Java tutorial
/* * ConcourseConnect * Copyright 2009 Concursive Corporation * http://www.concursive.com * * This file is part of ConcourseConnect, an open source social business * software and community platform. * * Concursive ConcourseConnect is free software: you can redistribute it and/or * modify it under the terms of the GNU Affero General Public License as published * by the Free Software Foundation, version 3 of the License. * * Under the terms of the GNU Affero General Public License you must release the * complete source code for any application that uses any part of ConcourseConnect * (system header files and libraries used by the operating system are excluded). * These terms must be included in any work that has ConcourseConnect components. * If you are developing and distributing open source applications under the * GNU Affero General Public License, then you are free to use ConcourseConnect * under the GNU Affero General Public License. * * If you are deploying a web site in which users interact with any portion of * ConcourseConnect over a network, the complete source code changes must be made * available. For example, include a link to the source archive directly from * your web site. * * For OEMs, ISVs, SIs and VARs who distribute ConcourseConnect with their * products, and do not license and distribute their source code under the GNU * Affero General Public License, Concursive provides a flexible commercial * license. * * To anyone in doubt, we recommend the commercial license. Our commercial license * is competitively priced and will eliminate any confusion about how * ConcourseConnect can be used and distributed. * * ConcourseConnect 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 Affero General Public License for more * details. * * You should have received a copy of the GNU Affero General Public License * along with ConcourseConnect. If not, see <http://www.gnu.org/licenses/>. * * Attribution Notice: ConcourseConnect is an Original Work of software created * by Concursive Corporation */ package com.concursive.connect.web.modules.classifieds.dao; import com.concursive.commons.content.ContentUtils; import com.concursive.connect.indexer.IIndexerService; import com.concursive.connect.indexer.Indexer; import com.concursive.connect.indexer.IndexerContext; import com.concursive.connect.web.modules.login.utils.UserUtils; import com.concursive.connect.web.modules.profile.dao.Project; import com.concursive.connect.web.modules.profile.utils.ProjectUtils; import org.apache.lucene.document.Document; import org.apache.lucene.document.Field; import org.apache.lucene.index.IndexWriter; import org.apache.lucene.index.Term; import java.io.IOException; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.text.SimpleDateFormat; /** * Class for working with the Lucene search engine * * @author Kailash Bhoopalam * @created May 27, 2008 */ public class ClassifiedIndexer implements Indexer { /** * Given a database and a Lucene writer, this method will add content to the * searchable index * * @param writer Description of the Parameter * @param db Description of the Parameter * @param context servlet context * @throws SQLException Description of the Exception * @throws IOException Description of the Exception */ public void add(IIndexerService writer, Connection db, IndexerContext context) throws SQLException, IOException { int count = 0; PreparedStatement pst = db.prepareStatement( "SELECT classified_id, project_id, title, description, publish_date, expiration_date, modified, classified_category_id " + "FROM project_classified " + "WHERE project_id > -1 "); ResultSet rs = pst.executeQuery(); while (rs.next() && context.getEnabled()) { ++count; // read the record Classified classified = new Classified(); classified.setId(rs.getInt("classified_id")); classified.setProjectId(rs.getInt("project_id")); classified.setTitle(rs.getString("title")); classified.setDescription(rs.getString("description")); classified.setPublishDate(rs.getTimestamp("publish_date")); classified.setExpirationDate(rs.getTimestamp("expiration_date")); classified.setModified(rs.getTimestamp("modified")); classified.setCategoryId(rs.getInt("classified_category_id")); // add to index