com.amazonaws.athena.connector.lambda.CollectionsUtils Maven / Gradle / Ivy
package com.amazonaws.athena.connector.lambda;
/*-
* #%L
* Amazon Athena Query Federation SDK
* %%
* Copyright (C) 2019 Amazon Web Services
* %%
* 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.
* #L%
*/
import java.util.Collection;
/**
* Simple collection helper that reduces duplicate code and allows us to avoid taking extra dependencies
* on libraries that have some of these helpers built in but would bloat the deployment artifact of our
* Lambda functions.
*/
public class CollectionsUtils
{
private CollectionsUtils() {}
public static boolean equals(Collection lhs, Collection rhs)
{
if (lhs == null && rhs == null) {
return true;
}
if ((lhs == null && rhs != null) || (lhs != null && rhs == null)) {
return false;
}
if (lhs.size() != rhs.size()) {
return false;
}
return lhs.containsAll(rhs);
}
}