Initial revision

From-SVN: r104578

libjava/classpath/javax/xml/stream/util/ReaderDelegate.java

@@ -0,0 +1,409 @@
+/* ReaderDelegate.java -- 
+   Copyright (C) 2005  Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package javax.xml.stream.util;
+
+import javax.xml.namespace.NamespaceContext;
+import javax.xml.namespace.QName;
+import javax.xml.stream.Location;
+import javax.xml.stream.XMLStreamConstants;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+
+/**
+ * Base class for XML stream reader filters.
+ */
+public class ReaderDelegate
+  implements XMLStreamReader, XMLStreamConstants
+{
+
+  private XMLStreamReader parent;
+
+  /**
+   * Constructs an empty filter with no parent set.
+   */
+  public ReaderDelegate()
+  {
+  }
+
+  /**
+   * Constructs an empty filter with the specfied parent.
+   */
+  public ReaderDelegate(XMLStreamReader reader)
+  {
+    parent = reader;
+  }
+
+  /**
+   * Sets the parent.
+   */
+  public void setParent(XMLStreamReader reader)
+  {
+    parent = reader;
+  }
+
+  /**
+   * Returns the parent.
+   */
+  public XMLStreamReader getParent()
+  {
+    return parent;
+  }
+
+  public int next()
+    throws XMLStreamException
+  {
+    if (parent != null)
+      return parent.next();
+    throw new XMLStreamException();
+  }
+
+  public int nextTag()
+    throws XMLStreamException
+  {
+    if (parent != null)
+      return parent.nextTag();
+    throw new XMLStreamException();
+  }
+
+  public String getElementText()
+    throws XMLStreamException
+  {
+    if (parent != null)
+      return parent.getElementText();
+    throw new XMLStreamException();
+  }
+
+  public void require(int type, String namespaceURI, String localName)
+    throws XMLStreamException
+  {
+    if (parent != null)
+      parent.require(type, namespaceURI, localName);
+  }
+
+  public boolean hasNext()
+    throws XMLStreamException
+  {
+    if (parent != null)
+      return parent.hasNext();
+    return false;
+  }
+
+  public void close()
+    throws XMLStreamException
+  {
+    if (parent != null)
+      parent.close();
+  }
+
+  public String getNamespaceURI(String prefix)
+  {
+    if (parent != null)
+      return parent.getNamespaceURI(prefix);
+    return null;
+  }
+
+  public NamespaceContext getNamespaceContext()
+  {
+    if (parent != null)
+      return parent.getNamespaceContext();
+    return null;
+  }
+
+  public boolean isStartElement()
+  {
+    if (parent != null)
+      return parent.isStartElement();
+    return false;
+  }
+
+  public boolean isEndElement()
+  {
+    if (parent != null)
+      return parent.isEndElement();
+    return false;
+  }
+
+  public boolean isCharacters()
+  {
+    if (parent != null)
+      return parent.isCharacters();
+    return false;
+  }
+
+  public boolean isWhiteSpace()
+  {
+    if (parent != null)
+      return parent.isWhiteSpace();
+    return false;
+  }
+
+  public String getAttributeValue(String namespaceUri, String localName)
+  {
+    if (parent != null)
+      return parent.getAttributeValue(namespaceUri, localName);
+    return null;
+  }
+
+  public int getAttributeCount()
+  {
+    if (parent != null)
+      return parent.getAttributeCount();
+    return 0;
+  }
+
+  public QName getAttributeQName(int index)
+  {
+    if (parent != null)
+      return parent.getAttributeQName(index);
+    return null;
+  }
+
+  public String getAttributePrefix(int index)
+  {
+    if (parent != null)
+      return parent.getAttributePrefix(index);
+    return null;
+  }
+
+  public String getAttributeNamespace(int index)
+  {
+    if (parent != null)
+      return parent.getAttributeNamespace(index);
+    return null;
+  }
+
+  public String getAttributeName(int index)
+  {
+    if (parent != null)
