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<task id="taddglem" xml:lang="en-us"> | |
<title>Adding global elements</title> | |
<titlealts> | |
<searchtitle>Adding global elements</searchtitle> | |
</titlealts> | |
<shortdesc>A global element is an element with a global scope. It is one that | |
has been declared as part of the main schema rather than as part of a content | |
model.</shortdesc> | |
<prolog><metadata> | |
<keywords><indexterm>XML schema editor<indexterm>global elements</indexterm></indexterm> | |
<indexterm>XML schema files<indexterm>global elements</indexterm></indexterm> | |
</keywords> | |
</metadata></prolog> | |
<taskbody> | |
<context><p>The following instructions were written for the Resource perspective, | |
but they will also work in many other perspectives.</p><p>To add a global | |
element, complete the following 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>Elements</b> section | |
and click <uicontrol>Add Element</uicontrol>.</cmd></step> | |
<step><cmd>In the Properties view, click the <uicontrol>General</uicontrol> tab, | |
and type a new name for the global element in the <uicontrol>Name</uicontrol> field.</cmd> | |
</step> | |
<step><cmd>In the Properties view, you can select the attribute type from | |
the predefined list in the menu next to the <uicontrol>Type</uicontrol> field.</cmd> | |
<info><p>Alternatively, you can select <uicontrol>Browse</uicontrol> from | |
the list for more options. </p><p>The <uicontrol>Set Type</uicontrol> dialog | |
box appears, and lists all built-in and user-defined types currently available. | |
You can change the <uicontrol>Scope</uicontrol> of the list by selecting one | |
of the following options:<ul> | |
<li><uicontrol>Workspace</uicontrol>: lists all of the types available in | |
your workspace. </li> | |
<li><uicontrol>Enclosing Project</uicontrol>: lists all of the types available | |
in the project that contains your file. </li> | |
<li>(Default) <uicontrol>Current Resource</uicontrol>: list all of the types | |
available in your current file.</li> | |
<li><uicontrol>Working Sets</uicontrol>: list all the types available within | |
the selected working set.</li> | |
</ul></p><p>Select the type you want in the type list, then click <uicontrol>OK</uicontrol>. </p></info> | |
</step> | |
<step><cmd>Click the <uicontrol>Advanced</uicontrol> tab.</cmd><info>In this | |
page, you can specify the following various values for the global element: </info> | |
<choices> | |
<choice><uicontrol>Abstract</uicontrol>: click <b>true</b> if you want the | |
global element to be abstract. When a global element is declared to be abstract, | |
it cannot be used in an instance document. Instead, a member of that global | |
element's substitution group must appear in the instance document.</choice> | |
<choice><uicontrol>Block</uicontrol>: determines whether the global element | |
may be replaced by an element derived from it.</choice> | |
<choice><uicontrol>Final</uicontrol>: determines whether this global element | |
may be derived from.</choice> | |
<choice><uicontrol>Substitution Group</uicontrol>: a substitution group allows | |
elements to be substituted for other elements.</choice> | |
<choice><uicontrol>Nillable</uicontrol>: select <b>true</b> if you do not | |
want the global element to be able to have any child elements, only attributes. </choice> | |
</choices> | |
</step> | |
<step><cmd>Click the <uicontrol>Documentation</uicontrol> tab to provide any | |
information about this global 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 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><?Pub Caret?> | |
</steps> | |
<postreq>You can add a content model to a global element, which is the representation | |
of any data that can be contained inside the global element. For more information | |
about working with content models, refer to the related tasks.</postreq> | |
</taskbody> | |
</task> | |
<?Pub *0000004383?> |