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QName
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<FONT SIZE="-1">
javax.xml.namespace</FONT>
<BR>
Class QName</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../resources/inherit.gif" ALT="extended by"><B>javax.xml.namespace.QName</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD>java.io.Serializable</DD>
</DL>
<HR>
<DL>
<DT>public class <B>QName</B><DT>extends java.lang.Object<DT>implements java.io.Serializable</DL>
<P>
<p><code>QName</code> represents a <strong>qualified name</strong>
as defined in the XML specifications: <a
href="http://www.w3.org/TR/xmlschema-2/#QName">XML Schema Part2:
Datatypes specification</a>, <a
href="http://www.w3.org/TR/REC-xml-names/#ns-qualnames">Namespaces
in XML</a>, <a
href="http://www.w3.org/XML/xml-names-19990114-errata">Namespaces
in XML Errata</a>.</p>
<p>The value of a <code>QName</code> contains a <strong>Namespace
URI</strong>, <strong>local part</strong> and
<strong>prefix</strong>.</p>
<p>The prefix is included in <code>QName</code> to retain lexical
information <strong><em>when present</em></strong> in an <A HREF="../../../javax/xml/transform/Source.html" title="interface in javax.xml.transform"><CODE>XML input source</CODE></A>. The prefix is
<strong><em>NOT</em></strong> used in <A HREF="../../../javax/xml/namespace/QName.html#equals(java.lang.Object)"><CODE>QName.equals(Object)</CODE></A> or to compute the <A HREF="../../../javax/xml/namespace/QName.html#hashCode()"><CODE>QName.hashCode()</CODE></A>. Equality and the hash code are defined using
<strong><em>only</em></strong> the Namespace URI and local part.</p>
<p>If not specified, the Namespace URI is set to <A HREF="../../../javax/xml/XMLConstants.html#NULL_NS_URI"><CODE>XMLConstants.NULL_NS_URI</CODE></A>.
If not specified, the prefix is set to <A HREF="../../../javax/xml/XMLConstants.html#DEFAULT_NS_PREFIX"><CODE>XMLConstants.DEFAULT_NS_PREFIX</CODE></A>.</p>
<p><code>QName</code> is immutable.</p>
<P>
<P>
<DL>
<DT><B>Since:</B></DT>
<DD>1.5</DD>
<DT><B>See Also:</B><DD><a href="http://www.w3.org/TR/xmlschema-2/#QName">XML Schema Part2: Datatypes specification</a>,
<a href="http://www.w3.org/TR/REC-xml-names/#ns-qualnames">Namespaces in XML</a>,
<a href="http://www.w3.org/XML/xml-names-19990114-errata">Namespaces in XML Errata</a>,
<A HREF="../../../serialized-form.html#javax.xml.namespace.QName">Serialized Form</A></DL>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../javax/xml/namespace/QName.html#QName(java.lang.String)">QName</A></B>(java.lang.String localPart)</CODE>
<BR>
<code>QName</code> constructor specifying the local part.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../javax/xml/namespace/QName.html#QName(java.lang.String, java.lang.String)">QName</A></B>(java.lang.String namespaceURI,
java.lang.String localPart)</CODE>
<BR>
<code>QName</code> constructor specifying the Namespace URI
and local part.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../javax/xml/namespace/QName.html#QName(java.lang.String, java.lang.String, java.lang.String)">QName</A></B>(java.lang.String namespaceURI,
java.lang.String localPart,
java.lang.String prefix)</CODE>
<BR>
<code>QName</code> constructor specifying the Namespace URI,
local part and prefix.</TD>
</TR>
</TABLE>
<!-- ========== METHOD SUMMARY =========== -->
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/xml/namespace/QName.html#equals(java.lang.Object)">equals</A></B>(java.lang.Object objectToTest)</CODE>
<BR>
Test this <code>QName</code> for equality with another
<code>Object</code>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/xml/namespace/QName.html#getLocalPart()">getLocalPart</A></B>()</CODE>
<BR>
Get the local part of this <code>QName</code>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/xml/namespace/QName.html#getNamespaceURI()">getNamespaceURI</A></B>()</CODE>
<BR>
Get the Namespace URI of this <code>QName</code>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/xml/namespace/QName.html#getPrefix()">getPrefix</A></B>()</CODE>
<BR>
Get the prefix of this <code>QName</code>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/xml/namespace/QName.html#hashCode()">hashCode</A></B>()</CODE>
<BR>
