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	<?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	<!--
6
7	xupdate2xsl: Translate XML document from namespace 'xupdate' to 'xsl'.
8
9	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	in a second step.
13
14	The required glue code - written in Perl - is available in module
15	XML::XUpdate::XSLT. Please have a look at this in order to use
16	this stylesheet from other bindings.
17
18	-->
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
30	<!-- 2. This is the translation part: XUpdate becomes XSLT -->
31
32	<!-- lib -->
33	<!-- This node "encapsulates" common core infrastructure. -->
34	<xsl:template match="xupdate:modifications">
35
36	<!-- <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	<!-- 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	<!-- <xsl:attribute name="match">*</xsl:attribute> -->
63	<xsl:attribute name="match">*ab</xsl:attribute>
64	<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
77
78
79
80	<!-- code -->
81	<!-- This node "encapsulates" infrastructure for handling the directives. -->
82	<!-- FIXME: handle the other ones: append, remove, etc. -->
83	<xsl:template match="xupdate:insert-after">
84	<xsl:comment> 2. context finder </xsl:comment>
85	<!-- <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	<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
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	<!-- <xsl:attribute name="test"><xsl:value-of select="@test" /></xsl:attribute> -->
103	<xsl:attribute name="test"><xsl:value-of select="@select" /></xsl:attribute>
104
105	<!-- FIXME: case "insert-before"!!! -->
106	<!-- <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	<!-- <xsl:attribute name="name">passthru</xsl:attribute> -->
112	</xsl:element>
113
114	<!-- FIXME: case "insert-after"!!! -->
115	<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	<!-- <xsl:attribute name="name">passthru</xsl:attribute> -->
124	</xsl:element>
125
126	<!-- <xsl:apply-templates /> -->
127
128	</xsl:element>
129
130	</xsl:element>
131	</xsl:element>
132
133	<!-- <xsl:apply-templates /> -->
134
135	</xsl:template>
136
137	<!-- This node passes through all attributes and childnodes rewriting the tagname only. -->
138	<xsl:template match="xupdate:element">
139	<xsl:comment> 3.a. vivify elements </xsl:comment>
140	<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	<xsl:comment> 3.b. vivify attributes </xsl:comment>
149	<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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