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 write
        code to use this stylesheet from other language bindings.

        Please have a look at the XUpdate specs and associated resources:
          Requirements: http://www.xmldb.org/xupdate/xupdate-req.html
          Working Draft: http://www.xmldb.org/xupdate/xupdate-wd.html

        ChangeLog:
          2003-04-30: first alpha
          2003-05-01: works: xupdate:insert-after (elements/attributes)
          2003-05-06: works: xupdate:insert-before (elements/attributes)

      -->
      
      <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. Note: Former custom passthru logic (copy all untouched nodes)
                      now completely replaced by Mike Kay's "identity template rule". 
                  What is left here is just the required overriding of some builtin rules
                  to (e.g.) not to loose comments.
              -->
              <xsl:comment> 1. override built-in rules </xsl:comment>
              <!-- override some builtin rules: see http://www.w3.org/TR/xslt#built-in-rule -->
              <xsl:element name="xsl:template"><xsl:attribute name="match">comment()</xsl:attribute>
                  <xsl:element name="xsl:call-template">
                    <xsl:attribute name="name">identity_template_rule</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. -->

      <!-- Dispatch all "XUpdate Services" here. -->
      <!-- FIXME: Actually implement action = "CREATE|RETRIEVE|UPDATE|DELETE"!!! -->

      <!-- 
        xsl for XUpdate Services [2 XUpdate Syntax] [2.3 Modifications]
      -->

      <!-- xsl for [2.4 Inserts] -->
      <xsl:template match="xupdate:insert-after">
          <!-- <xsl:variable name="select" select="@select">Hello World!</xsl:variable> -->
          <xsl:call-template name="findcontext">
            <xsl:with-param name="service">Insert</xsl:with-param>
            <xsl:with-param name="position">after</xsl:with-param>
          </xsl:call-template>
      </xsl:template>

      <!-- xsl for [2.4 Inserts] -->
      <xsl:template match="xupdate:insert-before">
          <xsl:call-template name="findcontext">
            <xsl:with-param name="service">Insert</xsl:with-param>
            <xsl:with-param name="position">before</xsl:with-param>
          </xsl:call-template>
      </xsl:template>

      <!-- xsl for [2.5 Append] -->
      <xsl:template match="xupdate:append">
          <xsl:call-template name="findcontext">
            <xsl:with-param name="service">Append</xsl:with-param>
            <!-- <xsl:with-param name="position">inline</xsl:with-param> -->
            <xsl:with-param name="test">.</xsl:with-param>
          </xsl:call-template>
      </xsl:template>

      <!-- xsl for [2.6 Update] -->
      <xsl:template match="xupdate:update">
          <xsl:call-template name="findcontext">
            <xsl:with-param name="service">Update</xsl:with-param>
            <!-- <xsl:with-param name="position">after</xsl:with-param> -->
            <xsl:with-param name="test">.</xsl:with-param>
          </xsl:call-template>
      </xsl:template>

      <!-- xsl for [2.7 Remove] -->
      <xsl:template match="xupdate:remove">
          <xsl:call-template name="findcontext">
            <xsl:with-param name="service">Remove</xsl:with-param>
            <!-- <xsl:with-param name="position">after</xsl:with-param> -->
            <!-- 2003-06-04: removed -->
            <!-- <xsl:with-param name="test">.</xsl:with-param> -->
          </xsl:call-template>
      </xsl:template>

      <!-- xsl for [2.8 Rename] -->
      <xsl:template match="xupdate:rename">
          <xsl:call-template name="findcontext">
            <xsl:with-param name="service">Rename</xsl:with-param>
            <!-- <xsl:with-param name="position">after</xsl:with-param> -->
            <xsl:with-param name="test">.</xsl:with-param>
          </xsl:call-template>
      </xsl:template>


      <xsl:template name="findcontext">

        <xsl:comment> 2. context finder </xsl:comment>

        <!-- new of 2003-05-06: introducing parameters here to handle all cases -->
        <xsl:param name="service" />
        <xsl:param name="position" />
        <!-- new of 2003-05-07: replacement for test if undef -->
        <xsl:param name="test" />
        
        <!--
        <xsl:comment>
          service: <xsl:value-of select="$service" />
          position: <xsl:value-of select="$position" />
          test: <xsl:value-of select="$test" />
        </xsl:comment>
        -->