Generate the hash code for this <code>QName</code>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/xml/namespace/QName.html#toString()">toString</A></B>()</CODE>
<BR>
<code>String</code> representation of this
<code>QName</code>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static <A HREF="../../../javax/xml/namespace/QName.html" title="class in javax.xml.namespace">QName</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../javax/xml/namespace/QName.html#valueOf(java.lang.String)">valueOf</A></B>(java.lang.String qNameAsString)</CODE>
<BR>
<code>QName</code> derived from parsing the formatted
<code>String</code>.</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class java.lang.Object</B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>clone, finalize, getClass, notify, notifyAll, wait, wait, wait</CODE></TD>
</TR>
</TABLE>
<P>
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<B>Constructor Detail</B></FONT></TD>
</TR>
</TABLE>
<A NAME="QName(java.lang.String, java.lang.String)"><!-- --></A><H3>
QName</H3>
<PRE>
public <B>QName</B>(java.lang.String namespaceURI,
java.lang.String localPart)</PRE>
<DL>
<DD><p><code>QName</code> constructor specifying the Namespace URI
and local part.</p>
<p>If the Namespace URI is <code>null</code>, it is set to
<A HREF="../../../javax/xml/XMLConstants.html#NULL_NS_URI"><CODE>XMLConstants.NULL_NS_URI</CODE></A>. This value represents no
explicitly defined Namespace as defined by the <a
href="http://www.w3.org/TR/REC-xml-names/#ns-qualnames">Namespaces
in XML</a> specification. This action preserves compatible
behavior with QName 1.0. Explicitly providing the <A HREF="../../../javax/xml/XMLConstants.html#NULL_NS_URI"><CODE>XMLConstants.NULL_NS_URI</CODE></A> value is the preferred coding
style.</p>
<p>If the local part is <code>null</code> an
<code>IllegalArgumentException</code> is thrown.
A local part of "" is allowed to preserve
compatible behavior with QName 1.0. </p>
<p>When using this constructor, the prefix is set to <A HREF="../../../javax/xml/XMLConstants.html#DEFAULT_NS_PREFIX"><CODE>XMLConstants.DEFAULT_NS_PREFIX</CODE></A>.</p>
<p>The Namespace URI is not validated as a
<a href="http://www.ietf.org/rfc/rfc2396.txt">URI reference</a>.
The local part is not validated as a
<a href="http://www.w3.org/TR/REC-xml-names/#NT-NCName">NCName</a>
as specified in <a href="http://www.w3.org/TR/REC-xml-names/">Namespaces
in XML</a>.</p>
<P>
<DT><B>Parameters:</B><DD><CODE>namespaceURI</CODE> - Namespace URI of the <code>QName</code><DD><CODE>localPart</CODE> - local part of the <code>QName</code><DT><B>See Also:</B><DD><A HREF="../../../javax/xml/namespace/QName.html#QName(java.lang.String, java.lang.String, java.lang.String)"><CODE>QName(String namespaceURI, String localPart, String
prefix)</CODE></A></DL>
<HR>
<A NAME="QName(java.lang.String, java.lang.String, java.lang.String)"><!-- --></A><H3>
QName</H3>
<PRE>
public <B>QName</B>(java.lang.String namespaceURI,
java.lang.String localPart,
java.lang.String prefix)</PRE>
<DL>
<DD><p><code>QName</code> constructor specifying the Namespace URI,
local part and prefix.</p>
<p>If the Namespace URI is <code>null</code>, it is set to
<A HREF="../../../javax/xml/XMLConstants.html#NULL_NS_URI"><CODE>XMLConstants.NULL_NS_URI</CODE></A>. This value represents no
explicitly defined Namespace as defined by the <a
href="http://www.w3.org/TR/REC-xml-names/#ns-qualnames">Namespaces
in XML</a> specification. This action preserves compatible
behavior with QName 1.0. Explicitly providing the <A HREF="../../../javax/xml/XMLConstants.html#NULL_NS_URI"><CODE>XMLConstants.NULL_NS_URI</CODE></A> value is the preferred coding
style.</p>
<p>If the local part is <code>null</code> an
<code>IllegalArgumentException</code> is thrown.
A local part of "" is allowed to preserve
compatible behavior with QName 1.0. </p>
<p>If the prefix is <code>null</code>, an
<code>IllegalArgumentException</code> is thrown. Use <A HREF="../../../javax/xml/XMLConstants.html#DEFAULT_NS_PREFIX"><CODE>XMLConstants.DEFAULT_NS_PREFIX</CODE></A> to explicitly indicate that no
prefix is present or the prefix is not relevant.</p>
<p>The Namespace URI is not validated as a
<a href="http://www.ietf.org/rfc/rfc2396.txt">URI reference</a>.
