org.springframework.data.redis.connection.DataType.java Source code

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Here is the source code for org.springframework.data.redis.connection.DataType.java

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/*
 * Copyright 2011-2019 the original author or authors.
 *
 * 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
 *
 *      https://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.springframework.data.redis.connection;

import java.util.EnumSet;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

/**
 * Enumeration of the Redis data types.
 *
 * @author Costin Leau
 * @author Mark Paluch
 */
public enum DataType {

    NONE("none"), STRING("string"), LIST("list"), SET("set"), ZSET("zset"), HASH("hash"),
    /**
     * @since 2.2
     */
    STREAM("stream");

    private static final Map<String, DataType> codeLookup = new ConcurrentHashMap<>(7);

    static {
        for (DataType type : EnumSet.allOf(DataType.class))
            codeLookup.put(type.code, type);

    }

    private final String code;

    DataType(String name) {
        this.code = name;
    }

    /**
     * Returns the code associated with the current enum.
     *
     * @return code of this enum
     */
    public String code() {
        return code;
    }

    /**
     * Utility method for converting an enum code to an actual enum.
     *
     * @param code enum code
     * @return actual enum corresponding to the given code
     */
    public static DataType fromCode(String code) {
        DataType data = codeLookup.get(code);
        if (data == null)
            throw new IllegalArgumentException("unknown data type code");
        return data;
    }
}