date:20060704


Hi,

See: http://cocoon.apache.org/2.1/userdocs/concepts/caching.html

Best Regards,

Antonio Gallardo

Bokluci escribió:

Is there any way to make cocoon cache last not so long?


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Re: Dynamic selection list

2006-07-04 Thread Derek Hohls

Are people still writing apps in XSP?  I thought that usage
of XSP was deprecated and that it had long been supplanted 
by other, more robust, technologies and techniques.

FWIW, the way I do this is to use an SQLTransformer and 
stylesheet combo:

1.  The query (say, XYZ-lookup.xml):

http://apache.org/cocoon/SQL/2.0";
>

  SELECT FieldA AS id, FieldB AS data  FROM myTable

2. The stylesheet (say, keys2list.xsl):

http://www.w3.org/1999/XSL/Transform";
  xmlns:sql="http://apache.org/cocoon/SQL/2.0";
  >

3.  And the pipeline match:

true

true

4. And the call from the form would be:

5. Obviously, adding new lookup lists would simply be a matter of
adding
new XML files with new queries (using the same field renaming
convention
so as to be able to reuse the stylesheet), named so that they can be
"found"
by the same pipeline.

Hope this helps!

Derek 

>>> [EMAIL PROTECTED] 2006/07/04 11:22 PM >>>

Jason Johnston wrote:
> > how to make a SQL query in javascript.
> 
> It can be done, though the syntax isn't quite as nice.

I'd like to give it a try, if the syntax isn't unbearable.
Do you have any pointers?

Although most of all I'd rather do it in ESQL in an XSP page and then
somehow call it from javascript and get an array out of the xml
produced.  Is there a way to do that?

> But there's also JavaSelectionList, which mysteriously doesn't
appear
> to be in the published user docs.  It sounds like this is closer to
> what you're looking for.

Thanks, that's quite fitting to what I need.  Although I'd still
rather
do it in XSP, for consistency with all the other DB queries in this
app.

Thinking about it, I could write an XSP-JavaSelectionList
logicsheet...

Toby

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Re: Dynamic selection list

2006-07-04 Thread Niels van Kampenhout


Toby wrote:

I'm trying to implement a dynamic selection list for a form field.
I need to extract the selection values and labels from a database.

The only way of filling a selection list with dynamic values, that I
could glean from the documentation, is by using flow-jxpath.

Which poses the problem of how to make a SQL query in javascript.

Or, if flowscript could fetch an arbitrary sitemap URI and access the
generated XML data, I could write the query in ESQL.  Is it possible?

Am I barking at the wrong tree here?  How should I proceed?


Hi Toby,

You can also make a pipeline that fetches the data from the DB using the 
SQLTransformer [1], and transforms the resulting XML into a CForms 
selection list format. Then in you form model specify a dynamic 
selection list:




This seems much easier than the flow/jx solution to me. See [2] for more 
info.


Regards,
Niels

[1] http://cocoon.apache.org/2.1/userdocs/sql-transformer.html
[2] http://cocoon.apache.org/2.1/userdocs/widgetconcepts/selectionlists.html


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Re: Tomcat / Cocoon Logging Configuration


Hi,

The problem seems to be an older commons-logging-jar in your classpath:

Caused by java.lang.ClassNotFoundException: 
org.apache.commons.logging.impl.LogKitLogger


Best Regards,

Antonio Gallardo.

E. Martens escribió:

Hi all,

after installing Cocoon to my Tomcat Server, some conflicts occur in the 
logging. I cannot access Tomcat's main page and the manager application anymore.

Cocoon 2.1.9
Tomcat 5.5.17
Win XP, all SP applied

below, I present the log and the Cocoon configuration entries.
Thank you very much for any Help!

%TOMCAT_HOME%/catalina.2006-06-28.log:

