| /* |
| * 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.queries.intervals; |
| |
| import java.io.IOException; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Objects; |
| import org.apache.lucene.index.LeafReaderContext; |
| import org.apache.lucene.search.QueryVisitor; |
| |
| /** A source returning no matches */ |
| class NoMatchIntervalsSource extends IntervalsSource { |
| final String reason; |
| |
| NoMatchIntervalsSource(String reason) { |
| this.reason = reason; |
| } |
| |
| @Override |
| public IntervalIterator intervals(String field, LeafReaderContext ctx) throws IOException { |
| return null; |
| } |
| |
| @Override |
| public IntervalMatchesIterator matches(String field, LeafReaderContext ctx, int doc) |
| throws IOException { |
| return null; |
| } |
| |
| @Override |
| public void visit(String field, QueryVisitor visitor) {} |
| |
| @Override |
| public int minExtent() { |
| return 0; |
| } |
| |
| @Override |
| public Collection<IntervalsSource> pullUpDisjunctions() { |
| return Collections.singleton(this); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (o == null || getClass() != o.getClass()) return false; |
| NoMatchIntervalsSource that = (NoMatchIntervalsSource) o; |
| return Objects.equals(reason, that.reason); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(reason); |
| } |
| |
| @Override |
| public String toString() { |
| return "NOMATCH(" + reason + ")"; |
| } |
| } |