Java tutorial
/** * The MIT License * Copyright (c) 2011 Kuali Mobility Team * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package org.kuali.mobility.academics.dao; import org.apache.commons.collections.CollectionUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.kuali.mobility.academics.entity.CatalogNumber; import org.kuali.mobility.academics.entity.SearchResult; import org.kuali.mobility.academics.entity.Section; import org.kuali.mobility.academics.util.AcademicsConstants; import org.kuali.mobility.academics.util.CatalogNumberPredicate; import org.kuali.mobility.shared.entity.ToolMessage; import org.kuali.mobility.shared.entity.ToolMessageType; import javax.xml.bind.JAXBContext; import javax.xml.bind.JAXBException; import javax.xml.bind.Unmarshaller; import java.io.InputStream; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; /** * @author Kuali Mobility Team (mobility.dev@kuali.org) */ public class AcademicsDaoImplDemo extends AcademicsDaoImpl { private static Logger LOG = LoggerFactory.getLogger(AcademicsDaoImplDemo.class); private List<CatalogNumber> catalogNumbers = new ArrayList<CatalogNumber>(); private Map<String, List<CatalogNumber>> demoCache = new HashMap<String, List<CatalogNumber>>(); private void initCatalogNumbers() { if (getCatalogNumbers().isEmpty()) { for (int i = 0; i < 10; i++) { LOG.debug("Attempting to load file named: CatalogNumber" + i + ".xml"); CatalogNumber catalogNumber = null; try { JAXBContext jc = JAXBContext.newInstance(CatalogNumber.class); Unmarshaller um = jc.createUnmarshaller(); InputStream in = this.getClass().getResourceAsStream("/CatalogNumber" + i + ".xml"); catalogNumber = (CatalogNumber) um.unmarshal(in); getCatalogNumbers().add(catalogNumber); } catch (JAXBException jbe) { LOG.error(jbe.getLocalizedMessage(), jbe); } } } } public List<CatalogNumber> getCatalogNumbers(Map<String, String> query) { List<CatalogNumber> lCatalogNumbers = new ArrayList<CatalogNumber>(); StringBuilder keyBuilder = new StringBuilder(); keyBuilder.append(query.get(AcademicsConstants.TERM_ID)); keyBuilder.append("#"); keyBuilder.append(query.get(AcademicsConstants.SUBJECT_ID)); String key = keyBuilder.toString(); if (getDemoCache().containsKey(key)) { lCatalogNumbers = getDemoCache().get(key); } else { initCatalogNumbers(); for (CatalogNumber c : getCatalogNumbers()) { if ((100 - (Math.random() * (100 - 1))) < 50) { lCatalogNumbers.add(c); } } getDemoCache().put(key, lCatalogNumbers); } return lCatalogNumbers; } public List<Section> getSections(Map<String, String> query) { List<Section> lSection = new ArrayList<Section>(); StringBuilder keyBuilder = new StringBuilder(); keyBuilder.append(query.get(AcademicsConstants.TERM_ID)); keyBuilder.append("#"); keyBuilder.append(query.get(AcademicsConstants.SUBJECT_ID)); String key = keyBuilder.toString(); if (getDemoCache().containsKey(key)) { List<CatalogNumber> numbers = getDemoCache().get(key); CatalogNumber number = (CatalogNumber) CollectionUtils.find(numbers, new CatalogNumberPredicate(query.get(AcademicsConstants.CATALOG_NUMBER))); for (Section s : number.getSections()) { s.setSubjectId(query.get(AcademicsConstants.SUBJECT_ID)); s.setCatalogNumber(query.get(AcademicsConstants.CATALOG_NUMBER)); lSection.add(s); } } return lSection; } public Section getSectionDetail(Section section) { return section; } public Section getSectionDetail(String termId, String careerId, String subjectId, String catalogNumber, String sectionNumber) { Section lSection = null; StringBuilder keyBuilder = new StringBuilder(); keyBuilder.append(termId); keyBuilder.append("#"); keyBuilder.append(subjectId); String key = keyBuilder.toString(); if (getDemoCache().containsKey(key)) { List<CatalogNumber> numbers = getDemoCache().get(key); CatalogNumber number = (CatalogNumber) CollectionUtils.find(numbers, new CatalogNumberPredicate(catalogNumber)); for (Section s : number.getSections()) { if (sectionNumber.equalsIgnoreCase(s.getNumber())) { lSection = s; s.setSubjectId(subjectId); s.setCatalogNumber(catalogNumber); break; } } } return lSection; } public List<CatalogNumber> getCatalogNumbers() { return catalogNumbers; } public void setCatalogNumbers(List<CatalogNumber> catalogNumbers) { this.catalogNumbers = catalogNumbers; } public SearchResult getSearchResults(Map<String, String[]> query) { SearchResult searchResult = (SearchResult) getApplicationContext().getBean("academicsSearchResult"); if (null == getCatalogNumbers() || getCatalogNumbers().isEmpty()) { initCatalogNumbers(); } // Returning random results int i = (int) (Math.random() * getCatalogNumbers().size()); CatalogNumber number = getCatalogNumbers().get(i); searchResult.setSections(number.getSections()); if ((int) (Math.random() * 10) < 2) { ToolMessage message = new ToolMessage(); message.setType(ToolMessageType.ALERT); message.setLabel("Too Many Results"); message.setDescription( "Your search returned too many results to display, please refine your search criteria."); searchResult.addMessage(message); } if ((int) (Math.random() * 10) < 2) { ToolMessage message = new ToolMessage(); message.setType(ToolMessageType.ERROR); message.setLabel("Error"); message.setDescription("An error occurred while performing your search."); searchResult.addMessage(message); } return searchResult; } public Map<String, List<CatalogNumber>> getDemoCache() { return demoCache; } public void setDemoCache(Map<String, List<CatalogNumber>> demoCache) { this.demoCache = demoCache; } }