字段和方法的javax.annotation的FindBugs DefaultAnnotation的替代方法 [英] alternative to FindBugs DefaultAnnotation for javax.annotation for fields and methods

问题描述

我目前正在使用

@DefaultAnnotation(NonNull.class)
package jobs;

import edu.umd.cs.findbugs.annotations.DefaultAnnotation;
import edu.umd.cs.findbugs.annotations.NonNull;

但是不建议使用@ edu.umd.cs.findbugs.annotations.DefaultAnnotation注释: http://findbugs.sourceforge.net/api/edu /umd/cs/findbugs/annotations/DefaultAnnotation.html

however the annotation @edu.umd.cs.findbugs.annotations.DefaultAnnotation is deprecated: http://findbugs.sourceforge.net/api/edu/umd/cs/findbugs/annotations/DefaultAnnotation.html

他们建议使用javax.annotation.ParametersAreNonnullByDefault 但是，DefaultAnnotation不仅针对参数，而且还针对字段和方法.

They propose to use javax.annotation.ParametersAreNonnullByDefault However, DefaultAnnotation not only targets parameters, but also fields and methods.

那么，默认情况下将字段和方法设置为Nonnull的javax.annotation替代方法是什么?

So, what is the javax.annotation alternative for setting fields and methods to Nonnull by default?

推荐答案

据我所知没有.想要同一件事，我复制了ParametersAreNonnullByDefault 的> source转换为我自己的FieldsAreNonnullByDefault和MethodsAreNonnullByDefault，并更改了@TypeQualifierDefault值以匹配(分别为FIELD和METHOD). FindBugs完美地拾取了这些新注释.

As far as I know there is none. Wanting the same thing, I copied the source for ParametersAreNonnullByDefault into my own FieldsAreNonnullByDefault and MethodsAreNonnullByDefault and changed the @TypeQualifierDefault values to match (FIELD and METHOD respective). FindBugs picks up these new annotations perfectly.

这是FieldsAreNonnullByDefault的示例:

package com.sample;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;

import javax.annotation.meta.TypeQualifierDefault;

/**
 * This annotation can be applied to a package or class to indicate that the 
 * classes' fields in that element are nonnull by default unless there is
 * <ul>
 *   <li>an explicit nullness annotation
 *   <li>a default field annotation applied to a more tightly nested element.
 * </ul>
 */
@Documented
@Nonnull
@TypeQualifierDefault(ElementType.FIELD)  // <-- METHOD for return values
@Retention(RetentionPolicy.RUNTIME)
public @interface FieldsAreNonnullByDefault {
}

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