使用 jhipster 创建实体后如何删除它？答案

【问题标题】：How to delete an entity after creating it using jhipster?使用 jhipster 创建实体后如何删除它？
【发布时间】：2015-01-29 23:02:50
【问题描述】：

我使用“yo jhipster:entity”命令创建了 3 个实体（作者、图书、图书馆），但在一个实体（图书馆）中，我有一个多对多关系（与图书），但这导致“mappedBy 引用了一个未知的目标实体属性：com.tst.testdomain.docmain.Library.books 中的 com.tst.testdomain.domain.Book.librarys” 那么删除图书馆实体的干净方法是什么。像“yo jhipster:entitydelete”这样的命令有用吗？

【问题讨论】：

新功能可以直接在github内部申请。

标签： jhipster

【解决方案1】：

我为此使用 git scm。需要删除的不仅仅是生成的文件。 jHipster 还会修改文件，因此您需要保留文件但退出更改。

每次创建实体时，我都会进行单独的提交，以便跟踪 jHipster 为每个实体所做的工作。

清除自上次提交以来的所有更改

git reset --hard
git clean -fd

如果我已经这样做了，但我还需要退出之前的提交，那么我会这样做

git reset --hard HEAD~1

提交在 git 中是本地的，因此只有在您推送这些提交之前，它们才会被共享。

【讨论】：

哇，我想这是我的第一个反对票。我很想知道为什么！？据我所知，这个答案是正确的，并且 git 过程对我有用。请记住，这在 2 月得到了回答，从那时起 jHipster 发生了很大变化，也许他们添加了实际删除？无论哪种方式，使用 git 仍然是处理此问题的有效方法。
git clean -fd 的唯一问题是它删除了我的 IDE 元文件和任何未跟踪的文件，这给我带来了极大的不便，因此我停止使用它。（顺便说一句，我没有对你投反对票）
@DhafirNz 您需要创建一个名为 .gitignore 的文本文件，并在其中列出任何未跟踪的项目，例如 IDE 元文件。 git-scm.com/docs/gitignore

【解决方案2】：

我做了一个拉取请求来添加这个功能： https://github.com/jhipster/generator-jhipster/pull/4369

要使用它，很简单：

yo jhipster:entity Foo --remove

它删除了 liquibase 脚本，但在您需要处理已经创建但尚未删除的表/列族之后。

如果您对此感兴趣，请投票或评论问题： https://github.com/jhipster/generator-jhipster/issues/4372

【讨论】：

【解决方案3】：

您应该删除以下内容：

rm -rf   src/main/resources/config/liquibase/changelog/XXX_added_entity_YourEntity.xml
rm -rf src/main/java/com/radsphere/jeces/domain/YourEntity.java
rm -rf src/main/java/com/radsphere/jeces/repository/YourEntityRepository.java
rm -rf src/main/java/com/radsphere/jeces/web/rest/YourEntityResource.java 
rm -rf src/main/webapp/scripts/app/entities/YourEntity/YourEntitys.html
rm -rf src/main/webapp/scripts/app/entities/YourEntity/YourEntity-detail.html
rm -rf src/main/webapp/scripts/app/entities/YourEntity/YourEntity.js
rm -rf src/main/webapp/scripts/app/entities/YourEntity/YourEntity.controller.js
rm -rf src/main/webapp/scripts/app/entities/YourEntity/YourEntity-detail.controller.js
rm -rf  src/main/webapp/scripts/components/entities/YourEntity/YourEntity.service.js
rm -rf src/test/java/com/radsphere/jeces/web/rest/YourEntityResourceTest.java
rm -rf src/main/webapp/i18n/en/YourEntity.json
rm -rf src/main/webapp/i18n/fr/YourEntity.json

并从 config/liquibase/master.xml 中删除引用：

<?xml version="1.0" encoding="utf-8"?>
<databaseChangeLog
xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.1.xsd">

