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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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  <title>Tuscany BigBank Sample Application</title>
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<body>

  <h3>Tuscany BigBank Sample Application</h3>

  <h4>Overview</h4>

  <p>The Tuscany BigBank&nbsp;sample application&nbsp; shows using
  the Tuscany SCA runtime to build a&nbsp; financial application.
  There are two modules: webclient provides the front-end user
  interface and account provides the back-end business services.
  These are deployed as separate web applications</p>

  <h4>Location</h4>
  <p>This sample is located&nbsp;in the&nbsp;
  <a href=".">samples\applications\bigbank</a> directory. There are two
  subdirectories in that for the two modules <a href="account"
  target="_blank">account</a> and <a href="webclient" target=
  "_blank">webclient.</a></p>


  <h4>Prerequisites</h4>

  <p>Obtain the following prerequisites and install according to
  their documentation.</p>

  <ul>
    <li><a href="http://java.sun.com/javase/downloads/index.jsp"
    target="_blank">JDK 5.0</a></li>

    <li><a href="http://maven.apache.org/download.html" target=
    "_blank">Maven 2.0.4</a></li>

    <li><a href="http://tomcat.apache.org/download-55.cgi" target=
    "_blank">Apache Tomcat 5.xx</a> latest version binary core
    distribution.&nbsp;</li>
  </ul>

  <h4><a name="Building" id="Building"></a>Building</h4>
  <p>This sample
  can be built from the bigbank directory using Maven 2.0.4 with
  the following command:</p>
  <p>
  <code>&nbsp;mvn<br></code>
  </p>

  <h4>Setup</h4>
  <p>If you have enabled remote deployment in Tomcat by
  adding the line:<br>
  <code>&nbsp; &lt;user username="admin" password=""
  roles="manager"/&gt;</code><br>
  into&nbsp; <span style="font-style: italic;">&lt;tomcat
  dir&gt;</span>\conf\tomcat-users.xml&nbsp; you can deploy the
  WARs to Tomcat using the tomcat-maven-plugin:<br>
  <code>mvn tomcat:deploy</code></p>
  <p>Alternatively you can copy the WAR files to Tomcat's&nbsp;
  webapps directory.<br>
  
  <code>copy account\target\sample-bigbank-account.war <span style=
  "font-style: italic;">&lt;tomcat dir&gt;</span>\webapps</code><br>
  <code>copy&nbsp;
  webclient\target\sample-bigbank-webclient.war&nbsp;<span style=
  "font-style: italic;">&lt;tomcat dir&gt;</span>\webapps</code><br>
  </p>

  <h4>Running</h4>
  <p>Once you've started your web server, use your web
  browser to view the following URL <a href=
  "http://localhost:8080/sample-bigbank-webclient/" target=
  "_blank">http://localhost:8080/sample-bigbank-webclient/</a><br>
  You can either use an already pre configured&nbsp; account with
  <span style="font-weight: bold;">Login</span> as <span style=
  "color: rgb(204, 0, 0); font-weight: bold;">test</span> and
  <span style="font-weight: bold;">Password</span> as <span style=
  "color: rgb(204, 0, 0); font-weight: bold;">password,</span> or
  you can &nbsp;create a new account.<br>
  The demo is first configured to use a local mock stock quote
  service that returns random stock data. &nbsp;If you want to use
  an actual stock quote provider follow these steps:</p>

  <ul>
    <li>Stop your server by issuing in the&nbsp; <span style=
    "font-style: italic;">&lt;tomcat dir&gt;</span><span style=
    "font-weight: bold;">\bin</span> directory</li>

    <li>Issue <span style="font-weight: bold;">shutdown</span>
    command to stop your web application server<span style=
    "font-weight: bold;">.</span></li>

    <li>Edit the account SCDL file <span style=
    "font-style: italic;">&lt;tomcat dir&gt;</span><span style=
    "font-weight: bold;">\webapps\sample-bigbank-account\WEB-INF\default.scdl</span></li>

