package org.jrest4guice.search.hs.service;
import java.util.Date;
import java.util.List;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.index.Term;
import org.apache.lucene.queryParser.MultiFieldQueryParser;
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.search.BooleanClause;
import org.apache.lucene.search.BooleanQuery;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TermQuery;
import org.hibernate.search.FullTextSession;
import org.jrest4guice.persistence.BaseEntityManager;
import org.jrest4guice.search.hs.entity.Song;
import org.jrest4guice.transaction.annotations.Transactional;
import org.jrest4guice.transaction.annotations.TransactionalType;
import com.google.inject.Inject;
@Transactional
@SuppressWarnings("unchecked")
public class SongService {
@Inject
private BaseEntityManager<String, Song> entityManager;
@Inject
private FullTextSession fullTextSession;
public void init() {
for (int i = 3; i < 7; i++) {
Song song = new Song();
song.setArtist("群星");
song.setName("北京欢迎你");
song.setLyric("北京欢迎你，welcome to beijing,第29届奥林匹克运动会");
song.setTime(new Date());
song.setArtistCityId(i % 8);
this.entityManager.create(song);
}
}
public void deleteAll(){
List<Song> songs = this.entityManager.listAll();
for(Song song:songs)
this.entityManager.delete(song);
// this.entityManager.executeUpdate("delete from Song");
}
public String addSong(Song song){
this.entityManager.create(song);
return song.getId();
}
public boolean deleteSong(String id){
return this.entityManager.deleteById(id);
}
public void updateSong(Song song){
this.entityManager.update(song);
}
public void deleteSongs(String condition,String artistCityId){
List<Song> songs = this.search(condition, artistCityId);
if(songs != null){
for(Song song:songs)
this.deleteSong(song.getId());
}
}
@Transactional(type = TransactionalType.READOLNY)
public List<Song> search(String condition,String artistCityId) {
try {
BooleanQuery booleanQuery = new BooleanQuery();
MultiFieldQueryParser parser = new MultiFieldQueryParser(
new String[] { "name", "lyric" }, new StandardAnalyzer());
Query query;
query = parser.parse(condition);
booleanQuery.add(query, BooleanClause.Occur.MUST);
if(artistCityId != null){
TermQuery tq = new TermQuery(new Term("artistCityId", artistCityId));
booleanQuery.add(tq, BooleanClause.Occur.MUST);
}
org.hibernate.Query hibQuery = fullTextSession.createFullTextQuery(
booleanQuery, Song.class);
return hibQuery.list();
} catch (ParseException e) {
e.printStackTrace();
}
return null;
}
}