XML/XUpdate/xupdate2xsl.xml

<?xml version="1.0" encoding="ISO-8859-1"?>
  
  <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  
      <!--
      
      xupdate2xsl: Translate XML document from namespace 'xupdate' to 'xsl'.
      
      Purpose of this XML Stylesheet is to implement a set of templates 
      to translate XUpdate lingo into an intermediate xslt stylesheet 
      which actually performs the update to the original xml document
      in a second step.
      
      The required glue code - written in Perl - is available in module 
      XML::XUpdate::XSLT. Please have a look at this in order to use 
      this stylesheet from other bindings.
      
      -->
      
      <xsl:output method="xml" />
  
      <!-- 1. This is the passthru logic (copy all untouched nodes). -->
      <xsl:template name="passthru"><xsl:copy><xsl:apply-templates /></xsl:copy></xsl:template>
      <!-- activate this -->
      <xsl:template match="*"><xsl:call-template name="passthru" /></xsl:template>
      <!-- override some builtin rules: see http://www.w3.org/TR/xslt#built-in-rule -->
      <xsl:template match="comment()"><xsl:call-template name="passthru" /></xsl:template>
  
      
      <!-- 2. This is the translation part: XUpdate becomes XSLT -->
      
      <!-- lib -->
      <!-- This node "encapsulates" common core infrastructure. -->
      <xsl:template match="xupdate:modifications">
  
        <!-- <xsl:template name="identity_template_rule"> -->
        <xsl:element name="xsl:template">
          <xsl:attribute name="name">identity_template_rule</xsl:attribute>

              <!-- An "identity template rule" - original version by Mike Kay, Software AG -->
              <!-- Please visit [http://p2p.wrox.com/archive/xslt/2001-06/98.asp] -->
              <!-- Translated to "self hosting xsl": Andreas Motl, andreas.motl@ilo.de -->
              <!-- FIXME: Could this be used to replace passthru-logic at 1. ? -->
              <xsl:element name="xsl:copy">
                <xsl:element name="xsl:copy-of">
                  <xsl:attribute name="select">@*</xsl:attribute>
                </xsl:element>
                <xsl:element name="xsl:apply-templates" />
              </xsl:element>

        </xsl:element>
        <!-- </xsl:template> -->

          <!-- 1. This is the passthru logic (copy all untouched nodes). -->
          <!-- in fact this is the xsl from above translated to be able to be generated by xsl itself! -->
              <xsl:comment> 1. passthru logic </xsl:comment>
              <xsl:element name="xsl:template">
                  <xsl:attribute name="name">passthru</xsl:attribute>
                  <xsl:element name="xsl:copy"><xsl:element name="xsl:apply-templates" /></xsl:element>
              </xsl:element>
              <xsl:element name="xsl:template">
                  <!-- <xsl:attribute name="match">*</xsl:attribute> -->
                  <xsl:attribute name="match">*ab</xsl:attribute>
                  <xsl:element name="xsl:call-template"><xsl:attribute name="name">passthru</xsl:attribute></xsl:element>
              </xsl:element>
              <xsl:element name="xsl:template">
                  <xsl:attribute name="match">comment()</xsl:attribute>
                  <xsl:element name="xsl:call-template"><xsl:attribute name="name">passthru</xsl:attribute></xsl:element>
              </xsl:element>
  
          <!-- continue with all inline nodes -->
              <xsl:apply-templates />
  
      </xsl:template>
  

      <!-- code -->
      <!-- This node "encapsulates" infrastructure for handling the directives. -->
      <!-- FIXME: handle the other ones: append, remove, etc. -->
      <xsl:template match="xupdate:insert-after">
          <xsl:comment> 2. context finder </xsl:comment>
          <!-- <xsl:variable name="select" select="@select">Hello World!</xsl:variable> -->
          
          <!-- this resembles some parts of the CRUD API - retranslated to self-hosting xsl -->

          <!-- V1 -->
          <!-- <xsl:element name="xsl:template"> -->
              <!-- <xsl:attribute name="match"><xsl:value-of select="@select" /></xsl:attribute> -->

          <!-- V2 -->
          <xsl:element name="xsl:template">
              <xsl:attribute name="match">*</xsl:attribute>
              <!-- <xsl:attribute name="match">/addresses/address</xsl:attribute> -->
              <!-- <xsl:attribute name="match"><xsl:value-of select="@select" /></xsl:attribute> -->

          <xsl:element name="xsl:choose">
              <!-- <xsl:attribute name="match"><xsl:value-of select="@select" /></xsl:attribute> -->
            <xsl:element name="xsl:when">
              <!-- <xsl:attribute name="test"><xsl:value-of select="@test" /></xsl:attribute> -->
              <xsl:attribute name="test"><xsl:value-of select="@select" /></xsl:attribute>

