200a40b332
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1640879 13f79535-47bb-0310-9956-ffa450edef68
320 lines
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HTML
320 lines
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<TD class="confluenceTd" valign="top" width="85%">
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<H3><A name="SCAJavaimplementation.xquery-%3Cimplementation.xquery%3E"></A><implementation.xquery></H3>
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<P>Tuscany provides an implementation type to support XQuery. With this extension, the business logic can be implemented by XQuery scripts. </P>
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<H3><A name="SCAJavaimplementation.xquery-TheXMLconfiguration"></A>The XML configuration</H3>
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<P><implementation.xquery> is declared under namespace "http://tuscany.apache.org/xmlns/sca/1.0". The location attribute specifies the XQuery script. It can be a file or resource name against the current classloader.</P>
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<DIV class="code panel" style="border-width: 1px;"><DIV class="codeContent panelContent">
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<PRE class="code-java">
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<component name=<SPAN class="code-quote">"QuoteJoinComponent"</SPAN> xmlns:tuscany=<SPAN class="code-quote">"http:<SPAN class="code-comment">//tuscany.apache.org/xmlns/sca/1.0"</SPAN>>
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</SPAN> <tuscany:implementation.xquery location=<SPAN class="code-quote">"META-INF/sca/quote_join.xq"</SPAN> />
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<reference name=<SPAN class="code-quote">"quoteCalculator"</SPAN> target=<SPAN class="code-quote">"QuoteCalculatorComponent"</SPAN> />
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</component>
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</PRE>
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</DIV></DIV>
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<H3><A name="SCAJavaimplementation.xquery-Someexamples"></A>Some examples</H3>
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<DIV class="code panel" style="border-width: 1px;"><DIV class="codeContent panelContent">
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<PRE class="code-java">
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<composite xmlns=<SPAN class="code-quote">"http:<SPAN class="code-comment">//www.osoa.org/xmlns/sca/1.0"</SPAN> targetNamespace=<SPAN class="code-quote">"http://quote.xquery/client"</SPAN>
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</SPAN> xmlns:tuscany=<SPAN class="code-quote">"http:<SPAN class="code-comment">//tuscany.apache.org/xmlns/sca/1.0"</SPAN> xmlns:xq=<SPAN class="code-quote">"http://quote.xquery/client"</SPAN>
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</SPAN> name=<SPAN class="code-quote">"xqueryquotewsclient"</SPAN>>
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...
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<component name=<SPAN class="code-quote">"QuoteJoinComponent"</SPAN>>
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<tuscany:implementation.xquery location=<SPAN class="code-quote">"META-INF/sca/quote_join.xq"</SPAN> />
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<reference name=<SPAN class="code-quote">"quoteCalculator"</SPAN> target=<SPAN class="code-quote">"QuoteCalculatorComponent"</SPAN> />
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</component>
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<component name=<SPAN class="code-quote">"QuoteJoinPropertiesComponent"</SPAN>>
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<tuscany:implementation.xquery location=<SPAN class="code-quote">"META-INF/sca/quote_join_properties.xq"</SPAN> />
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<!-- Reset the <SPAN class="code-keyword">default</SPAN> namespace as the sub-elements under pri:priceQuote are
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unqualified -->
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<property name=<SPAN class="code-quote">"priceQuoteDoc"</SPAN>>
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<pri:priceQuote xmlns:pri=<SPAN class="code-quote">"http:<SPAN class="code-comment">//www.example.org/price"</SPAN> xmlns="">
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</SPAN> <customerName>Acme Inc</customerName>
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<shipAddress street=<SPAN class="code-quote">"12 Springs Rd"</SPAN> city=<SPAN class="code-quote">"Morris Plains"</SPAN> state=<SPAN class="code-quote">"nj"</SPAN> zip=<SPAN class="code-quote">"07960"</SPAN> />
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<priceRequests>
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<priceRequest>
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<widgetId>12</widgetId>
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<price>1.0</price>
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</priceRequest>
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<priceRequest>
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<widgetId>134</widgetId>
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<price>34.1</price>
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</priceRequest>
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<priceRequest>
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<widgetId>211</widgetId>
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<price>10.0</price>
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</priceRequest>
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</priceRequests>
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</pri:priceQuote>
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</property>
