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Posted to user@jmeter.apache.org by "Layton, Andrew" <an...@atosorigin.com> on 2006/06/22 11:26:38 UTC
How to convert JMeter User Defined Variable between strings and
integers?
I have reached the stage of including a Beanshell sampler and successfully accessing UDV variables.
Beanshell can put integers and / or strings into response message for a regex extractor to take them out again - I am able to get the time in millisec as a string.
The Question: how to get a string number from a User Variable and convert to integer, say just to increment numerically?
I guess that this could be done using a local int variable or Integer object, but how?
My upbringing is C and I cannot claim Java knowledge; however most of my Beanshell code works as expected and required, i.e I can do string _or_ integer operations on local variables OK, and vars.get( ) and vars.put ( ) work too.
According to Java docs I have read, a variable of class Integer should be creatable with a string as its argument -
but this won't work - causes an error.
Attempting valueOf ( ) or parseInt ( ) from Java doc also cause an error.
Trying the methods allegedly allowed by Java on a class String cause errors in Beanshell Sampler execution
(error messages are coarse-grained and unhelpful:
HTTP response code 500 and response message: "org.apache.jorphan.util.JMeterException: Error invoking bsh method eval"
//
I found info on StringBuffer in a Java book - this looks tantalising again but I still can't see how to use it without error or a void value
I have included more notes and comments below.
Help please !
// sprintf ( "what %d", a ) ; // this causes an error with valid int a ; fair enough it's C code
// print (a ) ; // no error but dunno where the result goes to
//
//
// Integer rc ("234" ) ; // as shown in Javadoc: causes an error
// Integer rc = "999" ; // Fails - unsurprising
// rc = parseInt ("324" ) ; // error
Integer rc ; // // Works OK ! rc is an Integer which is happy with an int. - see later
String argh = "234" ; // this line works OK
// rc = valueOf ( argh ); // error
// rc = argh.valueOf ( ) ; // error
rc = 999 ; // can assign value to an Integer
String foo = "Foo" ; // OK
foo = foo + rc.toString ( ) ; // CAN convert Integer to string - foo gets concatenation as expected
//CAN access variables as strings and copy to local String variable - this one is "88" as set earlier in script
String bar = vars.get("Siebel_Count") ;
// rc = bar ; // can't just assign integer to string //
// rc = bar.toInteger ( ) ;// Fails
// rc = Integer (bar ) ; // Fails
// StringBuffer SB ; // no error but what use is this?
StringBuffer SB ( bar ) ; // no error but SB is void when concatenated into ResponseMessage as below
// SB = "bar" ; // error
// Some working code - integer arithmetic
int result ;
int a = 4 ;
result = (a+3) * 6 ; // CAN do arithmetic on these int variables
rc = rc + result ; // OK to add int to Integer //
// foo = toString (result ) ; // Error
ResponseMessage = "output = " + foo + " " + result + " " + (rc+3) + "SB = " + SB ; // OK with integers or strings: concatenates not adds!
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RE: How to convert JMeter User Defined Variable between strings and integers?
Posted by "Layton, Andrew" <an...@atosorigin.com>.
Thanks for this: the function does indeed add an integer to a variable
despite the latter appearing to be a string otherwise.
I embedded this in a Sampler:
${__intSum(${var_1},4,var_1)} // adds 4 to var_1 as expected.
Regards
Andrew Layton
-----Original Message-----
From: sebb [mailto:sebbaz@gmail.com]
Sent: 22 June 2006 10:43
To: JMeter Users List
Subject: Re: How to convert JMeter User Defined Variable between strings
and integers?
Note that there is a JMeter function for adding numbers:
http://jakarta.apache.org/jmeter/usermanual/functions.html#__intSum
Also, there are various Counters you can use.
Maybe you don't need BeanShell.
S.
On 22/06/06, Layton, Andrew <an...@atosorigin.com> wrote:
> I have reached the stage of including a Beanshell sampler and
successfully accessing UDV variables.
> Beanshell can put integers and / or strings into response message for
a regex extractor to take them out again - I am able to get the time in
millisec as a string.
> The Question: how to get a string number from a User Variable and
convert to integer, say just to increment numerically?
> I guess that this could be done using a local int variable or Integer
object, but how?
> My upbringing is C and I cannot claim Java knowledge; however most of
my Beanshell code works as expected and required, i.e I can do string
_or_ integer operations on local variables OK, and vars.get( ) and
vars.put ( ) work too.
> According to Java docs I have read, a variable of class Integer should
> be creatable with a string as its argument - but this won't work -
causes an error.
> Attempting valueOf ( ) or parseInt ( ) from Java doc also cause an
error.
> Trying the methods allegedly allowed by Java on a class String cause
errors in Beanshell Sampler execution
> (error messages are coarse-grained and unhelpful:
> HTTP response code 500 and response message:
"org.apache.jorphan.util.JMeterException: Error invoking bsh method
eval"
> //
> I found info on StringBuffer in a Java book - this looks tantalising
> again but I still can't see how to use it without error or a void
value I have included more notes and comments below.
> Help please !