28.06.2006 08:14:40 org.apache.catalina.core.AprLifecycleListener lifecycleEvent
INFO: The Apache Tomcat Native library which allows optimal performance in production 
environments was not found on the java.library.path: 
C:\Programme\Apache\Tomcat\5.5\bin;.;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Programme\PHP;C:\Programme\PHP\ext;"C:\Programme\Zone
 Labs\ZoneAlarm\MailFrontier";C:\Programme\Apache\src\forrest-0.8\bin
28.06.2006 08:14:42 org.apache.coyote.http11.Http11BaseProtocol init
INFO: Initializing Coyote HTTP/1.1 on http-8080
28.06.2006 08:14:42 org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 3391 ms
28.06.2006 08:14:42 org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
28.06.2006 08:14:42 org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/5.5.17
28.06.2006 08:14:42 org.apache.catalina.core.StandardHost start
INFO: XML validation disabled
28.06.2006 08:15:28 org.apache.catalina.startup.HostConfig deployDescriptor
SCHWERWIEGEND: Error deploying configuration descriptor host-manager.xml
org.apache.commons.logging.LogConfigurationException: 
org.apache.commons.logging.LogConfigurationException: 
java.lang.ClassNotFoundException: org.apache.commons.logging.impl.LogKitLogger 
(Caused by java.lang.ClassNotFoundException: 
org.apache.commons.logging.impl.LogKitLogger) (Caused by 
org.apache.commons.logging.LogConfigurationException: 
java.lang.ClassNotFoundException: org.apache.commons.logging.impl.LogKitLogger 
(Caused by java.lang.ClassNotFoundException: 
org.apache.commons.logging.impl.LogKitLogger))
at 
org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:543)
at 
org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:235)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:370)
at org.apache.catalina.core.ContainerBase.getLogger(ContainerBase.java:380)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4090)
at 
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:759)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:739)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:524)
at 
org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:608)
at 
org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:535)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:470)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1122)
at 
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:310)
at 
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1021)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1013)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)
at org.apache.catalina.core.StandardService.start(StandardService.java:450)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:709)
at org.apache.catalina.startup.Catalina.start(Catalina.java:551)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:294)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:432)
Caused by: org.apache.commons.logging.LogConfigurationException: 
java.lang.ClassNotFoundException: org.apache.commons.logging.impl.LogKitLogger 
(Caused by java.lang.ClassNotFoundException: 
org.apache.commons.logging.impl.LogKitLogger)
at 
org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:397)
at 
org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529)
... 26 more
Caused by: java.lang.ClassNotFoundException: 
org.apache.commons.logging.impl.LogKitLogger
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Nativ

Re: Switch generate type to serverpage returns a blank page


Hi Basil,

Would you provide some sitemap.xmap snippet?

Best Regards,

Antonio Gallardo.

Basil Moser escribió:

Hi all

I tried out Cocoon 2.1. I have some XML (with java code embedded) and 
XSL files. When i switch now in the sitemap.xmap to javapages in the 
attribute "generate type" cocoon retruns me a blank page. Why does 
this happen?


I also set "generate type" to file. Then cocoon does not inperpret the 
java code. The java code is only displayed. Why does this happen?


Thanks a lot!
Basil

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Re: SQLTransform exception


Hi Dimas,

You should try a newer version. I checked the lastest trunk and the 
sample works:


http://cocoon.zones.apache.org/demos/21branch/samples/blocks/databases/samples

Best Regards,

Antonio Gallardo.

Dimas51 escribió:

Hello!

SQLTransform sample at
/cocoon/samples/blocks/databases/transform/sql-page does't work.


I'm using cocoon v2.1.7
Platform: Windows
JVM: 1.4.2-b28
Tomcat 5.0

Getting the exception:

cause: java.lang.NullPointerException

full exception chain stacktrace[hide] 


org.apache.cocoon.ProcessingException: Error executing pipeline.: 
java.lang.NullPointerException
at 
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.handleException(AbstractProcessingPipeline.java:940)
at 
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:281)
at 
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:483)
at 
org.apache.cocoon.components.treeprocessor.sitemap.SerializeNode.invoke(SerializeNode.java:120)
at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:46)
at 
org.apache.cocoon.components.treeprocessor.sitemap.PreparableMatchNode.invoke(PreparableMatchNode.java:130)
at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)
at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:138)
at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)
at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:92)
at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:234)
at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:176)
at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:243)
at 
org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:117)
at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:46)
at 
org.apache.cocoon.components.treeprocessor.sitemap.PreparableMatchNode.invoke(PreparableMatchNode.java:130)
at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)
at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:138)
at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)
at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:92)
at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:234)
at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:176)
at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:243)
at 
org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:117)
at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:46)
at 
org.apache.cocoon.components.treeprocessor.sitemap.PreparableMatchNode.invoke(PreparableMatchNode.java:130)
at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)
at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:138)
at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)
at 
org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:92)
at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:234)
at 
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:176)
at 
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:243)
at 
org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:117)
at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:46)
at 
org.apache.cocoon.components.treeprocessor.sitemap.PreparableMatchNode.invoke(PreparableMatchNode.java:130)
at 
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode

Re: Cocoon 2.1.9 Compile Error


Scott Warren escribió:

Solved!

