Solved

Datasource routing using AbstractRoutingDataSource with JNDI

Posted on 2009-05-17
4
2,977 Views
Last Modified: 2015-01-05
Hi,
I am required to do datasource routing using AbstractRoutingDataSource.java in my web application. We are using JNDI for datasource mapping. Here's the code:

----------------------DynamicDatasourceRouter.java--------------------
package com.walmart.eai.util;
import java.sql.SQLException;
import java.sql.Wrapper;
import javax.sql.DataSource;
import org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource;

public class DynamicDatasourceRouter extends AbstractRoutingDataSource{
            
    @Override
    protected Object determineCurrentLookupKey()
    {
       return EnvironmentContextHolder.getEnvironmentType();
          
    }
   
}


--------------------------------EnvironmentContextHolder.java-------------------------------------------
package com.walmart.eai.util;

public class EnvironmentContextHolder {
      

      private static final ThreadLocal<EnvironmentType> contextHolder = new ThreadLocal<EnvironmentType>();

      public static void setEnvironmentType(EnvironmentType environmentType){
      if (environmentType == null) System.out.println("EnvironmentType cannot be null");
      contextHolder.set(environmentType);
      }

      public static EnvironmentType getEnvironmentType(){
      return (EnvironmentType) contextHolder.get();
      }

      public static void clearEnvironmentType(){
      contextHolder.remove();
      }

}

---------------------------------------EnvironmentType.java------------------------
package com.walmart.eai.util;

public enum EnvironmentType {
      C1,
      C2,
      }

------------------------------------applicationContext.xml------------------
<bean id="eaiDataSource" class="com.walmart.eai.util.DynamicDatasourceRouter">
            <property name="targetDataSources">
             <map key-type="com.walmart.eai.util.EnvironmentType">
            <entry key="C1" value="JNDI1" />
                        <entry key="C2" value="JNDI2" />
                        
                  </map>
            </property>
            <property name="defaultTargetDataSource" value="JNDI1" />
            
      </bean>

---------------------------------------------------------------------------------------------
I am setting the value of the EnvironmentType of the EnvironmentContextHolder just before querying the DB as follows:
EnvironmentContextHolder.setEnvironmentType(EnvironmentType.C2);

-----------------------------------------------------------------------------------------------
But this not working. Where am I going wrong?
0
Comment
Question by:cuttieveenz
  • 2
4 Comments
 

Author Comment

by:cuttieveenz
ID: 24405774
After debugging I found that the above code is working fine. The JNDI is getting correctly mapped to the datasource. The datasource object is of type com.ibm.ws.rsadapter.jdbc.wsjdbcdatasource. But when the getConnection() is called it's giving error from Database side.

IO Exception opening socket to server USMUMVSALVI2 on port 50000.  The DB2 Server may be down.
0
 
LVL 92

Accepted Solution

by:
objects earned 500 total points
ID: 24405797
is the database listeniig on that port?

0
 

Author Comment

by:cuttieveenz
ID: 24405821
Hmmm,....I think u r right....When I tried to do 'Test Connection' on this datasource through the webphere administrative console, it gave me the same error. Then this shouldn't be the web application problem.
0

Featured Post

3 Use Cases for Connected Systems

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, testing some more, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

INTRODUCTION Working with files is a moderately common task in Java.  For most projects hard coding the file names, using parameters in configuration files, or using command-line arguments is sufficient.   However, when your application has vi…
Introduction This article is the last of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers our test design approach and then goes through a simple test case example, how …
The viewer will learn how to implement Singleton Design Pattern in Java.
This theoretical tutorial explains exceptions, reasons for exceptions, different categories of exception and exception hierarchy.

803 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question