docs/org.eclipse.wst.xsdeditor.doc.user/topics/taddcmxt.dita

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<task id="taddcmxt" xml:lang="en-us">
<title>Adding complex types</title>
<titlealts>
<searchtitle>Adding complex types</searchtitle>
</titlealts>
<shortdesc>A complex type allows elements in its content and can carry attributes.
Complex types can be used to help determine the appropriate content for any
instance documents generated from or associated with your XML schema.</shortdesc>
<prolog><metadata>
<keywords><indexterm>XML schema editor<indexterm>adding<indexterm>complex
types</indexterm></indexterm></indexterm><indexterm>XML schema editor<indexterm>complex
types<indexterm>adding</indexterm></indexterm></indexterm><indexterm>XML schema
files<indexterm>adding<indexterm>complex types</indexterm></indexterm></indexterm>
<indexterm>XML schema files<indexterm>complex types<indexterm>adding</indexterm></indexterm></indexterm>
</keywords>
</metadata></prolog>
<taskbody>
<context><p>You can add as many complex types as you want to an XML schema.</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></context>
<steps>
<step><cmd>Open your XML schema in the XML schema editor.</cmd></step>
<step><cmd>Right-click the Types category in the Graph view, and click <uicontrol>Add
Complex Type</uicontrol>.</cmd></step>
<step><cmd>In the Properties view, type a new name for the complex type in
the <uicontrol>Name</uicontrol> field.</cmd></step>
<step><cmd>Click the <uicontrol>Browse</uicontrol> <image href="../images/Browse.gif">
<alt>Browse icon</alt></image> button to select a base type for your complex
type.</cmd><info>You can either set a base type for your complex type, or
you can add a content model to it (which represents any data that can be contained
inside an element), but you cannot do both. For more information about content
models, refer to the related tasks.</info></step>
<step><cmd>Select <uicontrol>restriction</uicontrol> or <uicontrol>extension</uicontrol> from
the <uicontrol>Inherited by</uicontrol> list.</cmd><info>This specifies whether
your type is derived from its base type by restriction or extension.</info>
</step>
<step><cmd>The Graph view will display the attributes within the complex type.</cmd>
<info>You can also use this view to add attributes to your complex type. An
attribute associates an attribute name with a specific type and value.</info>
<substeps>
<substep><cmd>To add an attribute, in the graph view, right click your complex
type and select <uicontrol>Add Attribute</uicontrol>.</cmd></substep>
</substeps>
<choices>
<choice><uicontrol>name</uicontrol>. In the Graph view, click the name of
the attribute to make a change.</choice>
<choice><uicontrol>type</uicontrol>. In the Graph view, click the type of
the attribute to make a change. The drop-down menu provides commonly used
types. For more options, simply select <uicontrol>Browse</uicontrol> from
the menu.</choice>
</choices>
</step>
<step><cmd>An attribute reference provides a reference to a global attribute.
To add an attribute reference, in the Graph view, right-click the complex
type containing the element, and click <uicontrol>Add Attribute Ref</uicontrol>.</cmd>
<info>A declaration that references a global attribute enables the referenced
attribute to appear in the instance document in the context of the referencing
declaration. </info>
<substeps>
<substep><cmd>Select the reference, then select the attribute group you want
it to reference in the Properties view, from the<uicontrol>Ref</uicontrol> menu.</cmd>
</substep>
</substeps>
</step>
<step><cmd>An attribute group reference provides a reference to an attribute
group. To add an attribute group reference, in the Graph view, right-click
the complex type containing the element, and click <uicontrol>Add Attribute
Group Ref</uicontrol>.</cmd><info>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.</info>
<substeps>
<substep><cmd>Select the reference, then select the attribute group you want
it to reference in the Properties view, from the<uicontrol>Ref</uicontrol> menu.</cmd>
</substep>
</substeps>
</step>
<step><cmd>An <codeph>any</codeph> element enables element content according
to namespaces, and the corresponding <codeph>any</codeph> attribute element
enables attributes to appear in elements. To add an <codeph>any</codeph> attribute,
right-click in the complex type header, and click <uicontrol>Add Any Attribute</uicontrol>.</cmd>
<info>You can specify the following values for an <codeph>any</codeph> attribute:</info>
<choices>
<choice>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). </choice>
<choice>For a <uicontrol>processContents</uicontrol> 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).</choice>
</choices>
<info></info></step>
<step><cmd>Click the <uicontrol>Documentation</uicontrol> tab if you want
to provide any information about this complex type.</cmd><info>The <uicontrol>Documentation</uicontrol> page
is used for human readable material, such as a description, and the <uicontrol>App
Info</uicontrol> page can be used to provide information for applications.</info>
</step>
</steps>
</taskbody>
</task>