com.liferay.knowledgebase.article.portlet.ArticlePortlet.java Source code

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Here is the source code for com.liferay.knowledgebase.article.portlet.ArticlePortlet.java

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/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library 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 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library 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.
 */

package com.liferay.knowledgebase.article.portlet;

import com.liferay.knowledgebase.NoSuchArticleException;
import com.liferay.knowledgebase.NoSuchCommentException;
import com.liferay.knowledgebase.model.KBArticle;
import com.liferay.knowledgebase.portlet.BaseKBPortlet;
import com.liferay.knowledgebase.service.KBArticleServiceUtil;
import com.liferay.knowledgebase.service.permission.KBArticlePermission;
import com.liferay.knowledgebase.util.ActionKeys;
import com.liferay.knowledgebase.util.WebKeys;
import com.liferay.portal.NoSuchSubscriptionException;
import com.liferay.portal.kernel.servlet.SessionErrors;
import com.liferay.portal.kernel.servlet.SessionMessages;
import com.liferay.portal.kernel.util.GetterUtil;
import com.liferay.portal.kernel.util.ParamUtil;
import com.liferay.portal.kernel.workflow.WorkflowConstants;
import com.liferay.portal.security.auth.PrincipalException;
import com.liferay.portal.security.permission.PermissionChecker;
import com.liferay.portal.theme.ThemeDisplay;
import com.liferay.portal.util.PortalUtil;

import java.io.IOException;

import javax.portlet.ActionRequest;
import javax.portlet.ActionResponse;
import javax.portlet.PortletException;
import javax.portlet.PortletPreferences;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;

/**
 * @author Peter Shin
 * @author Brian Wing Shun Chan
 */
public class ArticlePortlet extends BaseKBPortlet {

    @Override
    public void render(RenderRequest renderRequest, RenderResponse renderResponse)
            throws IOException, PortletException {

        try {
            int status = getStatus(renderRequest);

            renderRequest.setAttribute(WebKeys.KNOWLEDGE_BASE_STATUS, status);

            KBArticle kbArticle = null;

            long resourcePrimKey = getResourcePrimKey(renderRequest);

            if (resourcePrimKey > 0) {
                kbArticle = KBArticleServiceUtil.getLatestKBArticle(resourcePrimKey, status);
            }

            renderRequest.setAttribute(WebKeys.KNOWLEDGE_BASE_KB_ARTICLE, kbArticle);
        } catch (Exception e) {
            if (e instanceof NoSuchArticleException || e instanceof PrincipalException) {

                SessionErrors.add(renderRequest, e.getClass());

                SessionMessages.add(renderRequest, PortalUtil.getPortletId(renderRequest)
                        + SessionMessages.KEY_SUFFIX_HIDE_DEFAULT_ERROR_MESSAGE);
            } else {
                throw new PortletException(e);
            }
        }

        super.render(renderRequest, renderResponse);
    }

    @Override
    protected void addSuccessMessage(ActionRequest actionRequest, ActionResponse actionResponse) {

        String actionName = ParamUtil.getString(actionRequest, ActionRequest.ACTION_NAME);

        if (actionName.equals("deleteKBArticle")) {
            return;
        }

        super.addSuccessMessage(actionRequest, actionResponse);
    }

    @Override
    protected void doDispatch(RenderRequest renderRequest, RenderResponse renderResponse)
            throws IOException, PortletException {

        if (SessionErrors.contains(renderRequest, NoSuchArticleException.class.getName())
                || SessionErrors.contains(renderRequest, NoSuchCommentException.class.getName())
                || SessionErrors.contains(renderRequest, NoSuchSubscriptionException.class.getName())
                || SessionErrors.contains(renderRequest, PrincipalException.class.getName())) {

            include(templatePath + "error.jsp", renderRequest, renderResponse);
        } else {
            super.doDispatch(renderRequest, renderResponse);
        }
    }

    protected long getResourcePrimKey(RenderRequest renderRequest) throws Exception {

        ThemeDisplay themeDisplay = (ThemeDisplay) renderRequest.getAttribute(WebKeys.THEME_DISPLAY);

        PortletPreferences preferences = renderRequest.getPreferences();

        long defaultValue = GetterUtil.getLong(preferences.getValue("resourcePrimKey", null));

        String mvcPath = ParamUtil.getString(renderRequest, "mvcPath");

        if (((defaultValue == 0) && mvcPath.equals(viewTemplate))
                || mvcPath.equals("/article/select_configuration_article.jsp")) {

            return 0;
        }

        long resourcePrimKey = ParamUtil.getLong(renderRequest, "resourcePrimKey", defaultValue);

        if ((resourcePrimKey == 0) || (resourcePrimKey != defaultValue)) {
            return resourcePrimKey;
        }

        PermissionChecker permissionChecker = themeDisplay.getPermissionChecker();

        if (!KBArticlePermission.contains(permissionChecker, defaultValue, ActionKeys.VIEW)) {

            return 0;
        }

        return defaultValue;
    }

    protected int getStatus(RenderRequest renderRequest) throws Exception {
        ThemeDisplay themeDisplay = (ThemeDisplay) renderRequest.getAttribute(WebKeys.THEME_DISPLAY);

        if (!themeDisplay.isSignedIn()) {
            return WorkflowConstants.STATUS_APPROVED;
        }

        String value = renderRequest.getParameter("status");
        int status = GetterUtil.getInteger(value);

        if ((value != null) && (status == WorkflowConstants.STATUS_APPROVED)) {
            return WorkflowConstants.STATUS_APPROVED;
        }

        long resourcePrimKey = getResourcePrimKey(renderRequest);

        if (resourcePrimKey == 0) {
            return WorkflowConstants.STATUS_APPROVED;
        }

        PermissionChecker permissionChecker = themeDisplay.getPermissionChecker();

        if (KBArticlePermission.contains(permissionChecker, resourcePrimKey, ActionKeys.UPDATE)) {

            return ParamUtil.getInteger(renderRequest, "status", WorkflowConstants.STATUS_ANY);
        }

        return WorkflowConstants.STATUS_APPROVED;
    }

}