              <!-- FIXME: case "insert-before"!!! -->
              <!-- <xsl:apply-templates /> -->

              <!-- call the "identity template rule" to passthru all childnodes -->
              <xsl:element name="xsl:call-template">
                <xsl:attribute name="name">identity_template_rule</xsl:attribute>
                <!-- <xsl:attribute name="name">passthru</xsl:attribute> -->
              </xsl:element>

              <!-- FIXME: case "insert-after"!!! -->
              <xsl:apply-templates />

            </xsl:element>
            <xsl:element name="xsl:otherwise">

              <!-- call the "identity template rule" to passthru all childnodes -->
              <xsl:element name="xsl:call-template">
                <xsl:attribute name="name">identity_template_rule</xsl:attribute>
                <!-- <xsl:attribute name="name">passthru</xsl:attribute> -->
              </xsl:element>

              <!-- <xsl:apply-templates /> -->

            </xsl:element>

          </xsl:element>
          </xsl:element>
          
          <!-- <xsl:apply-templates /> -->
          
      </xsl:template>
  
      <!-- This node passes through all attributes and childnodes rewriting the tagname only. -->
      <xsl:template match="xupdate:element">
          <xsl:comment> 3.a. vivify elements </xsl:comment>
          <xsl:element name="xsl:element">
              <xsl:copy-of select="@*"/>
              <xsl:apply-templates />
          </xsl:element>
      </xsl:template>
  
      <!-- This node passes through all attributes and childnodes rewriting the tagname only. -->
      <xsl:template match="xupdate:attribute">
          <xsl:comment> 3.b. vivify attributes </xsl:comment>
          <xsl:element name="xsl:attribute">
              <xsl:copy-of select="@*"/>
              <xsl:apply-templates />
          </xsl:element>
      </xsl:template>
  