> // sprintf ( "what %d", a ) ; // this causes an error with valid int a
> ; fair enough it's C code // print (a ) ; // no error but dunno where
> the result goes to // // // Integer rc ("234" ) ; // as shown in
> Javadoc: causes an error // Integer rc = "999" ; // Fails -
> unsurprising // rc = parseInt ("324" ) ; // error
> Integer rc ; // // Works OK ! rc is an Integer which is happy with an
int. - see later
> String argh = "234" ; // this line works OK // rc = valueOf ( argh
> ); // error // rc = argh.valueOf ( ) ; // error rc = 999 ; // can
> assign value to an Integer String foo = "Foo" ; // OK foo = foo +
> rc.toString ( ) ; // CAN convert Integer to string - foo gets
> concatenation as expected //CAN access variables as strings and copy
> to local String variable - this one is "88" as set earlier in script
> String bar = vars.get("Siebel_Count") ; // rc = bar ; // can't just
> assign integer to string // // rc = bar.toInteger ( ) ;// Fails
> // rc = Integer (bar ) ; // Fails
> // StringBuffer SB ; // no error but what use is this?
> StringBuffer SB ( bar ) ; // no error but SB is void when
> concatenated into ResponseMessage as below // SB = "bar" ; //
> error // Some working code - integer arithmetic int result ; int a =
> 4 ;
> result = (a+3) * 6 ; // CAN do arithmetic on these int variables
> rc = rc + result ; // OK to add int to Integer // // foo =
> toString (result ) ; // Error ResponseMessage = "output = " + foo +
> " " + result + " " + (rc+3) + "SB = " + SB ; // OK with integers or
strings: concatenates not adds!
>
>
>
> _______________________________________________________
>
> This e-mail and the documents attached are confidential and intended
> solely for the addressee; it may also be privileged. If you receive
> this e-mail in error, please notify the sender immediately and destroy
it.
> As its integrity cannot be secured on the Internet, the Atos Origin
> group liability cannot be triggered for the message content. Although
> the sender endeavours to maintain a computer virus-free network, the
> sender does not warrant that this transmission is virus-free and will
> not be liable for any damages resulting from any virus transmitted.
> _______________________________________________________
>
>
>
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> To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
>
>
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Re: How to convert JMeter User Defined Variable between strings and integers?
Posted by sebb <se...@gmail.com>.
Note that there is a JMeter function for adding numbers:
http://jakarta.apache.org/jmeter/usermanual/functions.html#__intSum
Also, there are various Counters you can use.
Maybe you don't need BeanShell.
S.
On 22/06/06, Layton, Andrew <an...@atosorigin.com> wrote:
> I have reached the stage of including a Beanshell sampler and successfully accessing UDV variables.
> Beanshell can put integers and / or strings into response message for a regex extractor to take them out again - I am able to get the time in millisec as a string.
> The Question: how to get a string number from a User Variable and convert to integer, say just to increment numerically?
> I guess that this could be done using a local int variable or Integer object, but how?
> My upbringing is C and I cannot claim Java knowledge; however most of my Beanshell code works as expected and required, i.e I can do string _or_ integer operations on local variables OK, and vars.get( ) and vars.put ( ) work too.
> According to Java docs I have read, a variable of class Integer should be creatable with a string as its argument -
> but this won't work - causes an error.
> Attempting valueOf ( ) or parseInt ( ) from Java doc also cause an error.
> Trying the methods allegedly allowed by Java on a class String cause errors in Beanshell Sampler execution
> (error messages are coarse-grained and unhelpful:
> HTTP response code 500 and response message: "org.apache.jorphan.util.JMeterException: Error invoking bsh method eval"
> //
> I found info on StringBuffer in a Java book - this looks tantalising again but I still can't see how to use it without error or a void value
> I have included more notes and comments below.
> Help please !
> // sprintf ( "what %d", a ) ; // this causes an error with valid int a ; fair enough it's C code
> // print (a ) ; // no error but dunno where the result goes to
> //
> //
> // Integer rc ("234" ) ; // as shown in Javadoc: causes an error
> // Integer rc = "999" ; // Fails - unsurprising
> // rc = parseInt ("324" ) ; // error
> Integer rc ; // // Works OK ! rc is an Integer which is happy with an int. - see later
> String argh = "234" ; // this line works OK
> // rc = valueOf ( argh ); // error
> // rc = argh.valueOf ( ) ; // error
> rc = 999 ; // can assign value to an Integer
> String foo = "Foo" ; // OK
> foo = foo + rc.toString ( ) ; // CAN convert Integer to string - foo gets concatenation as expected
> //CAN access variables as strings and copy to local String variable - this one is "88" as set earlier in script
> String bar = vars.get("Siebel_Count") ;
> // rc = bar ; // can't just assign integer to string //
> // rc = bar.toInteger ( ) ;// Fails
> // rc = Integer (bar ) ; // Fails
> // StringBuffer SB ; // no error but what use is this?
> StringBuffer SB ( bar ) ; // no error but SB is void when concatenated into ResponseMessage as below
> // SB = "bar" ; // error
> // Some working code - integer arithmetic
> int result ;
> int a = 4 ;
> result = (a+3) * 6 ; // CAN do arithmetic on these int variables
> rc = rc + result ; // OK to add int to Integer //
> // foo = toString (result ) ; // Error
> ResponseMessage = "output = " + foo + " " + result + " " + (rc+3) + "SB = " + SB ; // OK with integers or strings: concatenates not adds!
>
>
>
> _______________________________________________________
>
> This e-mail and the documents attached are confidential and intended
> solely for the addressee; it may also be privileged. If you receive this
> e-mail in error, please notify the sender immediately and destroy it.
> As its integrity cannot be secured on the Internet, the Atos Origin group
> liability cannot be triggered for the message content. Although the
> sender endeavours to maintain a computer virus-free network, the
> sender does not warrant that this transmission is virus-free and will
> not be liable for any damages resulting from any virus transmitted.
> _______________________________________________________
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
>
>
---------------------------------------------------------------------
To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
For additional commands, e-mail: jmeter-user-help@jakarta.apache.org