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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libjava/] [classpath/] [javax/] [xml/] [namespace/] [QName.java] - Blame information for rev 772

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1 772 jeremybenn
/* QName.java - An XML qualified name.
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   Copyright (C) 2004,2005,2006 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING.  If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library.  Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module.  An independent module is a module which is not derived from
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or based on this library.  If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so.  If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.xml.namespace;
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import gnu.java.lang.CPStringBuilder;
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import java.io.Serializable;
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import javax.xml.XMLConstants;
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/**
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 * An XML
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 * <a href='http://www.w3.org/TR/REC-xml-names/#ns-qualnames'>qualified name</a>.
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 *
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 * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
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 * @since 1.3
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 */
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public class QName implements Serializable
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{
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  private static final long serialVersionUID = 4418622981026545151L;
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  private final String namespaceURI;
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  private final String localPart;
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  private final String prefix;
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  private transient String qName;
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  transient int hashCode = -1;
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  public QName(String namespaceURI, String localPart)
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  {
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    this(namespaceURI, localPart, null);
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  }
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  public QName(String namespaceURI, String localPart, String prefix)
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  {
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    if (namespaceURI == null)
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      namespaceURI = XMLConstants.NULL_NS_URI;
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    if (localPart == null)
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      throw new IllegalArgumentException();
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    if (prefix == null)
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      prefix = XMLConstants.DEFAULT_NS_PREFIX;
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    else
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      {
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        if (XMLConstants.XML_NS_PREFIX.equals(prefix))
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          namespaceURI = XMLConstants.XML_NS_URI;
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        else if (XMLConstants.XMLNS_ATTRIBUTE.equals(prefix))
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          namespaceURI = XMLConstants.XMLNS_ATTRIBUTE_NS_URI;
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      }
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    this.namespaceURI = namespaceURI;
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    this.localPart = localPart;
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    this.prefix = prefix;
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  }
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  public QName(String localPart)
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  {
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    this(null, localPart, null);
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  }
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  public String getNamespaceURI()
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  {
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    return namespaceURI;
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  }
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  public String getLocalPart()
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  {
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    return localPart;
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  }
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  public String getPrefix()
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  {
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    return prefix;
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  }
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  public final boolean equals(Object obj)
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  {
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    if (obj instanceof QName)
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      {
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        QName qname = (QName) obj;
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        return qname.getLocalPart().equals(localPart) &&
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          qname.getNamespaceURI().equals(namespaceURI);
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      }
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    return false;
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  }
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  public final int hashCode()
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  {
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    if (hashCode == -1)
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      hashCode = localPart.hashCode() ^ namespaceURI.hashCode();
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    return hashCode;
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  }
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  public synchronized String toString()
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  {
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    if (qName == null)
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      {
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        CPStringBuilder buf = new CPStringBuilder();
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        if (namespaceURI.length() > 0)
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          {
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            buf.append('{');
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            buf.append(namespaceURI);
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            buf.append('}');
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          }
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        if (prefix.length() > 0)
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          {
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            buf.append(prefix);
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            buf.append(':');
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          }
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        buf.append(localPart);
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        qName = buf.toString();
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      }
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    return qName;
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  }
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  public static QName valueOf(String qNameAsString)
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  {
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    if (qNameAsString == null)
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      throw new IllegalArgumentException("qNameAsString can't be null");
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    String namespaceUri = "", prefix = null;
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    int start = qNameAsString.indexOf('{');
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    int end = qNameAsString.indexOf('}');
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    if (start != -1)
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      {
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        if (end < start)
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          throw new IllegalArgumentException(qNameAsString);
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        namespaceUri = qNameAsString.substring(start + 1, end);
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        qNameAsString = qNameAsString.substring(end + 1);
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      }
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    start = qNameAsString.indexOf(':');
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    if (start != -1)
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      {
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        prefix = qNameAsString.substring(0, start);
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        qNameAsString = qNameAsString.substring(start + 1);
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      }
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    return new QName(namespaceUri, qNameAsString, prefix);
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  }
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}

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