From: "SAXESS - Hussayn Dabbous" <[EMAIL PROTECTED]>
> hy, Konstantin;
>
> thanks for the input. i was not aware of these possibilities.
> Where could i learn something more about this ?
> I only use 2.0.4 Maybe this is something newer ?
> Also i heard rumours, that input modules should not yet
> be used in production, because they are under discussion ?
There were under discussion, but it seems that it's settled a little. And
also they were ported to 2.0 branch, so you can use them even now.
Where could you learn about them? Hm... There were a short document
somewhere in User docs/Concepts and a sample in 2.1 version. Not sure that
the samples were ported too. So it's worth looking at 2.1 from CVS or
nightly build. You'll find the sample at /src/webapp/samples/modules.
>
> Just two points i don't understand:
>
> 1.)
>
> src="http:/hmyserver/result?fieldtype=aFieldType&{request.queryString}"
>
> Does this imply, that i could access also the request-parameters
> using this very same syntax ?, e.g. could i write down:
>
> src="http:/hmyserver/result?fieldtype=aFieldType&{request.mycgiparam}"
>
> Would this also imply that RequestParamAction is obsolete ?
Not exact, but something like this should work:
src="http:/hmyserver/result?fieldtype=aFieldType&{request-param.mycgiparam}"
and yes. One of the main advantages of input modules is that you can avoid
action usage with their innatural nesting syntax.
Btw, if Cocoon's request implemented getParameterMap() then it'd be possible
to use this syntax:
{request:parameterMap[@name='mycgiparam']}
and even
{request:parameterMap[@name='mycgiparam'][1]}
>
> 2.)
>
> Could anyone point me to an example snippet where the XPath
> functionality is explained in little more detail ?
> I am very interested in this, but it would help to get
> an initial push ...
> i.e. where in the sitemap would i place the
> {request:translate(queryString, '&', ';')} to get this
> transformation done ?
It's worth to take a look at the underlying JXPath project docs at
http://jakarta.apache.org/commons/jxpath and the declaration of input
modules in cocoon.xconf. Also, a very good start is the mentioned above
modules sample, just take a look at its sitemap and you'll get the idea.
Hope my English was understandable ;)
Konstantin
>
>
> regards, Hussayn
>
>
> Konstantin Piroumian wrote:
> > Btw, why don't you use input modules instead?
> > You could do something like this:
> >
> > <map:generate
> >
src="http:/hmyserver/result?fieldtype=aFieldType&{request.queryString}"/>
> >
> > You can also use XPath functions to perform some special handling, e.g.:
> >
> > {request:translate(queryString, '&', ';')} - this will replace all
> > ampersands by a semicolon.
> >
> > Konstantin
> >
> > ----- Original Message -----
> > From: "SAXESS - Hussayn Dabbous" <[EMAIL PROTECTED]>
> > To: <[EMAIL PROTECTED]>
> > Sent: Tuesday, February 11, 2003 14:16
> > Subject: enhancement of RequestParamAction
> >
> >
> >
> >>Hy, all;
> >>
> >>i had a problem with RequestParamAction (cocoon-2.0.4). I enclose
> >>the Source of a slightly modified version of RequestParamAction
> >>that solves my problem. The class is named ExtendedRequestParamAction,
> >>i did a little of refactoring and a bit on the documentation
> >>of the class. In case it makes sense, i would be glad if someone
> >>could replace the body of RequestParamAction with the body of my
> >>modified class, which is fully compatible to the original.
> >>(I don't know how to apply a patch myself ...)
> >>
> >>In the following i explain, why i made the modifications:
> >>
> >>The problem:
> >>------------
> >>
> >>I want to use the requestQuery of an incoming request in my sitemap
> >>as follows:
> >>
> >><map:match pattern="*/canvas/search_mask">
> >> <map:act type="request" >
> >> <map:parameter name="default.fieldtype" value="required"/>
> >> <map:generate src="http:/hmyserver/result{requestQuery}"/>
> >> </map:act>
> >> <map:serialize type = "xml"/>
> >></map:match>
> >>
> >>This would forward the GET parameters of the original request to the
> >>HTTP call for the src in map:generate.
