com.livk.commons.util.EnumerationSpliterator Maven / Gradle / Ivy
/*
* Copyright 2021-2024 spring-boot-extension the original author or authors.
*
* Licensed 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
*
* https://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 com.livk.commons.util;
import java.util.Enumeration;
import java.util.Objects;
import java.util.Spliterator;
import java.util.Spliterators;
import java.util.function.Consumer;
/**
*
* 用于Enumeration转换Stream
*
*
* @param the type parameter
* @author livk
* @see BaseStreamUtils#convert(Enumeration)
*/
final class EnumerationSpliterator extends Spliterators.AbstractSpliterator {
private final Enumeration enumeration;
private EnumerationSpliterator(Enumeration enumeration, int additionalCharacteristics) {
super(Long.MAX_VALUE, additionalCharacteristics);
this.enumeration = enumeration;
}
/**
* 根据Enumeration构造Spliterator
* @param type parameter
* @param enumeration enumeration
* @return spliterator
*/
public static Spliterator spliteratorUnknownSize(Enumeration enumeration) {
return new EnumerationSpliterator<>(Objects.requireNonNull(enumeration), Spliterator.ORDERED);
}
@Override
public boolean tryAdvance(Consumer action) {
if (enumeration.hasMoreElements()) {
action.accept(enumeration.nextElement());
return true;
}
return false;
}
@Override
public void forEachRemaining(Consumer action) {
while (enumeration.hasMoreElements()) {
action.accept(enumeration.nextElement());
}
}
}