+      return parent.getAttributeName(index);
+    return null;
+  }
+
+  public String getAttributeType(int index)
+  {
+    if (parent != null)
+      return parent.getAttributeType(index);
+    return null;
+  }
+
+  public String getAttributeValue(int index)
+  {
+    if (parent != null)
+      return parent.getAttributeValue(index);
+    return null;
+  }
+
+  public boolean isAttributeSpecified(int index)
+  {
+    if (parent != null)
+      return parent.isAttributeSpecified(index);
+    return false;
+  }
+
+  public int getNamespaceCount()
+  {
+    if (parent != null)
+      return parent.getNamespaceCount();
+    return 0;
+  }
+
+  public String getNamespacePrefix(int index)
+  {
+    if (parent != null)
+      return parent.getNamespacePrefix(index);
+    return null;
+  }
+
+  public String getNamespaceURI(int index)
+  {
+    if (parent != null)
+      return parent.getNamespaceURI(index);
+    return null;
+  }
+
+  public int getEventType()
+  {
+    if (parent != null)
+      return parent.getEventType();
+    return 0;
+  }
+
+  public String getText()
+  {
+    if (parent != null)
+      return parent.getText();
+    return null;
+  }
+
+  public int getTextCharacters(int sourceStart, char[] target,
+                               int targetStart, int length)
+    throws XMLStreamException
+  {
+    if (parent != null)
+      return parent.getTextCharacters(sourceStart, target, targetStart, length);
+    return 0;
+  }
+
+  public char[] getTextCharacters()
+  {
+    if (parent != null)
+      return parent.getTextCharacters();
+    return null;
+  }
+
+  public int getTextStart()
+  {
+    if (parent != null)
+      return parent.getTextStart();
+    return 0;
+  }
+
+  public int getTextLength()
+  {
+    if (parent != null)
+      return parent.getTextLength();
+    return 0;
+  }
+
+  public String getEncoding()
+  {
+    if (parent != null)
+      return parent.getEncoding();
+    return null;
+  }
+
+  public boolean hasText()
+  {
+    if (parent != null)
+      return parent.hasText();
+    return false;
+  }
+
+  public Location getLocation()
+  {
+    if (parent != null)
+      return parent.getLocation();
+    return null;
+  }
+
+  public QName getName()
+  {
+    if (parent != null)
+      return parent.getName();
+    return null;
+  }
+
+  public String getLocalName()
+  {
+    if (parent != null)
+      return parent.getLocalName();
+    return null;
+  }
+
+  public boolean hasName()
+  {
+    if (parent != null)
+      return parent.hasName();
+    return false;
+  }
+
+  public String getNamespaceURI()
+  {
+    if (parent != null)
+      return parent.getNamespaceURI();
+    return null;
+  }
+
+  public String getPrefix()
+  {
+    if (parent != null)
+      return parent.getPrefix();
+    return null;
+  }
+
+  public String getVersion()
+  {
+    if (parent != null)
+      return parent.getVersion();
+    return null;
+  }
+
+  public boolean isStandalone()
+  {
+    if (parent != null)
+      return parent.isStandalone();
+    return false;
+  }
+
+  public boolean standaloneSet()
+  {
+    if (parent != null)
+      return parent.standaloneSet();
+    return false;
+  }
+
+  public String getCharacterEncodingScheme()
+  {
+    if (parent != null)
+      return parent.getCharacterEncodingScheme();
+    return null;
+  }
+
+  public String getPITarget()
+  {
+    if (parent != null)
+      return parent.getPITarget();
+    return null;
+  }
+
+  public String getPIData()
+  {
+    if (parent != null)
+      return parent.getPIData();
+    return null;
+  }
+
+  public Object getProperty(String name)
+  {
+    if (parent != null)
+      return parent.getProperty(name);
+    throw new IllegalArgumentException();
+  }
+  
+}
+