org.apache.hudi.common.util.TypeUtils Maven / Gradle / Ivy
/*
* 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.hudi.common.util;
import javax.annotation.Nonnull;
import java.util.Arrays;
import java.util.Map;
import java.util.function.Function;
import java.util.stream.Collectors;
/**
* Utils for Java type cast.
*/
public final class TypeUtils {
private TypeUtils() {}
/**
* Maps values from the provided Enum's {@link Class} into corresponding values,
* extracted by provided {@code valueMapper}
*/
public static > Map getValueToEnumMap(
@Nonnull Class klass,
@Nonnull Function valueMapper
) {
return Arrays.stream(klass.getEnumConstants())
.collect(Collectors.toMap(valueMapper, Function.identity()));
}
/**
* This utility abstracts unsafe type-casting in a way that allows to
*
* - Search for such type-casts more easily (just searching for usages of this method)
* - Avoid type-cast warnings from the compiler
*
*/
@SuppressWarnings("unchecked")
public static T unsafeCast(Object o) {
return (T) o;
}
}