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BAEL-3971: Generate DDL script in Spring (#9120)

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* BAEL-3971: Generate DDL script in Spring

* BAEL-3971: implement review comments

* BAEL-3971: fix typo

* BAEL-3971: move code examples to module spring-data-jpa-5

Co-authored-by: ashleyfrieze <ashley@incredible.org.uk>
This commit is contained in:
Eduard Ardeleanu 2020-05-05 10:37:20 +03:00 committed by GitHub
parent 2d7bc17dda
commit 0cad7c5cc5
12 changed files with 298 additions and 1 deletions
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1
persistence-modules/pom.xml
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@ -61,6 +61,7 @@
<module>spring-data-jpa-2</module>
<module>spring-data-jpa-3</module>
<module>spring-data-jpa-4</module>
<module>spring-data-jpa-5</module>
<module>spring-data-keyvalue</module>
<module>spring-data-mongodb</module>
<module>spring-data-neo4j</module>

2
persistence-modules/spring-data-jpa-5/README.md
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@ -1,4 +1,5 @@
### Relevant Articles:
- [Spring JPA @Embedded and @EmbeddedId](TBD)
### Eclipse Config
@ -9,3 +10,4 @@ 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

2
persistence-modules/spring-data-jpa-5/pom.xml
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@ -33,5 +33,5 @@
<artifactId>h2</artifactId>
</dependency>
</dependencies>
</project>

12
persistence-modules/spring-data-jpa-5/src/main/java/com/baeldung/schemageneration/AccountApplication.java Normal file
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@ -0,0 +1,12 @@
package com.baeldung.schemageneration;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class AccountApplication {
public static void main(String[] args) {
SpringApplication.run(AccountApplication.class, args);
}
}

39
persistence-modules/spring-data-jpa-5/src/main/java/com/baeldung/schemageneration/HibernateUtil.java Normal file
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@ -0,0 +1,39 @@
package com.baeldung.schemageneration;
import com.baeldung.schemageneration.model.Account;
import com.baeldung.schemageneration.model.AccountSetting;
import org.hibernate.boot.Metadata;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.registry.StandardServiceRegistry;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Environment;
import org.hibernate.tool.hbm2ddl.SchemaExport;
import org.hibernate.tool.schema.TargetType;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.Map;
public class HibernateUtil {
/**
* Generates database create commands for the specified entities using Hibernate native API, SchemaExport.
* Creation commands are exported into the create.sql file.
*/
public static void generateSchema() {
Map<String, String> settings = new HashMap<>();
settings.put(Environment.URL, "jdbc:h2:mem:schema");
StandardServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(settings).build();
MetadataSources metadataSources = new MetadataSources(serviceRegistry);
metadataSources.addAnnotatedClass(Account.class);
metadataSources.addAnnotatedClass(AccountSetting.class);
Metadata metadata = metadataSources.buildMetadata();
SchemaExport schemaExport = new SchemaExport();
schemaExport.setFormat(true);
schemaExport.setOutputFile("create.sql");
schemaExport.createOnly(EnumSet.of(TargetType.SCRIPT), metadata);
}
}

74
persistence-modules/spring-data-jpa-5/src/main/java/com/baeldung/schemageneration/model/Account.java Normal file
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@ -0,0 +1,74 @@
package com.baeldung.schemageneration.model;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import java.util.ArrayList;
import java.util.List;
@Entity
@Table(name = "accounts")
public class Account {
@Id
@GeneratedValue
private Long id;
@Column(nullable = false, length = 100)
private String name;
@Column(name = "email_address")
private String emailAddress;
@OneToMany(mappedBy = "account", cascade = CascadeType.ALL)
private List<AccountSetting> accountSettings = new ArrayList<>();
public Account() {
}
public Account(String name, String emailAddress) {
this.name = name;
this.emailAddress = emailAddress;
}
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 String getEmailAddress() {
return emailAddress;
}
public void setEmailAddress(String emailAddress) {
this.emailAddress = emailAddress;
}
public List<AccountSetting> getAccountSettings() {
return accountSettings;
}
public void setAccountSettings(List<AccountSetting> accountSettings) {
this.accountSettings = accountSettings;
}
public void addAccountSetting(AccountSetting setting) {
this.accountSettings.add(setting);
setting.setAccount(this);
}
}

68
persistence-modules/spring-data-jpa-5/src/main/java/com/baeldung/schemageneration/model/AccountSetting.java Normal file
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@ -0,0 +1,68 @@
package com.baeldung.schemageneration.model;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
@Entity
@Table(name = "account_settings")
public class AccountSetting {
@Id
@GeneratedValue
private Long id;
@Column(name = "name", nullable = false)
private String settingName;
@Column(name = "value", nullable = false)
private String settingValue;
@ManyToOne()
@JoinColumn(name ="account_id", nullable = false)
private Account account;
public AccountSetting() {
}
public AccountSetting(String settingName, String settingValue) {
this.settingName = settingName;
this.settingValue = settingValue;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getSettingName() {
return settingName;
}
public void setSettingName(String settingName) {
this.settingName = settingName;
}
public String getSettingValue() {
return settingValue;
}
public void setSettingValue(String settingValue) {
this.settingValue = settingValue;
}
public Account getAccount() {
return account;
}
public void setAccount(Account account) {
this.account = account;
}
}