    <li>Change the SCDL wiring to remove the mock stock quote
    service by commenting it out as follows:<br>
    &lt;!--<br>
    &nbsp;&nbsp;&nbsp; &lt;component
    name="StockQuoteServiceComponent"&gt;<br>
    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
    &lt;implementation.java
    class="bigbank.account.services.stockquote.StockQuoteServiceImpl"
    /&gt;<br>
    &nbsp;&nbsp;&nbsp; &lt;/component&gt;<br>
    --&gt;</li>

    <li>Uncomment the real stockquote service section in lines 68
    to 80.<br></li>

    <li>Change to the directory &nbsp;<span style=
    "font-weight: bold;">apache-tomcat-5.5.17\bin&nbsp;</span></li>

    <li>issue <span style="font-weight: bold;">startup
    &nbsp;</span> command to start up the server in the
    <span style="font-style: italic;">&lt;tomcat dir&gt;</span>\bin
    directory<span style="font-weight: bold;">.</span></li>
  </ul>
  <p>The sample should now be using the real stock quote
  provider.&nbsp;</p>

  <h4>Summary</h4><p>This example illustrates using Tuscany runtime
  in building a financial Web application&nbsp;using SCA programing
  model. &nbsp;The following key concepts are covered:</p>

  <ul>
    <li><b><i>Component implementations</i></b>. that provide web
    based&nbsp; HTML&nbsp;user interface</li>

    <li><b><i>Component implementations</i></b> that provide
    <b><i>local services</i></b> in Java. Local services implement
    internal application business logic such as tracking user state
    and are not exposed remotely.</li>

    <li><b><i>Component implementations</i></b> that have
    <b><i>configuration properties</i></b> and <b><i>service
    references</i></b> to other services</li>

    <li><b><i>Components</i></b> that use and
    <b><i>configure</i></b> <b><i>the properties and
    references</i></b> of component implementations</li>

    <li><b><i>SCA Services</i></b> to publish remotable services
    via a <b><i>Web Service binding</i></b>.</li>

    <li><b><i>SCA References&nbsp;</i></b> to consume remotable
    services via a <b><i>Web Service binding</i></b></li>

    <li>Assembling implementation, components, entry points and
    external service into composite components.</li>

    <li>Creating a module and all of its artifacts as part of a
    <b><i>web application</i></b> to show a front-end access to SCA
    services</li>

    <li>The use of Data Access services to persist and retrieve
    Service Data Objects from Apache Derby.</li>

    <li style="text-align: left;">The use of &nbsp;existing Web
    services in&nbsp; SCA.</li>
  </ul><p>BigBank sample provides the following user services: account
  balance,&nbsp;making deposits and withdrawals&nbsp; to purchase
  and sell stock, and to view current stock value.<br>
  The sample is organized into two SCA modules: webclient and
  account. The webclient module functionality is to provide user
  information and obtain user input. The account module is used to
  retrieve and store user information, account information, current
  stock information and the purchasing and selling of stock. The
  two modules interact via web services through SCA references and
  services.</p>
  <br>

  <div style="text-align: center;">
    <img style="width: 381px; height: 169px;" alt=
    "Overview of modules." title="Overview of modules." src=
    "docs/modualoverview.png" align="middle">

    <h5>Webclient</h5><br>
    <a href=
    "javascript:expandImage('docs/Show.Image.html?url=webclientmodule.png',1000,1100)">
    <img style="width: 300px; height: 200px;" alt="Webclient files"
    title="Click to expand" src="docs/webclientmodule.png"></a><br>

    <p>&nbsp;</p>

    <table style="text-align: left; width: 100%;" border="0"
    cellpadding="1" cellspacing="0" width="100%">
      <tbody>
        <tr>
          <td align="left" valign="top" width="*">
            <a href=
            "javascript:expandImage('docs/Show.Image.html?url=webclientfiles.png',850,500)">
            <img style="width: 262px; height: 360px;" alt=
            "Webclient files" title="Click to expand" src=
            "docs/webclientfiles.png"></a>&nbsp;<br>

            <div style="text-align: center;">
              <small><span style="font-style: italic;">click to
              enlarge</span></small>
            </div>
          </td>