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<!-- Reset the <SPAN class="code-keyword">default</SPAN> namespace as the sub-elements under ava:availQuote are
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unqualified -->
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<property name=<SPAN class="code-quote">"availQuoteDoc"</SPAN>>
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<ava:availQuote xmlns:ava=<SPAN class="code-quote">"http:<SPAN class="code-comment">//www.example.org/avail"</SPAN> xmlns="">
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</SPAN> <availRequest>
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<widgetId>12</widgetId>
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<requestedQuantity>10</requestedQuantity>
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<quantityAvail><SPAN class="code-keyword">true</SPAN></quantityAvail>
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<shipDate>2003-03-22</shipDate>
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</availRequest>
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<availRequest>
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<widgetId>134</widgetId>
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<requestedQuantity>345</requestedQuantity>
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<quantityAvail><SPAN class="code-keyword">false</SPAN></quantityAvail>
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<shipDate>BackOrder</shipDate>
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</availRequest>
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<availRequest>
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<widgetId>211</widgetId>
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<requestedQuantity>100</requestedQuantity>
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<quantityAvail><SPAN class="code-keyword">true</SPAN></quantityAvail>
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<shipDate>2003-04-21</shipDate>
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</availRequest>
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</ava:availQuote>
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</property>
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<property name=<SPAN class="code-quote">"taxRate"</SPAN>>0.1</property>
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<reference name=<SPAN class="code-quote">"quoteCalculator"</SPAN> target=<SPAN class="code-quote">"QuoteCalculatorComponent"</SPAN> />
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</component>
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<component name=<SPAN class="code-quote">"QuoteJoinExternalReferencesComponent"</SPAN>>
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<tuscany:implementation.xquery location=<SPAN class="code-quote">"META-INF/sca/quote_join_external_references.xq"</SPAN> />
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<reference name=<SPAN class="code-quote">"quoteCalculator"</SPAN> target=<SPAN class="code-quote">"QuoteCalculatorComponent"</SPAN> />
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<reference name=<SPAN class="code-quote">"priceQuoteProvider"</SPAN> target=<SPAN class="code-quote">"PriceQuoteProviderComponent"</SPAN> />
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</component>
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...
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</composite>
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</PRE>
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</DIV></DIV>
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<H4><A name="SCAJavaimplementation.xquery-DecalreSCAservices%2Freferences%2FpropertiesusingXQuerynamespaces"></A>Decalre SCA services/references/properties using XQuery namespaces</H4>
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<P>Please note you can use the following syntax in the XQuery script to declare SCA services, references, and properties.</P>
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<UL>
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<LI>scaservice:java/<java_interface_name></LI>
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<LI>scareference:java/<java_interface_name></LI>
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<LI>scaproperty:xml/<namespace>:<localName></LI>
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<LI>scaproperty:java/<java_class_name></LI>
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</UL>
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<DIV class="code panel" style="border-width: 1px;"><DIV class="codeContent panelContent">
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<PRE class="code-java">
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declare namespace quoteJoin=<SPAN class="code-quote">"scaservice:java/xquery.quote.PropertiesQuoteJoin"</SPAN>;
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declare namespace quoteCalculator=<SPAN class="code-quote">"scareference:java/xquery.quote.QuoteCalculator"</SPAN>;
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declare namespace priceQuoteDoc=<SPAN class="code-quote">"scaproperty:xml/http:<SPAN class="code-comment">//www.example.org/price:priceQuote"</SPAN>;
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</SPAN>declare namespace availQuoteDoc=<SPAN class="code-quote">"scaproperty:xml/http:<SPAN class="code-comment">//www.example.org/avail:availQuote"</SPAN>;
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</SPAN>declare namespace taxRate=<SPAN class="code-quote">"scaproperty:java/java.lang.<SPAN class="code-object">Float</SPAN>"</SPAN>;
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declare namespace pri=<SPAN class="code-quote">"http:<SPAN class="code-comment">//www.example.org/price"</SPAN>;
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</SPAN>declare namespace ava=<SPAN class="code-quote">"http:<SPAN class="code-comment">//www.example.org/avail"</SPAN>;