Turns out that it's the JDK (Version 1.5.0_06-b05) that has issues 
with compiling the code. So I went back to 1.5.0_02 and it compiled 
successfully.

Or go to build 1.5.0_07-b03 ;-)

Best Regards,

Antonio Gallardo.


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Re: Dynamic selection list

2006-07-04 Thread Toby

Jason Johnston wrote:
> > how to make a SQL query in javascript.
> 
> It can be done, though the syntax isn't quite as nice.

I'd like to give it a try, if the syntax isn't unbearable.
Do you have any pointers?

Although most of all I'd rather do it in ESQL in an XSP page and then
somehow call it from javascript and get an array out of the xml
produced.  Is there a way to do that?

> But there's also JavaSelectionList, which mysteriously doesn't appear
> to be in the published user docs.  It sounds like this is closer to
> what you're looking for.

Thanks, that's quite fitting to what I need.  Although I'd still rather
do it in XSP, for consistency with all the other DB queries in this app.

Thinking about it, I could write an XSP-JavaSelectionList logicsheet...

Toby

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Re: Dynamic selection list

2006-07-04 Thread Jason Johnston


Toby wrote:

I'm trying to implement a dynamic selection list for a form field.
I need to extract the selection values and labels from a database.

The only way of filling a selection list with dynamic values, that I
could glean from the documentation, is by using flow-jxpath.

Which poses the problem of how to make a SQL query in javascript.


It can be done, though the syntax isn't quite as nice.  You could also 
implement the query in a Java method and just call that method from 
Javascript to get back a List of items.


But there's also JavaSelectionList, which mysteriously doesn't appear to 
be in the published user docs.  It sounds like this is closer to what 
you're looking for.


To use it, create a Java class that extends 
AbstractJavaSelectionList[1].  It will need to implement the build() 
abstract method; in this method you can run your query to get the list 
of items, and then add those items to the selection list by calling 
addItem(value, label) for each.  Then return either true or false 
depending on whether or not you want the selection list to be rebuilt 
every time or just the first time.


Then in your form definition, reference your class like so:


   ...
   


The fd:selection-list element also accepts a nullable="true" attribute 
for if you want a null item to be added to the top of the list.


In addition, you can add any arbitrary attributes you want and then 
access their values within your Java class via getAttribute(name).  This 
is a very easy way to use the same class many times with different 
parameters affecting its behavior.


Hope that helps!
--Jason

[1] 
http://cocoon.apache.org/2.1/apidocs/org/apache/cocoon/forms/datatype/AbstractJavaSelectionList.html





Or, if flowscript could fetch an arbitrary sitemap URI and access the
generated XML data, I could write the query in ESQL.  Is it possible?

Am I barking at the wrong tree here?  How should I proceed?


Toby




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Dynamic selection list

2006-07-04 Thread Toby

I'm trying to implement a dynamic selection list for a form field.
I need to extract the selection values and labels from a database.

The only way of filling a selection list with dynamic values, that I
could glean from the documentation, is by using flow-jxpath.

Which poses the problem of how to make a SQL query in javascript.

Or, if flowscript could fetch an arbitrary sitemap URI and access the
generated XML data, I could write the query in ESQL.  Is it possible?

Am I barking at the wrong tree here?  How should I proceed?


Toby

-- 
Signed/encrypted mail welcome.  GPG/PGP Key-Id: 0x15C5C2EA

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Re: Sitemap javaflow / flowscript combo

2006-07-04 Thread Andrew Madu

HiThe whole continuation management infrastructure is still waiting for an
overhaul. (Probably not even that much work)Ah! I suppose my follow on question from that response would be which flow model to follow then, java or _javascript_? Is there any point in having more than one definitive model? I mean is there any point in having one model, _javascript_, which supports the cocoon object and another, java, which does not? Would it not be better to just fully implement the best model and be done with all the other half baked ones???
regardsAndrew

RE: Caching jx with flow (WAS: Is use-store needed when using XSLTC ?)


> > ...What about a talk about Cocoon caching at the Cocoon 
> GetTogether?..
> 
> Big +1, it seems you Hippo guys have done some interesting stuff with
> caching, it would be cool to share your experience.

