| /* |
| * 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.geode.internal.cache; |
| |
| import org.apache.geode.util.internal.GeodeGlossary; |
| |
| /** |
| * No instances of this class. Just some static method having to do with inline keys. |
| * |
| */ |
| public class InlineKeyHelper { |
| public static final boolean INLINE_REGION_KEYS = |
| !Boolean.getBoolean(GeodeGlossary.GEMFIRE_PREFIX + "DISABLE_INLINE_REGION_KEYS"); |
| |
| /** |
| * The maximum number of longs any of region entry subclasses use to store the string key inline. |
| */ |
| public static final int MAX_LONGS_USED_FOR_STRING_KEY = 2; |
| |
| /** |
| * Given the number of longs used to encode the inline string return the maximum number of |
| * characters that can be encoded into that many longs. |
| */ |
| public static int getMaxInlineStringKey(int longCount, boolean byteEncoded) { |
| return (longCount * (byteEncoded ? 8 : 4)) - 1; |
| } |
| |
| /** |
| * Return null if the given string can not be encoded inline. Return true if the given string can |
| * be encoded inline as bytes. Return false if the given string can be encoded inline as chars. |
| */ |
| public static Boolean canStringBeInlineEncoded(String skey) { |
| if (skey.length() > getMaxInlineStringKey(MAX_LONGS_USED_FOR_STRING_KEY, true)) { |
| return null; |
| } |
| if (isByteEncodingOk(skey)) { |
| return Boolean.TRUE; |
| } else { |
| if (skey.length() > getMaxInlineStringKey(MAX_LONGS_USED_FOR_STRING_KEY, false)) { |
| return null; |
| } else { |
| return Boolean.FALSE; |
| } |
| } |
| } |
| |
| private static boolean isByteEncodingOk(String skey) { |
| for (int i = 0; i < skey.length(); i++) { |
| if (skey.charAt(i) > 0x7f) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| } |