Package org.apache.clerezza.triaxrs.blackbox.jaf.resources

Source Code of org.apache.clerezza.triaxrs.blackbox.jaf.resources.JsoDataContentHandler

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.clerezza.triaxrs.blackbox.jaf.resources;

import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInput;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.io.OutputStream;

import javax.activation.ActivationDataFlavor;
import javax.activation.DataContentHandler;
import javax.activation.DataSource;

/**
*
* @author mir
*/
public class JsoDataContentHandler implements DataContentHandler {
  private static ActivationDataFlavor myDF = new ActivationDataFlavor(
      org.apache.clerezza.triaxrs.blackbox.jaf.resources.JafSerializableObj.class,
      "application/testobj", "Test Object");

  @Override
  public Object getContent(DataSource ds) throws IOException {
    InputStream is = ds.getInputStream();   
    ObjectInput oi = new ObjectInputStream(is);   
    Object obj = null;   
    try{
      obj = oi.readObject();
      oi.close();
    } catch (ClassNotFoundException e) {
      System.out.println("Class not found");
    }
    return obj;
  }
 
  @Override
  public Object getTransferData(DataFlavor df, DataSource ds)
      throws UnsupportedFlavorException, IOException {
    if (myDF.equals(df)) {
      return getContent(ds);
    }
    return null;
  }

  @Override
  public DataFlavor[] getTransferDataFlavors() {
    return new DataFlavor[] { myDF };
  }

  @Override
  public void writeTo(Object obj, String type, OutputStream os)
      throws IOException {
    if (!(obj instanceof JafSerializableObj)) {
      throw new IOException("\"" + myDF.getMimeType()
          + "\" DataContentHandler requires TestObj object, "
          + "was given object of type " + obj.getClass().toString());
    }
    try {
          // Serialize testObj
          ObjectOutput out = new ObjectOutputStream(os);
          out.writeObject(obj);
          out.close();     
    } catch (Exception e) {  }
  }
}
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