          <!-- 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> -->
          
          <!-- fallback -->
          <xsl:element name="xsl:template">
              <xsl:attribute name="match">*</xsl:attribute>
              <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:element>

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

              <xsl:choose>
                <xsl:when test="{$service}=Insert">

                <xsl:comment> 2.a. Insert </xsl:comment>

                <!-- Implementation of "xupdate:insert-before" -->
                <xsl:choose>
                  <xsl:when test="{$position}=before">
                    <xsl:apply-templates />
                  </xsl:when>
                </xsl:choose>
  
                <!-- 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>
  
                <!-- Implementation of "xupdate:insert-after" -->
                <xsl:choose>
                  <xsl:when test="{$position}=after">
                    <xsl:apply-templates />
                  </xsl:when>
                </xsl:choose>

                </xsl:when>
                
                <!-- Implementation of "xupdate:append" -->
                <xsl:when test="{$service}=Append">
                <xsl:comment> 2.b. Append </xsl:comment>
                  <!-- V1 -->
                  <!-- <xsl:apply-templates /> -->
                  <!-- V2 -->
                  <xsl:element name="xsl:copy">
                    <!--
                    <xsl:element name="xsl:copy-of">
                      <xsl:attribute name="select">@*</xsl:attribute>
                    </xsl:element>
                    -->
                    <!-- Keep content ... -->
                    <xsl:element name="xsl:apply-templates" />
                    <!-- Append this: -->
                    <xsl:apply-templates />
                  </xsl:element>
                </xsl:when>
                
                <!-- Implementation of "xupdate:update" -->
                <xsl:when test="{$service}=Update">
                <xsl:comment> 2.c. Update </xsl:comment>
                  <!-- V1 -->
                  <!-- <xsl:apply-templates /> -->
                  <!-- V2 -->
                  <xsl:element name="xsl:copy">
                    <!--
                    <xsl:element name="xsl:copy-of">
                      <xsl:attribute name="select">@*</xsl:attribute>
                    </xsl:element>
                    -->
                    <!-- Keep content ... -->
                    <!-- <xsl:element name="xsl:apply-templates" /> -->
                    <!-- Add (replace through) this: -->
                    <xsl:apply-templates />
                  </xsl:element>
                </xsl:when>

                <!-- Implementation of "xupdate:remove" -->
                <xsl:when test="{$service}=Remove">
                  <xsl:comment> 2.d. Remove </xsl:comment>
                </xsl:when>

                <!-- Implementation of "xupdate:rename" -->
                <xsl:when test="{$service}=Rename">
                  <xsl:comment> 2.e. Rename (Remove context and Append modified identity template) </xsl:comment>
                  
                  <xsl:comment> [5.a.] modify node name </xsl:comment>
                  <xsl:element name="xsl:element">
                    <!-- this renames the node (change the "name"-attribute) -->
                    <xsl:attribute name="name">
                      <xsl:apply-templates />
                    </xsl:attribute>
                    <!-- this propagates the original content -->
                    <xsl:element name="xsl:apply-templates" />
                  </xsl:element>

                </xsl:when>

              </xsl:choose>

            </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>
  
  
      <!-- 
        Rewrite XUpdate elements to XSLT elements.
        These templates pass through all attributes 
        and childnodes rewriting the tagname only. 
        FIXME: The redundant encoding for each XUpdate
        element type seems dummy. Could this be stripped
        shorter somehow sometimes?
      -->

      <!-- 
        xsl for [2.4 Inserts]
      -->

      <!-- xsl for [2.4.1 Creating Elements] -->
      <xsl:template match="xupdate:element">
          <xsl:comment> 3.a. vivify generic node </xsl:comment>
          <xsl:element name="xsl:element">
              <xsl:copy-of select="@*"/>
              <xsl:apply-templates />
          </xsl:element>
      </xsl:template>
  
      <!-- xsl for [2.4.2 Creating Attributes] -->
      <xsl:template match="xupdate:attribute">
          <xsl:comment> 3.b. vivify node attributes </xsl:comment>
          <xsl:element name="xsl:attribute">
              <xsl:copy-of select="@*"/>
              <xsl:apply-templates />
          </xsl:element>
      </xsl:template>
  