<include file="classpath:config/liquibase/changelog/00000000000000_initial_schema.xml" relativeToChangelogFile="false"/>
<include file="classpath:config/liquibase/changelog/20150307175923_added_entity_Company.xml" relativeToChangelogFile="false"/>
<include file="classpath:config/liquibase/changelog/20150307180142_added_entity_UserTypeRecruiter.xml" relativeToChangelogFile="false"/>
<include file="classpath:config/liquibase/changelog/20150307180338_added_entity_UserTypeCandidate.xml" relativeToChangelogFile="false"/>
<include file="classpath:config/liquibase/changelog/20150307180448_added_entity_QuestionType.xml" relativeToChangelogFile="false"/>
<include file="classpath:config/liquibase/changelog/20150307180612_added_entity_Question.xml" relativeToChangelogFile="false"/>
<include file="classpath:config/liquibase/changelog/20150307180849_added_entity_Answer.xml" relativeToChangelogFile="false"/>
<include file="classpath:config/liquibase/changelog/20150307181033_added_entity_CandidateAnswer.xml" relativeToChangelogFile="false"/>
<!--<include file="classpath:config/liquibase/changelog/20150307181249_added_entity_your_removed_entity.xml" relativeToChangelogFile="false"/>-->
<include file="classpath:config/liquibase/changelog/20150307182736_added_entity_ExamTemplate.xml" relativeToChangelogFile="false"/>
<include file="classpath:config/liquibase/changelog/20150307182950_added_entity_Exam.xml" relativeToChangelogFile="false"/>
<!-- JHipster will add liquibase changelogs here -->

【讨论】：

请参考时髦版本以及您选择使用 liquibase 的事实。

【解决方案4】：

你说得对，删除命令会很有用。但是这个命令今天不存在。也许它会被添加。如果要删除实体，则必须手动执行。因此，请删除为您的实体生成的所有文件：域、存储库、rest、测试、Angularjs 控制器和服务、HTML 视图、菜单中的链接、HTML 视图

【讨论】：

在使用 jhipster 添加新实体后修改现有实体中的关系非常手动（容易出错）。将现有实体（例如书）中的关系（或添加新属性）自动更改为新实体（例如图书馆）的正确方法是什么？为什么命令“yo jhipster:entity book”在运行第二次（或多次）时不允许编辑书籍实体以添加新的属性和关系？当前的方法需要预先完全理解实体模型。
您可以通过编辑在 .jhipster 下找到的相应 json 文件并从中删除关系来清理对现已删除实体的引用。然后重新运行子生成器 (yo jhipster:entity ) 以重新生成文件。明智的做法是在版本控制下执行此操作，以便您可以查看所做的更改。

【解决方案5】：

很简单，您只需删除目录 .jhipster/entityName.json 上的实体即可。

您可以再次运行“yo:jhipster 实体”并覆盖其他所有内容。

模因。-

【讨论】：

很好；如果您希望完全删除实体，则需要手动删除一些文件： ./src/test/java/.../web/rest/BookResourceIntTest.java ./src/test/gatling/simulations/BookGatlingTest.scala ./src/main/java/.../web/rest/BookResource.java ./src/main/java/.../repository/BookRepository.java ./src/main/java/.../repository/ search/BookSearchRepository.java ./src/main/resources/config/liquibase/changelog/20160502221559_added_entity_Book.xml

【解决方案6】：

已编辑：为较新版本的 jhipster 3.9.0 添加脚本

我的 jhipster Release 2.26.2 的 delete-entity.sh 脚本，基于 @shacharsol 的回答。

用法：./delete-entity GROUP_ID ENTITY_NAME

GROUP_ID：com/subpackage/and/so/on/（以'/'结尾）

ENTITY_NAME：firstLowercaseNameOfEntity

示例：./delete-entity uz/javlon/transInfo

#!/usr/bin/env bash

echo "################";

if [ -z "$1" ];
then
    printf "Required argument GROUP_ID is not set. \nUsage: ./delete-entity.sh GROUP_ID ENTITY_NAME.\n";
    exit 1;
else
    GROUP_ID=$1;
    echo "GROUP_ID is set to '$1'.";
fi

