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Posted to users@camel.apache.org by Castyn <er...@gmail.com> on 2011/12/06 18:07:46 UTC
Date String Creation
I am curious what the best way is to create a date string that supports
xsl:date format?
For instance if I wanted to create a date string for an hour ago in the
format yyyy-MM-ddThh:mm:ss-offset what would the best way to go about it be?
I know there are some simple commands such as ${date:now:...}, or that it
could possible be done through a javascript function that just outputs the
string, but I am curious if there is a better way or how to implement the
simple statement.
--
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Re: Date String Creation
Posted by Raul Kripalani <ra...@fusesource.com>.
Hi,
If you don't mind using XQuery as an expression language for achieving
this, you could use the following instead of using a Bean. IMHO, this is
more natural, as it uses XML languages themselves to spit out an
XML-compliant dateTime format ;)
<setHeader headerName="myDate">
<xquery type="java.lang.String" xmlns:xs="
http://www.w3.org/2001/XMLSchema">xs:dateTime(current-dateTime()) -
xs:dayTimeDuration('P1D')</xquery>
</setHeader>
Couple of things:
- Providing the type is absolutely necessary (java.lang.String in the
above example)
- You need to specify the XML Schema namespace. If you want the
expression XML element to be lighter, you could push up the namespace
declaration to the <route>, <camelContext> element or above
- You can construct the duration dynamically by using the concat()
function.
- Make sure that camel-saxon is on your classpath, or that the
camel-saxon feature is installed if you are using ServiceMix/Karaf -
whatever is relevant in your case.
Hope this helps.
Regards,
Raúl.
On 7 December 2011 16:00, Claus Ibsen <cl...@gmail.com> wrote:
> On Wed, Dec 7, 2011 at 4:47 PM, Castyn <er...@gmail.com> wrote:
> > So if I declared a bean with id of getLastRunDate that returned a string
> of
> > the appropriate date format, how do you actually call that in the Spring
> DSL
> > to set a header?
> >
>
> Use the method call expression, something a like this:
>
> <setHeader headerName="myDate">
> <method ref="myBean" method="getLastRunDate"/>
> </setHeader>
>
>
>
> > --
> > View this message in context:
> http://camel.465427.n5.nabble.com/Date-String-Creation-tp5052753p5056060.html
> > Sent from the Camel - Users mailing list archive at Nabble.com.
>
>
>
> --
> Claus Ibsen
> -----------------
> FuseSource
> Email: cibsen@fusesource.com
> Web: http://fusesource.com
> Twitter: davsclaus, fusenews
> Blog: http://davsclaus.blogspot.com/
> Author of Camel in Action: http://www.manning.com/ibsen/
>
Re: Date String Creation
Posted by Claus Ibsen <cl...@gmail.com>.
On Thu, Dec 8, 2011 at 1:51 PM, Claus Ibsen <cl...@gmail.com> wrote:
> On Thu, Dec 8, 2011 at 6:55 AM, Castyn <er...@gmail.com> wrote:
>> For example, lets say I had a value in a route that I could get with some
>> simple xpath, but I needed to pass that as a parameter to a bean that would
>> do some calculation on that value and return it, so that I could then set it
>> as a header or such. Is there a way this could be done without relying on a
>> custom processor?
>>
>> For instance, I know I can do the following to get a value from a bean
>> method:
>> <setHeader headerName="lastRunDate">
>> <method ref="lastRun" method="getLastRunDate"/>
>> </setHeader>
>>
>> But what if I want to have a bean that will take in a value thatis not the
>> entire message body and do something with it? Such as a value resolved from
>> this expression:
>> <xpath resultType="java.lang.String">//s:randomInfo</xpath>
>>
>>
>> How can that be best accomplished? I know a custom processor allows you
>> full access to the headers and body, as would a bean with annotations of the
>> headers and body, but it seems like overkill if all I would want to do is
>> set and retrieve a value from a bean such as a singleton to be utilized by
>> the route.
