de.iai.ilcd.services.FileResource.java Source code

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Here is the source code for de.iai.ilcd.services.FileResource.java

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/*******************************************************************************
 * Copyright (c) 2011 Karlsruhe Institute of Technology (KIT) - Institute for
 * Applied Computer Science (IAI).
 * 
 * This file is part of soda4LCA - the Service-Oriented Life Cycle Data Store.
 * 
 * soda4LCA is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * soda4LCA 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with soda4LCA. If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/

package de.iai.ilcd.services;

import java.io.File;

import javax.activation.MimetypesFileTypeMap;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import de.iai.ilcd.model.common.DigitalFile;
import de.iai.ilcd.model.dao.SourceDao;
import de.iai.ilcd.model.source.Source;

/**
 * REST Web Service
 * 
 * @author clemens.duepmeier
 */

@Component
@Path("external_docs")
public class FileResource {

    public static Logger logger = LoggerFactory.getLogger(de.iai.ilcd.services.FileResource.class);

    @Context
    private UriInfo context;

    /** Creates a new instance of FileResource */
    public FileResource() {
    }

    @GET
    @Path("{sourceId}/{fileName}")
    @Produces({ "image/*", "application/*" })
    public Response getExternalFile(@PathParam("sourceId") String sourceId,
            @PathParam("fileName") String fileName) {

        SourceDao sourceDao = new SourceDao();
        Source source = sourceDao.getByDataSetId(sourceId);

        if (source == null)
            throw new WebApplicationException(404);

        DigitalFile requestedFile = null;
        for (DigitalFile file : source.getFiles()) {
            if (file.getFileName().equals(fileName)) {
                requestedFile = file;
                break;
            }

        }

        if (requestedFile == null)
            throw new WebApplicationException(404);

        // logger.trace("I am here with file: "
        // +requestedFile.getAbsoluteFileName());

        File file = new File(requestedFile.getAbsoluteFileName());
        if (!file.exists())
            throw new WebApplicationException(404);

        String mt = new MimetypesFileTypeMap().getContentType(file);
        return Response.ok(file, mt).build();
    }

    /**
     * PUT method for updating or creating an instance of FileResource
     * 
     * @param content
     *            representation for the resource
     * @return an HTTP response with content of the updated or created resource.
     */
    @PUT
    @Consumes("application/xml")
    public void putXml(String content) {
    }
}