com.hazelcast.config.CacheDeserializedValues Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2016, Hazelcast, Inc. All Rights Reserved.
*
* 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.hazelcast.config;
import com.hazelcast.util.StringUtil;
import java.util.Arrays;
/**
*
* Control caching of de-serialized values. Caching makes query evaluation faster but it cost memory.
*
* To maintain reusability cached values are used by read-only operations only and they are never
* passed to user-code where they could be accidentally mutated. Users will always get a fresh object,
* which they are free to mutate.
*
* It does not have any effect when {@link com.hazelcast.nio.serialization.Portable} serialization or
* {@link InMemoryFormat#OBJECT} format is used.
*
* @since 3.6
*/
public enum CacheDeserializedValues {
/**
* Never cache de-serialized value
*
*/
NEVER,
/**
* Cache values only when using search indexes.
*
*/
INDEX_ONLY,
/**
* Always cache de-serialized values
*
*/
ALWAYS;
/**
* Create instance from String
*
* @param string
* @return instance of {@link CacheDeserializedValues}
* @throws IllegalArgumentException when unknown value is passed
*/
public static CacheDeserializedValues parseString(String string) {
String upperCase = StringUtil.upperCaseInternal(string);
if ("NEVER".equals(upperCase)) {
return NEVER;
} else if ("INDEX_ONLY".equals(upperCase) || "INDEX-ONLY".equals(upperCase)) {
return INDEX_ONLY;
} else if ("ALWAYS".equals(upperCase)) {
return ALWAYS;
} else {
throw new IllegalArgumentException("Unknown CacheDeserializedValues option '" + string + ". "
+ "Possible options: " + Arrays.toString(CacheDeserializedValues.values()) + " .");
}
}
}