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Category Archives: How to
Using Annotations with OSGi Declarative Services
Introduction The OSGi compendium specification has now standardized the annotation usage for declarative services. The core services bundle (org.eclipse.osgi.services) includes the set of classes and packages that can be used for this purpose. The specification clearly mentions that there should … Continue reading
Posted in How to, Java, OSGi
Tagged annotations, component, declarative, felix, OSGi, scr, services
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Transaction support with RabbitMQ
In a previous post of mine, I explained about the new AMQP transport developed for WSO2 ESB based on RabbitMQ Java Client. In this post I will be explaining about how we use the transactions support in RabbitMQ Java Client … Continue reading
Posted in How to, Java, RabbitMQ, WSO2
Tagged amqp, rabbitmq, transactions, transport, wso2esb
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Access Cabon Data Sources within webapps in WSO2 Application Server
In a previous post of mine, I explained on how we can register JNDI Resources within webapp that are hosted in WSO2 Application Server. In this post I will be explaining about How we can access Carbon Data Sources, using … Continue reading
WSO2 ESB : How to fix “Failed to start new registry transaction” error.
When configuring WSO2 ESB with its embedded registry pointing to an Oracle RAC instance, sometimes you may run into connection issues with the RAC instance, with the following error trace. ERROR {org.wso2.carbon.registry.core.dataaccess.TransactionManager} – Failed to start new registry transaction. {org.wso2.carbon.registry.core.dataaccess.TransactionManager} … Continue reading
How to register JNDI resources for webapps in WSO2 Application Server
WSO2 Application Server uses Embedded Tomcat as its underlying servlet container. This gives the advantage of inheriting all the features supported by Apache Tomcat. With this support WSO2 Application Server brings together the webapp hosting facility along with web-services hosting … Continue reading
Useful maven commands
Project Build Clean a project: mvn clean Compile a project: mvn compile Run unit tests (it also compiles a project): mvn test Build a package (it also executes unit tests): mvn package Run integration test (it also builds a package): mvn verify Install a package … Continue reading
Axis2 clustering with tomcat
I was recently working with the creating axis2 cluster by using tomcat. Instead of running axis as two different webapps in one tomcat instance, I used two different tomcat instances to create the cluster. But i faced a problem which is already … Continue reading
How to deploy multiple spring service axis2 archive (AAR) within a single Axis2 instance
Introduction Axis2 has support for deploying spring beans as web services. First we have to define the spring bean class and then write the webservice class based on the bean class. Axis2 documentation on this [1] explains on how to … Continue reading
Posted in Axis2, How to, Java, Software, Spring
Tagged aar, apache, appContext, applicationContext.xml, archive, axis2, bean, context, definitions, deploy, instance, multiple, multiple service, pojo, service, single, Spring, spring bean, spring service, webservices
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