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|
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<!-- |
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xsl for [2.9 Variables and Values of Variables] |
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Encapsulates block payload into a named template. |
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--> |
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<xsl:template match="xupdate:variable"> |
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<xsl:comment> 5.a. vivify xsl-element "variable" </xsl:comment> |
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|
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<xsl:element name="xsl:template"> |
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<xsl:attribute name="name">Variables</xsl:attribute> |
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|
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<!-- |
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<xsl:element name="xsl:variable"> |
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<xsl:attribute name="name"><xsl:value-of select="@name" /></xsl:attribute> |
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--> |
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|
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<xsl:choose> |
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|
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<!-- Mode 1 [spec]: just evaluate as (sub-)selection if "select"-attribute is not empty --> |
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<xsl:when test="@select!="> |
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<xsl:element name="xsl:apply-templates"> |
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<xsl:attribute name="select"><xsl:value-of select="@select" /></xsl:attribute> |
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</xsl:element> |
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</xsl:when> |
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|
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<!-- Mode 2 [feature]: in other cases: pass thru the current node w/o any operation(s) on it --> |
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<xsl:otherwise> |
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<xsl:value-of select="." /> |
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</xsl:otherwise> |
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|
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</xsl:choose> |
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|
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<!-- |
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</xsl:element> |
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--> |
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|
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</xsl:element> |
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|
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</xsl:template> |
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|
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<!-- |
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xsl for [2.9 Variables and Values of Variables] |
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Calls encapsulated named template "Variables" |
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for each occourance of an "xupdate:value-of" element. |
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--> |
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<xsl:template match="xupdate:value-of"> |
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<xsl:comment> 5.b. vivify xsl-element "value-of" </xsl:comment> |
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<xsl:element name="xsl:call-template"> |
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<xsl:attribute name="name">Variables</xsl:attribute> |
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</xsl:element> |
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|
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<!-- is this required any more??? --> |
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<xsl:element name="xsl:value-of"> |
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<xsl:copy-of select="@*"/> |
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<!-- <xsl:apply-templates /> --> |
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<!-- this propagates the original content --> |
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<!-- <xsl:element name="xsl:apply-templates"> --> |
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<!-- <xsl:attribute name="" > --> |
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<!-- </xsl:element> --> |
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</xsl:element> |
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</xsl:template> |
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|
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|
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</xsl:stylesheet> |
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