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Xerces2 is the next generation of high performance, fully compliant XML parsers in the Apache Xerces family. This new version of Xerces introduces the Xerces Native Interface (XNI), a complete framework for building parser components and configurations that is extremely modular and easy to program. The Apache Xerces2 parser is the reference implementation of XNI but other parser components, configurations, and parsers can be written using the Xerces Native Interface. For complete design and implementation documents, refer to the XNI Manual. Xerces2 is a fully conforming XML Schema 1.0 processor. A partial experimental implementation of the XML Schema 1.1 Structures and Datatypes Working Drafts (December 2009) and an experimental implementation of the XML Schema Definition Language (XSD): Component Designators (SCD) Candidate Recommendation (January 2010) are provided for evaluation. For more information, refer to the XML Schema page. Xerces2 also provides a complete implementation of the Document Object Model Level 3 Core and Load/Save W3C Recommendations and provides a complete implementation of the XML Inclusions (XInclude) W3C Recommendation. It also provides support for OASIS XML Catalogs v1.1. Xerces2 is able to parse documents written according to the XML 1.1 Recommendation, except that it does not yet provide an option to enable normalization checking as described in section 2.13 of this specification. It also handles namespaces according to the XML Namespaces 1.1 Recommendation, and will correctly serialize XML 1.1 documents if the DOM level 3 load/save APIs are in use.

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<?xml version='1.0' encoding='UTF-8'?>
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<!DOCTYPE s1 SYSTEM 'dtd/document.dtd'>
<s1 title='&ParserNameLong; Readme'>
  <s2 title='&ParserNameLong; &ParserVersion; Release'>
    <p>
      Welcome to the home of Xerces Java. Xerces2 provides high performance, 
      fully compliant XML parsers in the Apache Xerces family. This new version 
      of Xerces continues to build upon the Xerces Native Interface (XNI), a 
      complete framework for building parser components and configurations that 
      is extremely modular and easy to program. 
    </p>
    <p>
      The Apache Xerces2 parser is the reference implementation 
      of XNI but other parser components, configurations, and parsers
      can be written using the Xerces Native Interface. For complete
      design and implementation documents, refer to the 
      <link idref='xni'>XNI Manual</link>.
    </p>
    <p>
      Xerces2 provides fully conforming XML Schema 1.0 and 1.1 processors. An experimental implementation of the 
	  <jump href='http://www.w3.org/TR/2010/CR-xmlschema-ref-20100119/'>XML Schema Definition
	  Language (XSD): Component Designators</jump> (SCD) Candidate Recommendation (January 2010)	  
	  is also provided for evaluation. For more information, refer to the <link idref='xml-schema'>
	  XML Schema</link> page.
    </p>
    <p>
      Xerces2 also provides a <link idref='dom3'>complete implementation</link> of the 
<jump href="http://www.w3.org/DOM/DOMTR#dom3">Document 
      Object Model Level 3 Core and Load/Save</jump> W3C Recommendations and provides a 
      <link idref='faq-xinclude'>complete implementation</link> of the <jump href="http://www.w3.org/TR/2006/REC-xinclude-20061115/">XML Inclusions 
      (XInclude)</jump> W3C Recommendation. It also provides <link idref='faq-xcatalogs'>support</link>
      for <jump href="http://www.oasis-open.org/committees/download.php/14809/xml-catalogs.html">OASIS XML Catalogs v1.1</jump>.
    </p>


    <p>Xerces2 is able to parse documents written according to the
        <jump href="http://www.w3.org/TR/2006/REC-xml11-20060816/">
        XML 1.1 Recommendation</jump>, except that 
        it does not yet provide an option to enable normalization checking as described
        in section 2.13 of this specification.
        It also handles namespaces according to the 
        <jump href="http://www.w3.org/TR/2006/REC-xml-names11-20060816/">
        XML Namespaces 1.1 Recommendation</jump>,
        and will correctly serialize XML 1.1 documents if the DOM level
        3 load/save APIs are in use.
    </p>

