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AsyncUtil下增加getOpt方法，用于执行失败时提供默认值，也能自定获取异常;拓展了Opt.ofEmptyAble方法，使其可以判断Collection下的其他集合

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This commit is contained in:
VampireAchao 2022-01-22 12:08:36 +08:00 committed by achao
parent efeddc1469
commit 158290c388
3 changed files with 28 additions and 5 deletions
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11
hutool-core/src/main/java/cn/hutool/core/lang/Opt.java
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@ -24,12 +24,12 @@
*/
package cn.hutool.core.lang;
import cn.hutool.core.collection.CollectionUtil;
import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.lang.func.Func0;
import cn.hutool.core.lang.func.VoidFunc0;
import cn.hutool.core.util.StrUtil;
import java.util.List;
import java.util.Collection;
import java.util.NoSuchElementException;
import java.util.Objects;
import java.util.Optional;
@ -101,18 +101,19 @@ public class Opt<T> {
}
/**
* 返回一个包裹里{@code List}集合可能为空的{@code Opt}，额外判断了集合内元素为空的情况
* 返回一个包裹里{@code Collection}集合可能为空的{@code Opt}，额外判断了集合内元素为空的情况
*
* @param value 传入需要包裹的元素
* @param <T> 包裹里元素的类型
* @return 一个包裹里元素可能为空的 {@code Opt}
* @since 5.7.17
*/
public static <T> Opt<List<T>> ofEmptyAble(List<T> value) {
return CollectionUtil.isEmpty(value) ? empty() : new Opt<>(value);
public static <T, R extends Collection<T>> Opt<R> ofEmptyAble(R value) {
return CollUtil.isEmpty(value) ? empty() : new Opt<>(value);
}
/**
* 传入一段操作，包裹异常
*
* @param supplier 操作
* @param <T> 类型

13
hutool-core/src/main/java/cn/hutool/core/thread/AsyncUtil.java
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@ -1,5 +1,7 @@
package cn.hutool.core.thread;
import cn.hutool.core.lang.Opt;
import java.lang.reflect.UndeclaredThrowableException;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
@ -60,4 +62,15 @@ public class AsyncUtil {
}
}
/**
* 获取异步任务结果，包裹了异常，并返回 {@link Opt}
*
* @param <T> 任务返回值类型
* @param task 异步任务
* @return 任务返回值
*/
public static <T> Opt<T> getOpt(CompletableFuture<T> task) {
return Opt.ofTry(task::get);
}
}

9
hutool-core/src/test/java/cn/hutool/core/thread/AsyncUtilTest.java
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@ -1,5 +1,7 @@
package cn.hutool.core.thread;
import cn.hutool.core.exceptions.ExceptionUtil;
import cn.hutool.core.lang.Opt;
import org.junit.Assert;
import org.junit.Ignore;
import org.junit.Test;
@ -34,5 +36,12 @@ public class AsyncUtilTest {
AsyncUtil.waitAll(hutool, sweater, warm);
// 获取结果
Assert.assertEquals("hutool卫衣真暖和", AsyncUtil.get(hutool) + AsyncUtil.get(sweater) + AsyncUtil.get(warm));
Opt<String> opt = AsyncUtil.getOpt(CompletableFuture.supplyAsync(() -> {
ExceptionUtil.wrapRuntimeAndThrow("Ops!");
return "whatever";
}));
Assert.assertTrue(opt.isFail());
Assert.assertEquals("java.lang.RuntimeException: Ops!", opt.getException().getMessage());
}
}