| // Copyright 2013 Google Inc. All Rights Reserved. |
| // |
| // Licensed 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 com.google.enterprise.adaptor; |
| |
| /** A forwarding session that namespaces its keys. */ |
| class NamespacedSession implements Session { |
| private final Session session; |
| private final String prefix; |
| |
| public NamespacedSession(Session session, String prefix) { |
| if (session == null || prefix == null) { |
| throw new NullPointerException(); |
| } |
| this.session = session; |
| this.prefix = prefix; |
| } |
| |
| @Override |
| public void setAttribute(String key, Object value) { |
| key = mapKey(key); |
| session.setAttribute(key, value); |
| } |
| |
| @Override |
| public Object getAttribute(String key) { |
| key = mapKey(key); |
| return session.getAttribute(key); |
| } |
| |
| @Override |
| public Object removeAttribute(String key) { |
| key = mapKey(key); |
| return session.removeAttribute(key); |
| } |
| |
| private String mapKey(String key) { |
| return prefix + key; |
| } |
| } |