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    1   /*
    2    * Copyright 2004-2009 the Seasar Foundation and the Others.
    3    *
    4    * Licensed under the Apache License, Version 2.0 (the "License");
    5    * you may not use this file except in compliance with the License.
    6    * You may obtain a copy of the License at
    7    *
    8    *     http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
    13   * either express or implied. See the License for the specific language
    14   * governing permissions and limitations under the License.
    15   */
    16  package org.seasar.cubby.converter.impl;
    17
    18  import java.io.IOException;
    19  import java.io.InputStream;
    20
    21  import org.apache.commons.fileupload.FileItem;
    22  import org.seasar.cubby.converter.Converter;
    23
    24  /**
    25   * {@link FileItem}から{@link InputStream}へ変換する{@link Converter}です。
    26   *
    27   * @author baba
    28   */
    29  public class InputStreamFileItemConverter extends AbstractFileItemConverter {
    30
    31  	/**
    32  	 * {@inheritDoc}
    33  	 *
    34  	 * @return {@link InputStream}のクラスを返します。
    35  	 */
    36  	public Class<?> getObjectType() {
    37  		return InputStream.class;
    38  	}
    39
    40  	/**
    41  	 * {@inheritDoc}
    42  	 * <p>
    43  	 * 指定された{@link FileItem}から取得した{@link InputStream}を返します。変換時に
    44  	 * {@link IOException}が発生した場合は <code>null</code> を返します。
    45  	 * </p>
    46  	 *
    47  	 * @return 指定された{@link FileItem}から取得した{@link InputStream}
    48  	 * @see FileItem#getInputStream()
    49  	 */
    50  	@Override
    51  	protected Object convert(final FileItem fileItem) {
    52  		try {
    53  			return fileItem.getInputStream();
    54  		} catch (final IOException e) {
    55  			return null;
    56  		}
    57  	}
    58
    59  }