  </xsl:stylesheet>
  
1	joko	1.1	<?xml version="1.0" encoding="ISO-8859-1"?>
2
3			<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
4
5	joko	1.3	<!--
6
7			xupdate2xsl: Translate XML document from namespace 'xupdate' to 'xsl'.
8
9	joko	1.1	Purpose of this XML Stylesheet is to implement a set of templates
10			to translate XUpdate lingo into an intermediate xslt stylesheet
11			which actually performs the update to the original xml document
12	joko	1.3	in a second step.
13
14	joko	1.1	The required glue code - written in Perl - is available in module
15	joko	1.3	XML::XUpdate::XSLT. Please have a look at this in order to use
16			this stylesheet from other bindings.
17
18	joko	1.1	-->
19
20			<xsl:output method="xml" />
21
22			<!-- 1. This is the passthru logic (copy all untouched nodes). -->
23			<xsl:template name="passthru"><xsl:copy><xsl:apply-templates /></xsl:copy></xsl:template>
24			<!-- activate this -->
25			<xsl:template match="*"><xsl:call-template name="passthru" /></xsl:template>
26			<!-- override some builtin rules: see http://www.w3.org/TR/xslt#built-in-rule -->
27			<xsl:template match="comment()"><xsl:call-template name="passthru" /></xsl:template>
28
29	joko	1.2
30	joko	1.1	<!-- 2. This is the translation part: XUpdate becomes XSLT -->
31
32	joko	1.2	<!-- lib -->
33			<!-- This node "encapsulates" common core infrastructure. -->
34	joko	1.1	<xsl:template match="xupdate:modifications">
35
36	joko	1.2	<!-- <xsl:template name="identity_template_rule"> -->
37			<xsl:element name="xsl:template">
38			<xsl:attribute name="name">identity_template_rule</xsl:attribute>
39
40			<!-- An "identity template rule" - original version by Mike Kay, Software AG -->
41			<!-- Please visit [http://p2p.wrox.com/archive/xslt/2001-06/98.asp] -->
42			<!-- Translated to "self hosting xsl": Andreas Motl, andreas.motl@ilo.de -->
43			<!-- FIXME: Could this be used to replace passthru-logic at 1. ? -->
44			<xsl:element name="xsl:copy">
45			<xsl:element name="xsl:copy-of">
46			<xsl:attribute name="select">@*</xsl:attribute>
47			</xsl:element>
48			<xsl:element name="xsl:apply-templates" />
49			</xsl:element>
50
51			</xsl:element>
52			<!-- </xsl:template> -->
53
54	joko	1.1	<!-- 1. This is the passthru logic (copy all untouched nodes). -->
55			<!-- in fact this is the xsl from above translated to be able to be generated by xsl itself! -->
56			<xsl:comment> 1. passthru logic </xsl:comment>
57			<xsl:element name="xsl:template">
58			<xsl:attribute name="name">passthru</xsl:attribute>
59			<xsl:element name="xsl:copy"><xsl:element name="xsl:apply-templates" /></xsl:element>
60			</xsl:element>
61			<xsl:element name="xsl:template">
62	joko	1.3	<!-- <xsl:attribute name="match">*</xsl:attribute> -->
63			<xsl:attribute name="match">*ab</xsl:attribute>
64	joko	1.1	<xsl:element name="xsl:call-template"><xsl:attribute name="name">passthru</xsl:attribute></xsl:element>
65			</xsl:element>
66			<xsl:element name="xsl:template">
67			<xsl:attribute name="match">comment()</xsl:attribute>
68			<xsl:element name="xsl:call-template"><xsl:attribute name="name">passthru</xsl:attribute></xsl:element>
69			</xsl:element>
70
71			<!-- continue with all inline nodes -->
72			<xsl:apply-templates />
73
74			</xsl:template>
75
76	joko	1.2
77
78
79
80			<!-- code -->
81	joko	1.1	<!-- This node "encapsulates" infrastructure for handling the directives. -->
82	joko	1.3	<!-- FIXME: handle the other ones: append, remove, etc. -->
83	joko	1.1	<xsl:template match="xupdate:insert-after">
84			<xsl:comment> 2. context finder </xsl:comment>
85	joko	1.2	<!-- <xsl:variable name="select" select="@select">Hello World!</xsl:variable> -->
86
87			<!-- this resembles some parts of the CRUD API - retranslated to self-hosting xsl -->
88
89			<!-- V1 -->
90			<!-- <xsl:element name="xsl:template"> -->
91			<!-- <xsl:attribute name="match"><xsl:value-of select="@select" /></xsl:attribute> -->
92
93			<!-- V2 -->
94			<xsl:element name="xsl:template">
95	joko	1.3	<xsl:attribute name="match">*</xsl:attribute>
96			<!-- <xsl:attribute name="match">/addresses/address</xsl:attribute> -->
97			<!-- <xsl:attribute name="match"><xsl:value-of select="@select" /></xsl:attribute> -->
98	joko	1.2
99			<xsl:element name="xsl:choose">
100			<!-- <xsl:attribute name="match"><xsl:value-of select="@select" /></xsl:attribute> -->
101			<xsl:element name="xsl:when">
102	joko	1.3	<!-- <xsl:attribute name="test"><xsl:value-of select="@test" /></xsl:attribute> -->
103	joko	1.2	<xsl:attribute name="test"><xsl:value-of select="@select" /></xsl:attribute>
104
105	joko	1.3	<!-- FIXME: case "insert-before"!!! -->
106	joko	1.2	<!-- <xsl:apply-templates /> -->
107
108			<!-- call the "identity template rule" to passthru all childnodes -->
109			<xsl:element name="xsl:call-template">
110			<xsl:attribute name="name">identity_template_rule</xsl:attribute>
111	joko	1.3	<!-- <xsl:attribute name="name">passthru</xsl:attribute> -->
112	joko	1.2	</xsl:element>
113
114	joko	1.3	<!-- FIXME: case "insert-after"!!! -->
115	joko	1.2	<xsl:apply-templates />
116
117			</xsl:element>
118			<xsl:element name="xsl:otherwise">
119
120			<!-- call the "identity template rule" to passthru all childnodes -->
121			<xsl:element name="xsl:call-template">
122			<xsl:attribute name="name">identity_template_rule</xsl:attribute>
123	joko	1.3	<!-- <xsl:attribute name="name">passthru</xsl:attribute> -->
124	joko	1.2	</xsl:element>
125	joko	1.3
126			<!-- <xsl:apply-templates /> -->
127	joko	1.2
128			</xsl:element>
129
130			</xsl:element>
131			</xsl:element>
132
133			<!-- <xsl:apply-templates /> -->
134
135	joko	1.1	</xsl:template>
136
137			<!-- This node passes through all attributes and childnodes rewriting the tagname only. -->
138			<xsl:template match="xupdate:element">
139	joko	1.2	<xsl:comment> 3.a. vivify elements </xsl:comment>
140	joko	1.1	<xsl:element name="xsl:element">
141			<xsl:copy-of select="@*"/>
142			<xsl:apply-templates />
143			</xsl:element>
144			</xsl:template>
145
146			<!-- This node passes through all attributes and childnodes rewriting the tagname only. -->
147			<xsl:template match="xupdate:attribute">
148	joko	1.2	<xsl:comment> 3.b. vivify attributes </xsl:comment>
149	joko	1.1	<xsl:element name="xsl:attribute">
150			<xsl:copy-of select="@*"/>
151			<xsl:apply-templates />
152			</xsl:element>
153			</xsl:template>
154
155			</xsl:stylesheet>
156
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