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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN""http://www.w3.org/TR/REC-html40/frameset.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Wed Oct 31 22:26:28 PST 2001 --><TITLE>Java API for XML Processing Specification 1.1: Class NamespaceSupport</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"></HEAD><BODY BGCOLOR="white"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD 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<A HREF="../../../../org/xml/sax/helpers/ParserAdapter.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="NamespaceSupport.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">org.xml.sax.helpers</FONT><BR>Class NamespaceSupport</H2><PRE>java.lang.Object | +--<B>org.xml.sax.helpers.NamespaceSupport</B></PRE><HR><DL><DT>public class <B>NamespaceSupport</B><DT>extends java.lang.Object</DL><P>Encapsulate Namespace logic for use by SAX drivers. <blockquote> <em>This module, both source code and documentation, is in the Public Domain, and comes with <strong>NO WARRANTY</strong>.</em> </blockquote> <p>This class encapsulates the logic of Namespace processing: it tracks the declarations currently in force for each context and automatically processes qualified XML 1.0 names into their Namespace parts; it can also be used in reverse for generating XML 1.0 from Namespaces.</p> <p>Namespace support objects are reusable, but the reset method must be invoked between each session.</p> <p>Here is a simple session:</p> <pre> String parts[] = new String[3]; NamespaceSupport support = new NamespaceSupport(); support.pushContext(); support.declarePrefix("", "http://www.w3.org/1999/xhtml"); support.declarePrefix("dc", "http://www.purl.org/dc#"); String parts[] = support.processName("p", parts, false); System.out.println("Namespace URI: " + parts[0]); System.out.println("Local name: " + parts[1]); System.out.println("Raw name: " + parts[2]); String parts[] = support.processName("dc:title", parts, false); System.out.println("Namespace URI: " + parts[0]); System.out.println("Local name: " + parts[1]); System.out.println("Raw name: " + parts[2]); support.popContext(); </pre> <p>Note that this class is optimized for the use case where most elements do not contain Namespace declarations: if the same prefix/URI mapping is repeated for each context (for example), this class will be somewhat less efficient.</p><P><DL><DT><B>Since: </B><DD>SAX 2.0</DD><DT><B>Version: </B><DD>2.0r2pre</DD><DT><B>Author: </B><DD>David Megginson, <a href="mailto:sax@megginson.com">sax@megginson.com</a></DD></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Field Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/xml/sax/helpers/NamespaceSupport.html#XMLNS">XMLNS</A></B></CODE><BR> The XML Namespace as a constant.</TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../org/xml/sax/helpers/NamespaceSupport.html#NamespaceSupport()">NamespaceSupport</A></B>()</CODE><BR> Create a new Namespace support object.</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/xml/sax/helpers/NamespaceSupport.html#declarePrefix(java.lang.String, java.lang.String)">declarePrefix</A></B>(java.lang.String prefix, java.lang.String uri)</CODE><BR> Declare a Namespace prefix.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.util.Enumeration</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/xml/sax/helpers/NamespaceSupport.html#getDeclaredPrefixes()">getDeclaredPrefixes</A></B>()</CODE><BR> Return an enumeration of all prefixes declared in this context.</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="../../../../org/xml/sax/helpers/NamespaceSupport.html#getPrefix(java.lang.String)">getPrefix</A></B>(java.lang.String uri)</CODE><BR> Return one of the prefixes mapped to a Namespace URI.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.util.Enumeration</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/xml/sax/helpers/NamespaceSupport.html#getPrefixes()">getPrefixes</A></B>()</CODE><BR> Return an enumeration of all prefixes currently declared.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.util.Enumeration</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/xml/sax/helpers/NamespaceSupport.html#getPrefixes(java.lang.String)">getPrefixes</A></B>(java.lang.String uri)</CODE><BR> Return an enumeration of all prefixes currently declared for a URI.</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="../../../../org/xml/sax/helpers/NamespaceSupport.html#getURI(java.lang.String)">getURI</A></B>(java.lang.String prefix)</CODE><BR> Look up a prefix and get the currently-mapped Namespace URI.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/xml/sax/helpers/NamespaceSupport.html#popContext()">popContext</A></B>()</CODE><BR> Revert to the previous Namespace context.</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="../../../../org/xml/sax/helpers/NamespaceSupport.html#processName(java.lang.String, java.lang.String[], boolean)">processName</A></B>(java.lang.String qName, java.lang.String[] parts, boolean isAttribute)</CODE><BR> Process a raw XML 1.0 name.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/xml/sax/helpers/NamespaceSupport.html#pushContext()">pushContext</A></B>()</CODE><BR> Start a new Namespace context.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/xml/sax/helpers/NamespaceSupport.html#reset()">reset</A></B>()</CODE><BR> Reset this Namespace support object for reuse.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><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, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><A NAME="field_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Field Detail</B></FONT></TD></TR></TABLE><A NAME="XMLNS"><!-- --></A><H3>XMLNS</H3><PRE>public static final java.lang.String <B>XMLNS</B></PRE><DL><DD>The XML Namespace as a constant. <p>This is the Namespace URI that is automatically mapped to the "xml" prefix.</p></DL><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TD>⌨️ 快捷键说明
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