gcc/libjava/classpath/javax/xml/parsers/DocumentBuilder.java

/* DocumentBuilder.java --
   Copyright (C) 2004, 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
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terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
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this exception to your version of the library, but you are not
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exception statement from your version. */

package javax.xml.parsers;

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.IOException;
import javax.xml.validation.Schema;
import org.w3c.dom.Document;
import org.w3c.dom.DOMImplementation;
import org.xml.sax.InputSource;
import org.xml.sax.EntityResolver;
import org.xml.sax.ErrorHandler;
import org.xml.sax.SAXException;

/**
 * Convenience class for parsing an XML document into a W3C DOM object
 * graph.
 * Instances of this class are <em>not</em> guaranteed to be thread safe.
 *
 * @author (a href='mailto:dog@gnu.org'>Chris Burdess</a)
 */
public abstract class DocumentBuilder
{

  protected DocumentBuilder()
  {
  }

  /**
   * Parse the specified input stream and return a DOM Document.
   * Prefer the version of this method that specifies a system ID, in order
   * to resolve external references correctly.
   * @param is an XML input stream
   * @exception IllegalArgumentException if the input stream is null
   */
  public Document parse(InputStream is)
    throws SAXException, IOException
  {
    if (is == null)
      {
        throw new IllegalArgumentException("input stream is null");
      }
    return parse(new InputSource(is));
  }

  /**
   * Parse the specified input stream and return a DOM Document.
   * @param is an XML input stream
   * @param systemId the system ID of the XML document
   * @exception IllegalArgumentException if the input stream is null
   */
  public Document parse(InputStream is, String systemId)
    throws SAXException, IOException
  {
    if (is == null)
      {
        throw new IllegalArgumentException("input stream is null");
      }
    InputSource  source = new InputSource(is);
    source.setSystemId(systemId);
    return parse(source);
  }

  /**
   * Parse the content of the specified URI and return a DOM Document.
   * @param uri an XML system ID
   * @exception IllegalArgumentException if the URI is null
   */
  public Document parse(String uri)
    throws SAXException, IOException
  {
    if (uri == null)
      {
        throw new IllegalArgumentException("URI is null");
      }
    return parse(new InputSource(uri));
  }

  /**
   * Parse the specified file and return a DOM Document.
   * @param f the XML file
   * @exception IllegalArgumentException if the file is null
   */
  public Document parse(File f)
    throws SAXException, IOException
  {
    if (f == null)
      {
        throw new IllegalArgumentException("file is null");
      }
    InputSource  source = new InputSource(new FileInputStream(f));
    source.setSystemId(f.toURL().toString());
    return parse(source);
  }

  /**
   * Parse the specified input source and return a DOM Document.
   * @param source the input source
   * @exception IllegalArgumentException if the input source is null
   */
  public abstract Document parse(InputSource source)
    throws SAXException, IOException;

  /**
   * Indicates whether this document builder is XML Namespace aware.
   */
  public abstract boolean isNamespaceAware();

  /**
   * Indicates whether this document builder will validate its input.
   */
  public abstract boolean isValidating();

  /**
   * Sets the SAX entity resolver callback used to resolve external entities
   * in the XML document(s) to parse.
   * @param er an entity resolver
   */
  public abstract void setEntityResolver(EntityResolver er);

  /**
   * Sets the SAX error handler callback used to report parsing errors.
   * @param eh the error handler
   */
  public abstract void setErrorHandler(ErrorHandler eh);

  /**
   * Creates a new, empty DOM Document.
   * To create a document with a root element and optional doctype, use the
   * <code>DOMImplementation</code> instead.
   * @see org.w3c.dom.DOMImplementation#createDocument
   */
  public abstract Document newDocument();

  /**
   * Returns the DOM implementation.
   */
  public abstract DOMImplementation getDOMImplementation();

  // -- JAXP 1.3 methods --

  /**
   * Reset this document builder to its original configuration.
   * @since 1.3
   */
  public void reset()
  {
  }

  /**
   * Returns the schema in use by the XML processor.
   */
  public Schema getSchema()
  {
    return null;
  }

  /**
   * Returns the XInclude processing mode in use by the parser.
   */
  public boolean isXIncludeAware()
  {
    return false;
  }

}