| //// |
| 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 |
| //// |
| |
| // This module is included in the following assemblies: |
| // |
| // configuring-address-space-message-routing.adoc |
| |
| [id='address-pattern-matching-{context}'] |
| = Address pattern matching |
| |
| In some router configuration scenarios, you might need to use pattern matching to match a range of addresses rather than a single, literal address. Address patterns match any address that corresponds to the pattern. |
| |
| An address pattern is a sequence of tokens (typically words) that are delimited by either `.` or `/` characters. They also can contain special wildcard characters that represent words: |
| |
| * `*` represents exactly one word |
| * `#` represents zero or more words |
| |
| .Address pattern |
| ==== |
| This address contains two tokens, separated by the `/` delimiter: |
| |
| `my/address` |
| ==== |
| |
| .Address pattern with wildcard |
| ==== |
| This address contains three tokens. The `*` is a wildcard, representing any single word that might be between `my` and `address`: |
| |
| `my/*/address` |
| ==== |
| |
| The following table shows some address patterns and examples of the addresses that would match them: |
| |
| [options="header"] |
| |=== |
| | This pattern... | Matches... | But not... |
| |
| a| `news/*` |
| a| `news/europe` |
| |
| `news/usa` |
| a| `news` |
| |
| `news/usa/sports` |
| |
| a| `news/#` |
| a| `news` |
| |
| `news/europe` |
| |
| `news/usa/sports` |
| a| `europe` |
| |
| `usa` |
| |
| a| `news/europe/#` |
| a| `news/europe` |
| |
| `news/europe/sports` |
| |
| `news/europe/politics/fr` |
| a| `news/usa` |
| |
| `europe` |
| |
| a| `news/*/sports` |
| a| `news/europe/sports` |
| |
| `news/usa/sports` |
| a| `news` |
| |
| `news/europe/fr/sports` |
| |
| |=== |
