# FileObjectDataSource.java

    /*
    *  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.synapse.commons.vfs;

    import org.apache.axiom.attachments.SizeAwareDataSource;
    import org.apache.commons.vfs2.FileObject;
    import org.apache.commons.vfs2.FileSystemException;

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

    /**
     * Data source that reads data from a VFS {@link FileObject}.
     * This class is similar to VFS' own FileObjectDataSource implementation, but in addition
     * implements {@link SizeAwareDataSource}.
     */
    public class FileObjectDataSource implements SizeAwareDataSource {

        private final FileObject file;
        private final String contentType;

        public FileObjectDataSource(FileObject file, String contentType) {
            this.file = file;
            this.contentType = contentType;
        }

        public long getSize() {
            try {
                return file.getContent().getSize();
            } catch (FileSystemException ex) {
                return -1;
            }
        }

        public String getContentType() {
            return contentType;
        }

        public String getName() {
            return file.getName().getURI();
        }

        public InputStream getInputStream() throws IOException {
            return file.getContent().getInputStream();
        }

        public OutputStream getOutputStream() throws IOException {
            return file.getContent().getOutputStream();
        }
    }