Quite frankly I think we are just using the caching possibilities provided by 
cocoon, no more no less. But, that might still be interesting for many people, 
because not everybody might be aware of it. About speaking, well, don't think I 
am that much of a speaker, combined with the fact that I will be arriving at 
7:00 in the morning oct the 2th from vacation...I will think about it. I also 
will be working on a some sort of best practice manual about 
caching/performance/running live/etc etc...

I will keep you posted, but must say I am very occupied at the moment. Trying 
to achieve this "manual" in the upcoming weeks

Regards Ard

> 
> -Bertrand
> 
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> 

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RE: cache

I assume you are referring to the default cocoon cache (EHDefaultStore).

You can set timeToLiveSeconds and timeToLiveIdle

See http://marc.theaimsgroup.com/?l=xml-cocoon-users&m=115193368622073&w=2 for 
extensive overview

Ard 

-- 

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Oosteinde 11
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The Netherlands
Tel  +31 (0)20 5224466
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> 
> 
> Is there any way to make cocoon cache last not so long?
> 
> 
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Re: too many open files


On 7/4/06, Bokluci <[EMAIL PROTECTED]> wrote:

How high should be "very high load"? over 10 000 hits a day?


Impossible to say, it all depends on how the replies to these hits are
generated, and your traffic patterns. You need to measure the
performance with simulated or actual load to make decisions about
this.

10'000 hits a day (86'400 seconds) can be as low as 0.12 per second if
evenly spread, which is not much at all. OTOH if these hits come
within 2 minutes...you get the idea.


...Are there any drawbacks running cocoon as non privileged user?...


Not that I know, quite the contrary, except that it cannot listen on
port 80 then. But it's a good idea to put an httpd / reverse proxy in
front anyway.

-Bertrand

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RE: caching RSS feeds or external xml files (WAS: Caching jx with flow)

>
> > 

> For the last point, there was implementation[1] of Excalibur's source 
> which was meeting our expectations. Good explanation how to 
> use it was 
> there[2]. However, this code was in 'scratchpad' block and 
> was removed 
> in 2.1.7 release as no one was maintaining it. Valuable gems has been 
> lost, unfortunately.

It is not removed: 
cocoon/trunk/block/cocoon-scratchpad/cocoon-scratchpad-impl/src/main/java/org/apache/cocoon/components/source/impl

It is by far the most important block there is for us at Hippo. Though, we 
modified it because we had problems with not serialiable responses which we had 
to account for (Actually I believe there is an error in scratchpad resulting in 
a NPE, but I did not do the rebuilding so I would have to lookup where that 
was).

But is sounds logical to embed it into this block. Only not sure if I will have 
time for this on short notice. Bertrand mailed an easy, though effictive way of 
using external rss. A cocoon cron job is also possible for this.

> 
> > I want this behavior to have the following behavior:
> >
> > Fetching rss/xml only when modified is clear I suppose. 
> Caching the content is necessary to have the content 
> available when you get a 304. You might have an external rss 
> that lacks proper headers, making your generator having to 
> regenerate the rss every time. Therefore, making the cache 
> also expiring gives you the possibility to only ask for the 
> rss every X minutes. At last, quite an important one, a 
> failing external rss can make your cocoon app waiting very 
> long for the external source, resulting in a broken front end.
> >
> > I think it is not very hard to make an external rss/xml 
> generator that meets these 4 points (or adding a http scheme 
> to the source-factories with a component-instance that 
> behaves accordingly), but I am afraid that it must be in 
> cocoon somewhere already...
> >   
> As for now I cannot work on this but in not-so-distant future I could 
> port and document cached source into 2.1.x's core of course 
> question is 
> if patch would be accepted.
> My gut feeling is that conditional gets are not implemented in 
> Cocoon/Excalibur and I have no idea if would be hard "fix" it.

I am not sure either...would have to look into it as well. Perhaps in a few 
weeks

Regards Ard

> Any hints greatly appreciated.
> 
> -- 
> Grzegorz Kossakowski
> 
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>

cache

2006-07-04 Thread Bokluci

Is there any way to make cocoon cache last not so long?


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Re: caching RSS feeds or external xml files (WAS: Caching jx with flow)


On 7/4/06, Ard Schrijvers <[EMAIL PROTECTED]> wrote:


...I am not very keen on this kind of solutions..


