Download Apache Axis2 Web Services by Deepal Jayasinghe PDF

By Deepal Jayasinghe

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

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Xml (global configuration file). In addition to that, if we want to engage a module at runtime, we can do that in many ways, such as by using Axis2 web admin, handlers, and so on. [ 38 ] Download from Wow! com> Chapter 2 Custom deployers We can deploy a service in many ways. One could deploy a service as an archive file (Axis2 default) by creating a service using a database or by creating a web service using a text file. The idea of custom deployers is to open avenues for supporting any kind of deployment mechanisms.

These two hierarchies create a model that provides the ability to search for the key-value pairs. When the values are to be searched at a given level, they are done while moving up the hierarchy until a match is found. In the resulting model, the lower levels override the values present in the upper levels. For example, when a value has been searched in the message context and is not found, then it would be searched in the operation context, and so on. The search is first done up the hierarchy, and if the starting point is a context, it would search in the description hierarchy as well.

As far as the history of web services is concerned, several generations are clearly visible. The first generation web services were highly controlled interactions and can be considered as mere tests of feasibility. Apache SOAP was one of the notable SOAP engine in the first generation, and that was mainly meant to be "proof of concept" and not at all that concerned about performance. Apache SOAP was initially developed at IBM and later they donated it to Apache and started the Web Service project in Apache.

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