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">
  
      <!--
      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 to port it to other
      languages.
      -->
      
      <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: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, ect. -->
      <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: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="@select" /></xsl:attribute>

              <!-- 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:element>

              <!-- 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:element>

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