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/*
* Copyright (C) 2008-2019, Juick
*
* This program 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, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.juick.service;
import com.juick.model.User;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;
import javax.inject.Inject;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
/**
* Created by aalexeev on 11/18/16.
*/
@Repository
@Transactional(readOnly = true)
public class SphinxSearchService extends BaseJdbcService implements SearchService {
private static final int DEFAULT_MAX_RESULT = 20;
private int maxResult = DEFAULT_MAX_RESULT;
@Inject
UserService userService;
boolean isOneWord(String searchString) {
return searchString.split("[^\\S\\+]+").length == 1;
}
String sortHint() {
return "extended:@weight desc, @id desc";
}
String keywordBoost(String searchString) {
return isOneWord(searchString) ? String.format("%s^3", searchString) : searchString;
}
@Override
public List<Integer> searchInAllMessages(User visitor, final String searchString, final int page) {
if (StringUtils.isBlank(searchString))
return Collections.emptyList();
Map<String, String> sphinxQuery = new HashMap<>();
sphinxQuery.put("limit", String.valueOf(maxResult));
sphinxQuery.put("mode", "any");
sphinxQuery.put("sort", sortHint());
String usersFilter = userService.getUserBLUsers(visitor.getUid()).stream().map(u -> String.valueOf(u.getUid())).collect(Collectors.joining(","));
sphinxQuery.put("!filter", "user_id," + usersFilter);
if (isOneWord(searchString)) {
sphinxQuery.put("ranker", "bm25");
}
if (page > 0) {
sphinxQuery.put("offset", String.valueOf(page * maxResult));
}
return getJdbcTemplate().queryForList(
String.format("SELECT id FROM search WHERE query = '%s;%s'", keywordBoost(searchString),
sphinxQuery.entrySet().stream().map(Object::toString)
.collect(Collectors.joining(";"))), Integer.class);
}
@Override
public List<Integer> searchByStringAndUser(User visitor, final String searchString, final int userId, int page) {
if (StringUtils.isBlank(searchString))
return Collections.emptyList();
Map<String, String> sphinxQuery = new HashMap<>();
sphinxQuery.put("limit", String.valueOf(maxResult));
sphinxQuery.put("mode", "any");
sphinxQuery.put("sort", sortHint());
if (page > 0) {
sphinxQuery.put("offset", String.valueOf(page * maxResult));
}
return getJdbcTemplate().queryForList(
String.format("SELECT id FROM search WHERE query = '%s;%s;filter=user_id,%d'", searchString,
sphinxQuery.entrySet().stream().map(Object::toString)
.collect(Collectors.joining(";")), userId), Integer.class);
}
@Override
public void setMaxResult(int maxResult) {
if (maxResult <= 0)
throw new IllegalArgumentException("maxResult value (" + maxResult + ") must be greater then 0");
this.maxResult = maxResult;
}
}
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