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Message-ID: <3A5D9134.D2A22A93@msdw.com>
Date: Thu, 11 Jan 2001 10:55:48 +0000
From: Werner Guttmann <Werner.Guttmann@msdw.com>
Reply-To: Werner.Guttmann@msdw.com
Organization: Morgan Stanley Dean Witter & Co.
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To: Donald Ball <balld@webslingerZ.com>
CC: cocoon-users@xml.apache.org, Robin Green <greenrd@hotmail.com>
Subject: Re: Use of <xsp:attribute> when calling a logicsheet
References: <Pine.LNX.4.30.0101101435570.27724-100000@localhost.localdomain>
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Donald,

tried both 'get-nested-content' and 'get-nested-string', and neither seems to yield
the resulkt expected.

Please find attached the generated java source when using get-nested-string as well
as the complete logicsheet.

Thanks for your help.

Werner.

Donald Ball wrote:

> On Wed, 10 Jan 2001, Werner Guttmann wrote:
>
> > Followed your advise and switched to using elements for specifying the service
> > to be affected and the action to be taken. The following xml fragment
> >
> > <manage:manageSubsystem>
> >     <manage:service>MQ</manage:service>
> >     <manage:action>stop</manage:action>
> > </manage:manageSubsystem>
> >
> > works as planned. If I try to use the request taglib to substitute "MQ" and
> > "stop" with values passed in via the HTTP request
> >
> > <manage:manageSubsystem>
> >     <manage:service>
> >         <request:get-parameter name="service" default="MQ" />
> >     </manage:service>
> >     <manage:action>
> >         <request:get-parameter name="action" default="stop" />
> >     </manage:action>
> > </manage:manageSubsystem>
> >
> > I still do not get the results as expected.
> >
> > Here's the relevant code from my logicsheet:
> >
> >   <xsl:template match="manage:manageSubsystem">
> >     <xsl:variable name="service">
> >       <xsl:call-template name="get-nested-content">
> >         <xsl:with-param name="content" select="manage:service"/>
> >       </xsl:call-template>
> >     </xsl:variable>
> >     <xsl:variable name="action">
> >       <xsl:call-template name="get-nested-content">
> >         <xsl:with-param name="content" select="manage:action"/>
> >       </xsl:call-template>
> >     </xsl:variable>
> >     <paragraph>
> >       About to <xsl:value-of select="$action"/> service <xsl:value-of
> > select="$service"/>.
> >     </paragraph>
> >   </xsl:template>
> >
> > Output still is
> >
> > About to service .
> >
> > , i.e. $service and $action are blank.
>
> try using get-nested-string from esql logicsheet. also, please send a
> message with your generated java source attached. i know get-nested-string
> will work, but i think get-nested-content should work for your simple
> usage.
>
> - donald

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Content-Type: text/xml; charset=us-ascii;
 name="manageSubsystem.xsl"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
 filename="manageSubsystem.xsl"

<?xml version="1.0"?>

<xsl:stylesheet
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  xmlns:xsp="http://www.apache.org/1999/XSP/Core"
  xmlns:manage="http://www.msdw.com/DTD/XSP/ManageSubsystem"
  xmlns:context="http://www.apache.org/1999/XSP/Context"
  xmlns:request="http://www.apache.org/1999/XSP/Request"
  version="1.0"
  >

  <xsl:template name="get-nested-content">
    <xsl:param name="content"/>
    <xsl:choose>
      <xsl:when test="$content/*">
	<xsl:apply-templates select="$content/*"/>
      </xsl:when>
      <xsl:otherwise>
	<xsl:value-of select="$content"/>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>
  
  <xsl:template name="get-nested-string">
    <xsl:param name="content"/>
    <xsl:choose>
      <xsl:when test="$content/*">
	""
	<xsl:for-each select="$content/node()">
	  <xsl:choose>
	    <xsl:when test="name(.)">
	      + <xsl:apply-templates select="."/>
	    </xsl:when>
	    <xsl:otherwise>
	      + "<xsl:value-of select="translate(.,'&#9;&#10;&#13;','   ')"/>"
	    </xsl:otherwise>
	  </xsl:choose>
	</xsl:for-each>
      </xsl:when>
      <xsl:otherwise>
	"<xsl:value-of select="normalize-space($content)"/>"
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>
  
