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Tom Tromey
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286
libjava/classpath/javax/xml/stream/XMLOutputFactory.java
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286
libjava/classpath/javax/xml/stream/XMLOutputFactory.java
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/* XMLOutputFactory.java --
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Copyright (C) 2005 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.stream;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.io.Writer;
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import java.util.Properties;
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//import javax.xml.transform.Result;
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/**
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* Factory for obtaining XML stream and event writers for various kinds of
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* output sink.
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* <h3>Configuration</h3>
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* <table>
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* <tr>
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* <th>Name</th>
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* <th>Description</th>
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* <th>Type</th>
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* <th>Default</th>
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* <th>Required</th>
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* </tr>
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* <tr>
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* <td>javax.xml.stream.isRepairingNamespaces</td>
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* <td>default namespace prefixes</td>
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* <td>Boolean</td>
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* <td>Boolean.FALSE</td>
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* <td>yes</td>
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* </tr>
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* </table>
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*/
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public abstract class XMLOutputFactory
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{
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/**
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* Property used to control whether to default namespace prefixes.
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* If true, the writer will create a namespace declaration for any
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* attribute that doesn't have a namespace declaration in scope.
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*/
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public static final java.lang.String IS_PREFIX_DEFAULTING =
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"javax.xml.stream.isPrefixDefaulting";
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protected XMLOutputFactory()
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{
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}
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/**
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* Creates a new <b>output</b> factory.
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* The implementation class to load is the first found in the following
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* locations:
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* <ol>
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* <li>the <code>javax.xml.stream.XMLOutputFactory</code> system
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* property</li>
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* <li>the above named property value in the
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* <code><i>$JAVA_HOME</i>/lib/stax.properties</code> file</li>
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* <li>the class name specified in the
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* <code>META-INF/services/javax.xml.stream.XMLOutputFactory</code>
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* system resource</li>
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* <li>the default factory class</li>
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* </ol>
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*/
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public static XMLOutputFactory newInstance()
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throws FactoryConfigurationError
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{
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ClassLoader loader = Thread.currentThread().getContextClassLoader();
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if (loader == null)
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{
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loader = XMLOutputFactory.class.getClassLoader();
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}
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String className = null;
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int count = 0;
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do
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{
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className = getFactoryClassName(loader, count++);
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if (className != null)
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{
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try
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{
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Class t = (loader != null) ? loader.loadClass(className) :
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Class.forName(className);
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return (XMLOutputFactory) t.newInstance();
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}
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catch (ClassNotFoundException e)
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{
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className = null;
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}
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catch (Exception e)
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{
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throw new FactoryConfigurationError(e,
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"error instantiating class " + className);
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}
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}
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}
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while (className == null && count < 3);
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return new gnu.xml.stream.XMLOutputFactoryImpl();
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}
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private static String getFactoryClassName(ClassLoader loader, int attempt)
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{
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final String propertyName = "javax.xml.stream.XMLOutputFactory";
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switch (attempt)
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{
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case 0:
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return System.getProperty(propertyName);
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case 1:
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try
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{
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File file = new File(System.getProperty("java.home"));
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file = new File(file, "lib");
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file = new File(file, "stax.properties");
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InputStream in = new FileInputStream(file);
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Properties props = new Properties();
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props.load(in);
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in.close();
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return props.getProperty(propertyName);
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}
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catch (IOException e)
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{
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return null;
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}
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case 2:
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try
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{
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String serviceKey = "/META-INF/services/" + propertyName;
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InputStream in = (loader != null) ?
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loader.getResourceAsStream(serviceKey) :
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XMLOutputFactory.class.getResourceAsStream(serviceKey);
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if (in != null)
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{
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BufferedReader r =
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new BufferedReader(new InputStreamReader(in));
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String ret = r.readLine();
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r.close();
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return ret;
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}
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}
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catch (IOException e)
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{
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}
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return null;
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default:
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return null;
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}
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}
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/**
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* Creates a new <b>input</b> factory.
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* This appears to be an API design bug.
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* @see javax.xml.stream.XMLInputFactory.newInstance(String,ClassLoader)
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*/
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public static XMLInputFactory newInstance(String factoryId,
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ClassLoader classLoader)
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throws FactoryConfigurationError
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{
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return XMLInputFactory.newInstance(factoryId, classLoader);
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}
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/**
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* Creates a new stream writer.
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*/
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public abstract XMLStreamWriter createXMLStreamWriter(Writer stream)
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throws XMLStreamException;
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/**
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* Creates a new stream writer.
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*/
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public abstract XMLStreamWriter createXMLStreamWriter(OutputStream stream)
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throws XMLStreamException;
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/**
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* Creates a new stream writer.
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*/
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public abstract XMLStreamWriter createXMLStreamWriter(OutputStream stream,
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String encoding)
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throws XMLStreamException;
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/**
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* Creates a new stream writer.
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* @exception UnsupportedOperationException if this method is not
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* supported
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*/
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//public abstract XMLStreamWriter createXMLStreamWriter(Result result)
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// throws XMLStreamException;
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/**
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* Creates a new event writer.
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* @exception UnsupportedOperationException if this method is not
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* supported
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*/
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//public abstract XMLEventWriter createXMLEventWriter(Result result)
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// throws XMLStreamException;
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/**
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* Creates a new event writer.
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*/
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public abstract XMLEventWriter createXMLEventWriter(OutputStream stream)
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throws XMLStreamException;
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/**
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* Creates a new event writer.
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*/
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public abstract XMLEventWriter createXMLEventWriter(OutputStream stream,
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String encoding)
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throws XMLStreamException;
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/**
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* Creates a new event writer.
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*/
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public abstract XMLEventWriter createXMLEventWriter(Writer stream)
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throws XMLStreamException;
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/**
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* Sets the implementation-specific property of the given name.
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* @exception IllegalArgumentException if the property is not supported
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*/
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public abstract void setProperty(String name, Object value)
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throws IllegalArgumentException;
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/**
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* Returns the implementation-specific property of the given name.
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* @exception IllegalArgumentException if the property is not supported
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*/
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public abstract Object getProperty(String name)
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throws IllegalArgumentException;
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/**
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* Indicates whether writers created by this factory will perform prefix
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* defaulting.
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* @see #IS_PREFIX_DEFAULTING
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*/
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public abstract boolean isPrefixDefaulting();
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/**
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* Indicates whether the specified property is supported.
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*/
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public abstract boolean isPropertySupported(String name);
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/**
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* Sets whether writers created by this factory will perform prefix
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* defaulting.
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* @see #IS_PREFIX_DEFAULTING
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*/
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public abstract void setPrefixDefaulting(boolean value);
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}
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