iot.jcypher.database.util.QParamsUtil Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jcypher Show documentation

Provides seamlessly integrated Java access to graph databases (Neo4J) at different levels of abstraction.

There is a newer version: 4.2.0

/************************************************************************
 * Copyright (c) 2016 IoT-Solutions e.U.
 * 
 * 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 iot.jcypher.database.util;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import iot.jcypher.query.writer.IQueryParam;
import iot.jcypher.query.writer.QueryParam;
import iot.jcypher.query.writer.QueryParamSet;
import iot.jcypher.query.writer.WriterContext;

public class QParamsUtil {

	public static Map createQueryParams(WriterContext context) {
		Map paramsMap = null;
		if (QueryParam.isExtractParams(context)) {
			List params = QueryParamSet.getQueryParams(context);
			if (params != null) {
				for (IQueryParam iparam : params) {
					if (paramsMap == null)
						paramsMap = new HashMap();
					if (iparam instanceof QueryParamSet) {
						QueryParamSet paramSet = (QueryParamSet)iparam;
						if (paramSet.canUseSet() && paramSet.getQueryParams().size() > 1)
							writeAsSet(paramSet, paramsMap);
						else
							writeAsParams(paramSet, paramsMap);
					} else if (iparam instanceof QueryParam) {
						String key = ((QueryParam)iparam).getKey();
						Object val = ((QueryParam)iparam).getValue();
						val = convertVal(val);
						paramsMap.put(key, val);
					}
				}
			}
		}
		return paramsMap;
	}
	
	private static void writeAsSet(QueryParamSet paramSet,
			Map paramsMap) {
		Map set = new HashMap();
		paramsMap.put(paramSet.getKey(), set);
		for (QueryParam param : paramSet.getQueryParams()) {
			String key = param.getOrgName();
			Object val = param.getValue();
			val = convertVal(val);
			set.put(key, val);
		}
	}
	
	private static void writeAsParams(QueryParamSet paramSet,
			Map paramsMap) {
		for (QueryParam param : paramSet.getQueryParams()) {
			String key = param.getKey();
			Object val = param.getValue();
			val = convertVal(val);
			paramsMap.put(key, val);
		}
	}
	
	private static Object convertVal(Object val) {
		if (!(val instanceof Number) && !(val instanceof Boolean) && !(val instanceof List))
			return val.toString();
		return val;
	}
}