/*

 * Copyright (c) 1997, 2013, 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

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package com.sun.xml.internal.messaging.saaj.soap;

import java.awt.datatransfer.DataFlavor;

import java.io.IOException;

import java.io.OutputStream;

import java.io.InputStream;

import javax.activation.*;

import javax.xml.transform.Source;

import com.sun.xml.internal.messaging.saaj.util.FastInfosetReflection;

/**

 * JAF data handler for Fast Infoset content

 *

 * @author Santiago Pericas-Geertsen

 */

public class FastInfosetDataContentHandler implements DataContentHandler {

    public static final String STR_SRC = "com.sun.xml.internal.org.jvnet.fastinfoset.FastInfosetSource";

    public FastInfosetDataContentHandler() {

    }

    /**

     * return the DataFlavors for this <code>DataContentHandler</code>

     * @return The DataFlavors.

     */

    public DataFlavor[] getTransferDataFlavors() { // throws Exception;

        DataFlavor flavors[] = new DataFlavor[1];

        flavors[0] = new ActivationDataFlavor(

                FastInfosetReflection.getFastInfosetSource_class(),

                "application/fastinfoset", "Fast Infoset");

        return flavors;

    }

    /**

     * return the Transfer Data of type DataFlavor from InputStream

     * @param df The DataFlavor.

     * @param ins The InputStream corresponding to the data.

     * @return The constructed Object.

     */

    public Object getTransferData(DataFlavor flavor, DataSource dataSource)

        throws IOException

    {

        if (flavor.getMimeType().startsWith("application/fastinfoset")) {

            try {

                if (flavor.getRepresentationClass().getName().equals(STR_SRC)) {

                    return FastInfosetReflection.FastInfosetSource_new(

                        dataSource.getInputStream());

                }

            }

            catch (Exception e) {

                throw new IOException(e.getMessage());

            }

        }

        return null;

    }

    public Object getContent(DataSource dataSource) throws IOException {

        try {

            return FastInfosetReflection.FastInfosetSource_new(

                dataSource.getInputStream());

        }

        catch (Exception e) {

            throw new IOException(e.getMessage());

        }

    }

    /**

     * construct an object from a byte stream

     * (similar semantically to previous method, we are deciding

     *  which one to support)

     */

    public void writeTo(Object obj, String mimeType, OutputStream os)

        throws IOException

    {

        if (!mimeType.equals("application/fastinfoset")) {

            throw new IOException("Invalid content type \"" + mimeType

                + "\" for FastInfosetDCH");

        }

        try {

            InputStream is = FastInfosetReflection.FastInfosetSource_getInputStream(

                (Source) obj);

            int n; byte[] buffer = new byte[4096];

            while ((n = is.read(buffer)) != -1) {

                os.write(buffer, 0, n);

            }

        }

        catch (Exception ex) {

            throw new IOException(

                "Error copying FI source to output stream " + ex.getMessage());

        }

    }

}