| package org.apache.jcs.yajcache.util; |
| |
| /* |
| * 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. |
| */ |
| |
| import java.math.BigDecimal; |
| import java.math.BigInteger; |
| |
| import org.apache.jcs.yajcache.lang.annotation.*; |
| /** |
| * |
| * @author Hanson Char |
| */ |
| // @CopyRightApache |
| // http://www.netbeans.org/issues/show_bug.cgi?id=53704 |
| public enum ClassUtils { |
| inst; |
| /** |
| * Returns true if instances of the given class is known to be immutable; |
| * false if we don't know. |
| */ |
| public boolean isImmutable(@NonNullable Class t) { |
| return t == String.class |
| || t.isPrimitive() |
| || t == Boolean.class |
| || t == Byte.class |
| || t == Character.class |
| || t == Short.class |
| || t == Integer.class |
| || t == Long.class |
| || t == Float.class |
| || t == Double.class |
| || t == BigInteger.class |
| || t == BigDecimal.class |
| || t.isEnum() |
| ; |
| } |
| public boolean isImmutable(@NonNullable Object obj) { |
| return this.isImmutable(obj.getClass()); |
| } |
| } |