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| kuladeep.dairy |
 Posted: Thu Nov 05, 2009 10:39 am Post subject: JAVA's evaluateXpath equivalent function in ESQL |
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Apprentice
Joined: 11 Jul 2009
Posts: 38
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| Can you please let me know if we have JAVA's evaluateXpath equivalent function in ESQL? |
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| kuladeep.dairy |
| Posted: Thu Nov 05, 2009 1:12 pm Post subject: Can you please let me know if we have JAVA's evaluateXpath e |
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Apprentice
Joined: 11 Jul 2009
Posts: 38
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| smdavies99 |
| Posted: Thu Nov 05, 2009 1:28 pm Post subject: |
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Jedi Council
Joined: 10 Feb 2003
Posts: 6076
Location: Somewhere over the Rainbow this side of Never-never land.
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A saying that was commonly used in a '70's TV series
Patience Grasshopper
If someone reading this forum knows an answer I'm sure they'll post it.
you could help yourself by telling us where you have looked for the answer
_________________
WMQ User since 1999
MQSI/WBI/WMB/'Thingy' User since 2002
Linux user since 1995
Every time you reinvent the wheel the more square it gets (anon). If in doubt think and investigate before you ask silly questions. |
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| kuladeep.dairy |
| Posted: Thu Nov 05, 2009 2:02 pm Post subject: you could help yourself by telling us where you have looked |
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Apprentice
Joined: 11 Jul 2009
Posts: 38
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Davis,
am sorry.
I checked in the infocenter. I do not see any equivalent function in ESQL. 6 months ago I developed a message flow usig ESQL. I had to write a ESQL function to evaluate XPATH. it breaks the XPATH ,say /A/B/C, into tokens A, B and C, and references them one by one to get the value.
that interface had to handle very simple xpaths like that.But now for my new interface, I am looking for a standard ESQL function to evaluate XPTAHs. |
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| rekarm01 |
| Posted: Thu Nov 05, 2009 2:44 pm Post subject: Re: JAVA's evaluateXpath equivalent function in ESQL |
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Grand Master
Joined: 25 Jun 2008
Posts: 1415
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ESQL does not support XPath directly, but the ESQL SELECT and THE functions can offer similar functionality.
Some of the properties for built-in nodes support XPath. Consult the Info Center for more details. |
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| mlafleur |
| Posted: Thu Nov 05, 2009 3:20 pm Post subject: |
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Acolyte
Joined: 19 Feb 2004
Posts: 73
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| You can call the Java method from your ESQL code. |
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| rekarm01 |
| Posted: Thu Nov 05, 2009 7:00 pm Post subject: Re: JAVA's evaluateXpath equivalent function in ESQL |
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Grand Master
Joined: 25 Jun 2008
Posts: 1415
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| mlafleur wrote: |
| You can call the Java method from your ESQL code. |
No. Message flows can only call static Java methods from ESQL. |
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| kuladeep.dairy |
| Posted: Thu Nov 05, 2009 9:04 pm Post subject: |
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Apprentice
Joined: 11 Jul 2009
Posts: 38
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Iwill have to handle about 100 XPATHs in my code. In that case i will have to call this static java function for 100 times. I dont know if it impacts the performance!
One basic question, i went thru JAVA 1.4.2(our Broker is running on this version of JAVA) API documentation to see if any class provides a function similar to evaluateXpath. I couldnt find any.
any insights on this would be helpful. Many thanks.
Last edited by kuladeep.dairy on Fri Nov 06, 2009 10:48 am; edited 1 time in total |
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| kimbert |
| Posted: Fri Nov 06, 2009 1:59 am Post subject: |
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Jedi Council
Joined: 29 Jul 2003
Posts: 5543
Location: Southampton
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I think your options are:
a) stay with ESQL, and learn to use the SELECT statement.
b) switch to Java, and use evaluateXPath |
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| mlafleur |
| Posted: Fri Nov 06, 2009 8:00 am Post subject: Re: JAVA's evaluateXpath equivalent function in ESQL |
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Acolyte
Joined: 19 Feb 2004
Posts: 73
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| rekarm01 wrote: |
| mlafleur wrote: |
| You can call the Java method from your ESQL code. |
No. Message flows can only call static Java methods from ESQL. |
So he can create a class with a static method with an MbElement argument (reference in ESQL). Then he can call the MbElement.evaluateXPath method in that static method. This is a possible solution for using the evaluateXPath functionality via ESQL. Or he could use some other XPath java library to return what he needs. |
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| kuladeep.dairy |
| Posted: Fri Nov 06, 2009 10:42 am Post subject: Can I use jplugin2.jar |
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Apprentice
Joined: 11 Jul 2009
Posts: 38
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Thank you for your response.
A sample XPATH that i will have to handle is as shown below. I was wondering how it is possible to use ESQL SELECT in this case.
boolean((/ABC/Policy/Pa/PersonalAutoNamedNonOwnerCov/PersonalAutoNamedNonOwnerCovLiabilityCoverage/CoverageOnPolicyIndicator = 10) and (/ABC/Policy/Pa/PersonalAutoNamedNonOwnerCov/PersonalAutoNamedNonOwnerCovLiabilityCoverage/CoverageType = 'SL'))
As suggested i am planning to use the jar below and write a static java method that can be invoked from ESQL. please let me know your insights.
C:\IBM\MessageBrokersToolkit\6.0\ibtoolkit\eclipse\plugins\com.ibm.etools.mft.jcn_6.0.2\jplugin2.jar
Last edited by kuladeep.dairy on Fri Nov 06, 2009 10:51 am; edited 1 time in total |
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| kuladeep.dairy |
| Posted: Fri Nov 06, 2009 10:50 am Post subject: |
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Apprentice
Joined: 11 Jul 2009
Posts: 38
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My java class is going to look like this:
import com.ibm.broker.plugin.MbElement;
public class Test {
public Test()
{
}
public static String ESQLEvaluateXpath(MbElement t, String xp)
{
}
} |
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| kuladeep.dairy |
| Posted: Fri Nov 06, 2009 2:19 pm Post subject: My java class is going to look like this |
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Apprentice
Joined: 11 Jul 2009
Posts: 38
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It is working. Thank you for your support.
Please let me know if there is any performance impact because of this kind of calls. |
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| rekarm01 |
| Posted: Sat Nov 07, 2009 1:42 pm Post subject: Re: My java class is going to look like this |
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Grand Master
Joined: 25 Jun 2008
Posts: 1415
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| kuladeep.dairy wrote: |
| Please let me know if there is any performance impact because of this kind of calls. |
Wouldn't you be in a better position to let us know if there is a performance impact? |
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| kuladeep.dairy |
| Posted: Mon Nov 09, 2009 12:18 pm Post subject: |
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Apprentice
Joined: 11 Jul 2009
Posts: 38
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| I tested.using this funcation i could make 2500 evaluateXPATH calls in about 800 milli seconds. The input XML message had about 5000 elements. |
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