| /* $Id$ |
| * |
| * 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.etch.bindings.java.support; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.etch.bindings.java.msg.Type; |
| |
| |
| /** |
| * Mapping between Class and Type. |
| */ |
| public class Class2TypeMap |
| { |
| /** |
| * @param c |
| * @return the Type for the specified class, or null. |
| */ |
| public Type get( Class<?> c ) |
| { |
| return c2t.get( c ); |
| } |
| |
| /** |
| * Adds a map entry from c to t. |
| * @param c |
| * @param t |
| * @throws IllegalStateException if locked. |
| * @throws IllegalArgumentException if conflict. |
| */ |
| public void put( Class<?> c, Type t ) |
| { |
| if (locked) |
| throw new IllegalStateException( "locked" ); |
| |
| Type x = c2t.get( c ); |
| if (x != null) |
| { |
| if (!x.equals( t )) |
| throw new IllegalArgumentException( String.format( |
| "type %s: class %s is already mapped to type %s", |
| t, c, x ) ); |
| |
| // x.equals( t ) therefore our work is finished. |
| return; |
| } |
| |
| c2t.put( c, t ); |
| } |
| |
| /** |
| * Adds all the mappings from other to this. |
| * @param other |
| * @throws IllegalStateException if locked. |
| * @throws IllegalArgumentException if conflict. |
| */ |
| public void addAll( Class2TypeMap other ) |
| { |
| if (locked) |
| throw new IllegalStateException( "locked" ); |
| |
| for (Map.Entry<Class<?>, Type> me: other.c2t.entrySet()) |
| put( me.getKey(), me.getValue() ); |
| } |
| |
| /** |
| * Locks the map, disallowing any more changes. |
| */ |
| public void lock() |
| { |
| locked = true; |
| } |
| |
| private final Map<Class<?>, Type> c2t = new HashMap<Class<?>, Type>(); |
| |
| private boolean locked; |
| } |