org.apache.abdera.util.AbderaDataSource Maven / Gradle / Ivy

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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  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.  For additional information regarding
* copyright in this work, please see the NOTICE file in the top level
* directory of this distribution.
*/
package org.apache.abdera.util;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import javax.activation.DataSource;

import org.apache.abdera.model.Base;

/**
 * Utility implementation of javax.activation.DataSource that wraps Abdera Base
 */
public final class AbderaDataSource 
  implements DataSource {
  
  private final byte[] data;
  private final String mimetype;
  private final String name;
  
  public AbderaDataSource(Base base) {
    this.data = read(base);
    this.mimetype = MimeTypeHelper.getMimeType(base);
    this.name = base.getClass().getName();
  }
  
  private byte[] read(Base base) {
    byte[] data = null;
    try {
      ByteArrayOutputStream out = new ByteArrayOutputStream();
      base.writeTo(out);
      data = out.toByteArray();
    } catch (IOException e) {}
    return data;
  }
  
  public String getContentType() {
    return mimetype;
  }

  public InputStream getInputStream() throws IOException {
    return new ByteArrayInputStream(data);
  }

  public String getName() {
    return "Abdera Data Source::" + name;
  }

  public OutputStream getOutputStream() throws IOException {
    throw new UnsupportedOperationException();
  }

}