1 package org.apache.lucene.facet.index.attributes;
4 * Licensed to the Apache Software Foundation (ASF) under one or more
5 * contributor license agreements. See the NOTICE file distributed with
6 * this work for additional information regarding copyright ownership.
7 * The ASF licenses this file to You under the Apache License, Version 2.0
8 * (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
21 * A {@link CategoryProperty} holding the ordinal from the taxonomy of the
22 * current category in {@link CategoryAttribute}.
24 * Ordinal properties are added internally during processing of category
25 * streams, and it is recommended not to use it externally.
27 * @lucene.experimental
29 public class OrdinalProperty implements CategoryProperty {
31 protected int ordinal = -1;
33 public int getOrdinal() {
37 public boolean hasBeenSet() {
38 return this.ordinal >= 0;
41 public void setOrdinal(int value) {
50 public boolean equals(Object other) {
54 if (!(other instanceof OrdinalProperty)) {
57 OrdinalProperty o = (OrdinalProperty) other;
58 return o.ordinal == this.ordinal;
62 public int hashCode() {
66 public void merge(CategoryProperty other) {
67 throw new UnsupportedOperationException(
68 "Merging ordinal attributes is prohibited");