Of course, this is not the ultimate solution. Just wanted to point it
out, as depending on your environment and needs it's a simple and good
enough solution.

-Bertrand

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RE: too many open files

2006-07-04 Thread Bokluci

How high should be "very high load"? over 10 000 hits a day?
Are there any drawbacks running cocoon as non privileged user?

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of
Bertrand Delacretaz
Sent: Tuesday, July 04, 2006 1:34 PM
To: users@cocoon.apache.org
Subject: Re: too many open files

On 7/4/06, Bokluci <[EMAIL PROTECTED]> wrote:

> ...Are there any drawbacks if I use it alone with the standard
> bundled server?...

Not necessarily, it's not optimized for very high loads but runs just
fine on several of my production systems, with up to 9 months uptime
until now.

-Bertrand

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RE: caching RSS feeds or external xml files (WAS: Caching jx with flow)


> 
> > ...I think it is not very hard to make an external rss/xml 
> generator that meets these 4 points...but I am afraid that it 
> must be in cocoon somewhere already...
> 
> A fairly effective poor man's way of doing this, as someone also
> suggested recently, is to use an external cron job to fetch a feed's
> XML, check that it is well-formed (in case you don't trust the backend
> too much), and replace a local copy with the new version if different.

That was me suggesting that one and also used that one. I just don't like the 
cron-job part and extra dependencies your cocoon app is depending on. It does 
work though, but I am not very keen on this kind of solutions

Ard 


> 
> A full-blown generator is of course a cleaner way of handling this,
> but if someone's interested, here's a script that I use to implement
> such a scenario. I'm using xmlfw to check the XML, but many other
> tools would do.
> 
> ME=$(basename $0)
> URL=$1
> FINAL_OUTPUT=$2
> OUTPUT_DIR=/tmp/$ME-$$
> USAGE="usage: $ME url_to_retrieve output_file (example: $ME
> http://somefeed.ch/rdf/ /tmp/output.xml)"
> 
> # this name is fixed by xmlfw, hence the variable OUTPUT_DIR
> TEMP_FILE=$OUTPUT_DIR/STDIN
> 
> fatal() {
> echo $ME: $*
> rmdir $OUTPUT_DIR 2>/dev/null
> exit 1
> }
> 
> [[ -n "$URL" ]] || fatal $USAGE
> [[ -n "$FINAL_OUTPUT" ]] || fatal $USAGE
> 
> # use wget to retrieve URL
> # xmlfw checks well-formedness and only if ok copies file to
> # output dir, using STDIN as the filename
> mkdir -p $OUTPUT_DIR
> rm -f $TEMP_FILE
> ( wget -q -O- $URL | xmlwf -d $OUTPUT_DIR -c )
> [[ -f $TEMP_FILE ]] || fatal "did not get well-formed XML from $URL"
> mv $TEMP_FILE $FINAL_OUTPUT
> 
> 
> -Bertrand
> 
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> 
> 

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Re: too many open files


On 7/4/06, Bokluci <[EMAIL PROTECTED]> wrote:


...Are there any drawbacks if I use it alone with the standard
bundled server?...


Not necessarily, it's not optimized for very high loads but runs just
fine on several of my production systems, with up to 9 months uptime
until now.

-Bertrand

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RE: too many open files

2006-07-04 Thread Bokluci

As a matter of a fact I'm not using cocoon with combination with tomcat,
should I? Are there any drawbacks if I use it alone with the standard
bundled server?

-Original Message-
From: Cayetano [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, July 04, 2006 8:13 AM
To: users@cocoon.apache.org
Subject: Re: too many open files

> > ...What do you mean by "what kind of app is this?"...
>
> The question is, what are your application patterns, i.e. do you use
> many XSLT transforms, or the SQLTransformer, often call external
> processes, use a lot of Flow and/or CForms, etc..
>

And i would add: running with Tomcat under Linux with a non-privileged user?
(see /etc/security/limits.conf)

Cayetano

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Re: too many open files


On 7/4/06, Geert Josten <[EMAIL PROTECTED]> wrote:

...I heard something about a Java bug that seemed to cause these kinds of
errors...


Which might be: using the Process object and not explicitely closing
its channels, see http://codeconsult.ch/bertrand/archives/000456.html

-Bertrand

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Re: Caching jx with flow (WAS: Is use-store needed when using XSLTC ?)