      <!-- xsl for [2.4.3 Creating Text] -->
      <xsl:template match="xupdate:text">
          <xsl:comment> 4.a. vivify text node </xsl:comment>
          <xsl:element name="xsl:text">
              <xsl:copy-of select="@*"/>
              <xsl:apply-templates />
          </xsl:element>
      </xsl:template>

      <!-- xsl for [2.4.4 Creating Processing Instructions] -->
      <xsl:template match="xupdate:processing-instruction">
          <xsl:comment> 4.b. vivify PI node </xsl:comment>
          <xsl:element name="xsl:processing-instruction">
              <xsl:copy-of select="@*"/>
              <xsl:apply-templates />
          </xsl:element>
      </xsl:template>

      <!-- xsl for [2.4.5 Creating Comments] -->
      <xsl:template match="xupdate:comment">
          <xsl:comment> 4.c. vivify comment node </xsl:comment>
          <xsl:element name="xsl:comment">
              <xsl:copy-of select="@*"/>
              <xsl:apply-templates />
          </xsl:element>
      </xsl:template>


      <!-- 
        xsl for [2.9 Variables and Values of Variables]
        Encapsulates block payload into a named template.
      -->
      <xsl:template match="xupdate:variable">
          <xsl:comment> 5.a. vivify xsl-element "variable" </xsl:comment>
          
          <xsl:element name="xsl:template">
              <xsl:attribute name="name">Variables</xsl:attribute>
          
              <!--
              <xsl:element name="xsl:variable">
                  <xsl:attribute name="name"><xsl:value-of select="@name" /></xsl:attribute>
              -->
              
              <xsl:choose>
              
                <!-- Mode 1 [spec]: just evaluate as (sub-)selection if "select"-attribute is not empty -->
                <xsl:when test="@select!=">
                  <xsl:element name="xsl:apply-templates">
                      <xsl:attribute name="select"><xsl:value-of select="@select" /></xsl:attribute>
                  </xsl:element>
                </xsl:when>
                
                <!-- Mode 2 [feature]: in other cases: pass thru the current node w/o any operation(s) on it -->
                <xsl:otherwise>
                    <xsl:value-of select="." />
                </xsl:otherwise>
                    
              </xsl:choose>

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

          </xsl:element>

      </xsl:template>

      <!-- 
        xsl for [2.9 Variables and Values of Variables]
        Calls encapsulated named template "Variables" 
        for each occourance of an "xupdate:value-of" element.
      -->
      <xsl:template match="xupdate:value-of">
          <xsl:comment> 5.b. vivify xsl-element "value-of" </xsl:comment>
          <xsl:element name="xsl:call-template">
            <xsl:attribute name="name">Variables</xsl:attribute>
          </xsl:element>
          
