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Service-oriented applications send and receive messages to SOAP endpoints. In WCF, the Port object defines two things: 1. Service layer information, including the operations that the service supports 2. The supported transport mechanisms and wire formats (e.g., SOAP 1.2 encoding over HTTP) We want to emphasize the tie-in between WCF technology and today s technology. The WCF Port object is equivalent to a WS-Addressing construct called the endpoint reference. In 8 we discuss endpoint references, which are equivalent to the <service> element in the WSDL document and provide both addressing and binding information for a Web service. Listing 9-6 provides an excerpt from the StockTrader WSDL document showing how the <service> and associated <binding> tags work together to document the location of a service, and the operations that it provides.

Figure 2-20. The site s settings.php file must be set back to 644 after install. Congratulations, your Drupal installation is complete (see Figure 2-21).

You can now continue to your new site. If you do not follow any of the preceding steps or your host does not meet minimum Drupal requirements, an error message will appear at the top of the admin section (see Figure 2-22). Click the Configuration link in the administrative toolbar to see whether you have an error message. Click the status report link to view all errors.

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4 demonstrated how to build a simple autocomplete feature in which a drop-down list would appear with a list of suggestions each time the user typed into a text box, la Google Suggest. The search component of the Ajax Dashboard builds on this example. Unlike the example from 4, which used hard-coded search results, this example uses the Yahoo! Search API to perform the search. The Ajax Dashboard also uses the Taconite framework to build the search results. Listing 8-13 is an excerpt from the autoComplete.html example from 4. The function shown in Listing 8-13 is the function responsible for building the results drop-down list. Listing 8-13. Excerpt of autoComplete.html Example from 4 function setNames(the_names) { clearNames(); var size = the_names.length; setOffsets(); var row, cell, txtNode; for (var i = 0; i < size; i++) { var nextNode = the_names[i].firstChild.data; row = document.createElement("tr"); cell = document.createElement("td"); cell.onmouseout = function() {this.className='mouseOver';}; cell.onmouseover = function() {this.className='mouseOut';}; cell.setAttribute("bgcolor", "#FFFAFA"); cell.setAttribute("border", "0"); cell.onclick = function() { populateName(this); } ; txtNode = document.createTextNode(nextNode); cell.appendChild(txtNode); row.appendChild(cell); nameTableBody.appendChild(row); } }

CHAPTER 9 BEYOND WSE 3.0: LOOKING AHEAD TO WINDOWS COMMUNICATION FOUNDATION (WCF)

Figure 2-22. After installing Drupal and continuing to the site, an error message will appear if any problems are detected.

Listing 9-6. Excerpt from the StockTrader Web Service WSDL File Showing the <service> and <binding> Definitions <service name="StockTraderService"> <port name="StockTraderServiceSoap" binding="tns:StockTraderServiceSoap"> <soap:address location="http://localhost/StockTrader/StockTrader.asmx" /> </port> </service> <binding name="StockTraderServiceSoap" type="tns:StockTraderServiceSoap"> <soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document" /> <operation name="RequestAllTradesSummary"> <soap:operation soapAction="http://www.bluestonepartners.com/schemas/StockTrader/ RequestAllTradesSummary" style="document" /> <input> <soap:body use="literal" /> </input> <output> <soap:body use="literal" /> </output> </operation> <!- Additional operations are not shown -> <operation /> </binding> The WS-Addressing specification takes this concept one step further by encapsulating addressing, binding, and security policy information within a single reference, as shown in Listing 9-7. Listing 9-7. Endpoint Reference XML <wsa:EndpointReference> <wsa:Address>soap.tcp://stocktrader.com/StockTrader</wsa:Address> <wsa:ReferenceProperties> <st:AccountID>123A</st:AccountID> </wsa:ReferenceProperties> <wsa:PortType>st:StockTraderSoap</wsa:PortType> <wsp:Policy/> </wsa:EndpointReference> You can clearly see how the WCF Port object maps to familiar constructs such as endpoint references and the WSDL <service> and <binding> definitions. The WCF Port object is tied into an extended processing pipeline that supports common message-processing features, including security, policy, routing, and transactions. When you write a service method, you need to add attributes for each of the specifications that you want to implement; for example, you can specify authorization access for a specific user or role.

The set_names function is responsible for reading the XML returned by the server and building the results The JavaScript in the set_names function isn t particularly hard; it s just tedious and an unnatural way to write HTML content Remember, though, that building the onmouseover, onmouseout, and onclick event handlers required nonstandard code; otherwise, it wouldn t work in all major browsers Had you not known the workaround, you may not have figured out why the example worked in some browsers but not others Now, compare the code in Listing 8-13 with the code in Listing 8-14, which shows searchAutocompletejsp Listing 8-14 demonstrates how you build the content of the results drop-down list using the Taconite framework Listing 8-14 searchAutocompletejsp <%@ taglib uri="http://javasuncom/jsp/jstl/core" prefix="c"%> <%@ taglib uri="http://taconitesfnet/tags" prefix="tac" %> <tac:taconiteRoot> <tac:replaceChildren contextNodeID="popup" parseOnServer="true"> <c:forEach var="result" items="${results}"> <div onmouseover="hilite(this);" onmouseout="unhilite(this);"> <a href="${result.

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