| /* |
| * 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.lucene.benchmark.byTask.feeds; |
| |
| import org.apache.lucene.benchmark.byTask.utils.Config; |
| import org.apache.lucene.search.Query; |
| |
| /** |
| * Abstract base query maker. Each query maker should just implement the {@link #prepareQueries()} |
| * method. |
| */ |
| public abstract class AbstractQueryMaker implements QueryMaker { |
| |
| protected int qnum = 0; |
| protected Query[] queries; |
| protected Config config; |
| |
| @Override |
| public void resetInputs() throws Exception { |
| qnum = 0; |
| // re-initialize since properties by round may have changed. |
| setConfig(config); |
| } |
| |
| protected abstract Query[] prepareQueries() throws Exception; |
| |
| @Override |
| public void setConfig(Config config) throws Exception { |
| this.config = config; |
| queries = prepareQueries(); |
| } |
| |
| @Override |
| public String printQueries() { |
| String newline = System.getProperty("line.separator"); |
| StringBuilder sb = new StringBuilder(); |
| if (queries != null) { |
| for (int i = 0; i < queries.length; i++) { |
| sb.append(i) |
| .append(". ") |
| .append(queries[i].getClass().getSimpleName()) |
| .append(" - ") |
| .append(queries[i].toString()); |
| sb.append(newline); |
| } |
| } |
| return sb.toString(); |
| } |
| |
| @Override |
| public Query makeQuery() throws Exception { |
| return queries[nextQnum()]; |
| } |
| |
| // return next qnum |
| protected synchronized int nextQnum() { |
| int res = qnum; |
| qnum = (qnum + 1) % queries.length; |
| return res; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * @see org.apache.lucene.benchmark.byTask.feeds.QueryMaker#makeQuery(int) |
| */ |
| @Override |
| public Query makeQuery(int size) throws Exception { |
| throw new Exception(this + ".makeQuery(int size) is not supported!"); |
| } |
| } |