On 7/4/06, Niels van Kampenhout <[EMAIL PROTECTED]> wrote:


...What about a talk about Cocoon caching at the Cocoon GetTogether?..


Big +1, it seems you Hippo guys have done some interesting stuff with
caching, it would be cool to share your experience.

-Bertrand

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Re: caching RSS feeds or external xml files (WAS: Caching jx with flow)


On 7/4/06, Ard Schrijvers <[EMAIL PROTECTED]> wrote:


...I think it is not very hard to make an external rss/xml generator that meets 
these 4 points...but I am afraid that it must be in cocoon somewhere already...


A fairly effective poor man's way of doing this, as someone also
suggested recently, is to use an external cron job to fetch a feed's
XML, check that it is well-formed (in case you don't trust the backend
too much), and replace a local copy with the new version if different.

A full-blown generator is of course a cleaner way of handling this,
but if someone's interested, here's a script that I use to implement
such a scenario. I'm using xmlfw to check the XML, but many other
tools would do.

ME=$(basename $0)
URL=$1
FINAL_OUTPUT=$2
OUTPUT_DIR=/tmp/$ME-$$
USAGE="usage: $ME url_to_retrieve output_file (example: $ME
http://somefeed.ch/rdf/ /tmp/output.xml)"

# this name is fixed by xmlfw, hence the variable OUTPUT_DIR
TEMP_FILE=$OUTPUT_DIR/STDIN

fatal() {
   echo $ME: $*
   rmdir $OUTPUT_DIR 2>/dev/null
   exit 1
}

[[ -n "$URL" ]] || fatal $USAGE
[[ -n "$FINAL_OUTPUT" ]] || fatal $USAGE

# use wget to retrieve URL
# xmlfw checks well-formedness and only if ok copies file to
# output dir, using STDIN as the filename
mkdir -p $OUTPUT_DIR
rm -f $TEMP_FILE
( wget -q -O- $URL | xmlwf -d $OUTPUT_DIR -c )
[[ -f $TEMP_FILE ]] || fatal "did not get well-formed XML from $URL"
mv $TEMP_FILE $FINAL_OUTPUT


-Bertrand

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Re: caching RSS feeds or external xml files (WAS: Caching jx with flow)


Grzegorz Kossakowski napisał(a):

Ard Schrijvers napisał(a):
IMHO generator is not suitable for this task as it would lead to bogus 
pipelines only for proxing. E.g. you want include your RSS via 
XInclude, then you have to build



And call this pipeline thought cocoon:/ protocol. Given that, it seems 
that http scheme/Excalibur's source is more convenient.
For the last point, there was implementation[1] of Excalibur's source 
which was meeting our expectations. Good explanation how to use it was 
there[2]. However, this code was in 'scratchpad' block and was removed 
in 2.1.7 release as no one was maintaining it. Valuable gems has been 
lost, unfortunately.


As for now I cannot work on this but in not-so-distant future I could 
port and document cached source into 2.1.x's core of course question 
is if patch would be accepted.
My gut feeling is that conditional gets are not implemented in 
Cocoon/Excalibur and I have no idea if would be hard "fix" it.

Any hints greatly appreciated.


*Gosh* forgot about links:
[1] 
http://svn.apache.org/viewvc/cocoon/tags/RELEASE_2_1_6/src/blocks/scratchpad/java/org/apache/cocoon/components/source/impl/
[2] 
http://svn.apache.org/viewvc/cocoon/tags/RELEASE_2_1_6/src/blocks/scratchpad/conf/caching-source.xconf?view=markup


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Re: caching RSS feeds or external xml files (WAS: Caching jx with flow)

Ard Schrijvers napisał(a):

Considering caching RSS feeds. Is there any option to configure cocoon
(maybe by using some source protocol?) to behave like proxy and do not
break the rest of cached content?

Any chance to do conditional gets? [1]

[1] http://fishbowl.pastiche.org/2002/10/21/http_conditional_get_for_rss_hackers

I know there are some proxy generators around (see blocks/proxy for
GenericProxyGenerator.java, HttpProxyGenerator.java,
WebServiceProxyGenerator.java), though I haven't had a close look at them, but
I don't think they do what you want them to do, and probably you haven't
configured them anyway.

IMHO generator is not suitable for this task as it would lead to bogus
pipelines only for proxing. E.g. you want include your RSS via XInclude,
then you have to build

And call this pipeline thought cocoon:/ protocol. Given that, it seems
that http scheme/Excalibur's source is more convenient.