        <!-- is this required any more??? -->
        <xsl:element name="xsl:value-of">
              <xsl:copy-of select="@*"/>
              <!-- <xsl:apply-templates /> -->
              <!-- this propagates the original content -->
              <!-- <xsl:element name="xsl:apply-templates"> -->
                <!-- <xsl:attribute name="" > -->
              <!-- </xsl:element> -->
          </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	joko	1.4	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 write
16			code to use this stylesheet from other language bindings.
17
18			Please have a look at the XUpdate specs and associated resources:
19			Requirements: http://www.xmldb.org/xupdate/xupdate-req.html
20			Working Draft: http://www.xmldb.org/xupdate/xupdate-wd.html
21
22			ChangeLog:
23			2003-04-30: first alpha
24			2003-05-01: works: xupdate:insert-after (elements/attributes)
25			2003-05-06: works: xupdate:insert-before (elements/attributes)
26
27	joko	1.1	-->
28
29			<xsl:output method="xml" />
30
31			<!-- 1. This is the passthru logic (copy all untouched nodes). -->
32			<xsl:template name="passthru"><xsl:copy><xsl:apply-templates /></xsl:copy></xsl:template>
33			<!-- activate this -->
34			<xsl:template match="*"><xsl:call-template name="passthru" /></xsl:template>
35			<!-- override some builtin rules: see http://www.w3.org/TR/xslt#built-in-rule -->
36			<xsl:template match="comment()"><xsl:call-template name="passthru" /></xsl:template>
37
38	joko	1.2
39	joko	1.1	<!-- 2. This is the translation part: XUpdate becomes XSLT -->
40
41	joko	1.2	<!-- lib -->
42			<!-- This node "encapsulates" common core infrastructure. -->
43	joko	1.1	<xsl:template match="xupdate:modifications">
44
45	joko	1.2	<!-- <xsl:template name="identity_template_rule"> -->
46			<xsl:element name="xsl:template">
47			<xsl:attribute name="name">identity_template_rule</xsl:attribute>
48
49			<!-- An "identity template rule" - original version by Mike Kay, Software AG -->
50			<!-- Please visit [http://p2p.wrox.com/archive/xslt/2001-06/98.asp] -->
51			<!-- Translated to "self hosting xsl": Andreas Motl, andreas.motl@ilo.de -->
52			<!-- FIXME: Could this be used to replace passthru-logic at 1. ? -->
53			<xsl:element name="xsl:copy">
54			<xsl:element name="xsl:copy-of">
55			<xsl:attribute name="select">@*</xsl:attribute>
56			</xsl:element>
57			<xsl:element name="xsl:apply-templates" />
58			</xsl:element>
59
60			</xsl:element>
61			<!-- </xsl:template> -->
62
63	joko	1.4	<!--
64			1. Note: Former custom passthru logic (copy all untouched nodes)
65			now completely replaced by Mike Kay's "identity template rule".
66			What is left here is just the required overriding of some builtin rules
67			to (e.g.) not to loose comments.
68			-->
69			<xsl:comment> 1. override built-in rules </xsl:comment>
70			<!-- override some builtin rules: see http://www.w3.org/TR/xslt#built-in-rule -->
71			<xsl:element name="xsl:template"><xsl:attribute name="match">comment()</xsl:attribute>
72			<xsl:element name="xsl:call-template">
73			<xsl:attribute name="name">identity_template_rule</xsl:attribute>
74			</xsl:element>
75	joko	1.1	</xsl:element>
76
77			<!-- continue with all inline nodes -->
78			<xsl:apply-templates />
79
80			</xsl:template>
81
82	joko	1.2
83
84
85
86			<!-- code -->
87	joko	1.1	<!-- This node "encapsulates" infrastructure for handling the directives. -->
88	joko	1.4
89			<!-- Dispatch all "XUpdate Services" here. -->
90			<!-- FIXME: Actually implement action = "CREATE\|RETRIEVE\|UPDATE\|DELETE"!!! -->
91	joko	1.6
92			<!--
93			xsl for XUpdate Services [2 XUpdate Syntax] [2.3 Modifications]
94			-->
95
96			<!-- xsl for [2.4 Inserts] -->
97	joko	1.1	<xsl:template match="xupdate:insert-after">
98	joko	1.2	<!-- <xsl:variable name="select" select="@select">Hello World!</xsl:variable> -->