>>
>
> Btw we talked some time ago about letting the method call expression
> accept a list of expressions in the XML DSL,
> so each expression maps to the given parameter index.
>
> That way you can embed an xpath expression to map the parameter at
> that index. And for other parameters you can use <simple> <constant>
> etc.
>
I created a ticket to track this.
https://issues.apache.org/jira/browse/CAMEL-4753
>
>> --
>> View this message in context: http://camel.465427.n5.nabble.com/Date-String-Creation-tp5052753p5057766.html
>> Sent from the Camel - Users mailing list archive at Nabble.com.
>
>
>
> --
> Claus Ibsen
> -----------------
> FuseSource
> Email: cibsen@fusesource.com
> Web: http://fusesource.com
> Twitter: davsclaus, fusenews
> Blog: http://davsclaus.blogspot.com/
> Author of Camel in Action: http://www.manning.com/ibsen/
--
Claus Ibsen
-----------------
FuseSource
Email: cibsen@fusesource.com
Web: http://fusesource.com
Twitter: davsclaus, fusenews
Blog: http://davsclaus.blogspot.com/
Author of Camel in Action: http://www.manning.com/ibsen/
Re: Date String Creation
Posted by Claus Ibsen <cl...@gmail.com>.
On Thu, Dec 8, 2011 at 6:55 AM, Castyn <er...@gmail.com> wrote:
> For example, lets say I had a value in a route that I could get with some
> simple xpath, but I needed to pass that as a parameter to a bean that would
> do some calculation on that value and return it, so that I could then set it
> as a header or such. Is there a way this could be done without relying on a
> custom processor?
>
> For instance, I know I can do the following to get a value from a bean
> method:
> <setHeader headerName="lastRunDate">
> <method ref="lastRun" method="getLastRunDate"/>
> </setHeader>
>
> But what if I want to have a bean that will take in a value thatis not the
> entire message body and do something with it? Such as a value resolved from
> this expression:
> <xpath resultType="java.lang.String">//s:randomInfo</xpath>
>
>
> How can that be best accomplished? I know a custom processor allows you
> full access to the headers and body, as would a bean with annotations of the
> headers and body, but it seems like overkill if all I would want to do is
> set and retrieve a value from a bean such as a singleton to be utilized by
> the route.
>
Btw we talked some time ago about letting the method call expression
accept a list of expressions in the XML DSL,
so each expression maps to the given parameter index.
That way you can embed an xpath expression to map the parameter at
that index. And for other parameters you can use <simple> <constant>
etc.
> --
> View this message in context: http://camel.465427.n5.nabble.com/Date-String-Creation-tp5052753p5057766.html
> Sent from the Camel - Users mailing list archive at Nabble.com.
--
Claus Ibsen
-----------------
FuseSource
Email: cibsen@fusesource.com
Web: http://fusesource.com
Twitter: davsclaus, fusenews
Blog: http://davsclaus.blogspot.com/
Author of Camel in Action: http://www.manning.com/ibsen/
Re: Date String Creation
Posted by Claus Ibsen <cl...@gmail.com>.
On Thu, Dec 8, 2011 at 3:28 PM, Castyn <er...@gmail.com> wrote:
>
> Raul Kripalani wrote
>>
>> Once again, if your messages are XML and you want to manipulate
>> dateTime types, I suggest you use the standard XPath/XQuery functions.
>> It's gonna be simpler and probably faster.
>>
>> Both the XQuery example or the XPath language (with Saxon as a Factory
>> as support for XPath 2.0 is needed) would do the trick.
>>
>>
>
> Well, after thinking on what I actually need to do I don't think it will be
> that simple. I need to track whenever the last time the route was run. So
> basically the route would run such as
>
> Timer -> get Last Successful Run Time -> Do More Route Stuff -> If
> successful, set Last Successful Run Time
>
> At first I thought a simple delta on a run time would work, but given the
> possiblity for errors, needing the ability to set a default Last Run Time
> and such, I think it needs to be a bit more complex. I have considered a
> singleton on the osgi container that would track the state a bit, but I am
> not sure that is the best option here. Still trying to figure out what
> route I should go in order to manage this run date.