Anyway, by default, when generating an external rss, you will probably have
something like:

http://www.foo.org/rss"/>

Unless you have specified a specific source-factories for http in your
cocoon.xconf, this uri scheme will be managed by
org.apache.excalibur.source.impl.URLSourceFactory. I am not sure if this
URLSourceFactory delivers what you want, but I don't think so. Then again, I
think when working with external (http) sources like rss, one wants the
following behavior:

1) fetch the rss/xml only when modified
2) have the fetched content cached
3) have the fetched content cached with an expires (configurable)
4) have a configurable connection time out (we had cocoon apps completely
hanging on failing external rss feeds)

I think cocoon is particularly well suited for xml content aggregation of external sources, but I haven't found something that managed the above 4 (logical) demands for it (Anybodyis it in there already? Portal block? Do I miss something?)

For the last point, there was implementation[1] of Excalibur's source
which was meeting our expectations. Good explanation how to use it was
there[2]. However, this code was in 'scratchpad' block and was removed
in 2.1.7 release as no one was maintaining it. Valuable gems has been
lost, unfortunately.

I want this behavior to have the following behavior:

Fetching rss/xml only when modified is clear I suppose. Caching the content is
necessary to have the content available when you get a 304. You might have an
external rss that lacks proper headers, making your generator having to
regenerate the rss every time. Therefore, making the cache also expiring gives
you the possibility to only ask for the rss every X minutes. At last, quite an
important one, a failing external rss can make your cocoon app waiting very
long for the external source, resulting in a broken front end.

I think it is not very hard to make an external rss/xml generator that meets
these 4 points (or adding a http scheme to the source-factories with a
component-instance that behaves accordingly), but I am afraid that it must be
in cocoon somewhere already...

As for now I cannot work on this but in not-so-distant future I could
port and document cached source into 2.1.x's core of course question is
if patch would be accepted.
My gut feeling is that conditional gets are not implemented in
Cocoon/Excalibur and I have no idea if would be hard "fix" it.

Any hints greatly appreciated.

--
Grzegorz Kossakowski

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Re: Sitemap javaflow / flowscript combo

2006-07-04 Thread Torsten Curdt


Hi,
is it yet possible, in 2.1.9, to declare more than one flow resource in java
and javascript?


Not absolutely 100% but I think this has not been fixed yet. The whole
continuation management infrastructure is still waiting for an
overhaul. (Probably not even that much work)

cheers
--
Torsten

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caching RSS feeds or external xml files (WAS: Caching jx with flow)




Considering caching RSS feeds. Is there any option to configure cocoon 
(maybe by using some source protocol?) to behave like proxy and do not 
break the rest of cached content?
Any chance to do conditional gets? [1]

[1] http://fishbowl.pastiche.org/2002/10/21/http_conditional_get_for_rss_hackers



I know there are some proxy generators around (see blocks/proxy for 
GenericProxyGenerator.java, HttpProxyGenerator.java, 
WebServiceProxyGenerator.java), though I haven't had a close look at them, but 
I don't think they do what you want them to do, and probably you haven't 
configured them anyway. I am not familiar with the cocoon portal block, but I 
would guess that xml from different locations is frequently generated over 
there (and thus one expects this to be done effectively...anybody who knows 
more about this?)

Anyway, by default, when generating an external rss, you will probably have 
something like:

http://www.foo.org/rss"/>

Unless you have specified a specific source-factories for http in your 
cocoon.xconf, this uri scheme will be managed by 
org.apache.excalibur.source.impl.URLSourceFactory. I am not sure if this 
URLSourceFactory delivers what you want, but I don't think so. Then again, I 
think when working with external (http) sources like rss, one wants the 
following behavior:

1) fetch the rss/xml only when modified
2) have the fetched content cached
3) have the fetched content cached with an expires (configurable)
4) have a configurable connection time out (we had cocoon apps completely 
hanging on failing external rss feeds)

I think cocoon is particularly well suited for xml content aggregation of 
external sources, but I haven't found something that managed the above 4 
(logical) demands for it (Anybodyis it in there already? Portal block? Do I 
miss something?)