  </s2>
  <s2 title='Features of This Release'>
    <p>
      The &ParserNameLong; &ParserVersion; supports the
      following standards and APIs:
    </p>
    <ul>
      <li>
	<jump href='http://www.w3.org/XML/'>eXtensible Markup Language</jump>
	(XML) 1.0 
	<jump href='http://www.w3.org/TR/2006/REC-xml-20060816/'>Fourth 
	  Edition</jump> Recommendation
      </li>
      <li>
	   <jump href='http://www.w3.org/TR/2006/REC-xml-names-20060816/'>Namespaces in XML 1.0</jump>
	   Second Edition Recommendation
      </li>
      <li>
	<jump href='http://www.w3.org/XML/'>eXtensible Markup Language</jump>
	(XML) 1.1 
	<jump href='http://www.w3.org/TR/2006/REC-xml11-20060816/'>Second 
	  Edition</jump> Recommendation
      </li>
      <li>
        <jump href='http://www.w3.org/TR/2006/REC-xml-names11-20060816/'>Namespaces in XML 1.1</jump>
        Second Edition Recommendation
      </li>
      <li>
        <jump href='http://www.w3.org/TR/2006/REC-xinclude-20061115/'>
          XML Inclusions (XInclude) Version 1.0</jump> Second Edition Recommendation
      </li>
      <li>
	<jump href='http://www.w3.org/DOM/'>Document Object Model</jump>
	(DOM) Level 3
	<jump href='http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/'>Core</jump>,
	<jump href='http://www.w3.org/TR/2004/REC-DOM-Level-3-LS-20040407/'>Load and Save</jump>,
	(DOM) Level 2
	<jump href='http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/'>Core</jump>,
	<jump href='http://www.w3.org/TR/2000/REC-DOM-Level-2-Events-20001113/'>Events</jump>,
	and
	<jump href='http://www.w3.org/TR/2000/REC-DOM-Level-2-Traversal-Range-20001113/'>Traversal
	  and Range</jump> Recommendations
      </li>
      <li>
    <jump href='http://www.w3.org/TR/2008/REC-ElementTraversal-20081222/'>Element Traversal</jump>
      First Edition Recommendation
      </li>
      <li>
	<jump href='http://sax.sourceforge.net/'>Simple API for XML</jump> (SAX) 2.0.2 Core and Extensions
      </li>
      <li>
	<jump href='http://www.jcp.org/en/jsr/summary?id=206'>Java APIs for 
	  XML Processing</jump> (JAXP) 1.4
      </li>
      <li>
    <jump href='http://www.jcp.org/en/jsr/summary?id=173'>Streaming API For XML</jump> (StAX) 1.0 
    Event API (javax.xml.stream.events)
      </li>
      <li>
	<jump href='http://www.w3.org/XML/Schema'>XML Schema</jump> 1.0
	<jump href='http://www.w3.org/TR/2004/REC-xmlschema-1-20041028/'>Structures</jump>
	and
	<jump href='http://www.w3.org/TR/2004/REC-xmlschema-2-20041028/'>Datatypes</jump>
	Second Edition Recommendations
      </li>
      <li>
	<jump href='http://www.w3.org/XML/Schema'>XML Schema</jump> 1.1
	<jump href='http://www.w3.org/TR/2012/REC-xmlschema11-1-20120405/'>Structures</jump>
	and
	<jump href='http://www.w3.org/TR/2012/REC-xmlschema11-2-20120405/'>Datatypes</jump> Recommendations
      </li>   
      <li>
    <jump href='http://www.w3.org/TR/2010/CR-xmlschema-ref-20100119/'>XML Schema Definition Language 
    (XSD): Component Designators</jump> (SCD) Candidate Recommendation (January 2010)
      </li>   
    </ul>
  </s2>
  
  <s2 title='Backwards compatibility'>
    <p> According to the DOM Level 3 specification and 
      <jump href="http://www.w3.org/2000/11/DOM-Level-2-errata#core-26">DOM Level 2 errata
      </jump> the createElementNS and createAttributeNS methods convert empty string 
      namespaceURI to null. 
      Please, let us know if this change affects your application.</p>
  </s2>
  
  <s2 title='Changes from Previous Release'>

    <p>
      The &ParserNameLong; &ParserVersion; is a bug fix release, and is largely compatible with
      the previous release in terms of broad functionality offered. It fixes few bugs which were 
      present in the previous release and also includes a few other minor enhancements.
    </p>
    <p>
      For a more complete list of changes, refer to the 
      <link idref='releases'>Release Information</link> page.
    </p>	      
  </s2>

  <s2 title='Changes from Xerces 1.x'>
    <p>
      Xerces2 is a nearly complete rewrite of the Xerces 1.x codebase
      in order to make the code cleaner, more modular, and easier to
      maintain. It includes a completely redesigned and rewritten XML Schema validation engine. 

      Applications using only the standard interfaces such as
      JAXP, DOM, and SAX should not see any differences. 
    </p>
  </s2>
  <s2 title='License Information'>
    <p>
      The &ParserName; &ParserVersion; release is available
      in source code and precompiled binary (JAR files) form. 
      Both &ParserName; packages are made available under the 
      <jump href='http://www.apache.org/licenses/LICENSE-2.0'>Apache Software
	License</jump>.
    </p>
  </s2>
</s1>