          <td style="text-align: left;" align="left" valign="top"
          width="80%">
            <table style="text-align: left; width: 100%;" border=
            "0" cellpadding="1" cellspacing="0">
              <tbody>
                <tr>
                  <td style="text-align: center;" colspan="3">
                  <span style=
                  "font-weight: bold; text-decoration: underline;">Java
                  source files implementing SCA components and
                  interfaces.</span></td>
                </tr>

                <tr>
                  <td style="width: 10%;">
                  AccountServiceComponentImpl.java</td>

                  <td>&nbsp;</td>

                  <td>Implements the account service.</td>
                </tr>

                <tr>
                  <td>AccountLoginServiceImpl.java</td>

                  <td></td>

                  <td>Implements the Login service.</td>
                </tr>

                <tr>
                  <td>LoginService.java</td>

                  <td></td>

                  <td>Interface for a services provided by a
                  login&nbsp; service component.</td>
                </tr>

                <tr>
                  <td>ProfileService.java</td>

                  <td></td>

                  <td>Interface for a service provided by a profile
                  component.</td>
                </tr>

                <tr>
                  <td>ProfileServiceImpl.java</td>

                  <td></td>

                  <td>Implements the profile component.</td>
                </tr>

                <tr>
                  <td>SimpleLoginServiceImpl.java</td>

                  <td></td>

                  <td>A simple in memory login service.</td>
                </tr>

                <tr>
                  <td style="text-align: center;" colspan="3">
                  <span style=
                  "font-weight: bold; text-decoration: underline;">Java
                  source files implementing Web HTML
                  interface.</span></td>
                </tr>

                <tr>
                  <td>AccountStatusTag.java</td>

                  <td></td>

                  <td>Implements a jsp tag that&nbsp;displays the
                  account information</td>
                </tr>

                <tr>
                  <td>StockStatusTag.java</td>

                  <td></td>

                  <td>Implements a jsp tag that displays the stock
                  information.</td>
                </tr>

                <tr>
                  <td>LoginBarrierTag.java</td>

                  <td></td>

                  <td>Implements a jsp tag that ensures the user is
                  logged in.</td>
                </tr>

                <tr>
                  <td>ServiceTag.java</td>

                  <td></td>

                  <td>Places an SCA service in the JSP page
                  context.</td>
                </tr>

                <tr>
                  <td>FormServlet.java</td>

                  <td></td>

                  <td>Process user input and uses the
                  AccountService component.</td>
                </tr>

                <tr>
                  <td>LoginServlet.java</td>

                  <td></td>

                  <td>Processes logging in and logout.</td>
                </tr>

                <tr>
                  <td style="text-align: center;" colspan="3">
                  <span style=
                  "font-weight: bold; text-decoration: underline;">Files
                  that will be loaded as resources along
                  classpath.</span></td>
                </tr>

                <tr>
                  <td>AccountService.wsdl</td>

                  <td></td>

                  <td>WSDL that &nbsp;defines the account
                  service.</td>
                </tr>

                <tr>
                  <td>bigbank-tags.tld</td>

                  <td></td>

                  <td>Defines the tag libs for the user
                  interface.</td>
                </tr>

                <tr align="center">
                  <td colspan="3"><span style=
                  "font-weight: bold; text-decoration: underline;">Files
                  located in WEB-INF directory.</span></td>
                </tr>

                <tr>
                  <td><a href="#SCDL">default.scdl</a></td>

                  <td></td>

                  <td>Application's SCA SCDL file.</td>
                </tr>

                <tr>
                  <td><a href="#Web.xml">web.xml</a></td>

                  <td></td>

                  <td>Application's web.xml file.</td>
                </tr>

                <tr align="center">
                  <td colspan="3"><span style=
                  "font-weight: bold; text-decoration: underline;">Generated
                  Files.</span></td>
                </tr>

                <tr>
                  <td>sdo source</td>

                  <td></td>

                  <td>Generated SDO. Created by <a href=
                  "#tuscany-sdo-plugin"><code><span style=
                  "font-weight: bold;">tuscany-sdo-plugin</span></code></a>
                  maven plugin.</td>
                </tr>