if [ -z "$2" ];
then
    printf "Required argument ENTITY_NAME is not set. \nUsage: ./delete-entity.sh GROUP_ID ENTITY_NAME .\n";
    exit 1;
else
    ENTITY_NAME=$2;
    echo "ENTITY_NAME is set to '$2'.";
fi

echo;

rm -rf src/main/resources/config/liquibase/changelog/*_added_entity_${ENTITY_NAME^}.xml
rm -rf src/main/java/${GROUP_ID}domain/${ENTITY_NAME^}.java
rm -rf src/main/java/${GROUP_ID}repository/${ENTITY_NAME^}Repository.java
rm -rf src/main/java/${GROUP_ID}repository/search/${ENTITY_NAME^}SearchRepository.java
rm -rf src/main/java/${GROUP_ID}web/rest/${ENTITY_NAME^}Resource.java

rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}/${ENTITY_NAME}.js
rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}/${ENTITY_NAME}s.html
rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}/${ENTITY_NAME}-detail.html
rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}/${ENTITY_NAME}-detail.controller.js
rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}/${ENTITY_NAME}.controller.js
rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}/${ENTITY_NAME}-dialog.html
rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}/${ENTITY_NAME}-dialog.controller.js
rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}/${ENTITY_NAME}-delete-dialog.html
rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}/${ENTITY_NAME}-delete-dialog.controller.js
rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}

rm -rf src/main/webapp/scripts/components/entities/${ENTITY_NAME}/${ENTITY_NAME}.service.js
rm -rf src/main/webapp/scripts/components/entities/${ENTITY_NAME}/${ENTITY_NAME}.search.service.js
rm -rf src/main/webapp/scripts/components/entities/${ENTITY_NAME}

rm -rf src/test/java/${GROUP_ID}web/rest/${ENTITY_NAME^}ResourceIntTest.java
rm -rf src/test/gatling/simulations/${ENTITY_NAME^}GatlingTest.scala
rm -rf src/test/javascript/spec/app/entities/${ENTITY_NAME}/${ENTITY_NAME}-detail.controller.spec.js
rm -rf src/test/javascript/spec/app/entities/${ENTITY_NAME}

rm -rf src/main/webapp/i18n/en/${ENTITY_NAME}.json
rm -rf src/main/webapp/i18n/ru/${ENTITY_NAME}.json
rm -rf src/main/webapp/i18n/uz/${ENTITY_NAME}.json

rm -rf ./.jhipster/${ENTITY_NAME^}.json

echo;
echo "Deleting ${ENTITY_NAME^} is completed.";
echo "################";

我为 jhipster Release 3.9.0 编写的另一个 delete-entity.sh 脚本，基于 @Tevfik Kiziloren 的回答。

#!/usr/bin/env bash

echo;
if [ -z "$1" ];
then
    printf "Required argument GROUP_ID is not set. \nUsage: ./delete-entity.sh GROUP_ID ENTITY_NAME.\n";
    exit 1;
else
    GROUP_ID=$1;
    echo "GROUP_ID is set to '$1'.";
fi

if [ -z "$2" ];
then
    printf "Required argument ENTITY_NAME is not set. \nUsage: ./delete-entity.sh GROUP_ID ENTITY_NAME .\n";
    exit 1;
else
    ENTITY_NAME=$2;
    JAVA_ENTITY_NAME=`echo ${ENTITY_NAME:0:1} | tr  '[a-z]' '[A-Z]'`${ENTITY_NAME:1}
    echo "ENTITY_NAME is set to '$2'."
    echo "Java entity name inferred as: '${JAVA_ENTITY_NAME}'.";
fi

