Java tutorial
/* * Copyright 2005-2013 shopxx.net. All rights reserved. * Support: http://www.shopxx.net * License: http://www.shopxx.net/license */ package com.hyeb.service; import java.math.BigDecimal; import java.util.List; import javax.annotation.Resource; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import com.hyeb.Page; import com.hyeb.Pageable; import com.hyeb.dao.ArticleDao; import com.hyeb.dao.ProductDao; import com.hyeb.entity.Article; import com.hyeb.entity.Product; import com.hyeb.entity.Product.OrderType; import org.apache.commons.lang.StringUtils; import org.apache.lucene.index.Term; import org.apache.lucene.queryparser.classic.ParseException; import org.apache.lucene.queryparser.classic.QueryParser; import org.apache.lucene.search.BooleanClause.Occur; import org.apache.lucene.search.BooleanQuery; import org.apache.lucene.search.FuzzyQuery; import org.apache.lucene.search.NumericRangeQuery; import org.apache.lucene.search.Query; import org.apache.lucene.search.Sort; import org.apache.lucene.search.SortField; import org.apache.lucene.search.TermQuery; import org.hibernate.search.jpa.FullTextEntityManager; import org.hibernate.search.jpa.FullTextQuery; import org.hibernate.search.jpa.Search; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import org.wltea.analyzer.lucene.IKAnalyzer; /** * Service - ? * * @author SHOP++ Team * @version 3.0 */ @Service("searchServiceImpl") @Transactional public class SearchServiceImpl implements SearchService { /** ? */ private static final int FUZZY_QUERY_MINIMUM_SIMILARITY = 50; @PersistenceContext protected EntityManager entityManager; @Resource(name = "articleDaoImpl") private ArticleDao articleDao; @Resource(name = "productDaoImpl") private ProductDao productDao; public void index() { index(Article.class); index(Product.class); } public void index(Class<?> type) { FullTextEntityManager fullTextEntityManager = Search.getFullTextEntityManager(entityManager); if (type == Article.class) { for (int i = 0; i < articleDao.count(); i += 20) { List<Article> articles = articleDao.findList(i, 20, null, null); for (Article article : articles) { fullTextEntityManager.index(article); } fullTextEntityManager.flushToIndexes(); fullTextEntityManager.clear(); articleDao.clear(); } } else if (type == Product.class) { for (int i = 0; i < productDao.count(); i += 20) { List<Product> products = productDao.findList(i, 20, null, null); for (Product product : products) { fullTextEntityManager.index(product); } fullTextEntityManager.flushToIndexes(); fullTextEntityManager.clear(); productDao.clear(); } } } public void index(Article article) { if (article != null) { FullTextEntityManager fullTextEntityManager = Search.getFullTextEntityManager(entityManager); fullTextEntityManager.index(article); } } public void index(Product product) { if (product != null) { FullTextEntityManager fullTextEntityManager = Search.getFullTextEntityManager(entityManager); fullTextEntityManager.index(product); } } public void purge() { purge(Article.class); purge(Product.class); } public void purge(Class<?> type) { FullTextEntityManager fullTextEntityManager = Search.getFullTextEntityManager(entityManager); if (type == Article.class) { fullTextEntityManager.purgeAll(Article.class); } else if (type == Product.class) { fullTextEntityManager.purgeAll(Product.class); } } public void purge(Article article) { if (article != null) { FullTextEntityManager fullTextEntityManager = Search.getFullTextEntityManager(entityManager); fullTextEntityManager.purge(Article.class, article.getId()); } } public void purge(Product product) { if (product != null) { FullTextEntityManager fullTextEntityManager = Search.getFullTextEntityManager(entityManager); fullTextEntityManager.purge(Product.class, product.getId()); } } @SuppressWarnings("unchecked") @Transactional(readOnly = true) public Page<Article> search(String keyword, Pageable pageable) { if (StringUtils.isEmpty(keyword)) { return new Page<Article>(); } if (pageable == null) { pageable = new Pageable(); } try { String text = QueryParser.escape(keyword); QueryParser titleParser = new QueryParser("title", new IKAnalyzer()); titleParser.setDefaultOperator(QueryParser.AND_OPERATOR); Query titleQuery = titleParser.parse(text); FuzzyQuery titleFuzzyQuery = new FuzzyQuery(new Term("title", text), FUZZY_QUERY_MINIMUM_SIMILARITY); Query contentQuery = new TermQuery(new Term("content", text)); Query isPublicationQuery = new TermQuery(new Term("isPublication", "true")); BooleanQuery textQuery = new BooleanQuery(); BooleanQuery query = new BooleanQuery(); textQuery.add(titleQuery, Occur.SHOULD); textQuery.add(titleFuzzyQuery, Occur.SHOULD); textQuery.add(contentQuery, Occur.SHOULD); query.add(isPublicationQuery, Occur.MUST); query.add(textQuery, Occur.MUST); FullTextEntityManager fullTextEntityManager = Search.getFullTextEntityManager(entityManager); FullTextQuery fullTextQuery = fullTextEntityManager.createFullTextQuery(query, Article.class); fullTextQuery.setSort(new Sort(new SortField[] { new SortField("isTop", SortField.Type.STRING, true), new SortField(null, SortField.Type.SCORE), new SortField("createDate", SortField.Type.LONG, true) })); fullTextQuery.setFirstResult((pageable.getPageNumber() - 1) * pageable.getPageSize()); fullTextQuery.setMaxResults(pageable.getPageSize()); return new Page<Article>(fullTextQuery.getResultList(), fullTextQuery.getResultSize(), pageable); } catch (ParseException e) { e.printStackTrace(); } return new Page<Article>(); } @SuppressWarnings("unchecked") @Transactional(readOnly = true) public Page<Product> search(String keyword, BigDecimal startPrice, BigDecimal endPrice, OrderType orderType, Pageable pageable) { if (StringUtils.isEmpty(keyword)) { return new Page<Product>(); } if (pageable == null) { pageable = new Pageable(); } try { String text = QueryParser.escape(keyword); TermQuery snQuery = new TermQuery(new Term("sn", text)); Query keywordQuery = new QueryParser("keyword", new IKAnalyzer()).parse(text); QueryParser nameParser = new QueryParser("name", new IKAnalyzer()); nameParser.setDefaultOperator(QueryParser.AND_OPERATOR); Query nameQuery = nameParser.parse(text); FuzzyQuery nameFuzzyQuery = new FuzzyQuery(new Term("name", text), FUZZY_QUERY_MINIMUM_SIMILARITY); TermQuery introductionQuery = new TermQuery(new Term("introduction", text)); TermQuery isMarketableQuery = new TermQuery(new Term("isMarketable", "true")); TermQuery isListQuery = new TermQuery(new Term("isList", "true")); TermQuery isGiftQuery = new TermQuery(new Term("isGift", "false")); BooleanQuery textQuery = new BooleanQuery(); BooleanQuery query = new BooleanQuery(); textQuery.add(snQuery, Occur.SHOULD); textQuery.add(keywordQuery, Occur.SHOULD); textQuery.add(nameQuery, Occur.SHOULD); textQuery.add(nameFuzzyQuery, Occur.SHOULD); textQuery.add(introductionQuery, Occur.SHOULD); query.add(isMarketableQuery, Occur.MUST); query.add(isListQuery, Occur.MUST); query.add(isGiftQuery, Occur.MUST); query.add(textQuery, Occur.MUST); if (startPrice != null && endPrice != null && startPrice.compareTo(endPrice) > 0) { BigDecimal temp = startPrice; startPrice = endPrice; endPrice = temp; } if (startPrice != null && startPrice.compareTo(new BigDecimal(0)) >= 0 && endPrice != null && endPrice.compareTo(new BigDecimal(0)) >= 0) { NumericRangeQuery<Double> numericRangeQuery = NumericRangeQuery.newDoubleRange("price", startPrice.doubleValue(), endPrice.doubleValue(), true, true); query.add(numericRangeQuery, Occur.MUST); } else if (startPrice != null && startPrice.compareTo(new BigDecimal(0)) >= 0) { NumericRangeQuery<Double> numericRangeQuery = NumericRangeQuery.newDoubleRange("price", startPrice.doubleValue(), null, true, false); query.add(numericRangeQuery, Occur.MUST); } else if (endPrice != null && endPrice.compareTo(new BigDecimal(0)) >= 0) { NumericRangeQuery<Double> numericRangeQuery = NumericRangeQuery.newDoubleRange("price", null, endPrice.doubleValue(), false, true); query.add(numericRangeQuery, Occur.MUST); } FullTextEntityManager fullTextEntityManager = Search.getFullTextEntityManager(entityManager); FullTextQuery fullTextQuery = fullTextEntityManager.createFullTextQuery(query, Product.class); SortField[] sortFields = null; if (orderType == OrderType.priceAsc) { sortFields = new SortField[] { new SortField("price", SortField.Type.DOUBLE, false), new SortField("createDate", SortField.Type.LONG, true) }; } else if (orderType == OrderType.priceDesc) { sortFields = new SortField[] { new SortField("price", SortField.Type.DOUBLE, true), new SortField("createDate", SortField.Type.LONG, true) }; } else if (orderType == OrderType.salesDesc) { sortFields = new SortField[] { new SortField("sales", SortField.Type.INT, true), new SortField("createDate", SortField.Type.LONG, true) }; } else if (orderType == OrderType.scoreDesc) { sortFields = new SortField[] { new SortField("score", SortField.Type.INT, true), new SortField("createDate", SortField.Type.LONG, true) }; } else if (orderType == OrderType.dateDesc) { sortFields = new SortField[] { new SortField("createDate", SortField.Type.LONG, true) }; } else { sortFields = new SortField[] { new SortField("isTop", SortField.Type.STRING, true), new SortField(null, SortField.Type.SCORE), new SortField("modifyDate", SortField.Type.LONG, true) }; } fullTextQuery.setSort(new Sort(sortFields)); fullTextQuery.setFirstResult((pageable.getPageNumber() - 1) * pageable.getPageSize()); fullTextQuery.setMaxResults(pageable.getPageSize()); return new Page<Product>(fullTextQuery.getResultList(), fullTextQuery.getResultSize(), pageable); } catch (Exception e) { e.printStackTrace(); } return new Page<Product>(); } }