/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun in the LICENSE file that accompanied this code.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

/*

 * Copyright (c) 2003 by BEA Systems, Inc. All Rights Reserved.

 */

package javax.xml.stream;

import javax.xml.transform.Result;

/**

 * Defines an abstract implementation of a factory for

 * getting XMLEventWriters and XMLStreamWriters.

 *

 * The following table defines the standard properties of this specification.

 * Each property varies in the level of support required by each implementation.

 * The level of support required is described in the 'Required' column.

 *

 *     <table border="2" rules="all" cellpadding="4">

 *     <thead>

 *      <tr>

 *        <th align="center" colspan="2">

 *          Configuration parameters

 *        </th>

 *      </tr>

 *    </thead>

 *    <tbody>

 *      <tr>

 *        <th>Property Name</th>

 *        <th>Behavior</th>

 *        <th>Return type</th>

 *        <th>Default Value</th>

 *        <th>Required</th>

 *              </tr>

 *         <tr><td>javax.xml.stream.isRepairingNamespaces</td><td>defaults prefixes on the output side</td><td>Boolean</td><td>False</td><td>Yes</td></tr>

 *      </tbody>

 *   </table>

 *

 * <p>The following paragraphs describe the namespace and prefix repair algorithm:</p>

 *

 * <p>The property can be set with the following code line:

 * <code>setProperty("javax.xml.stream.isRepairingNamespaces",new Boolean(true|false));</code></p>

 *

 * <p>This property specifies that the writer default namespace prefix declarations.

 * The default value is false. </p>

 *

 * <p>If a writer isRepairingNamespaces it will create a namespace declaration

 * on the current StartElement for

 * any attribute that does not

 * currently have a namespace declaration in scope.  If the StartElement

 * has a uri but no prefix specified a prefix will be assigned, if the prefix

 * has not been declared in a parent of the current StartElement it will be declared

 * on the current StartElement.  If the defaultNamespace is bound and in scope

 * and the default namespace matches the URI of the attribute or StartElement

 * QName no prefix will be assigned.</p>

 *

 * <p>If an element or attribute name has a prefix, but is not

 * bound to any namespace URI, then the prefix will be removed

 * during serialization.</p>

 *

 * <p>If element and/or attribute names in the same start or

 * empty-element tag are bound to different namespace URIs and

 * are using the same prefix then the element or the first

 * occurring attribute retains the original prefix and the

 * following attributes have their prefixes replaced with a

 * new prefix that is bound to the namespace URIs of those

 * attributes. </p>

 *

 * <p>If an element or attribute name uses a prefix that is

 * bound to a different URI than that inherited from the

 * namespace context of the parent of that element and there

 * is no namespace declaration in the context of the current

 * element then such a namespace declaration is added. </p>

 *

 * <p>If an element or attribute name is bound to a prefix and

 * there is a namespace declaration that binds that prefix

 * to a different URI then that namespace declaration is

 * either removed if the correct mapping is inherited from

 * the parent context of that element, or changed to the

 * namespace URI of the element or attribute using that prefix.</p>

 *

 * @author Copyright (c) 2003 by BEA Systems. All Rights Reserved.

 * @see XMLInputFactory

 * @see XMLEventWriter

 * @see XMLStreamWriter

 * @since 1.6

 */

public abstract class XMLOutputFactory {

  /**

   * Property used to set prefix defaulting on the output side

   */

  public static final String IS_REPAIRING_NAMESPACES=

    "javax.xml.stream.isRepairingNamespaces";

  protected XMLOutputFactory(){}

  /**

   * Create a new instance of the factory.

   * @throws FactoryConfigurationError if an instance of this factory cannot be loaded

   */

  public static XMLOutputFactory newInstance()

    throws FactoryConfigurationError

  {

    return (XMLOutputFactory) FactoryFinder.find("javax.xml.stream.XMLOutputFactory",

                                                 "com.sun.xml.internal.stream.XMLOutputFactoryImpl");

  }

  /**

   * Create a new instance of the factory.

