| /* |
| * 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.cassandra.simulator; |
| |
| import java.util.ArrayList; |
| |
| import com.google.common.base.Preconditions; |
| |
| import org.apache.cassandra.utils.Shared; |
| |
| import static org.apache.cassandra.utils.Shared.Scope.SIMULATION; |
| |
| /** |
| * A (possibly empty) collection of OrderOn |
| */ |
| @Shared(scope = SIMULATION) |
| public interface OrderOns |
| { |
| /** |
| * Equivalent to !isEmpty() |
| */ |
| boolean isOrdered(); |
| |
| /** |
| * Equivalent to anyMatch(OrderOn::isOrdered) |
| */ |
| boolean isStrict(); |
| |
| /** |
| * Return an {@code OrderOns} (possibly this one) also containing {@code add} |
| */ |
| OrderOns with(OrderOn add); |
| |
| /** |
| * The number of {@link OrderOn} contained in this collection |
| */ |
| int size(); |
| |
| /** |
| * The i'th {@link OrderOn} contained in this collection |
| */ |
| OrderOn get(int i); |
| |
| public static final OrderOn NONE = new OrderOn() |
| { |
| @Override |
| public OrderOns with(OrderOn add) |
| { |
| return add; |
| } |
| |
| @Override |
| public int size() |
| { |
| return 0; |
| } |
| |
| @Override |
| public OrderOn get(int i) |
| { |
| throw new IndexOutOfBoundsException(); |
| } |
| |
| @Override |
| public int concurrency() |
| { |
| return Integer.MAX_VALUE; |
| } |
| |
| @Override |
| public String toString() |
| { |
| return "Unordered"; |
| } |
| }; |
| |
| public class TwoOrderOns implements OrderOns |
| { |
| final OrderOn one; |
| final OrderOn two; |
| |
| public TwoOrderOns(OrderOn one, OrderOn two) |
| { |
| this.one = one; |
| this.two = two; |
| } |
| |
| @Override |
| public boolean isOrdered() |
| { |
| return true; |
| } |
| |
| @Override |
| public boolean isStrict() |
| { |
| return one.isStrict() || two.isStrict(); |
| } |
| |
| @Override |
| public OrderOns with(OrderOn three) |
| { |
| OrderOnsList result = new OrderOnsList(); |
| result.add(one); |
| result.add(two); |
| result.add(three); |
| return result; |
| } |
| |
| @Override |
| public int size() |
| { |
| return 2; |
| } |
| |
| @Override |
| public OrderOn get(int i) |
| { |
| Preconditions.checkArgument((i & 1) == i); |
| return i == 0 ? one : two; |
| } |
| } |
| |
| public class OrderOnsList extends ArrayList<OrderOn> implements OrderOns |
| { |
| @Override |
| public boolean isOrdered() |
| { |
| return true; |
| } |
| |
| @Override |
| public boolean isStrict() |
| { |
| for (int i = 0 ; i < size() ; ++i) |
| { |
| if (get(i).isStrict()) |
| return true; |
| } |
| return false; |
| } |
| |
| public OrderOns with(OrderOn add) |
| { |
| add(add); |
| return this; |
| } |
| } |
| } |