| /* |
| * 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.nifi.provenance; |
| |
| import java.util.Date; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.nifi.provenance.search.Query; |
| import org.apache.nifi.provenance.search.QuerySubmission; |
| |
| /** |
| * |
| */ |
| public class AsyncQuerySubmission implements QuerySubmission { |
| |
| public static final int TTL = (int) TimeUnit.MILLISECONDS.convert(60, TimeUnit.SECONDS); |
| |
| private final Date submissionTime = new Date(); |
| private final Query query; |
| |
| private volatile boolean canceled = false; |
| private final StandardQueryResult queryResult; |
| |
| /** |
| * Constructs an AsyncQuerySubmission with the given query and the given |
| * number of steps, indicating how many results must be added to this |
| * AsyncQuerySubmission before it is considered finished |
| * |
| * @param query |
| * @param numSteps |
| */ |
| public AsyncQuerySubmission(final Query query, final int numSteps) { |
| this.query = query; |
| queryResult = new StandardQueryResult(query, numSteps); |
| } |
| |
| @Override |
| public Date getSubmissionTime() { |
| return submissionTime; |
| } |
| |
| @Override |
| public String getQueryIdentifier() { |
| return query.getIdentifier(); |
| } |
| |
| @Override |
| public void cancel() { |
| this.canceled = true; |
| queryResult.cancel(); |
| } |
| |
| @Override |
| public boolean isCanceled() { |
| return canceled; |
| } |
| |
| @Override |
| public Query getQuery() { |
| return query; |
| } |
| |
| @Override |
| public StandardQueryResult getResult() { |
| return queryResult; |
| } |
| } |