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| <meta name="DC.Title" content="Adding redefine elements" /> |
| <meta name="abstract" content="You can use the redefine mechanism to redefine simple and complex types, groups, and attribute groups obtained from external schema files. When you redefine a component, you are modifying its contents." /> |
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| <h1 class="topictitle1">Adding redefine elements</h1> |
| |
| |
| |
| |
| <div><p>You can use the <samp class="codeph">redefine</samp> mechanism to redefine |
| simple and complex types, groups, and attribute groups obtained from external |
| schema files. When you redefine a component, you are modifying its contents.</p> |
| |
| <div class="section"><p>Like the <samp class="codeph">include</samp> mechanism, <samp class="codeph">redefine</samp> requires |
| the external components to be in the same target namespace as the redefining |
| schema, although external components from schemas that have no namespace can |
| also be redefined.</p> |
| <p>The following instructions were written for the Resource |
| perspective, but they will also work in many other perspectives.</p> |
| <p>To |
| add a redefine element , follow these steps:</p> |
| </div> |
| |
| <ol> |
| <li class="stepexpand"><span>Open your XML schema in the XML schema editor.</span></li> |
| |
| <li class="stepexpand"><span>In the Outline view, select your schema.</span> The entire |
| schema and its contents should be displayed in the Graph view.</li> |
| |
| <li class="stepexpand"><span>In the Graph view, right-click in the <strong>Directives</strong> section |
| and click <span class="uicontrol">Add Redefine</span>.</span></li> |
| |
| <li class="stepexpand"><span>In the Properties view, click the <strong>General</strong> tab and click |
| the <span class="uicontrol">Browse</span> <img src="../images/Browse.gif" alt="This graphic is the Browse button" /> button to the right of the <span class="uicontrol">Schema |
| location</span> field.</span> The XML schema file you select must |
| have the same namespace as the current schema.</li> |
| |
| <li class="stepexpand"><span>If you want to select an XML schema located in the workbench, select |
| the <span class="uicontrol">Workbench projects</span> radio button and click <span class="uicontrol">Next.</span></span> |
| <ol type="a"> |
| <li><span> Select the schema you want to include and click <span class="uicontrol">Finish</span>.</span> |
| </li> |
| |
| </ol> |
| |
| </li> |
| |
| <li class="stepexpand"><span>If you want to select an XML schema located on the Web, select |
| the <span class="uicontrol">HTTP</span> radio button and click <span class="uicontrol">Next</span>.</span> |
| <ol type="a"> |
| <li><span>Type the URL of the XML schema and click <span class="uicontrol">Finish</span>. |
| </span></li> |
| |
| </ol> |
| |
| <div class="note"><span class="notetitle">Note:</span> A local copy of the schema will not be stored in the workbench. |
| Every time you validate your schema, the schema's contents will be checked |
| from the URL you specify.</div> |
| </li> |
| |
| <li class="stepexpand"><span>The XML schema editor will retrieve the location of the included |
| XML schema file, and display it in the <span class="uicontrol">Schema location</span> field. |
| This field can be edited at any time to reflect the location of the XML schema |
| file.</span></li> |
| |
| <li class="stepexpand"><span>Click the <span class="uicontrol">Documentation</span> tab if you want |
| to provide any information about this redefine element.</span> The <span class="uicontrol">Documentation</span> page |
| is used for human readable material, such as a description, and the <span class="uicontrol">App |
| Info</span> page can be used to provide information for applications. |
| </li> |
| |
| </ol> |
| |
| <div class="section"><p>Once you have added the redefine element to your XML schema, you |
| can redefine any of the simple and complex types, groups, and attribute groups |
| in the XML schema you selected in the redefine element. </p> |
| </div> |
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