                <tr>
                  <td>wsdl2java-source</td>

                  <td></td>

                  <td>Generated SDO interface. Created by <a href=
                  "#tuscany-plugin-wsdl2java"><code><span style=
                  "font-weight: bold;">tuscany-plugin-wsdl2java</span></code></a>
                  maven &nbsp;plugin.</td>
                </tr>

                <tr align="center">
                  <td colspan="3"><span style=
                  "font-weight: bold; text-decoration: underline;">Build
                  files.</span></td>
                </tr>

                <tr>
                  <td><a href="#pom.xml">pom.xml</a></td>

                  <td></td>

                  <td>Maven build file.</td>
                </tr>
              </tbody>
            </table>
          </td>
        </tr>
      </tbody>
    </table>

    <p>&nbsp;</p><!-- account -->

    <h5>Account</h5><br>
    <a href=
    "javascript:expandImage('docs/Show.Image.html?url=accountmodule.png',830,1400)">
    <img style="width: 300px; height: 200px;" alt="Account module"
    title="Click to expand" src="docs/accountmodule.png"></a><br>

    <p>&nbsp;</p>

    <table style="text-align: left; width: 100%;" border="0"
    cellpadding="1" cellspacing="0" width="100%">
      <tbody>
        <tr>
          <td align="left" valign="top" width="*">
            <a href=
            "javascript:expandImage('docs/Show.Image.html?url=accountfiles.png',850,500)">
            <img style="width: 262px; height: 360px;" alt=
            "Webclient files" title="Click to expand" src=
            "docs/accountfiles.png"></a>&nbsp;<br>

            <div style="text-align: center;">
              <small><span style="font-style: italic;">click to
              enlarge</span></small>
            </div>
          </td>

          <td style="text-align: left;" align="left" valign="top"
          width="80%">
            <table style="text-align: left; width: 100%;" border=
            "0" cellpadding="1" cellspacing="0">
              <tbody>
                <tr>
                  <td style="text-align: center;" colspan="3">
                  <span style=
                  "font-weight: bold; text-decoration: underline;">Java
                  source files implementing SCA components and
                  interfaces.</span></td>
                </tr>

                <tr>
                  <td style="width: 10%;">
                  AccountServiceImpl.java</td>

                  <td>&nbsp;</td>

                  <td>Implements the account service
                  component.</td>
                </tr>

                <tr>
                  <td>AccountDataService.java</td>

                  <td></td>

                  <td>Interface defined for component implementing
                  &nbsp;an account's data service.</td>
                </tr>

                <tr>
                  <td>AccountDataServiceDASImpl.java</td>

                  <td></td>

                  <td>A Data Access Service (DAS) implementation of
                  of the Account Data Service.</td>
                </tr>

                <tr>
                  <td>AccountDataServiceImpl.java</td>

                  <td></td>

                  <td>A Data Service implementation not using
                  DAS.</td>
                </tr>

                <tr>
                  <td>AccountDBInit.java</td>

                  <td></td>

                  <td>A utility to just create the database and it
                  table and fill in some initial data.</td>
                </tr>

                <tr>
                  <td>StockQuote.java</td>

                  <td></td>

                  <td>A class to hold the StockQuote
                  information.</td>
                </tr>

                <tr>
                  <td>StockQuoteService.java</td>

                  <td></td>

                  <td>Interface defined for a component
                  implementing a stock quote service.</td>
                </tr>

                <tr>
                  <td>StockQuoteServiceImpl.java</td>

                  <td></td>

                  <td>Implements a fake stock quote service.</td>
                </tr>

                <tr>
                  <td>StockQuoteWebservicexServiceImpl.java</td>

                  <td></td>

                  <td>Implements an actual stock quote
                  service.</td>
                </tr>

                <tr>
                  <td style="text-align: center;" colspan="3">
                  <span style=
                  "font-weight: bold; text-decoration: underline;">Files
                  that will be loaded as resources along
                  classpath.</span></td>
                </tr>

