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  </table><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td><font color="#006699" face="Verdana, sans-serif" size="-1"><a href="http://www.ibm.com/developer/">IBM developerWorks</a> : <a href="http://www.ibm.com/developer/xml/">XML</a> : <a href="http://www-106.ibm.com/developerworks/views/xml/tutorials.jsp">Education - Tutorials</a></font><br><img src="imagemaster/masthead.jpg" alt="XML Schema Infoset Model, Part 2"></td><td width="*" valign="bottom" align="right"><a border="0" href="os-schema2.zip"><img alt="ZIP" border="0" src="../default/i/icon-zip.gif"></a><a border="0" href="os-schema2-ltr.pdf"><img alt="PDF (letter)" border="0" src="../default/i/icon-pdf-ltr.gif"></a><a border="0" href="os-schema2-a4.pdf"><img alt="PDF (A4)" border="0" src="../default/i/icon-pdf-a4.gif"></a><a href="javascript:newWindow()" border="0"><img alt="e-mail" border="0" src="../default/i/icon-email.gif"></a></td></tr><tr><td height="2" colspan="2"><img height="2" width="1" src="../default/i/c.gif"></td></tr></table><table border="0" cellpadding="0" cellspacing="0" width="100%"><tr><td width="150" height="1" bgcolor="#000000" colspan="6"><img alt="" height="1" width="150" src="../default/i/c.gif"></td></tr><tr><td background="../default/i/sw-gold.gif"><a border="0" href="index.html" onMouseOver="iOver('topmain'); iOver('bottommain'); self.status=mainblurb; return true;" onMouseOut="iOut('topmain'); iOut('bottommain'); self.status=''; return true;"><img alt="Main menu" border="0" src="../default/i/main.gif" name="topmain"></a></td><td background="../default/i/sw-gold.gif"><a border="0" onMouseOver="iOver('topsection'); iOver('bottomsection'); self.status=sectionblurb; return true;" onMouseOut="iOut('topsection'); iOut('bottomsection'); self.status=''; return true;" href="index6.html"><img alt="Section menu" border="0" src="../default/i/section.gif" name="topsection"></a></td><td background="../default/i/sw-gold.gif"><a border="0" onMouseOver="iOver('topfeedback'); iOver('bottomfeedback'); self.status=feedbackblurb; return true;" onMouseOut="iOut('topfeedback'); iOut('bottomfeedback'); self.status=''; return true;" href="os-schema2-9-3.html"><img alt="Feedback" border="0" src="../default/i/feedback.gif" name="topfeedback"></a></td><td width="100%" background="../default/i/sw-gold.gif"><img src="../default/i/c.gif"></td><td background="../default/i/sw-gold.gif"><a border="0" onMouseOver="iOver('topprevious'); iOver('bottomprevious'); self.status=previousblurb; return true;" onMouseOut="iOut('topprevious'); iOut('bottomprevious'); self.status=''; return true;" href="os-schema2-6-4.html"><img alt="Previous" border="0" src="../default/i/previous.gif" name="topprevious"></a></td><td background="../default/i/sw-gold.gif"><a border="0" onMouseOver="iOver('topnext'); iOver('bottomnext'); self.status=nextblurb; return true;" onMouseOut="iOut('topnext'); iOut('bottomnext'); self.status=''; return true;" href="os-schema2-6-6.html"><img alt="Next" border="0" src="../default/i/next.gif" name="topnext"></a></td></tr></table><table bgcolor="ffffff" cellspacing="0" cellpadding="2" border="0" height="400" width="100%"><tr valign="bottom"><td height="25" colspan="4"><img border="0" height="25" width="562" src="imagemaster/titlebar6.jpg" alt="6. Elements and attributes"></td></tr><tr><td bgcolor="ffffff" width="15">&nbsp;</td><td bgcolor="ffffff" width="12">&nbsp;</td><td valign="top" align="left" bgcolor="ffffff" width="*"><p><br><table cellspacing="0" cellpadding="0" border="0"><tr><td width="90%"><font size="4" face="Verdana, Arial, sans-serif"><b>Exercise 6: Create a global attribute group, global attribute, local
attribute, and attribute reference</b></font></td><td width="200" align="right"><font size="1" face="Verdana, Arial, sans-serif"><nobr>    page 5 of 6</nobr></font></td></tr></table><br><br></p><font size="2" face="Verdana, Arial, sans-serif"><p>Using the XML Schema Infoset Model APIs and adding on to the schema
created in <a href="os-schema2-6-2.html">Exercise 5: Create a global, local, and element reference</a>, create
                                        the following schema document:</p><pre><font size="2" face="Courier New">
&lt;?xml version="1.0"?&gt;
&lt;schema
  targetNamespace="http://www.eclipse.org/xsd/examples/po"
  xmlns="http://www.w3.org/2001/XMLSchema"
  xmlns:po="http://www.eclipse.org/xsd/examples/po"&gt;
 
  &lt;simpleType name="USState"&gt;
    &lt;restriction base="string"&gt;
      &lt;enumeration value="AK"/&gt;
      &lt;enumeration value="AL"/&gt;
      &lt;enumeration value="AR"/&gt;
    &lt;/restriction&gt;
  &lt;/simpleType&gt;
   
  &lt;simpleType&gt;
    &lt;list itemType="po:USState"/&gt;
  &lt;/simpleType&gt;
   
  &lt;complexType name="PurchaseOrderType"&gt;
    &lt;sequence&gt;
      &lt;element minOccurs="0" name="state" type="po:USState"/&gt;
      &lt;element ref="po:notes"/&gt;
    &lt;/sequence&gt;
    &lt;attribute name="color" type="string"/&gt;
    &lt;attribute ref="po:lang"/&gt;
    &lt;attributeGroup ref="po:shapeAttributes"/&gt;
  &lt;/complexType&gt;
   
  &lt;element name="notes" type="string"/&gt;
   
  &lt;attributeGroup name="shapeAttributes"&gt;
    &lt;attribute name="size" type="string" use="optional"/&gt;
    &lt;attribute name="length" type="int"/&gt;
  &lt;/attributeGroup&gt;
   
  &lt;attribute name="lang" type="string"/&gt;
   
&lt;/schema&gt;
                                </font></pre><p><b>Hint:</b> You will need to create an
org.eclipse.xsd.XSDAttributeUse for the local attribute and attribute reference.</p><p>
                                                <b>New constructs created in this exercise:</b>
                                                <ul><li>&lt;attributeGroup&gt; - Global attribute group
with name="shapeAttributes"</li><li>&lt;attributeGroup&gt; - Attribute group reference
with ref="po:shapeAttributes"</li><li>&lt;attribute&gt; - Local attribute with
name="size", type="string" and use="required"</li><li>&lt;attribute&gt; - Local attribute with
name="length", type="int" and use="optional"</li><li>&lt;attribute&gt; - Local attribute with
name="color", type="string"</li><li>&lt;attribute&gt; - Global attribute with
name="lang", type="string"</li><li>&lt;attribute&gt; - Attribute reference with
ref="po:lang"</li></ul>
                                                <b>Solution:</b>
                                                <a href="os-schema2-6-6.html">Exercise 6 solution</a>
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