> >>In addition i want to forward the parameter fieldtype. How would i do
> >>this with RequestParamAction ?
> >>
> >>The RequestParamAction can't help me there because:
> >>
> >>1.) It won't add the fieldtype to the requestQuery automatically.
> >> so i must add it myself, e.g. like this:
> >>
> >> <map:generate
> >> src="http:/hmyserver/result{requestQuery}&fieldtype={fieldtype}"/>
> >>
> >> This fails, if {requestQuery} happens to be empty. Due to the
> >> treatment of requestQuery in the code i would miss the
> >> beginning "?" of my querylist in that case.
> >>
> >> <map:generate
> >>
src="http:/hmyserver/result?fieldtype={fieldtype}&{requestQuery}"/>
> >>
> >> wouldn't work either. In this case i would end with duplicate "?",
> >> if requestQuery is NOT empty.
> >>
> >>2.) I could use the parameters="true":
> >>
> >> <map:act type="request" >
> >> <map:parameter name="default.fieldtype" value="required"/>
> >> <map:parameter name="parameters" value="true"/>
> >> <map:generate ...
> >>
> >> Then i need to know exactly, which parameters are given in the
> >> original request and i would need to specify each parameter
> >> in the sitemap, which i don't want (i even don't know, which
> >> parameters are enclosed in the list).
> >>
> >>
> >>the solution
> >>------------
> >>
> >>In order to get around this problem i added a new parameter named
> >>"usedefaults". If this parameter is given in the sitemap, then
> >>all default parameters, which are not allready set in the query are
> >>automatically added to the requestQuery string.
> >>
> >>By this i can now setup my sitemap as follows:
> >>
> >><map:match pattern="*/canvas/search_mask">
> >> <map:act type="request" >
> >> <map:parameter name="usedefault" value="true"/>
> >> <map:parameter name="default.fieldtype" value="required"/>
> >> <map:generate src="http:/hmyserver/result.jsp{requestQuery}"/>
> >> </map:act>
> >> <map:serialize type = "xml"/>
> >></map:match>
> >>
> >>and i am shure, fieldtype is enclosed in the requestQuery, either
> >>from the request itself, or added by the action.
> >>
> >>limitations
> >>-----------
> >>
> >>default parameters are always added after the original queryString,
> >>hence i have no control of the insertion place in the queryList. This
> >>may be necessary in some pathological cases.
> >>
> >>
> >>regards, Hussayn
> >>
> >
> >
> >
>
> --------------------------------------------------------------------------
--
> > ----
> >
> >
> >
> >>/*
> >>
> >>
> >
> >
============================================================================
> >
> >> The Apache Software License, Version 1.1
> >>
> >
> >
============================================================================
> >
> >> Copyright (C) 1999-2002 The Apache Software Foundation. All rights
> >
> > reserved.
> >
> >> Redistribution and use in source and binary forms, with or without
> >
> > modifica-
> >
> >> tion, are permitted provided that the following conditions are met:
> >>
> >> 1. Redistributions of source code must retain the above copyright
> >
> > notice,
> >
> >> this list of conditions and the following disclaimer.
> >>
> >> 2. Redistributions in binary form must reproduce the above copyright
> >
> > notice,
> >
> >> this list of conditions and the following disclaimer in the
> >
> > documentation
> >
> >> and/or other materials provided with the distribution.
> >>
> >> 3. The end-user documentation included with the redistribution, if any,
> >
> > must
> >
> >> include the following acknowledgment: "This product includes
> >
> > software
> >
> >> developed by the Apache Software Foundation
> >
> > (http://www.apache.org/)."
> >
> >> Alternately, this acknowledgment may appear in the software
itself,
> >
> > if
> >
> >> and wherever such third-party acknowledgments normally appear.