                <tr>
                  <td>AccountService.wsdl</td>

                  <td></td>

                  <td>WSDL that &nbsp;defines the account
                  service</td>
                </tr>

                <tr>
                  <td>stockquotes.webservicex.wsdl</td>

                  <td></td>

                  <td>Actual stock quote service WSDL.</td>
                </tr>

                <tr>
                  <td><a href=
                  "#DAS_">DasAccountConfiguration.xml</a></td>

                  <td></td>

                  <td>Provides any needed configuration info
                  including datasource properties, table
                  definitions,</td>
                </tr>

                <tr align="center">
                  <td colspan="3"><span style=
                  "font-weight: bold; text-decoration: underline;">Files
                  located in WEB-INF directory.</span></td>
                </tr>

                <tr>
                  <td><a href="#SCDL">default.scdl</a></td>

                  <td></td>

                  <td>Application's SCA SCDL file.</td>
                </tr>

                <tr>
                  <td><a href="#Web.xml">web.xml</a></td>

                  <td></td>

                  <td>Application's web.xml file.</td>
                </tr>

                <tr align="center">
                  <td colspan="3"><span style=
                  "font-weight: bold; text-decoration: underline;">Generated
                  Files.</span></td>
                </tr>

                <tr>
                  <td>sdo source</td>

                  <td></td>

                  <td>Generated SDO. Created by&nbsp;<a href=
                  "#tuscany-sdo-plugin"><code><span style=
                  "font-weight: bold;">tuscany-sdo-plugin</span></code></a>
                  maven plugin.</td>
                </tr>

                <tr>
                  <td>wsdl2java-source</td>

                  <td></td>

                  <td>Generated SDO interface. Created
                  by&nbsp;<a href=
                  "#tuscany-plugin-wsdl2java"><code><span style=
                  "font-weight: bold;">tuscany-plugin-wsdl2java</span></code></a>
                  maven &nbsp;plugin.</td>
                </tr>

                <tr align="center">
                  <td colspan="3"><span style=
                  "font-weight: bold; text-decoration: underline;">Build
                  files.</span></td>
                </tr>

                <tr>
                  <td><a href="#pom.xml">pom.xml</a></td>

                  <td></td>

                  <td>Maven build file.</td>
                </tr>
              </tbody>
            </table>
          </td>
        </tr>
      </tbody>
    </table>
  </div><br>
  <br>


  <h5><a name="pom.xml" id="pom.xml"></a>Pom.xml</h5>
  <p>The directions
  for maven&nbsp; how&nbsp; to build the each module is located in
  each module's directory in the&nbsp;pom.xml file. &nbsp;The
  application uses Java 1.5 and thus in the build &nbsp;plugin
  section needs the following compiler directives:</p>
  &nbsp;&nbsp;<code>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  &lt;plugin&gt;<br>
  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;<br>
  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  &lt;artifactId&gt;maven-compiler-plugin&lt;/artifactId&gt;<br>
  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  &lt;configuration&gt;<br>
  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  &lt;source&gt;<span style=
  "color: rgb(255, 0, 0); font-weight: bold;">1.5</span>&lt;/source&gt;<br>

  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  &lt;target&gt;<span style=
  "color: rgb(255, 0, 0); font-weight: bold;">1.5</span>&lt;/target&gt;<br>