99	joko	1.4	<xsl:call-template name="findcontext">
100			<xsl:with-param name="service">Insert</xsl:with-param>
101			<xsl:with-param name="position">after</xsl:with-param>
102			</xsl:call-template>
103			</xsl:template>
104
105	joko	1.6	<!-- xsl for [2.4 Inserts] -->
106	joko	1.4	<xsl:template match="xupdate:insert-before">
107			<xsl:call-template name="findcontext">
108			<xsl:with-param name="service">Insert</xsl:with-param>
109			<xsl:with-param name="position">before</xsl:with-param>
110			</xsl:call-template>
111			</xsl:template>
112
113	joko	1.6	<!-- xsl for [2.5 Append] -->
114	joko	1.4	<xsl:template match="xupdate:append">
115			<xsl:call-template name="findcontext">
116			<xsl:with-param name="service">Append</xsl:with-param>
117			<!-- <xsl:with-param name="position">inline</xsl:with-param> -->
118			<xsl:with-param name="test">.</xsl:with-param>
119			</xsl:call-template>
120			</xsl:template>
121
122	joko	1.6	<!-- xsl for [2.6 Update] -->
123	joko	1.4	<xsl:template match="xupdate:update">
124			<xsl:call-template name="findcontext">
125			<xsl:with-param name="service">Update</xsl:with-param>
126			<!-- <xsl:with-param name="position">after</xsl:with-param> -->
127			<xsl:with-param name="test">.</xsl:with-param>
128			</xsl:call-template>
129			</xsl:template>
130
131	joko	1.6	<!-- xsl for [2.7 Remove] -->
132	joko	1.4	<xsl:template match="xupdate:remove">
133			<xsl:call-template name="findcontext">
134			<xsl:with-param name="service">Remove</xsl:with-param>
135			<!-- <xsl:with-param name="position">after</xsl:with-param> -->
136	joko	1.7	<!-- 2003-06-04: removed -->
137			<!-- <xsl:with-param name="test">.</xsl:with-param> -->
138	joko	1.4	</xsl:call-template>
139			</xsl:template>
140
141	joko	1.6	<!-- xsl for [2.8 Rename] -->
142	joko	1.4	<xsl:template match="xupdate:rename">
143			<xsl:call-template name="findcontext">
144			<xsl:with-param name="service">Rename</xsl:with-param>
145			<!-- <xsl:with-param name="position">after</xsl:with-param> -->
146			<xsl:with-param name="test">.</xsl:with-param>
147			</xsl:call-template>
148			</xsl:template>
149
150
151
152			<xsl:template name="findcontext">
153
154			<xsl:comment> 2. context finder </xsl:comment>
155
156			<!-- new of 2003-05-06: introducing parameters here to handle all cases -->
157			<xsl:param name="service" />
158			<xsl:param name="position" />
159			<!-- new of 2003-05-07: replacement for test if undef -->
160			<xsl:param name="test" />
161
162			<!--
163			<xsl:comment>
164			service: <xsl:value-of select="$service" />
165			position: <xsl:value-of select="$position" />
166			test: <xsl:value-of select="$test" />
167			</xsl:comment>
168			-->
169
170	joko	1.2	<!-- this resembles some parts of the CRUD API - retranslated to self-hosting xsl -->
171
172			<!-- V1 -->
173			<!-- <xsl:element name="xsl:template"> -->
174			<!-- <xsl:attribute name="match"><xsl:value-of select="@select" /></xsl:attribute> -->
175	joko	1.4
176			<!-- fallback -->
177			<xsl:element name="xsl:template">
178			<xsl:attribute name="match">*</xsl:attribute>
179			<xsl:element name="xsl:call-template">
180			<xsl:attribute name="name">identity_template_rule</xsl:attribute>
181			<!-- <xsl:attribute name="name">passthru</xsl:attribute> -->
182			</xsl:element>
183			</xsl:element>
184	joko	1.2
185			<!-- V2 -->
186			<xsl:element name="xsl:template">
187	joko	1.3	<!-- <xsl:attribute name="match">/addresses/address</xsl:attribute> -->
188	joko	1.4	<!-- <xsl:attribute name="match">*</xsl:attribute> -->
189			<xsl:attribute name="match"><xsl:value-of select="@select" /></xsl:attribute>
190	joko	1.2
191			<xsl:element name="xsl:choose">
192			<!-- <xsl:attribute name="match"><xsl:value-of select="@select" /></xsl:attribute> -->
193			<xsl:element name="xsl:when">
194	joko	1.4	<!-- <xsl:attribute name="test"><xsl:value-of select="@select" /></xsl:attribute> -->