> >>
> >> 4. The names "Apache Cocoon" and "Apache Software Foundation" must
not
> >
> > be
> >
> >> used to endorse or promote products derived from this software
> >
> > without
> >
> >> prior written permission. For written permission, please contact
> >> [EMAIL PROTECTED]
> >>
> >> 5. Products derived from this software may not be called "Apache",
nor
> >
> > may
> >
> >> "Apache" appear in their name, without prior written permission
of
> >
> > the
> >
> >> Apache Software Foundation.
> >>
> >> THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
> >
> > WARRANTIES,
> >
> >> INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY
> >
> > AND
> >
> >> FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
> >
> > THE
> >
> >> APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY
> >
> > DIRECT,
> >
> >> INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
> >
> > (INCLU-
> >
> >> DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
> >
> > LOSS
> >
> >> OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
AND
> >
> > ON
> >
> >> ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
> >
> > TORT
> >
> >> (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
USE
> >
> > OF
> >
> >> THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
> >>
> >> This software consists of voluntary contributions made by many
> >
> > individuals
> >
> >> on behalf of the Apache Software Foundation and was originally
created
> >
> > by
> >
> >> Stefano Mazzocchi <[EMAIL PROTECTED]>. For more information on the
> >
> > Apache
> >
> >> Software Foundation, please see <http://www.apache.org/>.
> >>
> >>*/
> >>package org.apache.cocoon.acting;
> >>
> >>/*
> >> * Standard imports
> >> */
> >>import org.apache.avalon.framework.parameters.Parameters;
> >>import org.apache.avalon.framework.thread.ThreadSafe;
> >>import org.apache.cocoon.Constants;
> >>import org.apache.cocoon.environment.ObjectModelHelper;
> >>import org.apache.cocoon.environment.Redirector;
> >>import org.apache.cocoon.environment.Request;
> >>import org.apache.cocoon.environment.SourceResolver;
> >>
> >>import java.util.Enumeration;
> >>import java.util.HashMap;
> >>import java.util.Map;
> >>
> >>/**
> >> * This action makes some request details available to the sitemap via
> >
> > parameter
> >
> >> * substitution. Within this action context following parameters get
> >
> > available:
> >
> >> *
> >> *
> >> * OUPTUT PARAMETERS
> >> * =================
> >> * output parameters available within the action context:
> >> *
> >> * {context} - is the context path of the servlet (usually
"/cocoon")
> >> * {requestURI} - is the requested URI without parameters
> >> * {requestQuery} - is the query string like "?param1=test" if there are
> >> * GET params available
> >> *
> >> * These parameters are always available.
> >> *
> >> *
> >> * CONTROL PARAMETERS
> >> * ==================
> >> * The action can be further controlled via sitemap arameters:
> >> *
> >> * sitemap parameters:
> >> *
> >> * parameters="true" - all request parameters are made available as
> >> * sitemap params using their names.
> >> * usedefaults="true" - default values (see below) will be added to
> >> * requestQuery if not allready exisiting in
> >
> > requestQuery
> >
> >> *
> >> * All control parameters can be used in parallel.
> >> *
> >> *
> >> * CREATING DEFAULT VALUES
> >> * =======================
> >> * Default values can be set for request parameters, by including
> >> * sitemap parameters following the syntax "default.<parameter-name>".
> >> *
> >> *
> >> * Sitemap definition:
> >> *
> >> * <pre>
> >> * <map:action name="request"
> >
> > src="org.apache.cocoon.acting.ExtendedRequestParamAction"/>
> >
> >> * </pre>
> >> *
> >> * <p>
> >> *
> >> * Example use:
> >> *
> >> * <pre>
> >> * <map:match pattern="some-resource">
> >> * <map:act type="request">
> >> * <map:parameter name="parameters" value="true"/>
> >> * <map:parameter name="default.dest"
> >
> > value="invalid-destination.html"/>
> >
> >> * <map:redirect-to uri="{context}/somewhereelse/{dest}"/>
> >> * </map:act>
> >> * </map:match>
> >> * </pre>
> >> *
> >> * Redirection is only one example, another use:
> >> *
> >> * <pre>
> >> * <map:match pattern="some-resource">
> >> * <map:act type="request">
> >> * <map:parameter name="parameters" value="true"/>
> >> * <map:generate src="users/menu-{id}.xml"/>
> >> * </map:act>
> >> * <map:transform src="menus/personalisation.xsl"/>
> >> * <map:serialize/>
> >> * </map:match>
> >> * </pre>
> >> *
> >> * etc, etc.
