spark EnumUtil 源码
spark EnumUtil 代码
文件路径：/core/src/main/java/org/apache/spark/util/EnumUtil.java
/*
* 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.spark.util;
import com.google.common.base.Joiner;
import org.apache.spark.annotation.Private;
@Private
public class EnumUtil {
public static <E extends Enum<E>> E parseIgnoreCase(Class<E> clz, String str) {
E[] constants = clz.getEnumConstants();
if (str == null) {
return null;
}
for (E e : constants) {
if (e.name().equalsIgnoreCase(str)) {
return e;
}
}
throw new IllegalArgumentException(
String.format("Illegal type='%s'. Supported type values: %s",
str, Joiner.on(", ").join(constants)));
}
}
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