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353 lines
11 KiB
Java
353 lines
11 KiB
Java
/* XMLEventFactory.java --
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Copyright (C) 2005,2006,2009 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.util.Iterator;
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import java.util.Properties;
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import javax.xml.namespace.NamespaceContext;
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import javax.xml.namespace.QName;
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import javax.xml.stream.events.Attribute;
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import javax.xml.stream.events.Characters;
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import javax.xml.stream.events.Comment;
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import javax.xml.stream.events.DTD;
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import javax.xml.stream.events.EndDocument;
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import javax.xml.stream.events.EndElement;
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import javax.xml.stream.events.EntityDeclaration;
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import javax.xml.stream.events.EntityReference;
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import javax.xml.stream.events.Namespace;
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import javax.xml.stream.events.ProcessingInstruction;
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import javax.xml.stream.events.StartDocument;
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import javax.xml.stream.events.StartElement;
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/**
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* Factory for XML events.
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*/
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public abstract class XMLEventFactory
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{
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protected XMLEventFactory()
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{
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}
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/**
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* Create a new factory instance.
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* @see #newInstance(String,ClassLoader)
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*/
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public static XMLEventFactory newInstance()
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throws FactoryConfigurationError
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{
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return newInstance(null, null);
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}
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/**
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* Create a new factory instance.
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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.XMLEventFactory</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.XMLEventFactory</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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* @param factoryId name of the factory to find, same as a property name
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* @param classLoader the class loader to use
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* @return the factory implementation
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* @exception FactoryConfigurationError if an instance of this factory
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* cannot be loaded
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*/
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public static XMLEventFactory newInstance(String factoryId,
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ClassLoader classLoader)
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throws FactoryConfigurationError
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{
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ClassLoader loader = classLoader;
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if (loader == null)
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{
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loader = Thread.currentThread().getContextClassLoader();
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}
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if (loader == null)
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{
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loader = XMLEventFactory.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 (XMLEventFactory) 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.XMLEventFactoryImpl();
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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.XMLEventFactory";
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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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XMLEventFactory.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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* Sets the location for each event created by this factory.
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*/
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public abstract void setLocation(Location location);
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/**
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* Create an attribute event.
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*/
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public abstract Attribute createAttribute(String prefix, String namespaceURI,
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String localName, String value);
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/**
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* Create an attribute event.
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*/
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public abstract Attribute createAttribute(String localName, String value);
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/**
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* Create an attribute event.
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*/
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public abstract Attribute createAttribute(QName name, String value);
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/**
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* Create a namespace declaration event.
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*/
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public abstract Namespace createNamespace(String namespaceURI);
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/**
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* Create a namespace declaration event.
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*/
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public abstract Namespace createNamespace(String prefix, String namespaceUri);
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/**
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* Create a start-element event.
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*/
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@SuppressWarnings("rawtypes")
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public abstract StartElement createStartElement(QName name,
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Iterator attributes,
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Iterator namespaces);
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/**
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* Create a start-element event.
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*/
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public abstract StartElement createStartElement(String prefix,
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String namespaceUri,
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String localName);
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/**
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* Create a start-element event.
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*/
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@SuppressWarnings("rawtypes")
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public abstract StartElement createStartElement(String prefix,
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String namespaceUri,
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String localName,
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Iterator attributes,
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Iterator namespaces);
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/**
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* Create a start-element event.
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*/
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@SuppressWarnings("rawtypes")
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public abstract StartElement createStartElement(String prefix,
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String namespaceUri,
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String localName,
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Iterator attributes,
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Iterator namespaces,
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NamespaceContext context);
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/**
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* Create an end-element event.
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*/
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@SuppressWarnings("rawtypes")
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public abstract EndElement createEndElement(QName name,
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Iterator namespaces);
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/**
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* Create an end-element event.
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*/
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public abstract EndElement createEndElement(String prefix,
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String namespaceUri,
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String localName);
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/**
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* Create an end-element event.
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*/
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@SuppressWarnings("rawtypes")
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public abstract EndElement createEndElement(String prefix,
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String namespaceUri,
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String localName,
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Iterator namespaces);
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/**
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* Create a text event.
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*/
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public abstract Characters createCharacters(String content);
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/**
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* Create a text event of type CDATA section.
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*/
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public abstract Characters createCData(String content);
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/**
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* Create a text event of type whitespace.
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*/
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public abstract Characters createSpace(String content);
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/**
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* Create a text event of type ignorable whitespace.
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*/
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public abstract Characters createIgnorableSpace(String content);
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/**
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* Create a start-document event.
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*/
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public abstract StartDocument createStartDocument();
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/**
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* Create a start-document event.
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*/
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public abstract StartDocument createStartDocument(String encoding,
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String version,
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boolean standalone);
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/**
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* Create a start-document event.
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*/
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public abstract StartDocument createStartDocument(String encoding,
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String version);
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/**
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* Create a start-document event.
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*/
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public abstract StartDocument createStartDocument(String encoding);
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/**
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* Create an end-document event.
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*/
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public abstract EndDocument createEndDocument();
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/**
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* Create an entity reference event.
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*/
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public abstract EntityReference createEntityReference(String name,
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EntityDeclaration declaration);
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/**
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* Create a comment event.
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*/
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public abstract Comment createComment(String text);
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/**
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* Create a processing instruction event.
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*/
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public abstract ProcessingInstruction createProcessingInstruction(String target,
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String data);
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/**
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* Create a DOCTYPE declaration event.
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*/
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public abstract DTD createDTD(String dtd);
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}
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