001    /**
002     * ===========================================================
003     * LibRepository : a free Java content repository access layer
004     * ===========================================================
005     *
006     * Project Info:  http://jfreereport.pentaho.org/librepository/
007     *
008     * (C) Copyright 2006, by Pentaho Corporation and Contributors.
009     *
010     * This library is free software; you can redistribute it and/or modify it under the terms
011     * of the GNU Lesser General Public License as published by the Free Software Foundation;
012     * either version 2.1 of the License, or (at your option) any later version.
013     *
014     * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
015     * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
016     * See the GNU Lesser General Public License for more details.
017     *
018     * You should have received a copy of the GNU Lesser General Public License along with this
019     * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
020     * Boston, MA 02111-1307, USA.
021     *
022     * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
023     * in the United States and other countries.]
024     *
025     * ------------
026     * ContentItem.java
027     * ------------
028     * (C) Copyright 2006, by Pentaho Corporation.
029     */
030    
031    package org.jfree.repository;
032    
033    import java.io.IOException;
034    import java.io.InputStream;
035    import java.io.OutputStream;
036    
037    /**
038     * A content item holds the actual content. On a file system, this would be a
039     * file. Whether reading and writing the same content item at the same time is
040     * allowed is implementation specific.
041     *
042     * @author Thomas Morgner
043     */
044    public interface ContentItem extends ContentEntity
045    {
046      public String getMimeType() throws ContentIOException;
047      public OutputStream getOutputStream() throws ContentIOException, IOException;
048    
049      public InputStream getInputStream()
050          throws ContentIOException, IOException;
051    
052      public boolean isReadable();
053      public boolean isWriteable();
054    }