org.apache.commons.lang3.function.FailableLongFunction Maven / Gradle / Ivy
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/*
* 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.commons.lang3.function;
import java.util.function.LongFunction;
/**
* A functional interface like {@link LongFunction} that declares a {@link Throwable}.
*
* @param Return type.
* @param The kind of thrown exception or error.
* @since 3.11
*/
@FunctionalInterface
public interface FailableLongFunction {
/** NOP singleton */
@SuppressWarnings("rawtypes")
FailableLongFunction NOP = t -> null;
/**
* Returns The NOP singleton.
*
* @param Return type.
* @param The kind of thrown exception or error.
* @return The NOP singleton.
*/
@SuppressWarnings("unchecked")
static FailableLongFunction nop() {
return NOP;
}
/**
* Applies this function.
*
* @param input the input for the function
* @return the result of the function
* @throws E Thrown when the function fails.
*/
R apply(long input) throws E;
}