Java tutorial
/* * 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 io.prestosql.metadata; import com.google.common.collect.ImmutableSet; import io.prestosql.spi.Node; import java.util.Objects; import java.util.Set; import static java.util.Objects.requireNonNull; public class AllNodes { private final Set<Node> activeNodes; private final Set<Node> inactiveNodes; private final Set<Node> shuttingDownNodes; private final Set<Node> activeCoordinators; public AllNodes(Set<Node> activeNodes, Set<Node> inactiveNodes, Set<Node> shuttingDownNodes, Set<Node> activeCoordinators) { this.activeNodes = ImmutableSet.copyOf(requireNonNull(activeNodes, "activeNodes is null")); this.inactiveNodes = ImmutableSet.copyOf(requireNonNull(inactiveNodes, "inactiveNodes is null")); this.shuttingDownNodes = ImmutableSet .copyOf(requireNonNull(shuttingDownNodes, "shuttingDownNodes is null")); this.activeCoordinators = ImmutableSet .copyOf(requireNonNull(activeCoordinators, "activeCoordinators is null")); } public Set<Node> getActiveNodes() { return activeNodes; } public Set<Node> getInactiveNodes() { return inactiveNodes; } public Set<Node> getShuttingDownNodes() { return shuttingDownNodes; } public Set<Node> getActiveCoordinators() { return activeCoordinators; } @Override public boolean equals(Object o) { if (this == o) { return true; } if (o == null || getClass() != o.getClass()) { return false; } AllNodes allNodes = (AllNodes) o; return Objects.equals(activeNodes, allNodes.activeNodes) && Objects.equals(inactiveNodes, allNodes.inactiveNodes) && Objects.equals(shuttingDownNodes, allNodes.shuttingDownNodes) && Objects.equals(activeCoordinators, allNodes.activeCoordinators); } @Override public int hashCode() { return Objects.hash(activeNodes, inactiveNodes, shuttingDownNodes, activeCoordinators); } }