>
Each Camel route is registered in JMX, where you got a number of JMX stats.
Of course this is only avail if JMX is not disabled (JMX is enabled by default).
You could then query the JMX for the route stats.
Just boot up a Camel app, and start jconsole, then you can connect to
the Camel app.
And then you can browse the JMX tree and see what details you have.
> --
> View this message in context: http://camel.465427.n5.nabble.com/Date-String-Creation-tp5052753p5058954.html
> Sent from the Camel - Users mailing list archive at Nabble.com.
--
Claus Ibsen
-----------------
FuseSource
Email: cibsen@fusesource.com
Web: http://fusesource.com
Twitter: davsclaus, fusenews
Blog: http://davsclaus.blogspot.com/
Author of Camel in Action: http://www.manning.com/ibsen/
Re: Date String Creation
Posted by Castyn <er...@gmail.com>.
Raul Kripalani wrote
>
> Once again, if your messages are XML and you want to manipulate
> dateTime types, I suggest you use the standard XPath/XQuery functions.
> It's gonna be simpler and probably faster.
>
> Both the XQuery example or the XPath language (with Saxon as a Factory
> as support for XPath 2.0 is needed) would do the trick.
>
>
Well, after thinking on what I actually need to do I don't think it will be
that simple. I need to track whenever the last time the route was run. So
basically the route would run such as
Timer -> get Last Successful Run Time -> Do More Route Stuff -> If
successful, set Last Successful Run Time
At first I thought a simple delta on a run time would work, but given the
possiblity for errors, needing the ability to set a default Last Run Time
and such, I think it needs to be a bit more complex. I have considered a
singleton on the osgi container that would track the state a bit, but I am
not sure that is the best option here. Still trying to figure out what
route I should go in order to manage this run date.
--
View this message in context: http://camel.465427.n5.nabble.com/Date-String-Creation-tp5052753p5058954.html
Sent from the Camel - Users mailing list archive at Nabble.com.
Re: Date String Creation
Posted by Raul Kripalani <ra...@fusesource.com>.
Once again, if your messages are XML and you want to manipulate
dateTime types, I suggest you use the standard XPath/XQuery functions.
It's gonna be simpler and probably faster.
Both the XQuery example or the XPath language (with Saxon as a Factory
as support for XPath 2.0 is needed) would do the trick.
On 8 Dec 2011, at 05:56, Castyn <er...@gmail.com> wrote:
> For example, lets say I had a value in a route that I could get with some
> simple xpath, but I needed to pass that as a parameter to a bean that would
> do some calculation on that value and return it, so that I could then set it
> as a header or such. Is there a way this could be done without relying on a
> custom processor?
>
> For instance, I know I can do the following to get a value from a bean
> method:
> <setHeader headerName="lastRunDate">
> <method ref="lastRun" method="getLastRunDate"/>
> </setHeader>
>
> But what if I want to have a bean that will take in a value thatis not the
> entire message body and do something with it? Such as a value resolved from
> this expression:
> <xpath resultType="java.lang.String">//s:randomInfo</xpath>
>
>
> How can that be best accomplished? I know a custom processor allows you
> full access to the headers and body, as would a bean with annotations of the
> headers and body, but it seems like overkill if all I would want to do is
> set and retrieve a value from a bean such as a singleton to be utilized by
> the route.
>
> --
> View this message in context: http://camel.465427.n5.nabble.com/Date-String-Creation-tp5052753p5057766.html
> Sent from the Camel - Users mailing list archive at Nabble.com.
Re: Date String Creation
Posted by Claus Ibsen <cl...@gmail.com>.
See the @XPath annotation you can use with Camel.
http://camel.apache.org/bean-binding.html
http://camel.apache.org/xpath.html
On Thu, Dec 8, 2011 at 6:55 AM, Castyn <er...@gmail.com> wrote:
> For example, lets say I had a value in a route that I could get with some
> simple xpath, but I needed to pass that as a parameter to a bean that would
> do some calculation on that value and return it, so that I could then set it
> as a header or such. Is there a way this could be done without relying on a
> custom processor?