writer.indexAddItem(classified, false); } rs.close(); pst.close(); if (System.getProperty("DEBUG") != null) { System.out.println("ClassifiedIndexer-> Finished: " + count); } } /** * Description of the Method * * @param writer Description of the Parameter * @param item Description of the Parameter * @param modified Description of the Parameter * @throws IOException Description of the Exception */ public void add(IndexWriter writer, Object item, boolean modified) throws IOException { Classified classified = (Classified) item; // add the document Document document = new Document(); document.add(new Field("type", "classifieds", Field.Store.YES, Field.Index.UN_TOKENIZED)); document.add(new Field("classifiedId", String.valueOf(classified.getId()), Field.Store.YES, Field.Index.UN_TOKENIZED)); document.add(new Field("projectId", String.valueOf(classified.getProjectId()), Field.Store.YES, Field.Index.UN_TOKENIZED)); if (classified.getCategoryId() != -1) { document.add(new Field("categoryId", String.valueOf(classified.getCategoryId()), Field.Store.YES, Field.Index.UN_TOKENIZED)); } document.add(new Field("location", String.valueOf(ProjectUtils.loadProject(classified.getProjectId()).getLocation()), Field.Store.YES, Field.Index.TOKENIZED)); document.add(new Field("instanceId", String.valueOf(ProjectUtils.loadProject(classified.getProjectId()).getInstanceId()), Field.Store.YES, Field.Index.UN_TOKENIZED)); if (classified.getProjectId() > -1) { // use the project's general access to speedup guest projects Project project = ProjectUtils.loadProject(classified.getProjectId()); document.add(new Field("projectCategoryId", String.valueOf(project.getCategoryId()), Field.Store.YES, Field.Index.UN_TOKENIZED)); document.add(new Field("guests", (project.getFeatures().getAllowGuests() ? "1" : "0"), Field.Store.YES, Field.Index.UN_TOKENIZED)); document.add(new Field("participants", (project.getFeatures().getAllowParticipants() ? "1" : "0"), Field.Store.YES, Field.Index.UN_TOKENIZED)); // determine if membership is needed for this content based on a guest's access to the data int membership = project.getFeatures().getMembershipRequired() ? 1 : 0; if (membership == 1 && ProjectUtils.hasAccess(project.getId(), UserUtils.createGuestUser(), "project-classifieds-view")) { membership = 0; } document.add( new Field("membership", String.valueOf(membership), Field.Store.YES, Field.Index.UN_TOKENIZED)); } document.add(new Field("title", classified.getTitle(), Field.Store.YES, Field.Index.TOKENIZED)); document.add(new Field("titleFull", classified.getTitle(), Field.Store.YES, Field.Index.UN_TOKENIZED)); document.add(new Field("titleLower", classified.getTitle().toLowerCase(), Field.Store.YES, Field.Index.UN_TOKENIZED)); document.add(new Field("contents", classified.getTitle() + " " + ContentUtils.toText(classified.getDescription()), Field.Store.YES, Field.Index.TOKENIZED)); SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMdd"); if (classified.getPublishDate() != null) { document.add(new Field("modified", String.valueOf(formatter.format(classified.getPublishDate())), Field.Store.YES, Field.Index.UN_TOKENIZED)); document.add(new Field("published", String.valueOf(formatter.format(classified.getPublishDate())), Field.Store.YES, Field.Index.UN_TOKENIZED)); } if (classified.getExpirationDate() != null) { document.add(new Field("expired", String.valueOf(formatter.format(classified.getExpirationDate())), Field.Store.YES, Field.Index.UN_TOKENIZED)); } writer.addDocument(document); if (System.getProperty("DEBUG") != null && modified) { System.out.println("ClassifiedIndexer-> Added: " + classified.getId()); } } /** * Gets the unique searchTerm attribute of the NewsArticleIndexer class * * @param item Description of the Parameter * @return The searchTerm value */ public Term getSearchTerm(Object item) { Classified classified = (Classified) item; return new Term("classifiedId", String.valueOf(classified.getId())); } /** * Gets the deleteTerm attribute of the NewsArticleIndexer class * * @param item Description of the Parameter * @return The deleteTerm value */ public Term getDeleteTerm(Object item) { Classified classified = (Classified) item; return new Term("classifiedId", String.valueOf(classified.getId())); } }