The local part and prefix are not validated as a
<a href="http://www.w3.org/TR/REC-xml-names/#NT-NCName">NCName</a>
as specified in <a href="http://www.w3.org/TR/REC-xml-names/">Namespaces
in XML</a>.</p>
<P>
<DT><B>Parameters:</B><DD><CODE>namespaceURI</CODE> - Namespace URI of the <code>QName<code><DD><CODE>localPart</CODE> - local part of the <code>QName<code><DD><CODE>prefix</CODE> - prefix of the <code>QName<code></DL>
<HR>
<A NAME="QName(java.lang.String)"><!-- --></A><H3>
QName</H3>
<PRE>
public <B>QName</B>(java.lang.String localPart)</PRE>
<DL>
<DD><p><code>QName</code> constructor specifying the local part.</p>
<p>If the local part is <code>null</code> an
<code>IllegalArgumentException</code> is thrown.
A local part of "" is allowed to preserve
compatible behavior with QName 1.0. </p>
<p>When using this constructor, the Namespace URI is set to
<A HREF="../../../javax/xml/XMLConstants.html#NULL_NS_URI"><CODE>XMLConstants.NULL_NS_URI</CODE></A> and the prefix is set to <A HREF="../../../javax/xml/XMLConstants.html#DEFAULT_NS_PREFIX"><CODE>XMLConstants.DEFAULT_NS_PREFIX</CODE></A>.</p>
<p><em>In an XML context, all Element and Attribute names exist
in the context of a Namespace. Making this explicit during the
construction of a <code>QName</code> helps prevent hard to
diagnosis XML validity errors. The constructors <A HREF="../../../javax/xml/namespace/QName.html#QName(java.lang.String, java.lang.String)"><CODE>QName(String
namespaceURI, String localPart)</CODE></A> and
<A HREF="../../../javax/xml/namespace/QName.html#QName(java.lang.String, java.lang.String, java.lang.String)"><CODE>QName(String namespaceURI, String localPart, String prefix)</CODE></A>
are preferred.</em></p>
<p>The local part is not validated as a
<a href="http://www.w3.org/TR/REC-xml-names/#NT-NCName">NCName</a>
as specified in <a href="http://www.w3.org/TR/REC-xml-names/">Namespaces
in XML</a>.</p>
<P>
<DT><B>Parameters:</B><DD><CODE>localPart</CODE> - local part of the <code>QName</code><DT><B>See Also:</B><DD><A HREF="../../../javax/xml/namespace/QName.html#QName(java.lang.String, java.lang.String)"><CODE>QName(String
namespaceURI, String localPart)</CODE></A>,
<A HREF="../../../javax/xml/namespace/QName.html#QName(java.lang.String, java.lang.String, java.lang.String)"><CODE>QName(String namespaceURI, String localPart, String
prefix)</CODE></A></DL>
<!-- ============ METHOD DETAIL ========== -->
<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Method Detail</B></FONT></TD>
</TR>
</TABLE>
<A NAME="getNamespaceURI()"><!-- --></A><H3>
getNamespaceURI</H3>
<PRE>
public java.lang.String <B>getNamespaceURI</B>()</PRE>
<DL>
<DD><p>Get the Namespace URI of this <code>QName</code>.</p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>Namespace URI of this <code>QName</code></DL>
</DD>
</DL>
<HR>
<A NAME="getLocalPart()"><!-- --></A><H3>
getLocalPart</H3>
<PRE>
public java.lang.String <B>getLocalPart</B>()</PRE>
<DL>
<DD><p>Get the local part of this <code>QName</code>.</p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>local part of this <code>QName</code></DL>
</DD>
</DL>
<HR>
<A NAME="getPrefix()"><!-- --></A><H3>
getPrefix</H3>
<PRE>
public java.lang.String <B>getPrefix</B>()</PRE>
<DL>
<DD><p>Get the prefix of this <code>QName</code>.</p>
<p>The prefix assigned to a <code>QName</code> might
<strong><em>NOT</em></strong> be valid in a different
context. For example, a <code>QName</code> may be assigned a
prefix in the context of parsing a document but that prefix may
be invalid in the context of a different document.</p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>prefix of this <code>QName</code></DL>
</DD>
</DL>
<HR>
<A NAME="equals(java.lang.Object)"><!-- --></A><H3>
equals</H3>
<PRE>
public final boolean <B>equals</B>(java.lang.Object objectToTest)</PRE>
<DL>
<DD><p>Test this <code>QName</code> for equality with another
<code>Object</code>.</p>
<p>If the <code>Object</code> to be tested is not a
<code>QName</code> or is <code>null</code>, then this method
returns <code>false</code>.</p>
<p>Two <code>QName</code>s are considered equal if and only if
both the Namespace URI and local part are equal. This method
uses <code>String.equals()</code> to check equality of the
Namespace URI and local part. The prefix is
<strong><em>NOT</em></strong> used to determine equality.</p>
<p>This method satisfies the general contract of <CODE>Object.equals(Object)</CODE></p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>objectToTest</CODE> - the <code>Object</code> to test for
