org.nema.medical.mint.server.controller.StudyRootController.java Source code

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Here is the source code for org.nema.medical.mint.server.controller.StudyRootController.java

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/*
 *   Copyright 2010 MINT Working Group
 *
 *   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 org.nema.medical.mint.server.controller;

import org.apache.commons.io.FileUtils;
import org.apache.log4j.Logger;
import org.jibx.runtime.BindingDirectory;
import org.jibx.runtime.IBindingFactory;
import org.jibx.runtime.IMarshallingContext;
import org.jibx.runtime.JiBXException;
import org.nema.medical.mint.changelog.ChangeOperation;
import org.nema.medical.mint.server.domain.Change;
import org.nema.medical.mint.server.domain.ChangeDAO;
import org.nema.medical.mint.server.domain.MINTStudy;
import org.nema.medical.mint.server.domain.StudyDAO;
import org.nema.medical.mint.studies.StudyRoot;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.sql.Timestamp;
import java.util.LinkedList;
import java.util.UUID;

@Controller
public class StudyRootController {

    @Autowired
    protected String xmlStylesheet;

    @Autowired
    protected StudyDAO studyDAO;

    @Autowired
    protected File studiesRoot;

    @Autowired
    protected File typesRoot;

    @Autowired
    protected Integer fileResponseBufferSize;

    @Autowired
    protected ChangeDAO changeDAO;

    @RequestMapping(method = RequestMethod.GET, value = "/studies/{uuid}")
    public void studyRoot(@PathVariable("uuid") final String uuid, final HttpServletRequest req,
            final HttpServletResponse res) throws IOException, JiBXException {

        final Utils.StudyStatus studyStatus = Utils.validateStudyStatus(studiesRoot, uuid, res, studyDAO);
        if (studyStatus != Utils.StudyStatus.OK) {
            return;
        }

        final MINTStudy study = studyDAO.findStudy(uuid);
        final File studyDir = new File(studiesRoot, uuid);
        final File[] studyTypeFiles = studyDir.listFiles(new FilenameFilter() {

            public boolean accept(File dir, String name) {
                File typeCandidate = new File(dir, name);
                File typeRoot = new File(typesRoot, name + ".xml");
                if (typeCandidate.isDirectory() & typeRoot.exists()) {
                    return true;
                }
                return false;
            }

        });
        LinkedList<String> studyTypeFileList = new LinkedList<String>();

        for (File studyTypeFile : studyTypeFiles) {
            studyTypeFileList.add(studyTypeFile.getName());
        }

        Timestamp lastUpdated;
        if (study.getLastModified() != null) {
            lastUpdated = study.getLastModified();
        } else {
            lastUpdated = study.getDateTime();
        }

        StudyRoot studyRoot = new StudyRoot(study.getID(), lastUpdated, study.getStudyVersion(), studyTypeFileList);

        IBindingFactory bfact = BindingDirectory.getFactory("studyRoot", StudyRoot.class);
        IMarshallingContext mctx = bfact.createMarshallingContext();
        mctx.setIndent(2);
        mctx.startDocument("UTF-8", null, res.getOutputStream());
        mctx.getXmlWriter().writePI("xml-stylesheet", xmlStylesheet);
        mctx.marshalDocument(studyRoot);
        mctx.endDocument();

    }

    @RequestMapping(method = RequestMethod.DELETE, value = "/studies/{uuid}")
    public void deleteStudy(@PathVariable("uuid") final String uuid, final HttpServletRequest req,
            final HttpServletResponse res) throws IOException {
        final Utils.StudyStatus studyStatus = Utils.validateStudyStatus(studiesRoot, uuid, res, studyDAO);
        if (studyStatus != Utils.StudyStatus.OK) {
            return;
        }

        deleteStudy(uuid, studiesRoot, req.getRemoteUser(), req.getRemoteHost(), changeDAO, studyDAO);
        res.setStatus(204);
    }

    public static void deleteStudy(final String uuid, final File studiesRoot, final String remoteUser,
            final String remoteHost, final ChangeDAO changeDAO, final StudyDAO studyDAO) throws IOException {
        final File studyDir = new File(studiesRoot, uuid);
        FileUtils.deleteDirectory(studyDir);

        final Change lastChange = changeDAO.findLastChange(uuid);
        if (lastChange == null) {
            throw new IOException("No changes in database for study UUID " + uuid);
        }

        final Change deleteInfo = new Change();
        deleteInfo.setId(UUID.randomUUID().toString());
        deleteInfo.setType("DICOM");
        deleteInfo.setStudyID(uuid);
        deleteInfo.setRemoteUser(remoteUser);
        deleteInfo.setRemoteHost(remoteHost);
        deleteInfo.setIndex(lastChange.getIndex() + 1);
        deleteInfo.setOperation(ChangeOperation.DELETE);
        changeDAO.saveChange(deleteInfo);

        final MINTStudy studyData = new MINTStudy();
        studyData.setID(uuid);
        studyData.setDateTime(MINTStudy.now());
        studyData.setStudyVersion(-1);
        studyDAO.updateStudy(studyData);
    }

    private static final Logger LOG = Logger.getLogger(StudyRootController.class);

}