  <xsl:template match="xsp:page">
    <xsp:page>
      
      <xsl:copy>
	<xsl:apply-templates select="@*"/>
      </xsl:copy>
      
      <xsp:structure>
	<xsp:include>java.rmi.RMISecurityManager</xsp:include>
	<xsp:include>com.msdw.futopt.spider.SpiderSubsystemManager</xsp:include>
	<xsp:include>com.msdw.futopt.spider.SpiderConnector</xsp:include>
	<xsp:include>com.msdw.futopt.spider.SpiderConnectivityParameters</xsp:include>
	<xsp:include>com.msdw.futopt.spider.Service</xsp:include>
	<xsp:include>com.msdw.futopt.spider.poller.Poller</xsp:include>
	<xsp:include>com.msdw.futopt.spider.logger.Logger</xsp:include>
	<xsp:include>com.msdw.futopt.spider.SpiderException</xsp:include>
	<xsp:include>java.rmi.RemoteException</xsp:include>
      </xsp:structure>
  
      <xsp:logic>
        protected static final String PROPSFILE_CONNECTIVITY = "propsFileConnectivity";

        private SpiderSubsystemManager getManager (Service service) {

          SpiderSubsystemManager manager = null;
          SpiderConnectivityParameters connectivityParameters = null;

          String propertiesFile = servletContext.getInitParameter(PROPSFILE_CONNECTIVITY);
          InputStream in = servletContext.getResourceAsStream(propertiesFile);
          if (in != null) {

	    // create an instance of SpiderConnectivityParameters, and load 
	    // its properties from the supplied InputStream	    
	    connectivityParameters = new SpiderConnectivityParameters(in);

            try {
                /* remote service invocation */
	        SpiderConnector connector = new SpiderConnector(connectivityParameters);
  
                manager = (SpiderSubsystemManager) connector.connect(service);
            }
            catch (SpiderException e) {
                e.printStackTrace();
            }
          }

          return manager;
        }

        private String actionManager(Service service, String action) {

	  String retVal = null;

          try {       
            SpiderSubsystemManager manager = getManager(service);
            if (action.equals("start"))
              manager.start();
            else
              manager.stop();
            retVal = "OK";
          }
          catch (SpiderException e) {
              e.printStackTrace();
              retVal = e.getMessage();
          }
          catch (RemoteException e) {
              e.printStackTrace();
              retVal = e.getMessage();
          }
          return retVal;
        }

	private String serviceRequest (String serviceName, String action) {
          servletContext.log("serviceName = " + serviceName);
          String retVal = null;
          if (serviceName == null) {
            return new String ("Cannot resolve service.");
          }
	  if (serviceName.equals("MQ")) {
	    retVal = actionManager (Service.MQ, action);
          }
	  if (serviceName.equals("POLLER")) {
	    retVal = actionManager (Service.POLLER, action);
          }
	  return retVal;
	}
      </xsp:logic>
  
      <xsl:apply-templates/>
    </xsp:page>
  </xsl:template>
  
  <xsl:template match="manage:manageSubsystem">
    <xsl:variable name="service">
      <xsl:call-template name="get-nested-string">
	<xsl:with-param name="content" select="manage:service"/>
      </xsl:call-template>
    </xsl:variable>
    <xsl:variable name="action">
      <xsl:call-template name="get-nested-string">
	<xsl:with-param name="content" select="manage:action"/>
      </xsl:call-template>
    </xsl:variable>
    <paragraph>
      About to <xsl:value-of select="$action"/> service <xsl:value-of select="$service"/>.
    </paragraph>
  </xsl:template>
    
  <xsl:template match="@*|node()" priority="-1">
    <xsl:copy>
      <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
  </xsl:template>
  
</xsl:stylesheet>


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