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Merge pull request #11334 from chaos2418/JIRA-7816

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autogen key code cleanup
This commit is contained in:
kwoyke 2021-10-15 14:52:11 +02:00 committed by GitHub
commit 88c59a0196
7 changed files with 1 additions and 137 deletions
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1
persistence-modules/spring-jdbc/README.md
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- [Spring JDBC](https://www.baeldung.com/spring-jdbc-jdbctemplate)
- [Spring JdbcTemplate Unit Testing](https://www.baeldung.com/spring-jdbctemplate-testing)
- [Using a List of Values in a JdbcTemplate IN Clause](https://www.baeldung.com/spring-jdbctemplate-in-list)
- [Obtaining Auto-generated Keys in Spring JDBC](https://www.baeldung.com/spring-jdbc-autogenerated-keys)

1
persistence-modules/spring-jpa/README.md
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- [Sorting with JPA](https://www.baeldung.com/jpa-sort)
- [Self-Contained Testing Using an In-Memory Database](https://www.baeldung.com/spring-jpa-test-in-memory-database)
- [A Guide to Spring AbstractRoutingDatasource](https://www.baeldung.com/spring-abstract-routing-data-source)
- [Obtaining Auto-generated Keys in Spring JDBC](https://www.baeldung.com/spring-jdbc-autogenerated-keys)
- [Spring Data Annotations](http://www.baeldung.com/spring-data-annotations)
- More articles: [[next -->]](/spring-jpa-2)

38
spring-5/src/main/java/com/baeldung/jdbc/autogenkey/repository/MessageRepositoryJDBCTemplate.java
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package com.baeldung.jdbc.autogenkey.repository;
import java.sql.PreparedStatement;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.support.GeneratedKeyHolder;
import org.springframework.jdbc.support.KeyHolder;
import org.springframework.stereotype.Repository;
@Repository
public class MessageRepositoryJDBCTemplate {
@Autowired
JdbcTemplate jdbcTemplate;
final String INSERT_MESSAGE_SQL = "insert into sys_message (message) values(?) ";
public long insert(final String message) {
KeyHolder keyHolder = new GeneratedKeyHolder();
jdbcTemplate.update(connection -> {
PreparedStatement ps = connection.prepareStatement(INSERT_MESSAGE_SQL);
ps.setString(1, message);
return ps;
}, keyHolder);
return (long) keyHolder.getKey();
}
final String SELECT_BY_ID = "select message from sys_message where id = ?";
public String getMessageById(long id) {
return this.jdbcTemplate.queryForObject(SELECT_BY_ID, String.class, new Object[] { id });
}
}

29
spring-5/src/main/java/com/baeldung/jdbc/autogenkey/repository/MessageRepositorySimpleJDBCInsert.java
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package com.baeldung.jdbc.autogenkey.repository;
import java.util.HashMap;
import java.util.Map;
import javax.sql.DataSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.simple.SimpleJdbcInsert;
import org.springframework.stereotype.Repository;
@Repository
public class MessageRepositorySimpleJDBCInsert {
SimpleJdbcInsert messageInsert;
@Autowired
public MessageRepositorySimpleJDBCInsert(DataSource dataSource) {
messageInsert = new SimpleJdbcInsert(dataSource).withTableName("sys_message").usingGeneratedKeyColumns("id");
}
public long insert(String message) {
Map<String, Object> parameters = new HashMap<String, Object>(1);
parameters.put("message", message);
Number newId = messageInsert.executeAndReturnKey(parameters);
return (long) newId;
}
}

9
spring-5/src/main/resources/autogenkey-db.properties
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spring.datasource.url=jdbc:h2:mem:testdb;DB_CLOSE_ON_EXIT=FALSE
spring.datasource.username=sa
spring.datasource.password=
spring.datasource.driverClassName=org.h2.Driver
spring.jpa.hibernate.ddl-auto=create
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.H2Dialect
spring.datasource.initialize=true
spring.datasource.schema=classpath:autogenkey-schema.sql

5
spring-5/src/main/resources/autogenkey-schema.sql
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CREATE TABLE IF NOT EXISTS sys_message (
id bigint(20) NOT NULL AUTO_INCREMENT,
message varchar(100) NOT NULL,
PRIMARY KEY (id)
);

55
spring-5/src/test/java/com/baeldung/jdbc/autogenkey/GetAutoGenKeyByJDBCIntTest.java
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package com.baeldung.jdbc.autogenkey;
import static org.junit.jupiter.api.Assertions.assertEquals;
import org.junit.Ignore;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.test.context.junit4.SpringRunner;
import com.baeldung.jdbc.autogenkey.repository.MessageRepositoryJDBCTemplate;
import com.baeldung.jdbc.autogenkey.repository.MessageRepositorySimpleJDBCInsert;
@RunWith(SpringRunner.class)
@Ignore
public class GetAutoGenKeyByJDBCIntTest {
@Configuration
@EnableAutoConfiguration
@PropertySource("classpath:autogenkey-db.properties")
@ComponentScan(basePackages = { "com.baeldung.jdbc.autogenkey.repository" })
public static class SpringConfig {
}
@Autowired
MessageRepositorySimpleJDBCInsert messageRepositorySimpleJDBCInsert;
@Autowired
MessageRepositoryJDBCTemplate messageRepositoryJDBCTemplate;
final String MESSAGE_CONTENT = "Test";
@Test
public void insertJDBC_whenLoadMessageByKey_thenGetTheSameMessage() {
long key = messageRepositoryJDBCTemplate.insert(MESSAGE_CONTENT);
String loadedMessage = messageRepositoryJDBCTemplate.getMessageById(key);
assertEquals(MESSAGE_CONTENT, loadedMessage);
}
@Test
public void insertSimpleInsert_whenLoadMessageKey_thenGetTheSameMessage() {
long key = messageRepositorySimpleJDBCInsert.insert(MESSAGE_CONTENT);
String loadedMessage = messageRepositoryJDBCTemplate.getMessageById(key);
assertEquals(MESSAGE_CONTENT, loadedMessage);
}
}