org.apache.hadoop.hive.ql.metadata.formatting.MapBuilder Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.hadoop.hive.ql.metadata.formatting;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;
/**
* Helper class to build Maps consumed by the JSON formatter. Only
* add non-null entries to the Map.
*/
public class MapBuilder {
private Map map = new LinkedHashMap();
private MapBuilder() {}
public static MapBuilder create() {
return new MapBuilder();
}
public MapBuilder put(String name, Object val) {
if (val != null)
map.put(name, val);
return this;
}
public MapBuilder put(String name, boolean val) {
map.put(name, Boolean.valueOf(val));
return this;
}
public MapBuilder put(String name, int val) {
map.put(name, Integer.valueOf(val));
return this;
}
public MapBuilder put(String name, long val) {
map.put(name, Long.valueOf(val));
return this;
}
public MapBuilder put(String name, T val, boolean use) {
if (use)
put(name, val);
return this;
}
public Map build() {
return map;
}
}