StreamingDataSource.java

/*******************************************************************************
 * Copyright (c) 2012-2016 Codenvy, S.A.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.everrest.core.impl.provider.ext;

import javax.activation.DataSource;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

/**
 * Implementation of DataSource which simply wrap stream. Note this
 * implementation is not completely conform with DataSource contract. It does
 * not return new <code>InputStream</code> for each call of method
 * {@link #getInputStream()}.
 *
 * @author andrew00x
 */
public class StreamingDataSource implements DataSource {
    private final InputStream stream;
    private final String contentType;

    public StreamingDataSource(InputStream stream, String contentType) {
        this.stream = stream;
        this.contentType = contentType;
    }

    @Override
    public String getContentType() {
        return contentType;
    }

    @Override
    public InputStream getInputStream() throws IOException {
        return stream;
    }

    @Override
    public String getName() {
        return null;
    }

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