JAVA_ENTITY_NAME=`echo ${ENTITY_NAME:0:1} | tr  '[a-z]' '[A-Z]'`${ENTITY_NAME:1}
UNDERSCORED_FOLDER_NAME=`echo ${ENTITY_NAME} | sed -r 's/([a-z0-9])([A-Z])/\1-\L\2/g'`
echo ${UNDERSCORED_FOLDER_NAME};

QUESTION=$'You may want to keep definition file(.jhipster/'${JAVA_ENTITY_NAME}'.json) in case you want to regenerate entity in the future.\nDo you want to delete entity definition file also?'

while true; do
    read -p "${QUESTION}" yn
    case $yn in
        [Yy]* ) rm -rf ./.jhipster/${ENTITY_NAME}.json; break;;
        [Nn]* ) break;;
        * ) echo "Please answer yes or no.";;
    esac
done

echo;
echo "Starting to delete files...";

rm -rf src/main/resources/config/liquibase/changelog/*_added_entity_${JAVA_ENTITY_NAME}.xml
rm -rf src/main/java/${GROUP_ID}domain/${JAVA_ENTITY_NAME}.java
rm -rf src/main/java/${GROUP_ID}repository/${JAVA_ENTITY_NAME}Repository.java
rm -rf src/main/java/${GROUP_ID}service/${JAVA_ENTITY_NAME}Service.java
rm -rf src/main/java/${GROUP_ID}service/impl/${JAVA_ENTITY_NAME}ServiceImpl.java
rm -rf src/main/java/${GROUP_ID}repository/search/${JAVA_ENTITY_NAME}SearchRepository.java
rm -rf src/main/java/${GROUP_ID}web/rest/${JAVA_ENTITY_NAME}Resource.java
rm -rf src/main/java/${GROUP_ID}web/rest/dto/${JAVA_ENTITY_NAME}DTO.java
rm -rf src/main/java/${GROUP_ID}web/rest/mapper/${JAVA_ENTITY_NAME}Mapper.java
rm -rf target/generated-sources/${GROUP_ID}web/rest/mapper/${JAVA_ENTITY_NAME}MapperImpl.java

rm -rf src/main/webapp/app/entities/${UNDERSCORED_FOLDER_NAME}/*

rm -rf src/test/java/${GROUP_ID}web/rest/${JAVA_ENTITY_NAME}ResourceIntTest.java
rm -rf src/test/gatling/simulations/${JAVA_ENTITY_NAME}GatlingTest.scala
rm -rf src/test/javascript/spec/app/entities/${UNDERSCORED_FOLDER_NAME}/*
rm -rf src/test/javascript/spec/app/entities/${UNDERSCORED_FOLDER_NAME}

rm -rf src/main/webapp/i18n/en/${ENTITY_NAME}.json
rm -rf src/main/webapp/i18n/fr/${ENTITY_NAME}.json
rm -rf src/main/webapp/i18n/ru/${ENTITY_NAME}.json
rm -rf src/main/webapp/i18n/uz/${ENTITY_NAME}.json

echo "Deleting entity '${ENTITY_NAME}' is completed.";
echo;
echo "-----------------------------------------------------";
echo "Do not forget to manually correct these files also:  ";
echo "-----------------------------------------------------";
echo " --> src/main/webapp/index.html"
echo " --> src/main/webapp/scripts/compopnents/navbar.html"
echo " --> src/main/webapp/i18n/**/global.json"
echo " --> src/main/resources/config/liquibase/master.xml (if you use liquibase)"
echo " --> src/main/resources/config/mongeez/master.xml   (if you use mongodb)"

