org.etudes.mneme.tool.ImportMnemeView.java Source code

Introduction

Here is the source code for org.etudes.mneme.tool.ImportMnemeView.java

Source

/**********************************************************************************
 * $URL$
 * $Id$
 ***********************************************************************************
 *
 * Copyright (c) 2010 Etudes, Inc.
 * 
 * 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.etudes.mneme.tool;

import java.io.IOException;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

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

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.etudes.ambrosia.api.Context;
import org.etudes.ambrosia.api.Values;
import org.etudes.ambrosia.util.ControllerImpl;
import org.etudes.mneme.api.AssessmentPermissionException;
import org.etudes.mneme.api.Ent;
import org.etudes.mneme.api.ImportService;
import org.etudes.mneme.api.PoolService;
import org.sakaiproject.tool.api.ToolManager;
import org.sakaiproject.util.StringUtil;
import org.sakaiproject.util.Web;

/**
 * The /import_mneme view for the mneme tool.
 */
public class ImportMnemeView extends ControllerImpl {
    /** Our log. */
    private static Log M_log = LogFactory.getLog(ImportMnemeView.class);

    /** Dependency: ImportService */
    protected ImportService importService = null;

    /** Pool Service */
    protected PoolService poolService = null;

    /** tool manager reference. */
    protected ToolManager toolManager = null;

    /**
     * Shutdown.
     */
    public void destroy() {
        M_log.info("destroy()");
    }

    /**
     * {@inheritDoc}
     */
    public void get(HttpServletRequest req, HttpServletResponse res, Context context, String[] params)
            throws IOException {
        // [2] source context - rest the return destination
        if (params.length < 3) {
            throw new IllegalArgumentException();
        }
        String sourceContext = params[2];
        String destination = null;

        if (params.length > 3) {
            destination = "/" + StringUtil.unsplit(params, 3, params.length - 3, "/");
        }

        // if not specified, go to the main assessments page
        else {
            destination = "/assessments";
        }
        context.put("return", destination);

        // TODO: change to assessment service ...
        if (!this.poolService.allowManagePools(toolManager.getCurrentPlacement().getContext())) {
            // redirect to error
            res.sendRedirect(res.encodeRedirectURL(Web.returnUrl(req, "/error/" + Errors.unauthorized)));
            return;
        }

        // the list of assessments for this site
        List<Ent> assessments = this.importService.getAssessments(sourceContext,
                toolManager.getCurrentPlacement().getContext());
        context.put("assessments", assessments);

        // render
        uiService.render(ui, context);
    }

    /**
     * Final initialization, once all dependencies are set.
     */
    public void init() {
        super.init();
        M_log.info("init()");
    }

    /**
     * {@inheritDoc}
     */
    public void post(HttpServletRequest req, HttpServletResponse res, Context context, String[] params)
            throws IOException {
        // [2] source context - rest the return destination
        if (params.length < 3) {
            throw new IllegalArgumentException();
        }
        String sourceContext = params[2];
        String returnDestination = null;

        if (params.length > 3) {
            returnDestination = "/" + StringUtil.unsplit(params, 3, params.length - 3, "/");
        }

        // if not specified, go to the main assessments page
        else {
            returnDestination = "/assessments";
        }

        String toolContext = toolManager.getCurrentPlacement().getContext();

        // TODO: change to assessment service ...
        if (!this.poolService.allowManagePools(toolContext)) {
            // redirect to error
            res.sendRedirect(res.encodeRedirectURL(Web.returnUrl(req, "/error/" + Errors.unauthorized)));
            return;
        }

        Values selectedAssessments = this.uiService.newValues();
        context.put("selectedAssessments", selectedAssessments);

        // read the form
        String destination = uiService.decode(req, context);

        // import the assessments
        if ("IMPORT".equals(destination)) {
            Set<String> assessmentIds = new HashSet<String>();
            for (String id : selectedAssessments.getValues()) {
                assessmentIds.add(id);
            }

            try {
                this.importService.importMneme(assessmentIds, sourceContext, toolContext);
            } catch (AssessmentPermissionException e) {
                // redirect to error
                res.sendRedirect(res.encodeRedirectURL(Web.returnUrl(req, "/error/" + Errors.unauthorized)));
                return;
            }

            destination = returnDestination;
        }

        res.sendRedirect(res.encodeRedirectURL(Web.returnUrl(req, destination)));
    }

    /**
     * Set the ImportService
     * 
     * @param service
     *        the ImportService.
     */
    public void setImportService(ImportService service) {
        this.importService = service;
    }

    /**
     * @param poolService
     *        the poolService to set
     */
    public void setPoolService(PoolService poolService) {
        this.poolService = poolService;
    }

    /**
     * Set the tool manager.
     * 
     * @param manager
     *        The tool manager.
     */
    public void setToolManager(ToolManager manager) {
        toolManager = manager;
    }
}