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<title>Java Types for XML Schema</title>
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<h1> XMLBeans Support for Built-In Schema Types</h1>
<p>Just as with types in XML schema, the XMLBeans types based on schema are arranged
in a hierarchy. In general, the hierarchy of XMLBean types mirrors the hierarchy
of the schema types themselves. XML schema types all inherit from <span class="langinline">xs:anyType</span>
(which is at the root of the hierarchy); XMLBeans types inherit from <span class="langinline">XmlObject</span>.</p>
<p>In XML schema, <span class="langinline">xs:anyType</span> is the root type
for two type categories: built-in and user-derived. Built-in schema types are
common types defined by the XML schema specification. User-derived types are
those you define in your schema. This topic lists the built-in types provided
with XMLBeans. For information about user-derived types and the Java types generated
from them, see <a href="conJavaTypesGeneratedFromUserDerived.html">Java Types Generated
from User-Derived Schema Types</a>.</p>
<p>The following figure illustrates the hierarchy of types, showing both built-in
schema types and their XMLBeans parallels. Notice, too, that nearly all of the
built-in types are also available as natural Java types.</p>
<p><img src="../images/conXMLTypeHierarchy.gif" width="865" height="887"> </p>
<h1>Java Types Representing Built-In Schema Types</h1>
<p>As you can see from the figure above, all 46 built-in schema types are represented
by an XMLBean type provided with XMLBeans. When using built-in XMLBean types,
keep in mind that:</p>
<ul>
<li> Since <span class="langinline">XmlObject</span> corresponds to the <span class="langinline">xs:anyType</span>,
all Java XMLBean types inherit from <span class="langinline">XmlObject</span>.
Therefore all XMLBean types share the <span class="langinline">XmlObject</span>
interface’s ability to create an <span class="langinline">XmlCursor</span>
at the position of the object. They can also render the XML as strings or
streams.
<li>
<div>Where there is a corresponding natural Java type, the XMLBeans type provides
a way to get the underlying XML's value as the natural type. See the table
in this topic for information on how natural Java types map to XMLBeans
types. </div>
<li> Values assigned to built-in XMLBeans types are validated in keeping with
the rules of the schema type they represent. So, for example, an attempt to
assign a negative integer value to an <span class="langinline">XmlPositiveInteger</span>
will throw an <span class="langinline">XmlValueOutOfRange</span> exception.</li>
</ul>
<div>
<p>The following table lists the built-in schema types, along with their XMLBeans
and natural Java parallels. Unless otherwise noted, natural Java types are
in the <span class="langinline">java.lang</span> package; XMLBean types are
in the <span class="langinline">org.apache.xmlbeans</span> package.</p>
</div>
<div id="topictext">
<table>
<tr>
<td width="30%"><strong>Built-In Schema Type</strong></td>
<td width="31%"><strong>XMLBean Type</strong></td>
<td width="39%"><strong>Natural Java Type</strong></td>
</tr>
<tr>
<td>xs:anyType</td>
<td><a href="../reference/org/apache/xmlbeans/XmlObject.html">XmlObject</a></td>
<td> <a href="../reference/org/apache/xmlbeans/XmlObject.html">org.apache.xmlbeans.XmlObject</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#dt-anySimpleType" target="_blank">xs:anySimpleType</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlAnySimpleType.html">XmlAnySimpleType</a></td>
<td> <a href="http://java.sun.com/j2se/1.4.1/docs/api/java/lang/String.html" target="_blank">String</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#anyURI" target="_blank">xs:anyURI</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlAnyURI.html">XmlAnyURI</a></td>
<td><a href="http://java.sun.com/j2se/1.4.1/docs/api/java/lang/String.html" target="_blank">String</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#base64Binary" target="_blank">xs:base64Binary</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlBase64Binary.html">XmlBase64Binary</a></td>
<td>byte[]</td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#boolean" target="_blank">xs:boolean</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlBoolean.html">XmlBoolean</a></td>
<td>boolean</td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#byte" target="_blank">xs:byte</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlByte.html">XmlByte</a></td>
<td>byte</td>
</tr>
<tr>
<td height="17"><a href="http://www.w3.org/TR/xmlschema-2/#date" target="_blank">xs:date</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlDate.html">XmlDate</a></td>
<td><a href="http://java.sun.com/j2se/1.4.2/docs/api/java/util/Calendar.html" target="_blank">java.util.Calendar</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#dateTime" target="_blank">xs:dateTime</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlDateTime.html">XmlDateTime</a></td>
