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| <!DOCTYPE task PUBLIC "-//OASIS//DTD DITA Task//EN" | |
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| <?Pub Inc?> | |
| <task id="taddincl" xml:lang="en-us"> | |
| <title>Adding include elements</title> | |
| <titlealts> | |
| <searchtitle>Adding include elements</searchtitle> | |
| </titlealts> | |
| <shortdesc>As schemas become larger, it is often desirable to divide their | |
| content among several schema documents for purposes such as ease of maintenance, | |
| reuse, and readability. You can use the <codeph>include</codeph> element to | |
| bring in definitions and declarations from the included schema | |
| into the current schema. The included schema must be in the same target namespace | |
| as the including schema. </shortdesc> | |
| <prolog><metadata> | |
| <keywords><indexterm>XML schema editor<indexterm>include elements</indexterm></indexterm> | |
| <indexterm>XML schema files<indexterm>include elements</indexterm></indexterm> | |
| </keywords> | |
| </metadata></prolog> | |
| <taskbody> | |
| <context><p>The following instructions were written for the XML perspective, | |
| but they will also work in many other perspectives.</p><p>To add an include | |
| element, follow these steps:</p></context> | |
| <steps> | |
| <step><cmd>Open your XML schema in the XML schema editor.</cmd></step> | |
| <step><cmd>In the Outline view, select your schema.</cmd><info>The entire | |
| schema and its contents are displayed in the Design view.</info></step> | |
| <step><cmd>In the Design view, right-click in the <b>Directives</b> section | |
| and click <uicontrol>Add Include</uicontrol>.</cmd></step> | |
| <step><cmd>In the Properties view, click the <b>General</b> tab and click <uicontrol>Browse</uicontrol> <image | |
| href="../images/Browse.gif"><alt>This graphic is the Browse button</alt></image> to | |
| the right of the <uicontrol>Schema location</uicontrol> field.</cmd><info>The | |
| XML schema file you select must have the same namespace as the current schema.</info> | |
| </step> | |
| <step><cmd>If you want to select an XML schema located in the workbench, select <uicontrol>Workbench | |
| projects</uicontrol> and click <uicontrol>Next</uicontrol>. </cmd></step> | |
| <step><cmd>Select the schema you want to include and click <uicontrol>Finish</uicontrol>.</cmd> | |
| </step> | |
| <step><cmd>If you want to select an XML schema located on the Web, select <uicontrol>HTTP</uicontrol> and | |
| click <uicontrol>Next</uicontrol>.</cmd></step> | |
| <step><cmd>Type the URL of the XML schema and click <uicontrol>Finish</uicontrol>.</cmd> | |
| <info><note> 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.</note></info></step> | |
| <step><cmd>The XML schema editor will retrieve the location of the included | |
| XML schema file, and display it in the <uicontrol>Schema location</uicontrol> field. | |
| This field can be edited at any time to reflect the location of the XML schema | |
| file.</cmd></step> | |
| <step><cmd>Click the <uicontrol>Documentation</uicontrol> tab if you want | |
| to provide any information about this include element.</cmd><info>The <uicontrol>Documentation</uicontrol> page | |
| is used for human readable material, such as a description.</info></step> | |
| <step><cmd>Click the <uicontrol>Extensions</uicontrol> tab if you want to | |
| add application information elements to your annotations of schema components.</cmd> | |
| <info>The <uicontrol>Extensions</uicontrol> page allows you to specify the | |
| schema and add XML content to your annotations.</info></step> | |
| </steps> | |
| <result><p>Once you have added the include element to your XML schema, when | |
| you define new elements, attributes, complex types, or simple types where | |
| you can specify type information, any declarations from the included schema | |
| will be available in the <uicontrol>Type</uicontrol> list for the element, | |
| attribute, complex or simple type.</p><p>For example, if Address.xsd has the | |
| following content:</p><codeblock><complexType name="Address"> | |
| <sequence> | |
| <element name="name" type="string"> | |
| <element name="street" type="string"> | |
| </sequence> | |
| </complexType> | |
| </codeblock>and you have an XML schema called PurchaseOrder.xsd that has added | |
| an include for Address.xsd, then when defining a new element in PurchaseOrder, | |
| you can select Address as its type. <p>(c) Copyright 2001, World Wide Web | |
| Consortium (Massachusetts Institute of Technology, Institut National de Recherche | |
| en Informatique et en Automatique, Keio University).</p></result> | |
| </taskbody> | |
| </task> | |
| <?Pub *0000004728?> |