【讨论】：

【解决方案7】：

在 jHipster 7.0.1 中，您应该删除以下文件：

jhipster/[EntityName].json
src/main/java/[base package]/domain/[EntityName].java
src/main/java/[base package]/repository/[EntityName]Repository.java
src/main/java/[base package]/repository/search/[EntityName]SearchRepository.java
src/main/java/[base package]/service/[EntityName]Service.java
src/main/java/[base package]/service/dto/[EntityName]DTO.java
src/main/java/[base package]/service/impl/[EntityName]ServiceImpl.java
src/main/java/[base package]/service/mapper/[EntityName]Mapper.java
src/main/java/[base package]/web/rest/[EntityName]Resource.java
src/main/resources/config/liquibase/changelog/*_added_entity_[EntityName].xml
src/main/resources/config/liquibase/changelog/*_added_entity_constraints_[EntityName].xml
src/main/resources/config/liquibase/fake-data/[entity_name].csv
src/test/java/[base package]/domain/[EntityName]Test.java
src/test/java/[base package]/repository/search/[EntityName]SearchRepositoryMockConfiguration.java
src/test/java/[base package]/service/dto/[EntityName]DTOTest.java
src/test/java/[base package]/service/mapper/[EntityName]MapperTest.java
src/test/java/[base package]/web/rest/[EntityName]ResourceIT.java

删除整个目录：

src/main/webapp/app/entities/[entity-name]

从以下文件中删除引用：

.yo-rc.json
src/main/java/[base package]/config/CacheConfiguration.java
src/main/resources/config/liquibase/master.xml
src/main/webapp/app/entities/entity-routing.module.ts
src/main/webapp/app/layouts/navbar/navbar.component.html
src/main/webapp/i18n/en/global.json
src/main/webapp/i18n/pt-br/global.json

删除数据库并让应用在启动时再次生成它。如果您无法删除数据库，而不是删除 liquibase 文件，您需要创建一个更改日志来删除过时的表。

显然取决于您生成项目的方式，您可能拥有更少的文件（或者更多的文件）。

【讨论】：

【解决方案8】：

我对 SparX 和 Meme 的回答做了一些补充。

如果您在生成实体时选择了“使用 DTO”，则需要删除为实体生成的 DTO 文件，
JHipster 使用 Mapstruct 来映射 Entity 和 DTO。如果你使用 DTO，那么你需要删除 JHipster 为你生成的 mapper 类
您需要从 "webapp/index.html" 中删除已删除实体的 javascript 文件引用
您需要从 "webapp/i18n/*/global.json" 中删除已删除实体的 i18n 定义
您需要从 “webapp/scripts/components/navbar.html”中删除菜单链接
如果你以后想更新更新实体定义和重新生成实体，你可以保留./.jhipster/${ENTITY_NAME}.json

我更新了 SparX 的 bash 脚本（delete-entity.sh）来询问是否删除实体定义文件。此外，"${ENTITY_NAME^}" 语法（用于将实体名称的第一个字母转换为大写）不在旧 bash 版本（例如 3.2）中运行。

更新的 bash 脚本如下。只需将此脚本放在 pom.xml 所在的文件夹中。

示例用例：如果您的项目的 groupId "com.example" 并且您要删除名为 "city" 的实体，下面给出一个示例命令：

./delete-entity.sh com/example/city

#!/usr/bin/env bash
echo;
if [ -z "$1" ];
then
    printf "Required argument GROUP_ID is not set. \nUsage: ./delete-entity.sh GROUP_ID ENTITY_NAME.\n";
    exit 1;
else
    GROUP_ID=$1;
    echo "GROUP_ID is set to '$1'.";
fi

if [ -z "$2" ];
then
    printf "Required argument ENTITY_NAME is not set. \nUsage: ./delete-entity.sh GROUP_ID ENTITY_NAME .\n";
    exit 1;
else
    ENTITY_NAME=$2;
    JAVA_ENTITY_NAME=`echo ${ENTITY_NAME:0:1} | tr  '[a-z]' '[A-Z]'`${ENTITY_NAME:1} 
    echo "ENTITY_NAME is set to '$2'." 
    echo "Java entity name inferred as: '${JAVA_ENTITY_NAME}'.";
fi

JAVA_ENTITY_NAME=`echo ${ENTITY_NAME:0:1} | tr  '[a-z]' '[A-Z]'`${ENTITY_NAME:1} 


QUESTION=$'You may want to keep definition file(.jhipster/${JAVA_ENTITY_NAME}.json) in case you want to regenerate entity in the future.\nDo you want to delete entity definition file also?'

