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| The Java method could not be found |
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Message
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| Rahul999 |
 Posted: Wed Feb 17, 2010 4:09 am Post subject: The Java method could not be found |
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Centurion
Joined: 14 Mar 2007
Posts: 134
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Hi All,
I am trying to call a Java Function from an ESQL procedure.
I am calling the function correctly but still getting the "Java Method not found" error, here is the code I am using to call the function.
| Quote: |
CREATE COMPUTE MODULE Java_Socket_Compute
DECLARE Host EXTERNAL CHARACTER 'localhost';
DECLARE Port EXTERNAL INTEGER 8888;
CREATE FUNCTION Main() RETURNS BOOLEAN
BEGIN
DECLARE reqStr CHAR CAST(ASBITSTREAM(InputRoot.XMLNSC.*[1] OPTIONS FolderBitStream) as CHARACTER CCSID 1208);
SET OutputRoot.BLOB.BLOB = InvokeSocket(Host, Port, reqStr);
RETURN TRUE;
END;
END MODULE;
CREATE FUNCTION InvokeSocket(IN host CHARACTER, IN port INT, IN req CHARACTER)
RETURNS BLOB
LANGUAGE JAVA
EXTERNAL NAME "com.xyz.abc.mw.Common.InvokeSocket"; |
And, I am creating a class with the name Common with the Method InvokeSocket inside it.
Please see some part of the class here -
package com.xyz.abc.mw;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.Socket;
import java.util.HashMap;
import java.util.Map;
public class Common
{
public static byte[] InvokeSocket(String host, int port, String Request)
byte[] a = null;
--------- some line of code -----------------
return a;
I dont see any problem here but still I am getting the below error
| Quote: |
RecoverableException
File:CHARACTER:F:\build\S610_P\src\DataFlowEngine\ImbRdl\ImbRdlRoutine.cpp
Line:INTEGER:1153
Function:CHARACTER:SqlRoutine::resolveExternalJavaParameters
Type:CHARACTER:ComIbmComputeNode
Name:CHARACTER:Java_Socket#FCMComposite_1_2
Label:CHARACTER:Java_Socket.Compute
Catalog:CHARACTER:BIPv610
Severity:INTEGER:3
Number:INTEGER:3202
Text:CHARACTER:An error occured whilst trying to locate a Java Class / method
Insert
Type:INTEGER:5
Text:CHARACTER:.InvokeSocket
Insert
Type:INTEGER:5
Text:CHARACTER:1.12
Insert
Type:INTEGER:5
Text:CHARACTER:com.xyz.abc.mw.Common.InvokeSocket
Insert
Type:INTEGER:5
Text:CHARACTER:InvokeSocket
RecoverableException
File:CHARACTER:F:\build\S610_P\src\DataFlowEngine\ImbRdl\ImbRdlExternalJava.cpp
Line:INTEGER:1102
Function:CHARACTER:ESQL2JavaMethodResolver::decodeReturnStatus
Type:CHARACTER:
Name:CHARACTER:
Label:CHARACTER:
Catalog:CHARACTER:BIPv610
Severity:INTEGER:3
Number:INTEGER:2946
Text:CHARACTER:The Java method could not be found
Insert
Type:INTEGER:5
Text:CHARACTER:com.xyz.abc.mw.Common.InvokeSocket |
I have referenced the Java class project from the message flow project. is there anything els(like classpath) I need to configure? I am not able to get any idea about this.
Any help would be highly appreciated.
Regards,
_________________
"For all your days be prepared, and meet them ever alike.
When you are the anvil, bear - when you are the hammer, strike."
- Edwin Markham |
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| WMBDEV1 |
| Posted: Wed Feb 17, 2010 5:06 am Post subject: |
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Sentinel
Joined: 05 Mar 2009
Posts: 888
Location: UK
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Have you tried changing the type of the port variable in the java code to be a Long object rather than the int primitive?
That should help. |
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| WMBDEV1 |
| Posted: Wed Feb 17, 2010 5:09 am Post subject: |
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Sentinel
Joined: 05 Mar 2009
Posts: 888
Location: UK
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As an aside, and without knowing exactly what you are doing, would it be worth considering using the TCP nodes that come with broker rather than rolling your own?
Just a thought. |
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| Rahul999 |
| Posted: Thu Feb 18, 2010 12:02 am Post subject: |
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Centurion
Joined: 14 Mar 2007
Posts: 134
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Hi WmbDEV1,
.
| Quote: |
Have you tried changing the type of the port variable in the java code to be a Long object rather than the int primitive?
That should help.
|
actually i did that hit and trial of passing the port variable as Long before your replied  and it worked
but the credit goes to you only to give the solution for this issue 
Thanks
_________________
"For all your days be prepared, and meet them ever alike.
When you are the anvil, bear - when you are the hammer, strike."
- Edwin Markham |
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| SANTYP |
| Posted: Thu Aug 26, 2010 8:15 pm Post subject: |
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Centurion
Joined: 27 Mar 2007
Posts: 142
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| Rahul999 wrote: |
Hi WmbDEV1,
.
| Quote: |
Have you tried changing the type of the port variable in the java code to be a Long object rather than the int primitive?
That should help.
|
"An error occured whilst trying to locate a Java Class / method"
actually i did that hit and trial of passing the port variable as Long before your replied and it worked
but the credit goes to you only to give the solution for this issue
Thanks |
Hi Guys,
I am also faced simliar problem..
I tried to change the INT to LONG but not clue from the prog..
Still getting the below error..
can any one help me out in this regard...
Plzzzz.... |
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| Kishore p |
| Posted: Thu Jun 30, 2016 7:02 am Post subject: |
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Newbie
Joined: 23 Mar 2016
Posts: 5
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Hi guys,
I too facing same problem , Please help me to solve this issue
Thanks in advance |
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