  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  &lt;/configuration&gt;<br>
  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
  &lt;/plugin&gt;</code><br>
  <p>Both webclient and account uses three maven
  plugins:&nbsp;<code style=
  "font-weight: bold;">tuscany-sdo-plugin</code>,&nbsp;<code style=
  "font-weight: bold;">tuscany-plugin-wsdl2java</code>,
  and&nbsp;<code style=
  "font-weight: bold;">tuscany-war-plugin</code>.
  The&nbsp;tuscany-sdo-plugin is provided by Tuscany 's SDO project
  while the other two are provided by the Tuscany SCA project.</p>
  <p>The <code style="font-weight: bold;"><a name="tuscany-sdo-plugin"
  id="tuscany-sdo-plugin"></a>tuscany-sdo-plugin</code>
  &nbsp;references the WSDL's schema and generates all the files
  located in target/sdo_source directory. &nbsp;The application
  uses these classes as a databinding instead of having to deal
  directly with XML that &nbsp;represents form as defined in the
  WSDL's schema.</p>
  <p>The <code style="font-weight: bold;"><a name=
  "tuscany-plugin-wsdl2java" id=
  "tuscany-plugin-wsdl2java"></a>tuscany-plugin-wsdl2java</code>
  plugin generates a Java interface in the target/wsdl2java-source
  directory that is used to define the inteface (prottype) in the
  wsdl.</p>
  <p>The <code style="font-weight: bold;">tuscany-war-plugin</code> is
  used to add both the Tuscany runtime and any Tuscany&nbsp;
  extensions required by the application in the war file.. Looking
  at the pom.xml and search for &nbsp;"<code style=
  "font-weight: bold;">tuscany-war-plugin"</code> you'll find the
  plugin. &nbsp;Which extension you want loaded are specified in
  the <code><span style=
  "font-weight: bold;">extensions</span></code> section. The format
  for this&nbsp; closely follows Maven's artifact naming. &nbsp;The
  boolean <code><span style=
  "font-weight: bold;">loadExtensionDependencies</span></code>
  option if true will &nbsp;resolve all dependencies for each
  extension listed here and also include them in the war file.
  &nbsp;<br>
  <br>

  <h4>Application</h4>

  <h5><a name="Web.xml" id="Web.xml"></a>Web.xml</h5><p>The web.xml
  file in each module adds necessary "hooks" to initiate and
  maintain the Tuscany SCA runtime in a web application host.<br>
  &nbsp;</p>

  <table style="text-align: left; width: 100%;" border="1"
  cellpadding="2" cellspacing="2">
    <tbody>
      <tr>
        <td>
          <pre>
<small>&lt;listener&gt;<br>
&lt;listener-class&gt;org.apache.tuscany.runtime.webapp.TuscanyContextListener&lt;/listener-class&gt;<br>
&lt;/listener&gt;</small>
</pre>
        </td>

        <td>This class initializes the Tuscany runtime when the
        applications is started and helps finalize the Tuscany
        runtime when the application has ended.</td>
      </tr>

      <tr>
        <td>
          <pre>
<small>&lt;servlet&gt;<br>
&lt;servlet-name&gt;TuscanyServlet&lt;/servlet-name&gt;<br>
&lt;display-name&gt;Tuscany Servlet&lt;/display-name&gt;<br>
&lt;servlet-class&gt;org.apache.tuscany.runtime.webapp.TuscanyServlet&lt;/servlet-class&gt;<br>
&lt;/servlet&gt;</small>
</pre>
        </td>

        <td>This class provides the web applications servlet
        interface to SCA components. &nbsp;The Axis websevices
        binding extension requires this.</td>
      </tr>

      <tr>
        <td>
          <pre>
<small>&lt;listener&gt;<br>
&lt;listener-class&gt;org.apache.tuscany.runtime.webapp.TuscanySessionListener&lt;/listener-class&gt;<br>
&lt;/listener&gt;</small>
</pre>
        </td>

        <td>This listener helps provide SCA session support .</td>
      </tr>
    </tbody>
  </table><br>
  <p>The web application can be run in offline or online when
  resolving dependencies required by the application or it's
  required extensions. This is configured in the web.xml with the
  context-param element with a parameter name <code><span style=
  "font-weight: bold;">tuscany.online</span></code>. If&nbsp; not
  specified or set to true, dependencies are resolved by searching
  the local war repository, the local Maven repository, and remote
  repositories. If specified and set to false, the remote
  repositories will not be searched.</p>