<td><a href="http://java.sun.com/j2se/1.4.2/docs/api/java/util/Calendar.html" target="_blank">java.util.Calendar</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#decimal" target="_blank">xs:decimal</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlDecimal.html">XmlDecimal</a></td>
<td><a href="http://java.sun.com/j2se/1.4.2/docs/api/java/math/BigDecimal.html" target="_blank">java.math.BigDecimal</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#double" target="_blank">xs:double</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlDouble.html">XmlDouble</a></td>
<td>double</td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#duration" target="_blank">xs:duration</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlDuration.html">XmlDuration</a></td>
<td><a href="../reference/org/apache/xmlbeans/GDuration.html">org.apache.xmlbeans.GDuration</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#ENTITIES" target="_blank">xs:ENTITIES</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlENTITIES.html">XmlENTITIES</a></td>
<td><a href="http://java.sun.com/j2se/1.4.1/docs/api/java/lang/String.html" target="_blank">String</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#ENTITY" target="_blank">xs:ENTITY</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlENTITY.html">XmlENTITY</a></td>
<td><a href="http://java.sun.com/j2se/1.4.1/docs/api/java/lang/String.html" target="_blank">String</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#float" target="_blank">xs:float</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlFloat.html">XmlFloat</a></td>
<td>float</td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#gDay" target="_blank">xs:gDay</a></td>
<td><p><a href="../reference/org/apache/xmlbeans/XmlGDay.html">XmlGDay</a></p></td>
<td><a href="http://java.sun.com/j2se/1.4.2/docs/api/java/util/Calendar.html" target="_blank">java.util.Calendar</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#gMonth" target="_blank">xs:gMonth</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlGMonth.html">XmlGMonth</a></td>
<td><a href="http://java.sun.com/j2se/1.4.2/docs/api/java/util/Calendar.html" target="_blank">java.util.Calendar</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#gMonthDay" target="_blank">xs:gMonthDay</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlGMonthDay.html">XmlGMonthDay</a></td>
<td><a href="http://java.sun.com/j2se/1.4.2/docs/api/java/util/Calendar.html" target="_blank">java.util.Calendar</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#gYear" target="_blank">xs:gYear</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlGYear.html">XmlGYear</a></td>
<td><a href="http://java.sun.com/j2se/1.4.2/docs/api/java/util/Calendar.html" target="_blank">java.util.Calendar</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#gYearMonth" target="_blank">xs:gYearMonth</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlGYearMonth.html">XmlGYearMonth</a></td>
<td><a href="http://java.sun.com/j2se/1.4.2/docs/api/java/util/Calendar.html" target="_blank">java.util.Calendar</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#hexBinary" target="_blank">xs:hexBinary</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlHexBinary.html">XmlHexBinary</a></td>
<td>byte[]</td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#ID" target="_blank">xs:ID</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlID.html">XmlID</a></td>
<td><a href="http://java.sun.com/j2se/1.4.1/docs/api/java/lang/String.html" target="_blank">String</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#IDREF" target="_blank">xs:IDREF</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlIDREF.html">XmlIDREF</a></td>
<td><a href="http://java.sun.com/j2se/1.4.1/docs/api/java/lang/String.html" target="_blank">String</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#IDREFS" target="_blank">xs:IDREFS</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlIDREFS.html">XmlIDREFS</a></td>
<td><a href="http://java.sun.com/j2se/1.4.1/docs/api/java/lang/String.html" target="_blank">String</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#int" target="_blank">xs:int</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlInt.html">XmlInt</a></td>
<td>int</td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#integer" target="_blank">xs:integer</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlInteger.html">XmlInteger</a></td>
<td><a href="http://java.sun.com/j2se/1.4.2/docs/api/java/math/BigInteger.html" target="_blank">java.math.BigInteger</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#language" target="_blank">xs:language</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlLanguage.html">XmlLanguage</a></td>
<td><a href="http://java.sun.com/j2se/1.4.1/docs/api/java/lang/String.html" target="_blank">String</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#long" target="_blank">xs:long</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlLong.html">XmlLong</a></td>
<td>long</td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#Name" target="_blank">xs:Name</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlName.html">XmlName</a></td>
