| <!-- |
| 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. |
| --> |
| <!-- |
| A Multi-valued, generic Metadata container schema. The class uses a map of |
| string keys pointing to vectors of strings. The data structure looks like |
| the following: |
| |
| [std:string key]=><std:vector of std:strings> |
| |
| The multi-valued nature of the class is handled transparently by this Metadata |
| container. Since all values are stored internally as string vectors, the difference |
| between a scalar value and a non-scalar is handled by determing whether the list of |
| values for a particular key is greater than 1. |
| --> |
| |
| <!ELEMENT metadata (keyval)*> |
| |
| <!ELEMENT keyval (key, val+)> |
| |
| <!ELEMENT key (#PCDATA)> |
| |
| <!ELEMENT val (#PCDATA)> |