org.tangram.spring.StreamingMultipartFile.java Source code

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Here is the source code for org.tangram.spring.StreamingMultipartFile.java

Source

/**
 *
 * Copyright 2009-2014
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 */
package org.tangram.spring;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import org.apache.commons.fileupload.FileItemStream;
import org.apache.commons.io.IOUtils;
import org.springframework.web.multipart.MultipartException;
import org.springframework.web.multipart.MultipartFile;

public class StreamingMultipartFile implements MultipartFile {

    private final FileItemStream item;

    private final long size = -1;

    private final byte[] bytes;

    public StreamingMultipartFile(FileItemStream item) throws IOException {
        this.item = item;
        bytes = IOUtils.toByteArray(item.openStream());
    } // StreamingMultipartFile()

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

    @Override
    public String getOriginalFilename() {
        return item.getFieldName();
    }

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

    @Override
    public boolean isEmpty() {
        return false;
    }

    @Override
    public long getSize() {
        if (size > 0) {
            try {
                return getBytes().length;
            } catch (IOException e) {
                throw new MultipartException("Something went wrong here", e);
            } // try/catch
        } // if
        return size;
    } // getSize()

    @Override
    public byte[] getBytes() throws IOException {
        return bytes;
    } // getBytes()

    @Override
    public InputStream getInputStream() throws IOException {
        return item.openStream();
    } // getInputStream()

    @Override
    public void transferTo(File dest) throws IOException, IllegalStateException {
        throw new UnsupportedOperationException("transfer to file not implemented");
    } // transferTo()

} // StreamingMultipartFile