<td><a href="http://java.sun.com/j2se/1.4.1/docs/api/java/lang/String.html" target="_blank">String</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#NCName" target="_blank">xs:NCName</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlNCName.html">XmlNCNAME</a></td>
<td><a href="http://java.sun.com/j2se/1.4.1/docs/api/java/lang/String.html" target="_blank">String</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#negativeInteger" target="_blank">xs:negativeInteger</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlNegativeInteger.html">XmlNegativeInteger</a></td>
<td><a href="http://java.sun.com/j2se/1.4.2/docs/api/java/math/BigInteger.html" target="_blank">java.math.BigInteger</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#NMTOKEN" target="_blank">xs:NMTOKEN</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlNMTOKEN.html">XmlNMTOKEN</a></td>
<td><a href="http://java.sun.com/j2se/1.4.1/docs/api/java/lang/String.html" target="_blank">String</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#NMTOKENS" target="_blank">xs:NMTOKENS</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlNMTOKENS.html">XmlNMTOKENS</a></td>
<td><a href="http://java.sun.com/j2se/1.4.1/docs/api/java/lang/String.html" target="_blank">String</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#nonNegativeInteger" target="_blank">xs:nonNegativeInteger</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlNonNegativeInteger.html">XmlNonNegativeInteger</a></td>
<td><a href="http://java.sun.com/j2se/1.4.2/docs/api/java/math/BigInteger.html" target="_blank">java.math.BigInteger</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#nonPositiveInteger" target="_blank">xs:nonPositiveInteger</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlNonPositiveInteger.html">XmlNonPositiveInteger</a></td>
<td><a href="http://java.sun.com/j2se/1.4.2/docs/api/java/math/BigInteger.html" target="_blank">java.math.BigInteger</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#normalizedString" target="_blank">xs:normalizedString</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlNormalizedString.html">XmlNormalizedString</a></td>
<td><a href="http://java.sun.com/j2se/1.4.1/docs/api/java/lang/String.html" target="_blank">String</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#NOTATION" target="_blank">xs:NOTATION</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlNOTATION.html">XmlNOTATION</a></td>
<td> Not supported</td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#positiveInteger" target="_blank">xs:positiveInteger</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlPositiveInteger.html">XmlPositiveInteger</a></td>
<td><a href="http://java.sun.com/j2se/1.4.2/docs/api/java/math/BigInteger.html" target="_blank">java.math.BigInteger</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#QName" target="_blank">xs:QName</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlQName.html">XmlQName</a></td>
<td><a href="http://java.sun.com/j2ee/1.4/docs/api/javax/xml/namespace/QName.html" target="_blank">javax.xml.namespace.QName</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#short" target="_blank">xs:short</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlShort.html">XmlShort</a></td>
<td>short</td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#string" target="_blank">xs:string</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlString.html">XmlString</a></td>
<td><a href="http://java.sun.com/j2se/1.4.1/docs/api/java/lang/String.html" target="_blank">String</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#time" target="_blank">xs:time</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlTime.html">XmlTime</a></td>
<td><a href="http://java.sun.com/j2se/1.4.2/docs/api/java/util/Calendar.html" target="_blank">java.util.Calendar</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#token" target="_blank">xs:token</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlToken.html">XmlToken</a></td>
<td><a href="http://java.sun.com/j2se/1.4.1/docs/api/java/lang/String.html" target="_blank">String</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#unsignedByte" target="_blank">xs:unsignedByte</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlUnsignedByte.html">XmlUnsignedByte</a></td>
<td>short</td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#unsignedInt" target="_blank">xs:unsignedInt</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlUnsignedInt.html">XmlUnsignedInt</a></td>
<td>long</td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#unsignedLong" target="_blank">xs:unsignedLong</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlUnsignedLong.html">XmlUnsignedLong</a></td>
<td><a href="http://java.sun.com/j2se/1.4.2/docs/api/java/math/BigInteger.html" target="_blank">java.math.BigInteger</a></td>
</tr>
<tr>
<td><a href="http://www.w3.org/TR/xmlschema-2/#unsignedShort" target="_blank">xs:unsignedShort</a></td>
<td><a href="../reference/org/apache/xmlbeans/XmlUnsignedShort.html">XmlUnsignedShort</a></td>
<td>int</td>
</tr>
</table>
</div>
<div>
<p class="relatedtopics">Related Topics</p>
<p><a href="conGettingStartedwithXMLBeans.html">Getting Started with XMLBeans</a></p>
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