br.com.caelum.vraptor.observer.upload.CommonsUploadedFile.java Source code

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Here is the source code for br.com.caelum.vraptor.observer.upload.CommonsUploadedFile.java

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/***
 * Copyright (c) 2009 Caelum - www.caelum.com.br/opensource
 * All rights reserved.
 *
 * Licensed 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 br.com.caelum.vraptor.observer.upload;

import static com.google.common.base.Throwables.propagateIfPossible;
import static java.util.Objects.requireNonNull;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.file.CopyOption;
import java.nio.file.Path;

import javax.enterprise.inject.Vetoed;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.io.IOUtils;

/**
 * An implementation for {@link UploadedFile} that delegates all operations to Apache Commons 
 * FileUpload API.
 * 
 * @author Otvio Scherer Garcia
 * @since 4.2
 */
@Vetoed
public class CommonsUploadedFile implements UploadedFile {
    private static final String TARGET_CANNOT_BE_NULL = "Target can't be null";

    private final FileItem delegate;

    public CommonsUploadedFile(FileItem fileItem) {
        this.delegate = fileItem;
    }

    @Override
    public String getContentType() {
        return delegate.getContentType();
    }

    @Override
    public InputStream getFile() throws IOException {
        return delegate.getInputStream();
    }

    @Override
    public String getFileName() {
        return FilenameUtils.getName(delegate.getName());
    }

    @Override
    public long getSize() {
        return delegate.getSize();
    }

    @Override
    public void writeTo(File target) throws IOException {
        requireNonNull(target, TARGET_CANNOT_BE_NULL);

        try {
            delegate.write(target);
        } catch (IOException e) {
            throw e;
        } catch (Exception e) {
            propagateIfPossible(e);
            throw new IOException(e);
        }
    }

    @Override
    public void writeTo(Path target, CopyOption... options) throws IOException {
        requireNonNull(target, TARGET_CANNOT_BE_NULL);
        writeTo(target.toFile());
    }

    @Override
    public void writeTo(OutputStream target) throws IOException {
        requireNonNull(target, TARGET_CANNOT_BE_NULL);
        IOUtils.copy(getFile(), target);
    }

    @Override
    public String toString() {
        return String.format("UploadedFile[name=%s]", getFileName());
    }
}