org.apache.myfaces.custom.fileupload.UploadedFileDefaultFileImpl Maven / Gradle / Ivy

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JSF components and utilities that can be used with any JSF implementation. This library is based on the JSF1.1 version of Tomahawk, but with minor source code and build changes to take advantage of JSF2.1 features. A JSF2.1 implementation is required to use this version of the Tomahawk library.

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/*
 * 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.myfaces.custom.fileupload;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.Serializable;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItem;


/**
 * @author Sylvain Vieujot (latest modification by $Author: lu4242 $)
 * @version $Revision: 782291 $ $Date: 2009-06-06 13:03:52 -0500 (Sat, 06 Jun 2009) $
 */
public class UploadedFileDefaultFileImpl extends UploadedFileDefaultImplBase
{
  private static final long serialVersionUID = -6401426361519246443L;
  private transient DiskFileItem fileItem = null;
  private StorageStrategy storageStrategy;

    public UploadedFileDefaultFileImpl(final FileItem fileItem) throws IOException
    {
        super(fileItem.getName(), fileItem.getContentType());
        this.fileItem = (DiskFileItem) fileItem;
        storageStrategy = new DefaultDiskStorageStrategy();
    }

    private class DefaultDiskStorageStrategy 
        extends DiskStorageStrategy implements Serializable
    {
        private static final long serialVersionUID = 5191237379179109587L;
        
        public DefaultDiskStorageStrategy()
        {
        }

        public File getTempFile()
        {
            if (UploadedFileDefaultFileImpl.this.fileItem != null)
            {
                return UploadedFileDefaultFileImpl.this.fileItem.getStoreLocation();
            }
            else
            {
                return null;
            }
        }

        public void deleteFileContents()
        {
            // UploadedFileDefaultFileImpl.this.fileItem becomes null 
            // when the parent class is serialized and deserialized.
            // In this case, the instance contained by the original
            // object is garbage collected, so we don't have to 
            // worry about it.
            if (UploadedFileDefaultFileImpl.this.fileItem != null)
            {
                UploadedFileDefaultFileImpl.this.fileItem.delete();
            }
        }
    }

    /**
     * Answer the uploaded file contents.
     *
     * @return file contents
     */
    public byte[] getBytes() throws IOException
    {
        byte[] bytes = new byte[(int)getSize()];
        if (fileItem != null) fileItem.getInputStream().read(bytes);
        return bytes;
    }


    /**
     * Answer the uploaded file contents input stream
     *
     * @return InputStream
     * @throws IOException
     */
    public InputStream getInputStream() throws IOException
    {
        return fileItem != null
               ? fileItem.getInputStream()
               : new ByteArrayInputStream(new byte[0]);
    }


    /**
     * Answer the size of this file.
     * @return long
     */
    public long getSize()
    {
        return fileItem != null ? fileItem.getSize() : 0;
    }


    public StorageStrategy getStorageStrategy() {
      return storageStrategy;
    }
}