.NET/Java PDF, Tiff, Barcode SDK Library

The only thing that you need to update is the contents of the div element that houses the list of news stories That s where the newsItemsAjaxjsp file comes in The newsItemsAjaxjsp file is the JSP that is used when the browser submits an Ajax request asking for the news items to be updated This file is interested only in updating the news items instead of redrawing the entire news items component Like the weather forecast example, it will use the Taconite framework, but this time it will avoid using Taconite s JSP tag library in order to demonstrate how the Taconite framework can be used with any server-side technology Listing 8-11 shows the newsItemsAjaxjsp file Since this example does not use any of Taconite s custom JSP tags, you must manually set the Content-Type header of the response to text/xml.

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Note the similarities to Listing 8-8, which is the actual XML generated by Taconite s JSP tag library Listing 8-11 newsItemsAjaxjsp <%@page contentType="text/xml"%> <taconite-root> <taconite-replace-children contextNodeID="newsItemsContent" parseInBrowser="true"> <%@include file="newsItemsDetailjsp"%> </taconite-replace-children> 3565005953993bd3170c41194f12907b </taconite-root>.

CHAPTER 2 I HOW TO OBTAIN, INSTALL, AND USE F#

Braitenberg, Valentino. Vehicles: Experiments in Synthetic Psychology. Cambridge, MA: The MIT Press, 1986. Braitenberg Vehicles: http://people.cs.uchicago.edu/~wiseman/vehicles/ Cadmium sulfide photoresistors: http://www.selcoproducts.com/CFM/photocell_toc.cfm GE Infrastructure Sensing: http://www.thermometrics.com/

Instead of using the tac:taconiteRoot and tac:replaceChildren JSP tags, this example simply writes the XML tags itself, without relying on Taconite s custom JSP tag library to do it. Note how just like the tac:replaceChildren JSP tag, the taconite-replace-children tag has a contextNodeID attribute that specifies the existing element on the page that will have its contents replaced with the specified content. The parseInBrowser attribute with a value of true indicates to the Taconite JavaScript client that the HTML content must first be parsed into JavaScript commands before the commands can be executed. Nested within the taconite-replace-children tag is a JSP include for the newsItemsDetail.jsp file. As you saw previously, this file performs the actual generation of the HTML content that renders the news items links. The XML rendered by newsItemsAjax.jsp is returned to the browser as the response to the Ajax request. The Taconite client reads the response and notices that the taconite-replace-children tag s parseInBrowser attribute is set to true. Thus, the Taconite client knows that the taconite-replace-children tag does not contain JavaScript that s ready to be executed. Instead, its content is HTML that first needs to be parsed into JavaScript. The taconite-parser.js file contains the JavaScript code that parses the HTML into the equivalent JavaScript commands.

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Figure 3-21. Cut cable method step 5: all wires are screwed in the terminal block 5. Now you can connect any type of wire you need (see Figure 3-22) to extend the cable or connect it to a homebrew sensor. You should use solid wire to connect the cable to a solderless breadboard for projects described in later chapters. Appendix A describes the details for this construction method.

http://www.mertner.com/confluence/display/ NProf/Home http://www.microsoft.com/downloads/details. aspx familyid=a362781c-3870-43be-8926862b40aa0cd0&displaylang=en http://www.aisto.com/roeder/dotnet/

The weather forecast, stock quote, and headline news components on the Ajax Dashboard automatically refresh themselves at predefined intervals. The weather forecast and stock quote components also update themselves each time the user edits their properties. You may be asking yourself how this automatic updating is implemented. To make the automatic updating work, you need some sort of timer that will execute a specified JavaScript function at set intervals. Fortunately, such a timer is built right into the window object. While not specified by any official standard, the window.setInterval method is supported by all the modern browsers. The window.setInterval method takes two arguments. The first argument is a string indicating the JavaScript function that should be called at set intervals. The second argument is an integer indicating the number of milliseconds that should pass between calls to the specified function. The window.setInterval method returns an integer representing the unique ID assigned to the interval. You can use this unique ID as the argument to the window.clearInterval method, which is used to stop an interval from being evaluated. Listing 8-12 shows the stockQuote.js file that handles all the user inputs and manages the automatic updating for the stock quote component. Listing 8-12. stockQuote.js var stockTickerUpdateIntervalID = 0; function handleStockTickersChange() { clearStockTickerUpdateInterval(); } function clearStockTickerUpdateInterval() { if(stockTickerUpdateIntervalID != 0) { window.clearInterval(stockTickerUpdateIntervalID); }

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This is a simplified version to be used for building sensors that need only a few of the pins. For example, only pins 1 and 2 (white and black wires) are used for sensors in s 4 through 7. You can use a three-contact screw terminal to get a spare connection point, as illustrated in Figure 3-23.