删除编译错误

Author: honeymoose

persistence-modules/spring-data-jpa-crud/README.md

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+## Spring Data JPA - CRUD
+
+This module contains articles about CRUD operations in Spring Data JPA 
+
+### Relevant Articles: 
+- [Spring Data JPA – Derived Delete Methods](https://www.baeldung.com/spring-data-jpa-deleteby)
+- [Spring Data JPA Delete and Relationships](https://www.baeldung.com/spring-data-jpa-delete)
+- [INSERT Statement in JPA](https://www.baeldung.com/jpa-insert)
+- [Spring Data JPA Batch Inserts](https://www.baeldung.com/spring-data-jpa-batch-inserts)
+- [Batch Insert/Update with Hibernate/JPA](https://www.baeldung.com/jpa-hibernate-batch-insert-update)
+- [Difference Between save() and saveAndFlush() in Spring Data JPA](https://www.baeldung.com/spring-data-jpa-save-saveandflush)
+- [How to Implement a Soft Delete with Spring JPA](https://www.baeldung.com/spring-jpa-soft-delete)
+- More articles: [[next-->]](/persistence-modules/spring-data-jpa-crud-2)
+
+### Eclipse Config 
+After importing the project into Eclipse, you may see the following error:  
+"No persistence xml file found in project"
+
+This can be ignored: 
+- Project -> Properties -> Java Persistance -> JPA -> Error/Warnings -> Select Ignore on "No persistence xml file found in project"
+Or: 
+- Eclipse -> Preferences - Validation - disable the "Build" execution of the JPA Validator 

persistence-modules/spring-data-jpa-crud/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>spring-data-jpa-crud</artifactId>
+    <name>spring-data-jpa-crud</name>
+
+    <parent>
+        <groupId>com.baeldung</groupId>
+        <artifactId>parent-boot-2</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+        <relativePath>../../parent-boot-2</relativePath>
+    </parent>
+
+    <dependencies>
+        <!-- Prod Dependencies -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>${guava.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>net.ttddyy</groupId>
+            <artifactId>datasource-proxy</artifactId>
+            <version>${datasource-proxy.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.postgresql</groupId>
+            <artifactId>postgresql</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+        <!-- Test containers only dependencies -->
+        <dependency>
+            <groupId>org.testcontainers</groupId>
+            <artifactId>postgresql</artifactId>
+            <version>${testcontainers.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <!-- Test containers only dependencies -->
+    </dependencies>
+
+    <properties>
+        <datasource-proxy.version>1.4.1</datasource-proxy.version>
+        <testcontainers.version>1.12.2</testcontainers.version>
+    </properties>
+
+</project>

persistence-modules/spring-data-jpa-crud/src/main/java/com/baeldung/Application.java

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+package com.baeldung;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
+
+@SpringBootApplication
+@EnableJpaRepositories
+public class Application {
+
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+}

persistence-modules/spring-data-jpa-crud/src/main/java/com/baeldung/boot/Application.java

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+package com.baeldung.boot;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.domain.EntityScan;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
+
+@SpringBootApplication
+@EnableJpaRepositories("com.baeldung")
+@EntityScan("com.baeldung")
+public class Application {
+
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+
+}

persistence-modules/spring-data-jpa-crud/src/main/java/com/baeldung/boot/daos/CustomerRepository.java

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+package com.baeldung.boot.daos;
+
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
+
+import com.baeldung.boot.domain.Customer;
+
+/**
+ * JPA CrudRepository interface
+ * 
+ * @author ysharma2512
+ *
+ */
+@Repository
+@Transactional
+public interface CustomerRepository extends CrudRepository<Customer, Long>{
+
+}

persistence-modules/spring-data-jpa-crud/src/main/java/com/baeldung/boot/web/controllers/CustomerController.java

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+package com.baeldung.boot.web.controllers;
+
+import java.net.URISyntaxException;
+import java.util.Arrays;
+import java.util.List;
+
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.baeldung.boot.daos.CustomerRepository;
+import com.baeldung.boot.domain.Customer;
+
+/**
+ * A simple controller to test the JPA CrudRepository operations
+ * controllers
+ * 
+ * @author ysharma2512
+ *
+ */
+@RestController
+public class CustomerController {
+
+    CustomerRepository customerRepository;
+
+    public CustomerController(CustomerRepository customerRepository2) {
+        this.customerRepository = customerRepository2;
+    }
+
+    @PostMapping("/customers")
+    public ResponseEntity<List<Customer>> insertCustomers() throws URISyntaxException {
+        Customer c1 = new Customer("James", "Gosling");
+        Customer c2 = new Customer("Doug", "Lea");
+        Customer c3 = new Customer("Martin", "Fowler");
+        Customer c4 = new Customer("Brian", "Goetz");
+        List<Customer> customers = Arrays.asList(c1, c2, c3, c4);
+        customerRepository.saveAll(customers);
+        return ResponseEntity.ok(customers);
+    }
+
+}

persistence-modules/spring-data-jpa-crud/src/main/java/com/baeldung/entity/Employee.java

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+package com.baeldung.entity;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+
+@Entity
+public class Employee {
+
+    @Id
+    private Long id;
+    private String name;
+    
+    public Employee() {
+    }
+
+    public Employee(Long id, String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

persistence-modules/spring-data-jpa-crud/src/main/java/com/baeldung/repository/EmployeeRepository.java

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+package com.baeldung.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import com.baeldung.entity.Employee;
+
+public interface EmployeeRepository extends JpaRepository<Employee, Long> {
+
+}

persistence-modules/spring-data-jpa-crud/src/main/java/com/baeldung/repository/FruitRepository.java

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+package com.baeldung.repository;
+
+import java.util.List;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+
+import com.baeldung.entity.Fruit;
+
+@Repository
+public interface FruitRepository extends JpaRepository<Fruit, Long> {
+
+    Long deleteByName(String name);
+
+    List<Fruit> deleteByColor(String color);
+
+    Long removeByName(String name);
+
+    List<Fruit> removeByColor(String color);
+
+    @Modifying
+    @Query("delete from Fruit f where f.name=:name or f.color=:color")
+    int deleteFruits(@Param("name") String name, @Param("color") String color);
+}

persistence-modules/spring-data-jpa-crud/src/main/java/com/baeldung/softdelete/Product.java

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+package com.baeldung.softdelete;
+
+
+import java.io.Serializable;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+import org.hibernate.annotations.Filter;
+import org.hibernate.annotations.FilterDef;
+import org.hibernate.annotations.ParamDef;
+import org.hibernate.annotations.SQLDelete;
+
+@Entity
+@Table(name = "tbl_products")
+@SQLDelete(sql = "UPDATE tbl_products SET deleted = true WHERE id=?")
+@FilterDef(name = "deletedProductFilter", parameters = @ParamDef(name = "isDeleted", type = "boolean"))
+@Filter(name = "deletedProductFilter", condition = "deleted = :isDeleted")
+public class Product implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    private String name;
+
+    private double price;
+
+    private boolean deleted = Boolean.FALSE;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public double getPrice() {
+        return price;
+    }
+
+    public void setPrice(double price) {
+        this.price = price;
+    }
+
+    public boolean isDeleted() {
+        return deleted;
+    }
+
+    public void setDeleted(boolean deleted) {
+        this.deleted = deleted;
+    }
+
+}