| /* |
| * |
| * 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.qpid.server.message; |
| |
| import java.util.EnumMap; |
| import java.util.Map; |
| |
| public interface InstanceProperties |
| { |
| |
| enum Property { |
| REDELIVERED, |
| PERSISTENT, |
| MANDATORY, |
| IMMEDIATE, |
| EXPIRATION |
| } |
| |
| public Object getProperty(Property prop); |
| |
| InstanceProperties EMPTY = new InstanceProperties() |
| { |
| @Override |
| public Object getProperty(final Property prop) |
| { |
| return null; |
| } |
| }; |
| |
| class Factory |
| { |
| public static InstanceProperties fromMap(Map<Property, Object> map) |
| { |
| final Map<Property,Object> props = new EnumMap<Property,Object>(map); |
| return new MapInstanceProperties(props); |
| } |
| |
| public static Map<Property, Object> asMap(InstanceProperties props) |
| { |
| EnumMap<Property, Object> map = new EnumMap<Property,Object>(Property.class); |
| |
| for(Property prop : Property.values()) |
| { |
| Object value = props.getProperty(prop); |
| if(value != null) |
| { |
| map.put(prop,value); |
| } |
| } |
| |
| return map; |
| } |
| |
| public static InstanceProperties copy(InstanceProperties from) |
| { |
| final Map<Property,Object> props = asMap(from); |
| |
| return new MapInstanceProperties(props); |
| |
| } |
| |
| private static class MapInstanceProperties implements InstanceProperties |
| { |
| private final Map<Property, Object> _props; |
| |
| private MapInstanceProperties(final Map<Property, Object> props) |
| { |
| _props = props; |
| } |
| |
| @Override |
| public Object getProperty(final Property prop) |
| { |
| return _props.get(prop); |
| } |
| } |
| |
| |
| } |
| } |