I want this behavior to have the following behavior:

Fetching rss/xml only when modified is clear I suppose. Caching the content is 
necessary to have the content available when you get a 304. You might have an 
external rss that lacks proper headers, making your generator having to 
regenerate the rss every time. Therefore, making the cache also expiring gives 
you the possibility to only ask for the rss every X minutes. At last, quite an 
important one, a failing external rss can make your cocoon app waiting very 
long for the external source, resulting in a broken front end.

I think it is not very hard to make an external rss/xml generator that meets 
these 4 points (or adding a http scheme to the source-factories with a 
component-instance that behaves accordingly), but I am afraid that it must be 
in cocoon somewhere already...

Regards Ard






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Sitemap javaflow / flowscript combo

2006-07-04 Thread Andrew Madu

Hi,is it yet possible, in 2.1.9, to declare more than one flow resource in java and _javascript_? So for example can I do the following?: 
    
   regardsAndrew

Re: Caching jx with flow (WAS: Is use-store needed when using XSLTC ?)


Ard Schrijvers napisał(a):

Hmmm, I hoped my mails would be so clear that it is not needed anymore :-) But 
your right, I probably should, but it takes a lot of time and effort to write 
it down really well

Anyway, are there people interested in a document on cocoon caching with best 
practice and some examples regarding:

- The different strategies (noncaching, caching, ecaching/eventcaching, expiring) and when to use 
them. Appending some use-cases like "how to cache untill 0:00 hours exactly" , and 
"how to cache an external rss feed properly"
  
Considering caching RSS feeds. Is there any option to configure cocoon 
(maybe by using some source protocol?) to behave like proxy and do not 
break the rest of cached content?

Any chance to do conditional gets? [1]

- How to configure your stores properly "important for keeping you cache clean"

- Some tools to measure performance and caching

- How to cache your jx templates. 


- The "watch out's" in configuring your components (for example in your TraxTransformer 
setting true can easily bring your 
cocoon app down when a crawler comes by )

- Which tools can help me finding the flaws (solex/tcpmon/charles(last one not 
free) )

Above is more or less configuration and examples. Below might be the some more 
advanced topics

- When writing your own cacheable component what to keep in mind (you can 
easile makes things 100% cached while regenerating them would be faster)

- How does the cocoon cache mechanism work 
(http://cocoon.zones.apache.org/daisy/documentation/writing/690.html)

- and probably all the other things that come to mind


But, I am not sure how much is already out there in documentation (probably there is quite a lot, 
but it is scattered around, outdated, and it is of course in a wiki form which is basically the 
equivalent of "cant find the [EMAIL PROTECTED]@ thing" ), and I am willing to make one 
solid "best-practice-regarding-performance", but before that, I want to know if there is 
interest in it. It will cost me many (probably of my sparetime) hours to complete this, and I don't 
bother, but if this is just basic stuff for everybody, then of course, I am wasting my time.
I would be very interested in this! It would be also great to explain 
how cocoon's cache internal works. Especially, in order to get enough 
knowledge to write one's own components. For example, XInclude 
transformer seems to be very interesting case.


[1] http://fishbowl.pastiche.org/2002/10/21/http_conditional_get_for_rss_hackers


--
Grzegorz Kossakowski


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cocoon-forms-block.jar opened file

2006-07-04 Thread Carlos Maté

Hi.
We are using cocoon 2.1.7 and Sun ONE Web Server 6.1 in Solaris 8
We have "TO MANY OPENED FILES" Error.
Thanks to lsof   we can see that when a user logs into the  application, websrvd opens cocoon-forms-block.jar and never closes them. Finally Web Server fails and we must restart it.
Any suggestion?
Thanks.

Re: Is use-store needed when using XSLTC ?

2006-07-04 Thread Cocoon Man

 
Yes, I saw it via Google. But I just wanted to know whether this XSL2HTML was provided with Cocoon or not. 
Regards 
2006/7/4, Grzegorz Kossakowski <[EMAIL PROTECTED]>:
Cocoon Man napisał(a):>>> You can follow what is cached in the different stores via the
> StatusGenerator.>> Regards Ard>> I've declared the StatusGenerator in my sitemap and it works fine !> Is there a default XML2HTML stylesheet associated to this generator,
> like for the profiler ?>> Regards,Have you looked at this:http://cocoon.zones.apache.org/demos/21branch/samples/status.html
 ?--Grzegorz Kossakowski-To unsubscribe, e-mail: [EMAIL PROTECTED]
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Re: Is use-store needed when using XSLTC ?