>
> For instance, I know I can do the following to get a value from a bean
> method:
> <setHeader headerName="lastRunDate">
> <method ref="lastRun" method="getLastRunDate"/>
> </setHeader>
>
> But what if I want to have a bean that will take in a value thatis not the
> entire message body and do something with it? Such as a value resolved from
> this expression:
> <xpath resultType="java.lang.String">//s:randomInfo</xpath>
>
>
> How can that be best accomplished? I know a custom processor allows you
> full access to the headers and body, as would a bean with annotations of the
> headers and body, but it seems like overkill if all I would want to do is
> set and retrieve a value from a bean such as a singleton to be utilized by
> the route.
>
> --
> View this message in context: http://camel.465427.n5.nabble.com/Date-String-Creation-tp5052753p5057766.html
> Sent from the Camel - Users mailing list archive at Nabble.com.
--
Claus Ibsen
-----------------
FuseSource
Email: cibsen@fusesource.com
Web: http://fusesource.com
Twitter: davsclaus, fusenews
Blog: http://davsclaus.blogspot.com/
Author of Camel in Action: http://www.manning.com/ibsen/
Re: Date String Creation
Posted by Castyn <er...@gmail.com>.
For example, lets say I had a value in a route that I could get with some
simple xpath, but I needed to pass that as a parameter to a bean that would
do some calculation on that value and return it, so that I could then set it
as a header or such. Is there a way this could be done without relying on a
custom processor?
For instance, I know I can do the following to get a value from a bean
method:
<setHeader headerName="lastRunDate">
<method ref="lastRun" method="getLastRunDate"/>
</setHeader>
But what if I want to have a bean that will take in a value thatis not the
entire message body and do something with it? Such as a value resolved from
this expression:
<xpath resultType="java.lang.String">//s:randomInfo</xpath>
How can that be best accomplished? I know a custom processor allows you
full access to the headers and body, as would a bean with annotations of the
headers and body, but it seems like overkill if all I would want to do is
set and retrieve a value from a bean such as a singleton to be utilized by
the route.
--
View this message in context: http://camel.465427.n5.nabble.com/Date-String-Creation-tp5052753p5057766.html
Sent from the Camel - Users mailing list archive at Nabble.com.
Re: Date String Creation
Posted by Castyn <er...@gmail.com>.
When using a method call expression, how do you use parameters to the bean
methods within the method tag?
--
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Sent from the Camel - Users mailing list archive at Nabble.com.
Re: Date String Creation
Posted by Claus Ibsen <cl...@gmail.com>.
On Wed, Dec 7, 2011 at 4:47 PM, Castyn <er...@gmail.com> wrote:
> So if I declared a bean with id of getLastRunDate that returned a string of
> the appropriate date format, how do you actually call that in the Spring DSL
> to set a header?
>
Use the method call expression, something a like this:
<setHeader headerName="myDate">
<method ref="myBean" method="getLastRunDate"/>
</setHeader>
> --
> View this message in context: http://camel.465427.n5.nabble.com/Date-String-Creation-tp5052753p5056060.html
> Sent from the Camel - Users mailing list archive at Nabble.com.
--
Claus Ibsen
-----------------
FuseSource
Email: cibsen@fusesource.com
Web: http://fusesource.com
Twitter: davsclaus, fusenews
Blog: http://davsclaus.blogspot.com/
Author of Camel in Action: http://www.manning.com/ibsen/
Re: Date String Creation
Posted by Castyn <er...@gmail.com>.
So if I declared a bean with id of getLastRunDate that returned a string of
the appropriate date format, how do you actually call that in the Spring DSL
to set a header?
--
View this message in context: http://camel.465427.n5.nabble.com/Date-String-Creation-tp5052753p5056060.html
Sent from the Camel - Users mailing list archive at Nabble.com.
