docs/org.eclipse.wst.xsdeditor.doc.user/topics/taddelmr.html - sourceediting/webtools.sourceediting - Git at Google

 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE html
   PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 <html>
 <head>
 <!-- /*******************************************************************************
  * Copyright (c) 2000, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/ -->
 <link rel="stylesheet" type="text/css" href="../../org.eclipse.wst.doc.user/common.css" />
 <title>Adding an element reference</title>
 </head>
 <body id="taddelmr"><a name="taddelmr"><!-- --></a>

 <h1 class="topictitle1">Adding an element reference</h1>
 <div><p>An element reference provides a reference to a global element.
 A declaration that references a global element enables the referenced global
 element to appear in the instance document in the context of the referencing
 declaration.  </p><div class="skipspace">The menu option to add an element reference only appears if there
 are global elements defined elsewhere in the document.<p>The following instructions
 were written for the Resource perspective, but they will also work in many
 other perspectives. </p>
 <p>To add an element reference, follow these
 steps:</p>
 </div>
 <ol><li class="skipspace"><span>In the Outline view, right-click the content model you want to
 work with and click <span class="uicontrol">Add Element Ref</span>.</span></li>
 <li class="skipspace"><span>Select the element reference.</span></li>
 <li class="skipspace"><span>In the Properties view, select the global element you want to reference
 in the <span class="uicontrol">ref</span> list.</span></li>
 <li class="skipspace"><span>(Optional) Select the appropriate value in the <span class="uicontrol">MinOccurs</span> field.</span> This is the number of times the global element referenced may appear.
 If you want the element to be optional, select <span class="uicontrol">0</span>. Otherwise,
 select <span class="uicontrol">1</span>. </li>
 <li class="skipspace"><span>(Optional) Select the appropriate value in the <span class="uicontrol">MaxOccurs</span> field.</span> This is the maximum number of times the global element referenced may
 appear. You can select <span class="uicontrol">unbounded</span> to indicate there
 is no maximum number of occurrences.</li>
 <li class="skipspace"><span>(Optional) Click the <span class="uicontrol">Other</span> tab. </span> In this page, you can specify various values for thel element reference,
 such as <span class="uicontrol">abstract</span>, <span class="uicontrol">block</span>, <span class="uicontrol">final</span>, <span class="uicontrol">fixed/default</span>, <span class="uicontrol">nillable</span>, and <span class="uicontrol">substituionGroup</span>.</li>
 <li class="skipspace"><span>Click the <span class="uicontrol">Attributes</span> tab</span> You
 can use this page to add attributes, attribute references, attributes group
 references, and <samp class="codeph">any</samp> attributes to your element reference.</li>
 <li class="skipspace"><span>An attribute associates an attribute name with a specific type
 and value. To add an attribute, right-click in the Attributes page, and click <span class="uicontrol">Add
 Attribute</span>.</span> You can specify the following values for
 an attribute<ul><li><span class="uicontrol">fixed/default</span>. Click the <span class="uicontrol">More</span> button
 and select the <span class="uicontrol">Fixed</span> or <span class="uicontrol">Default</span> radio
 button and specify an appropriate value. If you select <b>Fixed</b>, the attribute
 has a fixed value, which cannot be changed. If you select <b>Default</b>,
 the attribute has a default value.</li>
 <li><span class="uicontrol">form</span>. Use this field to indicate if the appearance
 of this attribute in an instance of the XML schema must be qualified by a
 namespace.</li>
 <li><span class="uicontrol">name</span>. Enter the name of the attribute.</li>
 <li><span class="uicontrol">type</span>. Click the <span class="uicontrol">More</span> button
 and select the type of the attribute. </li>
 <li><span class="uicontrol">use</span>. This field indicates how an attribute
 may be used in an instance document. If you select <b>optional</b>, the attribute
 may appear once, but it does not have to. If you select <b>required</b>, the
 attribute must appear once. If you select <b>prohibited</b>, the attribute
 must not appear. <b>Note</b>: If you selected the <span class="uicontrol">Default</span> radio
 button, you must select <b>optional</b> in this field, otherwise the default
 value will not be valid.</li>
 </ul>
 </li>
 <li class="skipspace"><span>An attribute reference provides a reference to a global attribute.
 To add an attribute reference, right-click in the Attributes page, and click <span class="uicontrol">Add
 Attribute Ref</span>.</span> A declaration that references a global
 attribute enables the referenced attribute to appear in the instance document
 in the context of the referencing declaration. The menu option to add
 an attribute reference only appears if there are global attributes defined
 elsewhere in the document.<ol type="a"><li><span>Select the reference, then select the global attribute you want
 it to reference from the <span class="uicontrol">ref</span> drop down list.</span></li>
 </ol>
 </li>
 <li class="skipspace"><span>An attribute group reference provides a reference to an attribute
 group. To add an attribute group reference, right-click in the Attributes
 page, and click <span class="uicontrol">Add Attribute Group Ref</span>.</span> A
 declaration that references an attribute group enables the referenced attribute
 group to appear in the instance document in the context of the referencing
 declaration. The menu option to add an attribute group reference only appears
 if there are attribute groups defined elsewhere in the document.<ol type="a"><li><span>Select the reference, then select the attribute group you want
 it to reference from the <span class="uicontrol">ref</span> drop down list.</span></li>
 </ol>
 </li>
 <li class="skipspace"><span>An <samp class="codeph">any</samp> element enables attributes to appear
 in <samp class="codeph">any</samp> elements. To add an <samp class="codeph">any</samp> attribute,
 right-click in the Attributes page, and click <span class="uicontrol">Add Any Attribute</span>.</span> You can specify the following values for an <samp class="codeph">any</samp> attribute:<ul><li>For a <b>namespace</b> value, you can select <b>##any</b> (this allows
 any well-formed XML from any namespace), <b>##local </b> (this allows any
 well-formed XML that is not declared to be in a namespace, <b>##other </b> (this
 allows any well-formed XML that is not from the target namespace of the type
 being defined) or <b>##targetNamespace </b> (which is shorthand for the target
 namespace of the type being defined). </li>
 <li>For a <span class="uicontrol">processContents</span> value, you can select <b>skip</b> (the
 XML processor will not validate the attribute content at all), <b>lax</b>(the
 XML processor will validate the attribute content as much as it can), or <b>strict </b> (the
 XML processor will validate all the attribute content).</li>
 </ul>
  </li>
 <li class="skipspace"><span>Click the <span class="uicontrol">Documentation</span> tab if you want
 to provide any information about this element reference.</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>

