Download Apache Axis2 Web Services by Deepal Jayasinghe PDF

By Deepal Jayasinghe

It is a step-by-step useful advisor for constructing internet companies utilizing Apache Axis2. there are many real-life examples, which makes this e-book a great sensible consultant. This e-book is for Java builders who're attracted to development internet providers utilizing Apache Axis2. Familiarity with net criteria like cleaning soap, WSDL and XML parsing is thought.

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However, if something goes wrong, you would be required to know that too. So this API invokes a service where it does not have a return value but would throw an exception. • fireAndForget: This API is for just sending an XML request and not caring about neither the response, nor the exception. Hence, this is useful in invoking an In-Only MEP. • sendReceive: This invokes a service that has a return value. This is one of the most commonly used APIs. Hence, this is used for invoking an In-Out MEP.

Session management and Service lifecycle management are two core features of the information model. • Deployment model: The deployment model allows the user to easily deploy the services, configure the transports, and extend the SOAP processing model. It also introduces newer deployment mechanisms in order to handle hot deployment, hot updates, and J2EE-style deployment. • Client API: This provides a convenient API for users to interact with the web services using Axis2. The API consists of two sub-APIs, for average users and for advanced users.

Push-based approaches are easy to use; however, when it comes to applications that are dominated by XML processing, efficient mechanisms are needed. For example, push-based parsing require populating everything in the memory, but applications such as Enterprise Service Bus (ESB) only require to process a single part of the message and forward that to the appropriate target. [ 42 ] Chapter 3 With pull parsing, the user has full control over the parser. The user can ask for the next event process and for the next event.

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