io.neba.spring.mvc.SlingMultipartFile.java Source code

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Here is the source code for io.neba.spring.mvc.SlingMultipartFile.java

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/*
  Copyright 2013 the original author or authors.
    
  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 io.neba.spring.mvc;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.sling.api.request.RequestParameter;
import org.springframework.web.multipart.MultipartFile;

import static org.apache.commons.io.IOUtils.closeQuietly;
import static org.apache.commons.io.IOUtils.copy;

/**
 * Uses the {@link org.apache.sling.api.SlingHttpServletRequest} {@link RequestParameter} API
 * to provide a {@link MultipartFile}.
 *  
 * @author Olaf Otto
 */
public class SlingMultipartFile implements MultipartFile {
    private final RequestParameter source;
    private final String name;

    SlingMultipartFile(String paramName, RequestParameter requestParameter) {
        this.source = requestParameter;
        this.name = paramName;
    }

    @Override
    public String getName() {
        return this.name;
    }

    @Override
    public String getOriginalFilename() {
        return this.source.getFileName();
    }

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

    @Override
    public boolean isEmpty() {
        return this.source.getSize() == 0L;
    }

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

    @Override
    public byte[] getBytes() {
        return this.source.get();
    }

    @Override
    public InputStream getInputStream() throws IOException {
        return this.source.getInputStream();
    }

    @Override
    public void transferTo(File dest) throws IOException, IllegalStateException {
        if (dest.exists() && !dest.delete()) {
            throw new IOException(
                    "Destination file [" + dest.getAbsolutePath() + "] already exists and could not be deleted");
        }
        final InputStream in = getInputStream();
        final OutputStream out = new BufferedOutputStream(new FileOutputStream(dest));
        try {
            copy(in, out);
            out.flush();
        } finally {
            closeQuietly(out);
            closeQuietly(in);
        }
    }
}