while true; do
    read -p "${QUESTION}" yn
    case $yn in
        [Yy]* ) rm -rf ./.jhipster/${ENTITY_NAME}.json; break;;
        [Nn]* ) break;;
        * ) echo "Please answer yes or no.";;
    esac
done

echo;
echo "Starting to delete files...";

rm -rf src/main/resources/config/liquibase/changelog/*_added_entity_${JAVA_ENTITY_NAME}.xml
rm -rf src/main/java/${GROUP_ID}domain/${JAVA_ENTITY_NAME}.java
rm -rf src/main/java/${GROUP_ID}repository/${JAVA_ENTITY_NAME}Repository.java
rm -rf src/main/java/${GROUP_ID}service/${JAVA_ENTITY_NAME}Service.java
rm -rf src/main/java/${GROUP_ID}service/impl/${JAVA_ENTITY_NAME}ServiceImpl.java
rm -rf src/main/java/${GROUP_ID}repository/search/${JAVA_ENTITY_NAME}SearchRepository.java
rm -rf src/main/java/${GROUP_ID}web/rest/${JAVA_ENTITY_NAME}Resource.java
rm -rf src/main/java/${GROUP_ID}web/rest/dto/${JAVA_ENTITY_NAME}DTO.java
rm -rf src/main/java/${GROUP_ID}web/rest/mapper/${JAVA_ENTITY_NAME}Mapper.java
rm -rf target/generated-sources/${GROUP_ID}web/rest/mapper/${JAVA_ENTITY_NAME}MapperImpl.java

rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}/${ENTITY_NAME}.js
rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}/${ENTITY_NAME}s.html
rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}/${ENTITY_NAME}-detail.html
rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}/${ENTITY_NAME}-detail.controller.js
rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}/${ENTITY_NAME}.controller.js
rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}/${ENTITY_NAME}-dialog.html
rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}/${ENTITY_NAME}-dialog.controller.js
rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}/${ENTITY_NAME}-delete-dialog.html
rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}/${ENTITY_NAME}-delete-dialog.controller.js
rm -rf src/main/webapp/scripts/app/entities/${ENTITY_NAME}

rm -rf src/main/webapp/scripts/components/entities/${ENTITY_NAME}/${ENTITY_NAME}.service.js
rm -rf src/main/webapp/scripts/components/entities/${ENTITY_NAME}/${ENTITY_NAME}.search.service.js
rm -rf src/main/webapp/scripts/components/entities/${ENTITY_NAME}

rm -rf src/test/java/${GROUP_ID}web/rest/${ENTITY_NAME}ResourceIntTest.java
rm -rf src/test/gatling/simulations/${ENTITY_NAME}GatlingTest.scala
rm -rf src/test/javascript/spec/app/entities/${ENTITY_NAME}/${ENTITY_NAME}-detail.controller.spec.js
rm -rf src/test/javascript/spec/app/entities/${ENTITY_NAME}

rm -rf src/main/webapp/i18n/en/${ENTITY_NAME}.json
rm -rf src/main/webapp/i18n/fr/${ENTITY_NAME}.json
rm -rf src/main/webapp/i18n/ru/${ENTITY_NAME}.json
rm -rf src/main/webapp/i18n/uz/${ENTITY_NAME}.json

echo "Deleting entity '${ENTITY_NAME}' is completed.";
echo;
echo "-----------------------------------------------------";
echo "Do not forget to manually correct these files also:  ";
echo "-----------------------------------------------------";
echo " --> src/main/webapp/index.html"
echo " --> src/main/webapp/scripts/compopnents/navbar.html"
echo " --> src/main/webapp/i18n/**/global.json"
echo " --> src/main/resources/config/liquibase/master.xml (if you use liquibase)"
echo " --> src/main/resources/config/mongeez/master.xml   (if you use mongodb)"

【讨论】：