195			<xsl:attribute name="test"><xsl:value-of select="@test" /><xsl:value-of select="$test" /></xsl:attribute>
196	joko	1.2
197	joko	1.4	<xsl:choose>
198			<xsl:when test="{$service}=Insert">
199
200			<xsl:comment> 2.a. Insert </xsl:comment>
201
202			<!-- Implementation of "xupdate:insert-before" -->
203			<xsl:choose>
204			<xsl:when test="{$position}=before">
205			<xsl:apply-templates />
206			</xsl:when>
207			</xsl:choose>
208
209			<!-- call the "identity template rule" to passthru all childnodes -->
210			<xsl:element name="xsl:call-template">
211			<xsl:attribute name="name">identity_template_rule</xsl:attribute>
212			<!-- <xsl:attribute name="name">passthru</xsl:attribute> -->
213			</xsl:element>
214
215			<!-- Implementation of "xupdate:insert-after" -->
216			<xsl:choose>
217			<xsl:when test="{$position}=after">
218			<xsl:apply-templates />
219			</xsl:when>
220			</xsl:choose>
221
222			</xsl:when>
223
224			<!-- Implementation of "xupdate:append" -->
225			<xsl:when test="{$service}=Append">
226			<xsl:comment> 2.b. Append </xsl:comment>
227			<!-- V1 -->
228			<!-- <xsl:apply-templates /> -->
229			<!-- V2 -->
230			<xsl:element name="xsl:copy">
231			<!--
232			<xsl:element name="xsl:copy-of">
233			<xsl:attribute name="select">@*</xsl:attribute>
234			</xsl:element>
235			-->
236			<!-- Keep content ... -->
237			<xsl:element name="xsl:apply-templates" />
238			<!-- Append this: -->
239			<xsl:apply-templates />
240			</xsl:element>
241			</xsl:when>
242
243			<!-- Implementation of "xupdate:update" -->
244			<xsl:when test="{$service}=Update">
245			<xsl:comment> 2.c. Update </xsl:comment>
246			<!-- V1 -->
247			<!-- <xsl:apply-templates /> -->
248			<!-- V2 -->
249			<xsl:element name="xsl:copy">
250			<!--
251			<xsl:element name="xsl:copy-of">
252			<xsl:attribute name="select">@*</xsl:attribute>
253			</xsl:element>
254			-->
255			<!-- Keep content ... -->
256			<!-- <xsl:element name="xsl:apply-templates" /> -->
257			<!-- Add (replace through) this: -->
258			<xsl:apply-templates />
259			</xsl:element>
260			</xsl:when>
261
262			<!-- Implementation of "xupdate:remove" -->
263			<xsl:when test="{$service}=Remove">
264			<xsl:comment> 2.d. Remove </xsl:comment>
265			</xsl:when>
266
267			<!-- Implementation of "xupdate:rename" -->
268			<xsl:when test="{$service}=Rename">
269			<xsl:comment> 2.e. Rename (Remove context and Append modified identity template) </xsl:comment>
270
271			<xsl:comment> [5.a.] modify node name </xsl:comment>
272			<xsl:element name="xsl:element">
273			<!-- this renames the node (change the "name"-attribute) -->
274			<xsl:attribute name="name">
275			<xsl:apply-templates />
276			</xsl:attribute>
277			<!-- this propagates the original content -->
278			<xsl:element name="xsl:apply-templates" />
279			</xsl:element>
280	joko	1.2
281	joko	1.4	</xsl:when>
282	joko	1.2
283	joko	1.4	</xsl:choose>
284	joko	1.2
285			</xsl:element>
286			<xsl:element name="xsl:otherwise">
287
288			<!-- call the "identity template rule" to passthru all childnodes -->
289			<xsl:element name="xsl:call-template">
290			<xsl:attribute name="name">identity_template_rule</xsl:attribute>
291	joko	1.3	<!-- <xsl:attribute name="name">passthru</xsl:attribute> -->
292	joko	1.2	</xsl:element>
293	joko	1.3
294			<!-- <xsl:apply-templates /> -->
295	joko	1.2	</xsl:element>
296
297			</xsl:element>
298			</xsl:element>
299	joko	1.4
300	joko	1.2	<!-- <xsl:apply-templates /> -->
301
302	joko	1.1	</xsl:template>
303
304	joko	1.4
305			<!--
306			Rewrite XUpdate elements to XSLT elements.
307			These templates pass through all attributes
308			and childnodes rewriting the tagname only.
309			FIXME: The redundant encoding for each XUpdate
310			element type seems dummy. Could this be stripped
311			shorter somehow sometimes?
312			-->
313	joko	1.6
314			<!--
315			xsl for [2.4 Inserts]
