/*
* Copyright (c) 2017.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.itfsw.query.builder.support.parser.mongodb;
import com.itfsw.query.builder.support.model.IGroup;
import com.itfsw.query.builder.support.model.JsonRule;
import com.itfsw.query.builder.support.model.enums.EnumCondition;
import com.itfsw.query.builder.support.parser.IGroupParser;
import com.itfsw.query.builder.support.parser.JsonRuleParser;
import com.mongodb.BasicDBList;
import com.mongodb.BasicDBObject;
/**
* ---------------------------------------------------------------------------
*
* ---------------------------------------------------------------------------
* @author: hewei
* @time:2017/11/9 13:18
* ---------------------------------------------------------------------------
*/
public class DefaultGroupParser implements IGroupParser {
/**
* 解析
* @param group
* @param parser
* @return
*/
@Override
public Object parse(IGroup group, JsonRuleParser parser) {
// rules
BasicDBList operates = new BasicDBList();
for (JsonRule jsonRule : group.getRules()) {
operates.add(parser.parse(jsonRule));
}
// AND or OR
BasicDBObject andOrObj = new BasicDBObject();
andOrObj.append(EnumCondition.AND.equals(group.getCondition()) ? "$and" : "$or", operates);
// Not
if (group.getNot() != null && group.getNot()) {
BasicDBList list = new BasicDBList();
list.add(andOrObj);
return new BasicDBObject("$nor", list);
}
return andOrObj;
}
}
