Mercurial > jdk8-mips64-public > jaxws / file revision

 /*

  * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.

  * 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.  Oracle designates this

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

  * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  */

 package com.sun.xml.internal.bind.v2.util;

 import java.io.IOException;

 import java.io.InputStream;

 import java.io.InputStreamReader;

 import java.io.Reader;

 import javax.activation.DataHandler;

 import javax.activation.DataSource;

 import javax.activation.MimeType;

 import javax.activation.MimeTypeParseException;

 import javax.xml.transform.Source;

 import javax.xml.transform.stream.StreamSource;

 /**

  * {@link Source} implementation backed by {@link DataHandler}.

  *

  * <p>

  * This implementation allows the same {@link Source} to be used

  * mutliple times.

  *

  * <p>

  * {@link Source} isn't really pluggable. As a consequence,

  * this implementation is clunky --- weak against unexpected

  * usage of the class.

  *

  * @author Kohsuke Kawaguchi

  */

 public final class DataSourceSource extends StreamSource {

     private final DataSource source;

     /**

      * If null, default to the encoding declaration

      */

     private final String charset;

     // remember the value we returned so that the 2nd invocation

     // will return the same object, which is what's expeted out of

     // StreamSource

     private Reader r;

     private InputStream is;

     public DataSourceSource(DataHandler dh) throws MimeTypeParseException {

         this(dh.getDataSource());

     }

     public DataSourceSource(DataSource source) throws MimeTypeParseException {

         this.source = source;

         String ct = source.getContentType();

         if(ct==null) {

             charset = null;

         } else {

             MimeType mimeType = new MimeType(ct);

             this.charset = mimeType.getParameter("charset");

         }

     }

     @Override

     public void setReader(Reader reader) {

         throw new UnsupportedOperationException();

     }

     @Override

     public void setInputStream(InputStream inputStream) {

         throw new UnsupportedOperationException();

     }

     @Override

     public Reader getReader() {

         try {

             if(charset==null)   return null;

             if(r==null)

                 r = new InputStreamReader(source.getInputStream(),charset);

             return r;

         } catch (IOException e) {

             // argh

             throw new RuntimeException(e);

         }

     }

     @Override

     public InputStream getInputStream() {

         try {

             if(charset!=null)   return null;

             if(is==null)

                 is = source.getInputStream();

             return is;

         } catch (IOException e) {

             // argh

             throw new RuntimeException(e);

         }

     }

     public DataSource getDataSource() {

         return source;

     }

 }