  <h5><a name="SCDL" id="SCDL"></a>SCDL</h5>
  <p>Each module's SCA
  application SCDL is located in the web application&nbsp;
  WEB-INF/default.scdl file. &nbsp;This is the default location,
  but within the web.xml it is possible to override this with a
  context-param element &nbsp;with the name <code><span style=
  "font-weight: bold;">tuscany.applicationScdlPath</span></code>.
  &nbsp;The Tuscany System SCDL can also be overridden with another
  context-param element with the name <code><span style=
  "font-weight: bold;">tuscany.systemScdlPath</span></code>.<br>
  The SCDL&nbsp; used by the BigBank application is defined by
  <a href=
  "http://www.osoa.org/download/attachments/35/SCA_AssemblyModel_V096.pdf?version=1"
  target="_blank">SCA Assembly Model V0.96</a> , <a href=
  "http://www.osoa.org/download/attachments/35/SCA_ClientAndImplementationModelforJava_v0.95.pdf?version=3"
  target="_blank">SCA Client and Implementation Model for Java
  (V0.95)</a> &nbsp;and the <a href=
  "http://www.osoa.org/download/attachments/35/SCA_WebServiceBindings_V096-draft1.pdf?version=3"
  target="_blank">SCA Web Service bindings</a> specifications.<br>
  There is one extension to SCDL used by BigBank that is specific
  to Tuscany that is used by SDO databinding extension.
  &nbsp;The&nbsp;<code>import.sdo</code> element in the SCDL
  specifies which&nbsp; SDO factories to register the SDO types.
  &nbsp;In the case of BigBank the factory is the class generated
  by the&nbsp;<code style=
  "font-weight: bold;">tuscany-sdo-plugin</code> maven plugin. An
  example of this follows:</p>
  <pre>
 <code>&lt;dbsdo:import.sdo xmlns:dbsdo="http://incubator.apache.org/tuscany/xmlns/databinding/sdo/1.0-incubator-M2"
factory="com.bigbank.account.AccountFactory"/&gt; <br>
</code>
</pre>

  <h5>Code</h5><p>The Java code for the most part just implements the
  Web interface and the SCA components necessary to implement the
  business logic. The code uses Java 5.0 annotations as documented
  by the <a href=
  "http://www.osoa.org/download/attachments/35/SCA_ClientAndImplementationModelforJava_v0.95.pdf?version=3"
  target="_blank">SCA Client and Implementation Model for Java
  (V0.95)</a> specifications. The samples uses one annotation that
  is an Tuscany extension that is used by the databinding framework
  to identify that the components expect to SDO s for complex data
  types. An example of this is seen in the AccountService interface
  which has the <code style=
  "font-weight: bold;">@DataType(name="commonj.sdo.DataObject")</code>
  annotation.</p>

  <h4><a name="DAS_" id="DAS_"></a><span style=
  "font-family: monospace;">RDB DAS</span></h4>

   <p>The Relational Database DAS (RDB DAS) is used in this sample to access relational data in terms
   of SDOs.  All the code pertaining to this usage is contained to two one files: 
   AccountDataServiceDASImpl.java and DasAccountConfiguration.xml.  The java file provides code that 
   instantiates and invokes the DAS and the XML file provides RDB DAS configuration.</p>

   <p>The sample demonstrates a few of the RDB DAS capabilities including:</p>

   <ul>

   <li>reading a graph of SDOs based on a select query provided inline </li>
   <li>reading a graph of SDOs based on a named select query defined in the config file </li>
   <li>executing a named command to manually insert data</li>
   <li>leveraging SDO Change Summary to by utilizing the DAS "applyChanges" method to flush graph modifications </li>
   <li>utilizing the DAS column-converter framework </li>
   <li>using the column/property name mapping (aliasing)</li>

   </ul>

   <p>This sample does not currently demonstrate a few other key DAS features including Object relationships, optimistic 
   concurrency control, and the use of convention over configuration.  User level documentation for the RDB DAS can
   be found in the <a href=
  "http://wiki.apache.org/ws/Tuscany/TuscanyJava/DAS_Java_Overview/RDBDAS_Java_User_Guide"target="_blank">RDBDAS User's Guide</a>.
  </p>
   <p>This sample uses the RDB DAS as a utility.  A future version of this sample will access the DAS as an SCA service.
   </p>

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