1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package org.apache.commons.io.function; 19 20 import java.io.IOException; 21 import java.io.UncheckedIOException; 22 import java.util.function.LongSupplier; 23 import java.util.function.Supplier; 24 25 /** 26 * Like {@link LongSupplier} but throws {@link IOException}. 27 * 28 * @since 2.14.0 29 */ 30 @FunctionalInterface 31 public interface IOLongSupplier { 32 33 /** 34 * Creates a {@link Supplier} for this instance that throws {@link UncheckedIOException} instead of {@link IOException}. 35 * 36 * @return an UncheckedIOException Supplier. 37 */ 38 default LongSupplier asSupplier() { 39 return () -> Uncheck.getAsLong(this); 40 } 41 42 /** 43 * Gets a result. 44 * 45 * @return a result 46 * @throws IOException if an I/O error occurs. 47 */ 48 long getAsLong() throws IOException; 49 }