Java tutorial
/* * Licensed to the Sakai Foundation (SF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The SF licenses this file * to you 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.sakaiproject.nakamura.message.search; import org.apache.felix.scr.annotations.Component; import org.apache.felix.scr.annotations.Properties; import org.apache.felix.scr.annotations.Property; import org.apache.felix.scr.annotations.Reference; import org.apache.felix.scr.annotations.Service; import org.apache.jackrabbit.util.ISO9075; import org.apache.sling.api.SlingHttpServletRequest; import org.apache.sling.commons.json.JSONException; import org.apache.sling.commons.json.io.JSONWriter; import org.apache.solr.client.solrj.util.ClientUtils; import org.osgi.framework.Constants; import org.sakaiproject.nakamura.api.lite.Session; import org.sakaiproject.nakamura.api.lite.StorageClientUtils; import org.sakaiproject.nakamura.api.message.LiteMessagingService; import org.sakaiproject.nakamura.api.search.SearchConstants; import org.sakaiproject.nakamura.api.search.SearchResponseDecorator; import org.sakaiproject.nakamura.api.search.solr.Query; import org.sakaiproject.nakamura.api.search.solr.SolrSearchConstants; import org.sakaiproject.nakamura.api.search.solr.SolrSearchException; import org.sakaiproject.nakamura.api.search.solr.SolrSearchResultSet; import org.sakaiproject.nakamura.api.search.solr.SolrSearchServiceFactory; import org.sakaiproject.nakamura.api.user.UserConstants; import org.slf4j.Logger; import org.slf4j.LoggerFactory; @Component @Service @Properties(value = { @Property(name = Constants.SERVICE_VENDOR, value = "The Sakai Foundation"), @Property(name = Constants.SERVICE_DESCRIPTION, value = "Processor for message search results."), @Property(name = SolrSearchConstants.REG_SEARCH_DECORATOR_NAMES, value = "Message") }) public class MessageSearchResponseDecorator implements SearchResponseDecorator { private static final Logger LOGGER = LoggerFactory.getLogger(MessageSearchResponseDecorator.class); @Reference protected LiteMessagingService messagingService; @Reference protected SolrSearchServiceFactory searchServiceFactory; public void decorateSearchResponse(SlingHttpServletRequest request, JSONWriter writer) throws JSONException { writer.key("unread"); long count = 0; // We don't do queries for anonymous users. (Possible ddos hole). String userID = request.getRemoteUser(); if (UserConstants.ANON_USERID.equals(userID)) { writer.value(count); return; } try { final Session session = StorageClientUtils .adaptToSession(request.getResourceResolver().adaptTo(javax.jcr.Session.class)); String store = messagingService.getFullPathToStore(userID, session); store = ISO9075.encodePath(store); store = store.substring(0, store.length() - 1); String queryString = "path:" + ClientUtils.escapeQueryChars(store) + " AND resourceType:sakai/message AND type:internal AND messagebox:inbox AND read:false"; Query query = new Query(queryString); SolrSearchResultSet resultSet = searchServiceFactory.getSearchResultSet(request, query, false); count = resultSet.getSize(); } catch (SolrSearchException e) { LOGGER.error(e.getMessage()); } finally { writer.value(count); } } }