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

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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 org.apache.commons.fileupload.FileItem;

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


/**
 * @author Sylvain Vieujot (latest modification by $Author: skitching $)
 * @version $Revision: 673833 $ $Date: 2008-07-03 16:58:05 -0500 (Thu, 03 Jul 2008) $
 */
public class UploadedFileDefaultMemoryImpl extends UploadedFileDefaultImplBase
{
    private static final long serialVersionUID = -6006333070975059090L;
    private byte[] bytes;
    private StorageStrategy storageStrategy;


    public UploadedFileDefaultMemoryImpl(final FileItem fileItem) throws IOException
    {
        super(fileItem.getName(), fileItem.getContentType());
        int sizeInBytes = (int)fileItem.getSize();
        bytes = new byte[sizeInBytes];
        fileItem.getInputStream().read(bytes);
      this.storageStrategy = new StorageStrategy() {

        public void deleteFileContents() {
          fileItem.delete();
          bytes = null;
        }
        
      };
    }


    /**
     * Answer the uploaded file contents.
     *
     * @return file contents
     */
    public byte[] getBytes()
    {
        return bytes;
    }


    /**
     * Answer the uploaded file contents input stream
     *
     * @return InputStream
     * @throws IOException
     */
    public InputStream getInputStream() throws IOException
    {
        return new ByteArrayInputStream( bytes );
    }


    /**
     * Answer the size of this file.
     * @return long
     */
    public long getSize() {
        if( bytes == null )
            return 0;
        return bytes.length;
    }


    public StorageStrategy getStorageStrategy() {
      return storageStrategy;
    }
    
    
}