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Subject cvs commit: xml-cocoon2/src/documentation/xdocs/userdocs/selectors parameter-selector.xml book.xml selectors.xml
Date Wed, 10 Jul 2002 18:54:33 GMT
shannon     2002/07/10 11:54:33

  Modified:    src/documentation/xdocs/userdocs/selectors book.xml
  Added:       src/documentation/xdocs/userdocs/selectors
  Added new doc, contributed by
  Beth Naquin,
  Revision  Changes    Path
  1.2       +3 -1      xml-cocoon2/src/documentation/xdocs/userdocs/selectors/book.xml
  Index: book.xml
  RCS file: /home/cvs/xml-cocoon2/src/documentation/xdocs/userdocs/selectors/book.xml,v
  retrieving revision 1.1
  retrieving revision 1.2
  diff -u -r1.1 -r1.2
  --- book.xml	3 Jan 2002 12:31:05 -0000	1.1
  +++ book.xml	10 Jul 2002 18:54:33 -0000	1.2
  @@ -10,15 +10,17 @@
       <menu-item label="User Documentation" href="../index.html"/>
  -  <menu label="Matchers">
  +  <menu label="Selectors">
       <menu-item label="Overview" href="selectors.html"/>
     <menu label="Default">
     <menu label="Core">
  +    <menu-item label="Parameter" href="parameter-selector.html"/>
     <menu label="Optional">
  1.3       +1 -1      xml-cocoon2/src/documentation/xdocs/userdocs/selectors/selectors.xml
  Index: selectors.xml
  RCS file: /home/cvs/xml-cocoon2/src/documentation/xdocs/userdocs/selectors/selectors.xml,v
  retrieving revision 1.2
  retrieving revision 1.3
  diff -u -r1.2 -r1.3
  --- selectors.xml	30 May 2002 17:44:16 -0000	1.2
  +++ selectors.xml	10 Jul 2002 18:54:33 -0000	1.3
  @@ -94,7 +94,7 @@
   				<li><strong>HostSelector</strong>: matches the &quot;test&quot;
parameter value
           against the Host request header</li>
  -				<li><strong>ParameterSelector</strong>: matches the string specified
  +				<li><link href="parameter-selector.html">ParameterSelector</link>:
matches the string specified
           in the &quot;test&quot; parameter against a specified Cocoon internal
           (e.g. sitemap) parameter;</li>
  1.1                  xml-cocoon2/src/documentation/xdocs/userdocs/selectors/parameter-selector.xml
  Index: parameter-selector.xml
  <?xml version="1.0" encoding="UTF-8"?>
  <!DOCTYPE document PUBLIC "-//APACHE//DTD Documentation V1.0//EN" "../../dtd/document-v10.dtd">
    <title>Parameter Selector</title>
    <subtitle>in @doctitle@</subtitle>
    <type>Technical document</type>
     <person name="Beth Naquin" email=""/>
    <abstract>This document describes the Parameter Selector.</abstract>
    <s1 title="Parameter Selector">
      <li>Name : ParameterSelector</li>
      <li>Class: org.apache.cocoon.selection.ParameterSelector</li>
      <li>Cacheable: not applicable</li>
      This Selector matches a string, in the Parameters object passed to the 
      selector, against a specified Cocoon internal parameter.  It performs a 
      case-sensitive string comparison between the value of the 
      'parameter-selector-test' parameter and the value of the 'test' 
      attribute of the <code><![CDATA[<map:when ...>]]></code> element.
     This internal parameter could be:
      <li>A sitemap parameter from the <code><![CDATA[<map:match ...>]]></code>
portion of the pipeline</li>
      <li>A sitemap parameter set by an action</li>
     <s1 title="Reasons to use ParameterSelector">
     One purpose of this selector is to choose between different components 
     of a pipeline based on sitemap parameters set by an action.  This would 
     allow the action to control the logic required to set one or more parameters, 
     which can then be used by this selector to control pipeline processing.  
     Thus, complex decision-making logic can be contained in actions, while the 
     sitemap simply uses the results of the actions (the parameters) to determine 
     pipeline processing.
     Parameter Selector can also be used to select on the value of 'keys' 
     (such as {1} or {../2} ) from the wildcard matcher.  Information in the 
     URI, such as part of a filename, can then be used to determine pipeline 
     <s1 title="Examples">
     Add the component to your sitemap.xmap:
     Use a parameter set by an action:
      Assume there is an action (named MyAction) that sets a parameter 
      (named MyRegion) to several possible values.  For more information on actions, 
      including a simple example of an action that creates a sitemap parameter, see
      <link href="../concepts/actions.html">Creating and Using Actions</link>.
     <map:match pattern="*.xml">
      <map:act type="MyAction">
        <map:generate src="{../1}.xml"/>
        <map:select type="parameter">
          <map:parameter name="parameter-selector-test" value="{MyRegion}"/>
          <!-- executes iff the value of MyRegion equals 
               "United States" (without quotes) -->
          <map:when test="United States">
            <map:transform src="stylesheets/us.xsl"/>
          <map:when test="South_America">
            <map:transform src="stylesheets/southamerica.xsl"/>
          <map:when test="Europe">
            <map:transform src="stylesheets/europe.xsl"/>
            <map:transform src="all_others.xsl"
     Use values from the URI:
       <!-- {1}/{2}/myfile.xml -->
       <map:match pattern="**/*/myfile.xml"> 
         <!-- Use ParameterSelector -->
         <map:select type="parameter">
          <map:parameter name="parameter-selector-test" value="{2}"/>
          <!-- executes iff the value of {2} equals 
               "basic" (without quotes); the requested URI
                could be **/basic/myfile.xml -->
          <map:when test="basic">
              <map:generate src="{1}/myfile.xml"/>
              <map:transform src="stylesheets/basic.xsl">
                  <map:parameter name="use-request-parameters" value="true"/>
                  <map:parameter name="resource" value="{2}.html"/>
          <map:when test="aggregate">
              <map:aggregate element="site">
          	<map:part src="cocoon:/{1}/sidebar-{1}/{2}.xml"/>
          	<map:part src="cocoon:/body-{1}/{2}.xsp"/>
              <map:transform src="stylesheets/aggregate2xhtml.xsl"/>
              <map:redirect-to uri="other_URI"/>

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