| /* |
| * 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.ignite.internal.processors.query.schema; |
| |
| import org.apache.ignite.internal.util.typedef.internal.S; |
| |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| /** |
| * Index operation cancellation token. |
| */ |
| public class SchemaIndexOperationCancellationToken { |
| /** Cancel flag. */ |
| private final AtomicBoolean flag = new AtomicBoolean(); |
| |
| /** |
| * Get cancel state. |
| * |
| * @return {@code True} if cancelled. |
| */ |
| public boolean isCancelled() { |
| return flag.get(); |
| } |
| |
| /** |
| * Do cancel. |
| * |
| * @return {@code True} if cancel flag was set by this call. |
| */ |
| public boolean cancel() { |
| return flag.compareAndSet(false, true); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public String toString() { |
| return S.toString(SchemaIndexOperationCancellationToken.class, this); |
| } |
| } |