- Easy Web Development with WaveMaker
- Edward Callahan
- 470字
- 2021-08-13 16:20:34
The big picture
A very short description of a WaveMaker application could be: a Spring MVC server running in a Java container, such as Tomcat, serving file and JSON requests for a Dojo Toolkit-based JavaScript browser client. Unfortunately, such "elevator" descriptions can create more questions than they answer.
For starters, although we will often refer to it as "the server," the WaveMaker server might be more aptly called an application server in most architectures. Sure, it is possible to have a useful application without additional servers or services beyond the WaveMaker server, but this is not typical. We could have a rich user interface to read against some in memory data set, for example. Far more commonly, the Java services running in the WaveMaker server are calling off to other servers or services, such as relational databases and RESTful web services. This means the WaveMaker server is often the middle or application tier server of a multi-tier application's architecture.
Yet at the same time, the WaveMaker server can be eliminated completely. Applications can be packaged for uploading to PhoneGap build, http://build.phonegap.com/,directly from WaveMaker Studio. Both PhoneGap and the associated Apache project Cordova, http://cordova.apache.org,provide APIs to enable JavaScript to access native device functionality, such as capturing images with the camera and obtaining GPS location information. Packaged up and installed as a native application, the JavaScript files are loaded from the devices, file system instead of being downloaded from a server via HTTP. This means there is no origin domain to be constrained by. If the application only uses web services, or otherwise doesn't need additional services, such as database access, the WaveMaker server is neither used nor needed.
Just because an application isn't installed on a mobile device from an app store doesn't mean we can't run it on a mobile device. Browsers on mobile devices are more capable than ever before. This means our client could be any device with a modern browser.
You must also consider licensing in light of the bigger picture. WaveMaker, WaveMaker Studio, and the applications create with the Studio are released under the Apache 2.0 license, http://www.apache.org/licenses/LICENSE-2.0. The WaveMaker project was first released by WaveMaker Software in 2007. In March 2011, VMware (http://vmware.com) acquired the WaveMaker project. It was under VMware that WaveMaker 6.5 was released. In April 2013, Pramati Technlogies (http://pramati.com) acquired the assets of WaveMaker for its CloudJee (http://cloudjee.com) platform. WaveMaker continues to be developed and released by Pramati Technologies.
Now that we understand where our client and server sit in the larger world, we will be primarily focused within and between those two parts. The overall picture of the client and server looks as shown in the following diagram:

We will examine each piece of this diagram in detail during the course of this book. We shall start with the JavaScript client.
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