 <div><p><b class="reltaskshd">Related tasks</b><br />
 <a href="../topics/taddglem.html" title="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 complex type definition.">Adding a global element</a><br />
 </p>
 </div>
 </body>
 </html>
	<?xml version="1.0" encoding="UTF-8"?>
	<!DOCTYPE html
	PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
	<html>
	<head>
	<!-- /*******************************************************************************
	* Copyright (c) 2000, 2005 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/ -->
	<link rel="stylesheet" type="text/css" href="../../org.eclipse.wst.doc.user/common.css" />
	<title>Adding an element reference</title>
	</head>
	<body id="taddelmr"><a name="taddelmr"><!-- --></a>

	<h1 class="topictitle1">Adding an element reference</h1>
	<div><p>An element reference provides a reference to a global element.
	A declaration that references a global element enables the referenced global
	element to appear in the instance document in the context of the referencing
	declaration. </p><div class="skipspace">The menu option to add an element reference only appears if there
	are global elements defined elsewhere in the document.<p>The following instructions
	were written for the Resource perspective, but they will also work in many
	other perspectives. </p>
	<p>To add an element reference, follow these
	steps:</p>
	</div>
	<ol><li class="skipspace"><span>In the Outline view, right-click the content model you want to
	work with and click <span class="uicontrol">Add Element Ref</span>.</span></li>
	<li class="skipspace"><span>Select the element reference.</span></li>
	<li class="skipspace"><span>In the Properties view, select the global element you want to reference
	in the <span class="uicontrol">ref</span> list.</span></li>
	<li class="skipspace"><span>(Optional) Select the appropriate value in the <span class="uicontrol">MinOccurs</span> field.</span> This is the number of times the global element referenced may appear.
	If you want the element to be optional, select <span class="uicontrol">0</span>. Otherwise,
	select <span class="uicontrol">1</span>. </li>
	<li class="skipspace"><span>(Optional) Select the appropriate value in the <span class="uicontrol">MaxOccurs</span> field.</span> This is the maximum number of times the global element referenced may
	appear. You can select <span class="uicontrol">unbounded</span> to indicate there
	is no maximum number of occurrences.</li>
	<li class="skipspace"><span>(Optional) Click the <span class="uicontrol">Other</span> tab. </span> In this page, you can specify various values for thel element reference,
	such as <span class="uicontrol">abstract</span>, <span class="uicontrol">block</span>, <span class="uicontrol">final</span>, <span class="uicontrol">fixed/default</span>, <span class="uicontrol">nillable</span>, and <span class="uicontrol">substituionGroup</span>.</li>
	<li class="skipspace"><span>Click the <span class="uicontrol">Attributes</span> tab</span> You
	can use this page to add attributes, attribute references, attributes group
	references, and <samp class="codeph">any</samp> attributes to your element reference.</li>
	<li class="skipspace"><span>An attribute associates an attribute name with a specific type
	and value. To add an attribute, right-click in the Attributes page, and click <span class="uicontrol">Add
	Attribute</span>.</span> You can specify the following values for
	an attribute<ul><li><span class="uicontrol">fixed/default</span>. Click the <span class="uicontrol">More</span> button
	and select the <span class="uicontrol">Fixed</span> or <span class="uicontrol">Default</span> radio
	button and specify an appropriate value. If you select <b>Fixed</b>, the attribute
	has a fixed value, which cannot be changed. If you select <b>Default</b>,
	the attribute has a default value.</li>
	<li><span class="uicontrol">form</span>. Use this field to indicate if the appearance
