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

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Here is the source code for io.neba.core.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.core.mvc;

import org.apache.sling.api.request.RequestParameter;
import org.springframework.web.multipart.MultipartFile;

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 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;

    public 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() throws IOException {
        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);
        }
    }
}