IUSController.java

package net.sourceforge.solexatools.webapp.controller;

import java.util.HashMap;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import net.sourceforge.seqware.common.business.IUSService;
import net.sourceforge.seqware.common.model.IUS;
import net.sourceforge.seqware.common.model.Registration;
import net.sourceforge.seqware.common.util.Bool;
import net.sourceforge.solexatools.Security;
import net.sourceforge.solexatools.util.Constant;

import org.springframework.web.bind.ServletRequestDataBinder;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.multiaction.MultiActionController;

/**
 * <p>
 * IUSController class.
 * </p>
 * 
 * @author boconnor
 * @version $Id: $Id
 */
public class IUSController extends MultiActionController {
    private IUSService iusService;

    /**
     * <p>
     * Constructor for IUSController.
     * </p>
     */
    public IUSController() {
        super();
    }

    /**
     * <p>
     * Constructor for IUSController.
     * </p>
     * 
     * @param delegate
     *            a {@link java.lang.Object} object.
     */
    public IUSController(Object delegate) {
        super(delegate);
    }

    /**
     * <p>
     * Getter for the field <code>iusService</code>.
     * </p>
     * 
     * @return a {@link net.sourceforge.seqware.common.business.IUSService} object.
     */
    public IUSService getIusService() {
        return iusService;
    }

    /**
     * <p>
     * Setter for the field <code>iusService</code>.
     * </p>
     * 
     * @param iusService
     *            a {@link net.sourceforge.seqware.common.business.IUSService} object.
     */
    public void setIusService(IUSService iusService) {
        this.iusService = iusService;
    }

    /**
     * <p>
     * getIUSService.
     * </p>
     * 
     * @return a {@link net.sourceforge.seqware.common.business.IUSService} object.
     */
    public IUSService getIUSService() {
        return iusService;
    }

    /**
     * <p>
     * setIUSService.
     * </p>
     * 
     * @param iusService
     *            a {@link net.sourceforge.seqware.common.business.IUSService} object.
     */
    public void setIUSService(IUSService iusService) {
        this.iusService = iusService;
    }

    /**
     * Handles the user's request to delete their ius.
     * 
     * @param command
     *            IUS command object
     * @param request
     *            a {@link javax.servlet.http.HttpServletRequest} object.
     * @param response
     *            a {@link javax.servlet.http.HttpServletResponse} object.
     * @return a {@link org.springframework.web.servlet.ModelAndView} object.
     * @throws java.lang.Exception
     *             if any.
     */
    public ModelAndView handleDelete(HttpServletRequest request, HttpServletResponse response, IUS command) throws Exception {

        Registration registration = Security.getRegistration(request);
        if (registration == null) return new ModelAndView("redirect:/login.htm");

        ModelAndView modelAndView = null;
        HashMap<String, Object> model = new HashMap<>();
        IUS ius = getRequestedIUS(request);

        ServletContext context = this.getServletContext();
        boolean deleteRealFiles = Bool.parse(context.getInitParameter("delete.files.for.node.deletion"));

        if (ius != null) {
            if (registration.equals(ius.getOwner()) || registration.isLIMSAdmin()) {
                getIUSService().delete(ius, deleteRealFiles);
            }
        }
        modelAndView = new ModelAndView(getViewName(request), model);
        return modelAndView;
    }

    /**
     * Handles the user's request to delete their ius.
     * 
     * @param command
     *            IUS command object
     * @param request
     *            a {@link javax.servlet.http.HttpServletRequest} object.
     * @param response
     *            a {@link javax.servlet.http.HttpServletResponse} object.
     * @return a {@link org.springframework.web.servlet.ModelAndView} object.
     * @throws java.lang.Exception
     *             if any.
     */
    public ModelAndView handleUpdate(HttpServletRequest request, HttpServletResponse response, IUS command) throws Exception {

        Registration registration = Security.getRegistration(request);
        if (registration == null) return new ModelAndView("redirect:/login.htm");

        ModelAndView modelAndView = null;

        IUS newIus = command;
        IUS oldIus = getCurrentIus(request);
        if (newIus != null && oldIus != null) {
            new ServletRequestDataBinder(oldIus).bind(request);
            getIusService().update(oldIus);
            modelAndView = new ModelAndView("redirect:/search.htm");
        } else {
            modelAndView = new ModelAndView("redirect:/Error.htm");
        }

        request.getSession(false).removeAttribute("ius");

        return modelAndView;
    }

    /**
     * Handles the user's request to cancel.
     * 
     * @param command
     *            IUS command object
     * @return ModelAndView
     * @throws java.lang.Exception
     *             if any.
     * @param request
     *            a {@link javax.servlet.http.HttpServletRequest} object.
     * @param response
     *            a {@link javax.servlet.http.HttpServletResponse} object.
     */
    public ModelAndView handleCancel(HttpServletRequest request, HttpServletResponse response, IUS command) throws Exception {
        return new ModelAndView("redirect:/search.htm");
    }

    /**
     * Gets the IUS from the session.
     * 
     * @param request
     *            HttpServletRequest
     * 
     * @return instance of IUS from the session, or a new instance if the IUS is not in the session (e.g. the user is not logged in)
     */
    private IUS getCurrentIus(HttpServletRequest request) {
        HttpSession session = request.getSession(false);
        if (session != null) {
            Object ius = session.getAttribute("ius");
            if (ius != null) {
                return (IUS) ius;
            }
        }
        return new IUS();
    }

    private String getViewName(HttpServletRequest request) {
        String typeTree = (String) request.getSession(false).getAttribute("typeTree");
        String viewName = Constant.getViewName(typeTree);
        request.getSession(false).removeAttribute("typeTree");
        return viewName;
    }

    private IUS getRequestedIUS(HttpServletRequest request) {
        HttpSession session = request.getSession(false);
        IUS ius = null;
        String id = (String) request.getParameter("objectId");

        if (id != null) {
            Integer iusID = Integer.parseInt(id);
            ius = getIUSService().findByID(iusID);
        }
        return ius;
    }
}