ohair@286: /*
alanb@368:  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
ohair@286:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ohair@286:  *
ohair@286:  * This code is free software; you can redistribute it and/or modify it
ohair@286:  * under the terms of the GNU General Public License version 2 only, as
ohair@286:  * published by the Free Software Foundation.  Oracle designates this
ohair@286:  * particular file as subject to the "Classpath" exception as provided
ohair@286:  * by Oracle in the LICENSE file that accompanied this code.
ohair@286:  *
ohair@286:  * This code is distributed in the hope that it will be useful, but WITHOUT
ohair@286:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ohair@286:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
ohair@286:  * version 2 for more details (a copy is included in the LICENSE file that
ohair@286:  * accompanied this code).
ohair@286:  *
ohair@286:  * You should have received a copy of the GNU General Public License version
ohair@286:  * 2 along with this work; if not, write to the Free Software Foundation,
ohair@286:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ohair@286:  *
ohair@286:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@286:  * or visit www.oracle.com if you need additional information or have any
ohair@286:  * questions.
ohair@286:  */
ohair@286: 
ohair@286: package com.sun.xml.internal.ws.encoding;
ohair@286: 
ohair@286: import com.sun.xml.internal.ws.util.xml.XmlUtil;
ohair@286: 
ohair@286: import javax.activation.ActivationDataFlavor;
ohair@286: import javax.activation.DataContentHandler;
ohair@286: import javax.activation.DataSource;
ohair@286: import javax.xml.transform.OutputKeys;
ohair@286: import javax.xml.transform.Source;
ohair@286: import javax.xml.transform.Transformer;
ohair@286: import javax.xml.transform.stream.StreamResult;
ohair@286: import javax.xml.transform.stream.StreamSource;
ohair@286: import java.awt.datatransfer.DataFlavor;
ohair@286: import java.io.IOException;
ohair@286: import java.io.InputStreamReader;
ohair@286: import java.io.OutputStream;
ohair@286: import java.io.OutputStreamWriter;
ohair@286: import java.util.Arrays;
ohair@286: 
ohair@286: /**
ohair@286:  * JAF data handler for XML content
ohair@286:  *
ohair@286:  * @author Jitendra Kotamraju
ohair@286:  */
ohair@286: public class XmlDataContentHandler implements DataContentHandler {
ohair@286: 
ohair@286:     private final DataFlavor[] flavors;
ohair@286: 
ohair@286:     public XmlDataContentHandler() throws ClassNotFoundException {
ohair@286:         flavors = new DataFlavor[3];
ohair@286:         flavors[0] = new ActivationDataFlavor(StreamSource.class, "text/xml", "XML");
ohair@286:         flavors[1] = new ActivationDataFlavor(StreamSource.class, "application/xml", "XML");
ohair@286:         flavors[2] = new ActivationDataFlavor(String.class, "text/xml", "XML String");
ohair@286:     }
ohair@286: 
ohair@286:     public DataFlavor[] getTransferDataFlavors() {
ohair@286:         return Arrays.copyOf(flavors, flavors.length);
ohair@286:     }
ohair@286: 
ohair@286:     public Object getTransferData(DataFlavor df, DataSource ds)
ohair@286:         throws IOException {
ohair@286: 
ohair@286:         for (DataFlavor aFlavor : flavors) {
ohair@286:             if (aFlavor.equals(df)) {
ohair@286:                 return getContent(ds);
ohair@286:             }
ohair@286:         }
ohair@286:         return null;
ohair@286:     }
ohair@286: 
ohair@286:     /**
ohair@286:      * Create an object from the input stream
ohair@286:      */
ohair@286:     public Object getContent(DataSource ds) throws IOException {
ohair@286:         String ctStr = ds.getContentType();
ohair@286:         String charset = null;
ohair@286:         if (ctStr != null) {
ohair@286:             ContentType ct = new ContentType(ctStr);
ohair@286:             if (!isXml(ct)) {
ohair@286:                 throw new IOException(
ohair@286:                     "Cannot convert DataSource with content type \""
ohair@286:                             + ctStr + "\" to object in XmlDataContentHandler");
ohair@286:             }
ohair@286:             charset = ct.getParameter("charset");
ohair@286:         }
ohair@286:         return (charset != null)
ohair@286:                 ? new StreamSource(new InputStreamReader(ds.getInputStream()), charset)
ohair@286:                 : new StreamSource(ds.getInputStream());
ohair@286:     }
ohair@286: 
ohair@286:     /**
ohair@286:      * Convert the object to a byte stream
ohair@286:      */
ohair@286:     public void writeTo(Object obj, String mimeType, OutputStream os)
ohair@286:         throws IOException {
ohair@286: 
ohair@286:         if (!(obj instanceof DataSource || obj instanceof Source || obj instanceof String)) {
ohair@286:              throw new IOException("Invalid Object type = "+obj.getClass()+
ohair@286:                 ". XmlDataContentHandler can only convert DataSource|Source|String to XML.");
ohair@286:         }
ohair@286: 
ohair@286:         ContentType ct = new ContentType(mimeType);
ohair@286:         if (!isXml(ct)) {
ohair@286:             throw new IOException(
ohair@286:                 "Invalid content type \"" + mimeType + "\" for XmlDataContentHandler");
ohair@286:         }
ohair@286: 
ohair@286:         String charset = ct.getParameter("charset");
ohair@286:         if (obj instanceof String) {
ohair@286:             String s = (String) obj;
ohair@286:             if (charset == null) {
ohair@286:                 charset = "utf-8";
ohair@286:             }
ohair@286:             OutputStreamWriter osw = new OutputStreamWriter(os, charset);
ohair@286:             osw.write(s, 0, s.length());
ohair@286:             osw.flush();
ohair@286:             return;
ohair@286:         }
ohair@286: 
ohair@286:         Source source = (obj instanceof DataSource)
ohair@286:                 ? (Source)getContent((DataSource)obj) : (Source)obj;
ohair@286:         try {
ohair@286:             Transformer transformer = XmlUtil.newTransformer();
ohair@286:             if (charset != null) {
ohair@286:                 transformer.setOutputProperty(OutputKeys.ENCODING, charset);
ohair@286:             }
ohair@286:             StreamResult result = new StreamResult(os);
ohair@286:             transformer.transform(source, result);
ohair@286:         } catch (Exception ex) {
ohair@286:             throw new IOException(
ohair@286:                 "Unable to run the JAXP transformer in XmlDataContentHandler "
ohair@286:                     + ex.getMessage());
ohair@286:         }
ohair@286:     }
ohair@286: 
ohair@286:     private boolean isXml(ContentType ct) {
ohair@286:         return ct.getSubType().equals("xml") &&
ohair@286:                     (ct.getPrimaryType().equals("text") || ct.getPrimaryType().equals("application"));
ohair@286:     }
ohair@286: 
ohair@286: }