| /* |
| * Copyright 2014 Google Inc. |
| * |
| * 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.gwt.dev.util; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.ObjectInputStream; |
| |
| /** |
| * An ObjectInputStream that interns all deserialized strings. |
| */ |
| public class StringInterningObjectInputStream extends ObjectInputStream { |
| |
| public static final int MAX_INTERNED_STRING_SIZE = 2048; |
| |
| public StringInterningObjectInputStream(InputStream inputStream) throws IOException { |
| super(inputStream); |
| enableResolveObject(true); |
| } |
| |
| @Override |
| protected Object resolveObject(Object obj) throws IOException { |
| Object resolvedObject = super.resolveObject(obj); |
| if (resolvedObject instanceof String && |
| ((String) resolvedObject).length() < MAX_INTERNED_STRING_SIZE) { |
| return StringInterner.get().intern((String) resolvedObject); |
| } |
| return resolvedObject; |
| } |
| } |