/*
* 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.tinkerpop.gremlin.process.traversal.step.util;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/**
* @author Marko A. Rodriguez (http://markorodriguez.com)
*/
public final class MapHelper {
private MapHelper() {
}
public static <T> void incr(final Map<T, Long> map, final T key, final Long value) {
map.put(key, value + map.getOrDefault(key, 0l));
}
public static <T> void incr(final Map<T, Double> map, final T key, final Double value) {
map.put(key, value + map.getOrDefault(key, 0.0d));
}
public static <T, U> void incr(final Map<T, List<U>> map, final T key, final U value) {
map.compute(key, (k, v) -> {
if (null == v) v = new ArrayList<>();
v.add(value);
return v;
});
}
}