equality with this <code>QName</code>
<DT><B>Returns:</B><DD><code>true</code> if the given <code>Object</code> is
equal to this <code>QName</code> else <code>false</code></DL>
</DD>
</DL>
<HR>
<A NAME="hashCode()"><!-- --></A><H3>
hashCode</H3>
<PRE>
public final int <B>hashCode</B>()</PRE>
<DL>
<DD><p>Generate the hash code for this <code>QName</code>.</p>
<p>The hash code is calculated using both the Namespace URI and
the local part of the <code>QName</code>. The prefix is
<strong><em>NOT</em></strong> used to calculate the hash
code.</p>
<p>This method satisfies the general contract of <CODE>Object.hashCode()</CODE>.</p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>hash code for this <code>QName</code> <code>Object</code></DL>
</DD>
</DL>
<HR>
<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public java.lang.String <B>toString</B>()</PRE>
<DL>
<DD><p><code>String</code> representation of this
<code>QName</code>.</p>
<p>The commonly accepted way of representing a <code>QName</code>
as a <code>String</code> was <a href="http://jclark.com/xml/xmlns.htm">defined</a>
by James Clark. Although this is not a <em>standard</em>
specification, it is in common use, e.g. <A HREF="../../../javax/xml/transform/Transformer.html#setParameter(java.lang.String, java.lang.Object)"><CODE>Transformer.setParameter(String name, Object value)</CODE></A>.
This implementation represents a <code>QName</code> as:
"{" + Namespace URI + "}" + local part. If the Namespace URI
<code>.equals(XMLConstants.NULL_NS_URI)</code>, only the
local part is returned. An appropriate use of this method is
for debugging or logging for human consumption.</p>
<p>Note the prefix value is <strong><em>NOT</em></strong>
returned as part of the <code>String</code> representation.</p>
<p>This method satisfies the general contract of <CODE>Object.toString()</CODE>.</p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD><code>String</code> representation of this <code>QName</code></DL>
</DD>
</DL>
<HR>
<A NAME="valueOf(java.lang.String)"><!-- --></A><H3>
valueOf</H3>
<PRE>
public static <A HREF="../../../javax/xml/namespace/QName.html" title="class in javax.xml.namespace">QName</A> <B>valueOf</B>(java.lang.String qNameAsString)</PRE>
<DL>
<DD><p><code>QName</code> derived from parsing the formatted
<code>String</code>.</p>
<p>If the <code>String</code> is <code>null</code> or does not conform to
<A HREF="../../../javax/xml/namespace/QName.html#toString()"><CODE>QName.toString()</CODE></A> formatting, an
<code>IllegalArgumentException</code> is thrown.</p>
<p><em>The <code>String</code> <strong>MUST</strong> be in the
form returned by <A HREF="../../../javax/xml/namespace/QName.html#toString()"><CODE>QName.toString()</CODE></A>.</em></p>
<p>The commonly accepted way of representing a <code>QName</code>
as a <code>String</code> was <a href="http://jclark.com/xml/xmlns.htm">defined</a>
by James Clark. Although this is not a <em>standard</em>
specification, it is in common use, e.g. <A HREF="../../../javax/xml/transform/Transformer.html#setParameter(java.lang.String, java.lang.Object)"><CODE>Transformer.setParameter(String name, Object value)</CODE></A>.
This implementation parses a <code>String</code> formatted
as: "{" + Namespace URI + "}" + local part. If the Namespace
URI <code>.equals(XMLConstants.NULL_NS_URI)</code>, only the
local part should be provided.</p>
<p>The prefix value <strong><em>CANNOT</em></strong> be
represented in the <code>String</code> and will be set to
<A HREF="../../../javax/xml/XMLConstants.html#DEFAULT_NS_PREFIX"><CODE>XMLConstants.DEFAULT_NS_PREFIX</CODE></A>.</p>
<p>This method does not do full validation of the resulting
<code>QName</code>.
<p>The Namespace URI is not validated as a
<a href="http://www.ietf.org/rfc/rfc2396.txt">URI reference</a>.
The local part is not validated as a
<a href="http://www.w3.org/TR/REC-xml-names/#NT-NCName">NCName</a>
as specified in
<a href="http://www.w3.org/TR/REC-xml-names/">Namespaces in XML</a>.</p>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>qNameAsString</CODE> - <code>String</code> representation
of the <code>QName</code>
<DT><B>Returns:</B><DD><code>QName</code> corresponding to the given <code>String</code><DT><B>See Also:</B><DD><A HREF="../../../javax/xml/namespace/QName.html#toString()"><CODE>QName.toString()</CODE></A></DL>
</DD>
</DL>
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