> >> *
> >> * @author <a href="mailto:[EMAIL PROTECTED]";>Marcus Crafter</a>
> >> * @author <a href="mailto:[EMAIL PROTECTED]";>Torsten Curdt</a>
> >> * @author <a href="mailto:[EMAIL PROTECTED]";>Hussayn
Dabbous</a>
> >> */
> >>public class ExtendedRequestParamAction extends ComposerAction
implements
> >
> > ThreadSafe {
> >
> >> public final static String MAP_URI = "requestURI";
> >> public final static String MAP_QUERY = "requestQuery";
> >> public final static String MAP_CONTEXTPATH = "context";
> >>
> >> public final static String PARAM_PARAMETERS = "parameters";
> >> public final static String PARAM_USEDEFAULTS = "usedefaults";
> >> public final static String PARAM_DEFAULT_PREFIX = "default.";
> >>
> >>
> >> public Map act( Redirector redirector, SourceResolver resolver, Map
> >
> > objectModel, String source, Parameters param )
> >
> >> throws Exception
> >> {
> >>
> >> Request request = ObjectModelHelper.getRequest(objectModel);
> >> if (request == null) {
> >> getLogger().error("RequestInfoAction: no request object!");
> >> return(null);
> >> }
> >>
> >> Map map = new HashMap();
> >>
> >> map.put(MAP_URI, request.getRequestURI());
> >> map.put(MAP_CONTEXTPATH, request.getContextPath());
> >>
> >>String query = request.getQueryString();
> >>
> >>boolean usedefaults =
> >
> > ("true".equalsIgnoreCase(param.getParameter(PARAM_USEDEFAULTS, null)));
> >
> >> boolean setparams =
> >
> > ("true".equalsIgnoreCase(param.getParameter(PARAM_PARAMETERS, null)));
> >
> >> if (setparams){
> >> Enumeration e = request.getParameterNames();
> >> while(e.hasMoreElements()){
> >> String name = (String) e.nextElement();
> >> String value = request.getParameter(name);
> >>
> >> if (value != null && !map.containsKey(name)){
> >> map.put(name, value);
> >> }
> >> }
> >> }
> >>
> >> if(setparams || usedefaults) {
> >> String[] paramNames = param.getNames();
> >> for (int i=0; i< paramNames.length; i++) {
> >> if (paramNames[i].startsWith(PARAM_DEFAULT_PREFIX) &&
> >>
> >
(request.getParameter(paramNames[i].substring(PARAM_DEFAULT_PREFIX.length())
> > ) == null)) {
> >
> >> String name =
> >
> > paramNames[i].substring(PARAM_DEFAULT_PREFIX.length());
> >
> >> String value= param.getParameter(paramNames[i]);
> >> if(setparams) map.put(name, value);
> >> if(usedefaults){
> >> if(query==null) query=""; else query +="&";
> >> query += name+"="+value;
> >> }
> >> }
> >> }
> >> }
> >>
> >> if (query != null && query.length() > 0){
> >> map.put(MAP_QUERY, "?" + query);
> >> }
> >> else{
> >> map.put(MAP_QUERY, "");
> >> }
> >> return(map);
> >> }
> >>}
> >>
> >>
> >
> >
> >
>
> --------------------------------------------------------------------------
--
> > ----
> >
> >
> >
> >>---------------------------------------------------------------------
> >>To unsubscribe, e-mail: [EMAIL PROTECTED]
> >>For additional commands, email: [EMAIL PROTECTED]
> >
> >
>
> --
> Dr. Hussayn Dabbous
> SAXESS Software Design GmbH
> Neuenhöfer Allee 125
> 50935 Köln
> Telefon: +49-221-56011-0
> Fax: +49-221-56011-20
> E-Mail: [EMAIL PROTECTED]
>
>
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