.NET/ASP.NET/C#/VB.NET PDF Document SDK

Finally, let me add that we can do C++-style inheritance in our model; we just don t call it inheritance (or subtyping). In fact we don t explicitly call it anything at all, but what I have in mind is akin to what I believe some people call delegation. Appendix G of the book already mentioned Databases, Types, and the Relational Model: The Third Manifesto, 3rd edition (Addison-Wesley, 2006) discusses this issue in some detail.

Result: Returned object. Null if error. Error: Returned error object. Null of no error. Id: Same as the request identifier.

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Now, use the Normal tool to move the circle object to the place you want it to be at that point in time. If you then click in between those timeline points, your object moves to a space between the start position and the place where you just moved the circle (see Figure 5-20).

To communicate between a Flex application and a Java server using JSON-RPC, you would need to create JSON-RPC-related gateways/endpoints, serializers, and parsers at both ends.

first published my paper on circles and ellipses ( 23 in the present book) in July 2001. Then I ducked ... Perhaps it s an exaggeration to say that people threw things at me from all directions, but (as noted in that previous chapter) I certainly received an unusually large amount of correspondence, most of it unfavorable. It isn t my intention to give a blow-by-blow response here to all of the criticisms I received, but I do want to respond to one particular claim that ran like a common thread through many of them: namely, that I seemed not to be aware of the Liskov Substitution Principle or (worse!) if I was aware of it, then I didn t understand it. Well, I freely admit that I wasn t familiar with the term Liskov Substitution Principle (hereinafter abbreviated to LSP) when I wrote my original paper. However, I was certainly familiar I venture to say, extremely familiar with the concept, which I had been taught to call substitutability.1 Here s a loose definition (I ll refine this definition at the very end of this chapter): If S is a subtype of T, then wherever the system expects a value of type T, a value of type S can be substituted.

It s not difficult to set up a Java JSON-RPC server and you can fairly easily set up jabsorb (http://jabsorb.org/), a JSON-RPC implementation for Java, with a web application to act as a JSONRPC server. We won t include the details of the server setup here, but it is reasonably simple and involves inclusion of jabsorb libraries, a servlet configuration, and registration with web.xml. Assuming the JSON-RPC endpoint is accessible at http://localhost:8080/jsonrpc, you create a Flex application to consume it. Once again, use the as3-rpclib to create the Flex client. The steps to set that up in a Flex project are identical to those in the section Understanding the Potential of XML-RPC. Finally, code the application as follows:

Figure 5-20. Without needing any manual intervention, Synfig Studio tweens the animation. At six frames into the action, the bouncing ball is drawn at a point midway between the top and bottom of the canvas. When you re happy with the way your timeline is shaping up, click the chevron button in the upperleft corner of the canvas window, and select File Preview. This action opens a dialog in which you can select the zoom factor and frame rate of animation playback. The reason for this is that shrinking the preview or dropping the frame rate means the animation can be rendered more quickly (see Figure 521). This may be an advantage when the drawing gets complex and the number of frames starts to mount up. You can also specify one part of the animation to preview, using frame or second values in the Begin Time and End Time fields of this dialog.