Re: Date String Creation
Posted by Craig Taylor <ct...@ctalkobt.net>.
Actually, one *ugly* way that springs to mind is to adjust the offset by -1
to remove an hour from the time..
I use a processor which sets a date property (CALC_DATE) which allows
passing in a number of values to manipulate the date ( round to date field,
add date field, add amount ) (concerned about more than just hours).
On Tue, Dec 6, 2011 at 11:31 PM, Claus Ibsen <cl...@gmail.com> wrote:
> On Tue, Dec 6, 2011 at 11:57 PM, Castyn <er...@gmail.com> wrote:
> > Is there a way to do it simply through the spring DSL though?
> >
>
> Not from Camel itself. You would need to use a scripting language. Or
> create a java bean, that returns the date, and then use the
> bean/method call expression from the Spring DSL.
>
> > I guess I could create a custom processor that just passes on the headers
> > and body after adding a new header with this code in it, but that seems
> like
> > overkill for this situation.
> >
> > --
> > View this message in context:
> http://camel.465427.n5.nabble.com/Date-String-Creation-tp5052753p5053745.html
> > Sent from the Camel - Users mailing list archive at Nabble.com.
>
>
>
> --
> Claus Ibsen
> -----------------
> FuseSource
> Email: cibsen@fusesource.com
> Web: http://fusesource.com
> Twitter: davsclaus, fusenews
> Blog: http://davsclaus.blogspot.com/
> Author of Camel in Action: http://www.manning.com/ibsen/
>
--
-------------------------------------------
Craig Taylor
ctalkobt@ctalkobt.net
Re: Date String Creation
Posted by Claus Ibsen <cl...@gmail.com>.
On Tue, Dec 6, 2011 at 11:57 PM, Castyn <er...@gmail.com> wrote:
> Is there a way to do it simply through the spring DSL though?
>
Not from Camel itself. You would need to use a scripting language. Or
create a java bean, that returns the date, and then use the
bean/method call expression from the Spring DSL.
> I guess I could create a custom processor that just passes on the headers
> and body after adding a new header with this code in it, but that seems like
> overkill for this situation.
>
> --
> View this message in context: http://camel.465427.n5.nabble.com/Date-String-Creation-tp5052753p5053745.html
> Sent from the Camel - Users mailing list archive at Nabble.com.
--
Claus Ibsen
-----------------
FuseSource
Email: cibsen@fusesource.com
Web: http://fusesource.com
Twitter: davsclaus, fusenews
Blog: http://davsclaus.blogspot.com/
Author of Camel in Action: http://www.manning.com/ibsen/
Re: Date String Creation
Posted by Castyn <er...@gmail.com>.
Is there a way to do it simply through the spring DSL though?
I guess I could create a custom processor that just passes on the headers
and body after adding a new header with this code in it, but that seems like
overkill for this situation.
--
View this message in context: http://camel.465427.n5.nabble.com/Date-String-Creation-tp5052753p5053745.html
Sent from the Camel - Users mailing list archive at Nabble.com.
Re: Date String Creation
Posted by Donald Whytock <dw...@gmail.com>.
Using basic Java, the best I can come up with offhand is
String outdate = new
SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ").format(new
Date(System.currentTimeMillis() - 3600000), new StringBuffer(), new
FieldPosition(0)).toString();
I assume there's simpler.
Don
On Tue, Dec 6, 2011 at 12:07 PM, Castyn <er...@gmail.com> wrote:
> I am curious what the best way is to create a date string that supports
> xsl:date format?
>
> For instance if I wanted to create a date string for an hour ago in the
> format yyyy-MM-ddThh:mm:ss-offset what would the best way to go about it be?
> I know there are some simple commands such as ${date:now:...}, or that it
> could possible be done through a javascript function that just outputs the
> string, but I am curious if there is a better way or how to implement the
> simple statement.
>
> --
> View this message in context: http://camel.465427.n5.nabble.com/Date-String-Creation-tp5052753p5052753.html
> Sent from the Camel - Users mailing list archive at Nabble.com.