   *

   * @param factoryId             Name of the factory to find, same as

   *                              a property name

   * @param classLoader           classLoader to use

   * @return the factory implementation

   * @throws FactoryConfigurationError if an instance of this factory cannot be loaded

   */

  public static XMLInputFactory newInstance(String factoryId,

          ClassLoader classLoader)

          throws FactoryConfigurationError {

      try {

          //do not fallback if given classloader can't find the class, throw exception

          return (XMLInputFactory) FactoryFinder.newInstance(factoryId, classLoader, false);

      } catch (FactoryFinder.ConfigurationError e) {

          throw new FactoryConfigurationError(e.getException(),

                  e.getMessage());

      }

  }

  /**

   * Create a new XMLStreamWriter that writes to a writer

   * @param stream the writer to write to

   * @throws XMLStreamException

   */

  public abstract XMLStreamWriter createXMLStreamWriter(java.io.Writer stream) throws XMLStreamException;

  /**

   * Create a new XMLStreamWriter that writes to a stream

   * @param stream the stream to write to

   * @throws XMLStreamException

   */

  public abstract XMLStreamWriter createXMLStreamWriter(java.io.OutputStream stream) throws XMLStreamException;

  /**

   * Create a new XMLStreamWriter that writes to a stream

   * @param stream the stream to write to

   * @param encoding the encoding to use

   * @throws XMLStreamException

   */

  public abstract XMLStreamWriter createXMLStreamWriter(java.io.OutputStream stream,

                                         String encoding) throws XMLStreamException;

  /**

   * Create a new XMLStreamWriter that writes to a JAXP result.  This method is optional.

   * @param result the result to write to

   * @throws UnsupportedOperationException if this method is not

   * supported by this XMLOutputFactory

   * @throws XMLStreamException

   */

  public abstract XMLStreamWriter createXMLStreamWriter(Result result) throws XMLStreamException;

  /**

   * Create a new XMLEventWriter that writes to a JAXP result.  This method is optional.

   * @param result the result to write to

   * @throws UnsupportedOperationException if this method is not

   * supported by this XMLOutputFactory

   * @throws XMLStreamException

   */

  public abstract XMLEventWriter createXMLEventWriter(Result result) throws XMLStreamException;

  /**

   * Create a new XMLEventWriter that writes to a stream

   * @param stream the stream to write to

   * @throws XMLStreamException

   */

  public abstract XMLEventWriter createXMLEventWriter(java.io.OutputStream stream) throws XMLStreamException;

  /**

   * Create a new XMLEventWriter that writes to a stream

   * @param stream the stream to write to

   * @param encoding the encoding to use

   * @throws XMLStreamException

   */

  public abstract XMLEventWriter createXMLEventWriter(java.io.OutputStream stream,

                                                     String encoding) throws XMLStreamException;

  /**

   * Create a new XMLEventWriter that writes to a writer

   * @param stream the stream to write to

   * @throws XMLStreamException

   */

  public abstract XMLEventWriter createXMLEventWriter(java.io.Writer stream) throws XMLStreamException;

  /**

   * Allows the user to set specific features/properties on the underlying implementation.

   * @param name The name of the property

   * @param value The value of the property

   * @throws java.lang.IllegalArgumentException if the property is not supported

   */

  public abstract void setProperty(java.lang.String name,

                                    Object value)

    throws IllegalArgumentException;

  /**

   * Get a feature/property on the underlying implementation

   * @param name The name of the property

   * @return The value of the property

   * @throws java.lang.IllegalArgumentException if the property is not supported

   */

  public abstract Object getProperty(java.lang.String name)

    throws IllegalArgumentException;

  /**

   * Query the set of properties that this factory supports.

   *

   * @param name The name of the property (may not be null)

   * @return true if the property is supported and false otherwise

   */

  public abstract boolean isPropertySupported(String name);

}