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</SPAN>declare namespace quo=<SPAN class="code-quote">"http:<SPAN class="code-comment">//www.example.org/quote"</SPAN>;
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</SPAN>
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declare variable $quoteCalculator external;
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declare variable $priceQuoteDoc external;
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declare variable $availQuoteDoc external;
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declare variable $taxRate external;
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declare function quoteJoin:joinPriceAndAvailQuotes() {
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<quo:quote>
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<quo:name>{ data($priceQuoteDoc/pri:priceQuote/customerName) }</quo:name>
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<quo:address>{ concat($priceQuoteDoc/pri:priceQuote/shipAddress/@street , <SPAN class="code-quote">","</SPAN>,
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$priceQuoteDoc/pri:priceQuote/shipAddress/@city ,<SPAN class="code-quote">","</SPAN>,
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fn:upper-<SPAN class="code-keyword">case</SPAN>($priceQuoteDoc/pri:priceQuote/shipAddress/@state) , <SPAN class="code-quote">","</SPAN>,
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$priceQuoteDoc/pri:priceQuote/shipAddress/@zip) }</quo:address>
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{
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<SPAN class="code-keyword">for</SPAN> $priceRequest in $priceQuoteDoc/pri:priceQuote/priceRequests/priceRequest,
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$availRequest in $availQuoteDoc/ava:availQuote/availRequest
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where data($priceRequest/widgetId) = data($availRequest/widgetId)
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<SPAN class="code-keyword">return</SPAN>
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<quo:quoteResponse>
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<quo:widgetId>{ data($priceRequest/widgetId) }</quo:widgetId>
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<quo:unitPrice>{ data($priceRequest/price) }</quo:unitPrice>
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<quo:requestedQuantity>{ data($availRequest/requestedQuantity) }</quo:requestedQuantity>
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<quo:fillOrder>{ data($availRequest/quantityAvail) }</quo:fillOrder>
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{
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<SPAN class="code-keyword">for</SPAN> $shipDate in $availRequest/shipDate
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<SPAN class="code-keyword">return</SPAN>
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<quo:shipDate>{ data($shipDate) }</quo:shipDate>
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}
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<quo:taxRate>{ $taxRate }</quo:taxRate>
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<quo:totalCost>{ quoteCalculator:calculateTotalPrice(
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$quoteCalculator,
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$taxRate,
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$availRequest/requestedQuantity,
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$priceRequest/price,
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$availRequest/quantityAvail) }</quo:totalCost>
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</quo:quoteResponse>
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}
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</quo:quote>
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};
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</PRE>
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</DIV></DIV></TD></TR></TBODY></TABLE>
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</DIV>
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</DIV>
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</DIV>
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<!-- pageContent macro end -->
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</TD>
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</TR>
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</TABLE>
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<!-- footer macro -->
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||
<SCRIPT src="http://www.google-analytics.com/urchin.js" type="text/javascript">
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</SCRIPT>
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<SCRIPT type="text/javascript">
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_uacct = "UA-1174707-5";
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urchinTracker();
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</SCRIPT>
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<A href="http://www.statcounter.com/" target="_blank"><IMG src="http://c26.statcounter.com/counter.php?sc_project=2619156&java=0&security=94bd7e7d&invisible=0" alt="website stats" border="0"></A>
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<DIV class="footer">
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Copyright <20> 2003-2012, The Apache Software Foundation </BR>
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Apache Tuscany and the Apache Tuscany project logo are trademarks of The Apache Software Foundation.
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</DIV>
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<!-- footer macro end -->
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</BODY>
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</HTML>
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