1 /*
2 * Copyright 2012-2025 CodeLibs Project and the Others.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
13 * either express or implied. See the License for the specific language
14 * governing permissions and limitations under the License.
15 */
16 package org.codelibs.fess.util;
17
18 /**
19 * Functional interface for boolean functions.
20 * Represents a function that accepts one argument and produces a boolean result.
21 * @param <T> the type of the input to the function
22 */
23 @FunctionalInterface
24 public interface BooleanFunction<T> {
25 /**
26 * Applies this function to the given argument.
27 * @param t the function argument
28 * @return the function result
29 */
30 boolean apply(T t);
31 }