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 <title>Adding a complex type</title>
 </head>
 <body id="taddcmxt"><a name="taddcmxt"><!-- --></a>

 <h1 class="topictitle1">Adding a complex type</h1>
 <div><p>A complex type allows elements in its content and may carry attributes.
 You can add as many complex types as you want to an XML schema.</p><div class="skipspace"><p></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 complex type to an XML schema, follow these steps:</p>
 </div>
 <ol><li class="skipspace"><span>Open your XML schema in the XML schema editor.</span></li>
 <li class="skipspace"><span>In the Outline view, select your schema.</span></li>
 <li class="skipspace"><span>In the Graph view, right click in the <b>Types</b> section and
 click <span class="uicontrol">Add Complex Type</span>.</span></li>
 <li class="skipspace"><span>In the Properties view, type a new name for the complex type in
 the <span class="uicontrol">Name</span> field.</span></li>
 <li class="skipspace"><span>Click the <span class="uicontrol">More</span> button to select a base type
 for your complex type.</span> You can either set a base type for your
 complex type, or you add a content model to it (which represents any data
 that may be contained inside an element), but you cannot do both. For more
 information about content models, refer to the related tasks.</li>
 <li class="skipspace"><span>Select <span class="uicontrol">restriction</span> or <span class="uicontrol">extension</span> from
 the <span class="uicontrol">Derived by</span> drop down list.</span></li>
 <li class="skipspace"><span>Click the <span class="uicontrol">Other</span> tab.</span> The following
 optional values can be specified in this page:<ol type="a"><li class="skipspace"><span>Select the appropriate value in the <span class="uicontrol">abstract</span> list.</span> When a complex type is declared abstract, it cannot be used in an instance
 document. Click <b>true</b> if you want the complex type to be abstract; otherwise,
 click <b>false</b>.</li>
 <li class="skipspace"><span>Select the appropriate value in the <span class="uicontrol">block</span> list.</span> If you select <b>#all</b>, the complex type may not be replaced by any
 derivations. If you select <b>extension</b>, the complex type may not be replaced
 by any type derived from it by extending it. If you select <b>restriction</b>,
 the complex type may not be replaced by any type derived from it by restricting
 it.</li>
 <li class="skipspace"><span> Select the appropriate value in the <span class="uicontrol">final</span> list.</span> If you select <b>#all</b>, the complex type may not be derived from
 at all. If you select <b>extension</b>, the complex type may not be derived
 from by extension. If you select <b>restriction</b>, the complex type may
 not be derived from by restriction.</li>
 <li class="skipspace"><span>Select the appropriate value in the <span class="uicontrol">mixed</span> list.</span> If you click <b>true</b>, the complex type can contain mixed content
 (both character data and other elements). If you click <b>false</b>, the complex
 type can only contain other elements.</li>
 </ol>
 </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 complex type.</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 complext type.</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/taddcmod.html" title="You can add a content model to an element, global element, a complex type, or a group. A content model is the representation of any data that may be contained inside the element, global element, complex type, or group.">Adding a content model</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 a complex type</title>
	</head>
	<body id="taddcmxt"><a name="taddcmxt"><!-- --></a>

	<h1 class="topictitle1">Adding a complex type</h1>
	<div><p>A complex type allows elements in its content and may carry attributes.
	You can add as many complex types as you want to an XML schema.</p><div class="skipspace"><p></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 complex type to an XML schema, follow these steps:</p>
	</div>
	<ol><li class="skipspace"><span>Open your XML schema in the XML schema editor.</span></li>
	<li class="skipspace"><span>In the Outline view, select your schema.</span></li>
	<li class="skipspace"><span>In the Graph view, right click in the <b>Types</b> section and
	click <span class="uicontrol">Add Complex Type</span>.</span></li>
	<li class="skipspace"><span>In the Properties view, type a new name for the complex type in
	the <span class="uicontrol">Name</span> field.</span></li>
	<li class="skipspace"><span>Click the <span class="uicontrol">More</span> button to select a base type
	for your complex type.</span> You can either set a base type for your
	complex type, or you add a content model to it (which represents any data
	that may be contained inside an element), but you cannot do both. For more
	information about content models, refer to the related tasks.</li>
	<li class="skipspace"><span>Select <span class="uicontrol">restriction</span> or <span class="uicontrol">extension</span> from
	the <span class="uicontrol">Derived by</span> drop down list.</span></li>
	<li class="skipspace"><span>Click the <span class="uicontrol">Other</span> tab.</span> The following
	optional values can be specified in this page:<ol type="a"><li class="skipspace"><span>Select the appropriate value in the <span class="uicontrol">abstract</span> list.</span> When a complex type is declared abstract, it cannot be used in an instance
	document. Click <b>true</b> if you want the complex type to be abstract; otherwise,
	click <b>false</b>.</li>
	<li class="skipspace"><span>Select the appropriate value in the <span class="uicontrol">block</span> list.</span> If you select <b>#all</b>, the complex type may not be replaced by any
	derivations. If you select <b>extension</b>, the complex type may not be replaced
	by any type derived from it by extending it. If you select <b>restriction</b>,
	the complex type may not be replaced by any type derived from it by restricting
	it.</li>
	<li class="skipspace"><span> Select the appropriate value in the <span class="uicontrol">final</span> list.</span> If you select <b>#all</b>, the complex type may not be derived from
	at all. If you select <b>extension</b>, the complex type may not be derived
	from by extension. If you select <b>restriction</b>, the complex type may
	not be derived from by restriction.</li>
	<li class="skipspace"><span>Select the appropriate value in the <span class="uicontrol">mixed</span> list.</span> If you click <b>true</b>, the complex type can contain mixed content
	(both character data and other elements). If you click <b>false</b>, the complex
	type can only contain other elements.</li>
	</ol>
	</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 complex type.</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 complext type.</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/taddcmod.html" title="You can add a content model to an element, global element, a complex type, or a group. A content model is the representation of any data that may be contained inside the element, global element, complex type, or group.">Adding a content model</a><br />
	</p>
	</div>
	</body>
	</html>