	of this attribute in an instance of the XML schema must be qualified by a
	namespace.</li>
	<li><span class="uicontrol">name</span>. Enter the name of the attribute.</li>
	<li><span class="uicontrol">type</span>. Click the <span class="uicontrol">More</span> button
	and select the type of the attribute. </li>
	<li><span class="uicontrol">use</span>. This field indicates how an attribute
	may be used in an instance document. If you select <b>optional</b>, the attribute
	may appear once, but it does not have to. If you select <b>required</b>, the
	attribute must appear once. If you select <b>prohibited</b>, the attribute
	must not appear. <b>Note</b>: If you selected the <span class="uicontrol">Default</span> radio
	button, you must select <b>optional</b> in this field, otherwise the default
	value will not be valid.</li>
	</ul>
	</li>
	<li class="skipspace"><span>An attribute reference provides a reference to a global attribute.
	To add an attribute reference, right-click in the Attributes page, and click <span class="uicontrol">Add
	Attribute Ref</span>.</span> A declaration that references a global
	attribute enables the referenced attribute to appear in the instance document
	in the context of the referencing declaration. The menu option to add
	an attribute reference only appears if there are global attributes defined
	elsewhere in the document.<ol type="a"><li><span>Select the reference, then select the global attribute you want
	it to reference from the <span class="uicontrol">ref</span> drop down list.</span></li>
	</ol>
	</li>
	<li class="skipspace"><span>An attribute group reference provides a reference to an attribute
	group. To add an attribute group reference, right-click in the Attributes
	page, and click <span class="uicontrol">Add Attribute Group Ref</span>.</span> A
	declaration that references an attribute group enables the referenced attribute
	group to appear in the instance document in the context of the referencing
	declaration. The menu option to add an attribute group reference only appears
	if there are attribute groups defined elsewhere in the document.<ol type="a"><li><span>Select the reference, then select the attribute group you want
	it to reference from the <span class="uicontrol">ref</span> drop down list.</span></li>
	</ol>
	</li>
	<li class="skipspace"><span>An <samp class="codeph">any</samp> element enables attributes to appear
	in <samp class="codeph">any</samp> elements. To add an <samp class="codeph">any</samp> attribute,
	right-click in the Attributes page, and click <span class="uicontrol">Add Any Attribute</span>.</span> You can specify the following values for an <samp class="codeph">any</samp> attribute:<ul><li>For a <b>namespace</b> value, you can select <b>##any</b> (this allows
	any well-formed XML from any namespace), <b>##local </b> (this allows any
	well-formed XML that is not declared to be in a namespace, <b>##other </b> (this
	allows any well-formed XML that is not from the target namespace of the type
	being defined) or <b>##targetNamespace </b> (which is shorthand for the target
	namespace of the type being defined). </li>
	<li>For a <span class="uicontrol">processContents</span> value, you can select <b>skip</b> (the
	XML processor will not validate the attribute content at all), <b>lax</b>(the
	XML processor will validate the attribute content as much as it can), or <b>strict </b> (the
	XML processor will validate all the attribute content).</li>
	</ul>
	</li>
	<li class="skipspace"><span>Click the <span class="uicontrol">Documentation</span> tab if you want
	to provide any information about this element reference.</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>

	<div><p><b class="reltaskshd">Related tasks</b><br />
	<a href="../topics/taddglem.html" title="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 complex type definition.">Adding a global element</a><br />
	</p>
	</div>
	</body>
	</html>