将 Lombok NonNull 注释添加到 JDO 实体字段后编译失败

Question

基于 Apache Isis 2 SimpleApp JDO 项目 (https://github.com/ apache/isis-app-simpleapp/tree/jdo）我尝试稍微修改 SimpleObject 类来标记一些字段（name 和 notes< /代码>) 作为使用 Lombok 注释 @NonNull 不能为空。这意外地导致编译失败

Error:  Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project simpleapp-jdo-module-simple: Compilation failure: Compilation failure: 
Error:  /home/runner/work/isis-app-simpleapp/isis-app-simpleapp/module-simple/target/generated-sources/annotations/domainapp/modules/simple/dom/so/QSimpleObject.java:[35,51] cannot find symbol
Error:    symbol:   class java
Error:    location: class domainapp.modules.simple.dom.so.QSimpleObject
Error:  /home/runner/work/isis-app-simpleapp/isis-app-simpleapp/module-simple/target/generated-sources/annotations/domainapp/modules/simple/dom/so/QSimpleObject.java:[36,51] cannot find symbol
Error:    symbol:   class java
Error:    location: class domainapp.modules.simple.dom.so.QSimpleObject
Error:  -> [Help 1]

相关 GitHub 操作： https://github .com/a-st/isis-app-simpleapp/runs/5330590432

DataNucleus 生成的类isis-app-simpleapp/module-simple/target/ generated-sources/annotations/domainapp/modules/simple/dom/so/QSimpleObject.java 看起来像这样

package domainapp.modules.simple.dom.so;

import javax.annotation.Generated;
import javax.jdo.query.*;
import org.datanucleus.api.jdo.query.*;

@Generated(value="org.datanucleus.jdo.query.JDOQueryProcessor")
public class QSimpleObject extends PersistableExpressionImpl<SimpleObject> implements PersistableExpression<SimpleObject>
{
    public static final QSimpleObject jdoCandidate = candidate("this");

    public static QSimpleObject candidate(String name)
    {
        return new QSimpleObject(null, name, 5);
    }

    public static QSimpleObject candidate()
    {
        return jdoCandidate;
    }

    public static QSimpleObject parameter(String name)
    {
        return new QSimpleObject(SimpleObject.class, name, ExpressionType.PARAMETER);
    }

    public static QSimpleObject variable(String name)
    {
        return new QSimpleObject(SimpleObject.class, name, ExpressionType.VARIABLE);
    }

    public final ObjectExpression<org.apache.isis.applib.services.repository.RepositoryService> repositoryService;
    public final ObjectExpression<org.apache.isis.applib.services.title.TitleService> titleService;
    public final ObjectExpression<org.apache.isis.applib.services.message.MessageService> messageService;
    public final ObjectExpression<@lombok.NonNull java.lang.String> name;
    public final ObjectExpression<@lombok.NonNull java.lang.String> notes;

    public QSimpleObject(PersistableExpression parent, String name, int depth)
    {
        super(parent, name);
        this.repositoryService = new ObjectExpressionImpl<org.apache.isis.applib.services.repository.RepositoryService>(this, "repositoryService");
        this.titleService = new ObjectExpressionImpl<org.apache.isis.applib.services.title.TitleService>(this, "titleService");
        this.messageService = new ObjectExpressionImpl<org.apache.isis.applib.services.message.MessageService>(this, "messageService");
        this.name = new StringExpressionImpl(this, "name");
        this.notes = new StringExpressionImpl(this, "notes");
    }

    public QSimpleObject(Class type, String name, ExpressionType exprType)
    {
        super(type, name, exprType);
        this.repositoryService = new ObjectExpressionImpl<org.apache.isis.applib.services.repository.RepositoryService>(this, "repositoryService");
        this.titleService = new ObjectExpressionImpl<org.apache.isis.applib.services.title.TitleService>(this, "titleService");
        this.messageService = new ObjectExpressionImpl<org.apache.isis.applib.services.message.MessageService>(this, "messageService");
        this.name = new StringExpressionImpl(this, "name");
        this.notes = new StringExpressionImpl(this, "notes");
    }
}

根据 Visual Studio Code，以下几行是导致问题（非法放置注释：类型注释必须直接位于它们要影响的类型的简单名称之前（或 []数组)Java(1610613796))

    public final ObjectExpression<@lombok.NonNull java.lang.String> name;
    public final ObjectExpression<@lombok.NonNull java.lang.String> notes;

源代码位于 https://github.com/a-st/isis-应用程序-simpleapp/tree/jdo-lombok-nonnull

Answer 1

问题似乎与 https://github.com/datanucleus/datanucleus- 有关jdo-query/issues/18 并通过指定解决

        <dependency>
            <groupId>org.datanucleus</groupId>
            <artifactId>datanucleus-jdo-query</artifactId>
            <version>6.0.0-m1</version>
        </dependency>