8
persistence-modules/spring-data-jpa-5/src/main/java/com/baeldung/schemageneration/repository/AccountRepository.java Normal file
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@ -0,0 +1,8 @@
package com.baeldung.schemageneration.repository;
import com.baeldung.schemageneration.model.Account;
import org.springframework.data.repository.CrudRepository;
public interface AccountRepository extends CrudRepository<Account, Long> {
Account findByName(String name);
}

8
persistence-modules/spring-data-jpa-5/src/main/java/com/baeldung/schemageneration/repository/AccountSettingRepository.java Normal file
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@ -0,0 +1,8 @@
package com.baeldung.schemageneration.repository;
import com.baeldung.schemageneration.model.AccountSetting;
import org.springframework.data.repository.CrudRepository;
public interface AccountSettingRepository extends CrudRepository<AccountSetting, Long> {
AccountSetting findByAccountId(Long accountId);
}

11
persistence-modules/spring-data-jpa-5/src/main/resources/application.properties
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@ -1,2 +1,13 @@
spring.datasource.url=jdbc:h2:mem:baeldung
# JPA-Schema-Generation
# Use below configuration to generate database schema create commands based on the entity models
# and export them into the create.sql file
#spring.jpa.properties.javax.persistence.schema-generation.scripts.action=create
#spring.jpa.properties.javax.persistence.schema-generation.scripts.create-target=create.sql
#spring.jpa.properties.javax.persistence.schema-generation.scripts.create-source=metadata
#spring.jpa.properties.hibernate.format_sql=true
spring.jpa.show-sql=true

72
persistence-modules/spring-data-jpa-5/src/test/java/com/baeldung/schemageneration/AccountRepositoryIntegrationTest.java Normal file
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@ -0,0 +1,72 @@
package com.baeldung.schemageneration;
import com.baeldung.schemageneration.model.Account;
import com.baeldung.schemageneration.model.AccountSetting;
import com.baeldung.schemageneration.repository.AccountRepository;
import com.baeldung.schemageneration.repository.AccountSettingRepository;
import org.junit.After;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
@RunWith(SpringRunner.class)
@SpringBootTest(classes = AccountApplication.class)
public class AccountRepositoryIntegrationTest {
private static final String USER_NAME = "Eduard";
private static final String USER_EMAIL_ADDRESS = "eduard@gmx.com";
private static final String ACCOUNT_SETTING_NAME = "Timezone";
private static final String ACCOUNT_SETTING_VALUE = "UTC+02";
@Autowired
private AccountRepository accountRepository;
@Autowired
private AccountSettingRepository accountSettingRepository;
@After
public void tearDown() {
accountRepository.deleteAll();
}
@Test
public void givenNewAccount_whenSave_thenSuccess() {
Account account = new Account(USER_NAME, USER_EMAIL_ADDRESS);
accountRepository.save(account);
assertEquals(1, accountRepository.count());
}
@Test
public void givenSavedAccount_whenFindByName_thenFound() {
Account account = new Account(USER_NAME, USER_EMAIL_ADDRESS);
accountRepository.save(account);
Account accountFound = accountRepository.findByName(USER_NAME);
assertNotNull(accountFound);
assertEquals(USER_NAME, accountFound.getName());
assertEquals(USER_EMAIL_ADDRESS, accountFound.getEmailAddress());
}
@Test
public void givenSavedAccount_whenAccountSettingIsAdded_thenPersisted() {
Account account = new Account(USER_NAME, USER_EMAIL_ADDRESS);
account.addAccountSetting(new AccountSetting(ACCOUNT_SETTING_NAME, ACCOUNT_SETTING_VALUE));
accountRepository.save(account);
Account accountFound = accountRepository.findByName(USER_NAME);
assertNotNull(accountFound);
AccountSetting accountSetting = accountSettingRepository.findByAccountId(accountFound.getId());
assertNotNull(accountSetting);
assertEquals(ACCOUNT_SETTING_NAME, accountSetting.getSettingName());
assertEquals(ACCOUNT_SETTING_VALUE, accountSetting.getSettingValue());
}
}

2
persistence-modules/spring-data-jpa-5/src/test/resources/application-test.properties
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@ -1 +1,3 @@
spring.jpa.hibernate.ddl-auto=update
spring.datasource.url=jdbc:h2:mem:baeldung