316			-->
317
318			<!-- xsl for [2.4.1 Creating Elements] -->
319	joko	1.1	<xsl:template match="xupdate:element">
320	joko	1.4	<xsl:comment> 3.a. vivify generic node </xsl:comment>
321	joko	1.1	<xsl:element name="xsl:element">
322			<xsl:copy-of select="@*"/>
323			<xsl:apply-templates />
324			</xsl:element>
325			</xsl:template>
326
327	joko	1.6	<!-- xsl for [2.4.2 Creating Attributes] -->
328	joko	1.1	<xsl:template match="xupdate:attribute">
329	joko	1.4	<xsl:comment> 3.b. vivify node attributes </xsl:comment>
330	joko	1.1	<xsl:element name="xsl:attribute">
331			<xsl:copy-of select="@*"/>
332			<xsl:apply-templates />
333			</xsl:element>
334			</xsl:template>
335
336	joko	1.6	<!-- xsl for [2.4.3 Creating Text] -->
337	joko	1.4	<xsl:template match="xupdate:text">
338			<xsl:comment> 4.a. vivify text node </xsl:comment>
339			<xsl:element name="xsl:text">
340			<xsl:copy-of select="@*"/>
341			<xsl:apply-templates />
342			</xsl:element>
343			</xsl:template>
344
345	joko	1.6	<!-- xsl for [2.4.4 Creating Processing Instructions] -->
346	joko	1.4	<xsl:template match="xupdate:processing-instruction">
347			<xsl:comment> 4.b. vivify PI node </xsl:comment>
348			<xsl:element name="xsl:processing-instruction">
349			<xsl:copy-of select="@*"/>
350			<xsl:apply-templates />
351			</xsl:element>
352			</xsl:template>
353
354	joko	1.6	<!-- xsl for [2.4.5 Creating Comments] -->
355	joko	1.4	<xsl:template match="xupdate:comment">
356			<xsl:comment> 4.c. vivify comment node </xsl:comment>
357			<xsl:element name="xsl:comment">
358			<xsl:copy-of select="@*"/>
359			<xsl:apply-templates />
360			</xsl:element>
361			</xsl:template>
362
363	joko	1.6
364	joko	1.5	<!--
365			xsl for [2.9 Variables and Values of Variables]
366			Encapsulates block payload into a named template.
367			-->
368	joko	1.4	<xsl:template match="xupdate:variable">
369			<xsl:comment> 5.a. vivify xsl-element "variable" </xsl:comment>
370	joko	1.5
371			<xsl:element name="xsl:template">
372			<xsl:attribute name="name">Variables</xsl:attribute>
373
374			<!--
375			<xsl:element name="xsl:variable">
376			<xsl:attribute name="name"><xsl:value-of select="@name" /></xsl:attribute>
377			-->
378
379	joko	1.6	<xsl:choose>
380	joko	1.5
381	joko	1.6	<!-- Mode 1 [spec]: just evaluate as (sub-)selection if "select"-attribute is not empty -->
382			<xsl:when test="@select!=">
383			<xsl:element name="xsl:apply-templates">
384			<xsl:attribute name="select"><xsl:value-of select="@select" /></xsl:attribute>
385			</xsl:element>
386			</xsl:when>
387
388			<!-- Mode 2 [feature]: in other cases: pass thru the current node w/o any operation(s) on it -->
389			<xsl:otherwise>
390			<xsl:value-of select="." />
391			</xsl:otherwise>
392
393			</xsl:choose>
394
395	joko	1.4	<!--
396	joko	1.5	</xsl:element>
397	joko	1.4	-->
398	joko	1.6
399	joko	1.4	</xsl:element>
400	joko	1.5
401	joko	1.4	</xsl:template>
402
403	joko	1.6	<!--
404			xsl for [2.9 Variables and Values of Variables]
405			Calls encapsulated named template "Variables"
406			for each occourance of an "xupdate:value-of" element.
407			-->
408	joko	1.4	<xsl:template match="xupdate:value-of">
409			<xsl:comment> 5.b. vivify xsl-element "value-of" </xsl:comment>
410	joko	1.5	<xsl:element name="xsl:call-template">
411			<xsl:attribute name="name">Variables</xsl:attribute>
412			</xsl:element>
413	joko	1.6
414			<!-- is this required any more??? -->
415	joko	1.5	<xsl:element name="xsl:value-of">
416	joko	1.4	<xsl:copy-of select="@*"/>
417	joko	1.5	<!-- <xsl:apply-templates /> -->
418			<!-- this propagates the original content -->
419			<!-- <xsl:element name="xsl:apply-templates"> -->
420			<!-- <xsl:attribute name="" > -->
421			<!-- </xsl:element> -->
422	joko	1.4	</xsl:element>
423			</xsl:template>
424
425
426			</xsl:stylesheet>
427	joko	1.1
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