Following the solution here, I wanted to add two additional datasources for my application (both SQL Server). My setup would be:
- Let JHipster have its own database, accessing it with JPA. In development environment use H2, in production SQL Server.
- Add two SQL Server dataSource that I would use only with JDBC (
JdbcTemplate). These areread-onlydatabases and I only need to run queries on them.
So, I generated a new JHipster Monolithic app (6.0.1), with disk-based h2 for dev and SQL Server in production. I changed the DatabaseConfigration to this:
@Configuration
@EnableJpaRepositories(".....repository")
@EnableJpaAuditing(auditorAwareRef = "springSecurityAuditorAware")
@EnableTransactionManagement
public class DatabaseConfiguration {
private final Logger log = LoggerFactory.getLogger(DatabaseConfiguration.class);
private final Environment env;
public DatabaseConfiguration(Environment env) {
this.env = env;
}
/**
* Open the TCP port for the H2 database, so it is available remotely.
*
* @return the H2 database TCP server.
* @throws SQLException if the server failed to start.
*/
@Bean(initMethod = "start", destroyMethod = "stop")
@Profile(JHipsterConstants.SPRING_PROFILE_DEVELOPMENT)
public Object h2TCPServer() throws SQLException {
String port = getValidPortForH2();
log.debug("H2 database is available on port {}", port);
return H2ConfigurationHelper.createServer(port);
}
private String getValidPortForH2() {
int port = Integer.parseInt(env.getProperty("server.port"));
if (port < 10000) {
port = 10000 + port;
} else {
if (port < 63536) {
port = port + 2000;
} else {
port = port - 2000;
}
}
return String.valueOf(port);
}
@Bean
@Primary
@ConfigurationProperties("spring.datasource")
public DataSourceProperties defaultDataSourceProperties() {
return new DataSourceProperties();
}
@Bean
@Primary
@ConfigurationProperties("spring.datasource.hikari")
public DataSource defaultDataSource() {
return defaultDataSourceProperties().initializeDataSourceBuilder()
//.type(HikariDataSource.class)
.build();
}
@Bean(name = "entityManagerFactory")
@Primary
public LocalContainerEntityManagerFactoryBean customerEntityManagerFactory(
EntityManagerFactoryBuilder builder) {
return builder
.dataSource(defaultDataSource())
.packages(MyMainApplicationClassApp.class)
.persistenceUnit("default")
.build();
}
@Bean(name = "transactionManager")
@Primary
public JpaTransactionManager db2TransactionManager(@Qualifier("entityManagerFactory") final EntityManagerFactory emf) {
JpaTransactionManager transactionManager = new JpaTransactionManager();
transactionManager.setEntityManagerFactory(emf);
return transactionManager;
}
}
And I created a new config class, named AdditionalDatabaseConfiguration and first I wanted to just add one of my additional databases:
@Configuration
@EnableTransactionManagement
public class AdditionalDatabaseConfiguration {
@Bean
@ConfigurationProperties("sync.datasource")
public DataSourceProperties SyncDataSourceProperties() {
return new DataSourceProperties();
}
@Bean
@ConfigurationProperties("sync.datasource.hikari")
public HikariDataSource SyncDataSource() {
var properties = SyncDataSourceProperties();
return properties.initializeDataSourceBuilder()
.type(HikariDataSource.class)
.build();
}
}
I did not change the default spring.datasource configuration yet, but I did add config for the new ds:
sync:
datasource:
type: com.zaxxer.hikari.HikariDataSource
url: jdbc:sqlserver://***:1433;database=***
username: ****
password: ***
testOnBorrow: true
validationQuery: SELECT 1
hikari:
poolName: HikariSync
auto-commit: false
connection-test-query: SELECT 1
maximum-pool-size: 2
idle-timeout: 10000
data-source-properties:
cachePrepStmts: true
prepStmtCacheSize: 250
prepStmtCacheSqlLimit: 2048
useServerPrepStmts: true
The app compiles and starts without error or warning and the main page of the application loads too. However If I try to login, I get an exception:
https://pastebin.com/raw/HWSEQGyq
org.springframework.dao.InvalidDataAccessResourceUsageException: could not prepare statement; SQL [call next value for sequenceGenerator]; nested exception is org.hibernate.exception.SQLGrammarException: could not prepare statement
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:279)
at org.sprin.....
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139)
... 130 common frames omitted
Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Sequence "SEQUENCEGENERATOR" not found; SQL statement:
call next value for sequenceGenerator [90036-199]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:573)
at org.h2.message.DbException.getJdbcSQLException(DbException.java:427)
at org.h2.message.DbException.get(DbException.java:205)
at org.h2.message.DbException.get(DbException.java:181)
at org.h2.command.Parser.readSequence(Parser.java:7196)
at org.h2.command.Parser.readTermWithIdentifier(Parser.java:4192)
at org.h2.command.Parser.readTerm(Parser.java:3972)
at org.h2.command.Parser.readFactor(Parser.java:3090)
at org.h2.command.Parser.readSum(Parser.java:3077)
at org.h2.command.Parser.readConcat(Parser.java:3047)
at org.h2.command.Parser.readCondition(Parser.java:2900)
at org.h2.command.Parser.readAnd(Parser.java:2872)
at org.h2.command.Parser.readExpression(Parser.java:2864)
at org.h2.command.Parser.parseCall(Parser.java:6043)
at org.h2.command.Parser.parsePrepared(Parser.java:848)
at org.h2.command.Parser.parse(Parser.java:788)
at org.h2.command.Parser.parse(Parser.java:760)
at org.h2.command.Parser.prepareCommand(Parser.java:683)
at org.h2.engine.Session.prepareLocal(Session.java:627)
at org.h2.engine.Session.prepareCommand(Session.java:565)
at org.h2.jdbc.JdbcConnection.prepareCommand(JdbcConnection.java:1292)
at org.h2.jdbc.JdbcPreparedStatement.<init>(JdbcPreparedStatement.java:77)
at org.h2.jdbc.JdbcConnection.prepareStatement(JdbcConnection.java:349)
at com.zaxxer.hikari.pool.ProxyConnection.prepareStatement(ProxyConnection.java:311)
at com.zaxxer.hikari.pool.HikariProxyConnection.prepareStatement(HikariProxyConnection.java)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$1.doPrepare(StatementPreparerImpl.java:87)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:172)
... 165 common frames omitted
Probably my @Primary datasource configuration/code isn't correct. Could anyone please tell me what to add?
Edit.: If I remove my datasource configs, I can login, so it is the cause of the error.
Edit.: The main problem is Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Sequence "SEQUENCEGENERATOR" not found; SQL statement:
call next value for sequenceGenerator [90036-199]
Edit2.: Setting the dialect for the default datasource did not solve the issue (using yml):
jpa:
database-platform: io.github.jhipster.domain.util.FixedH2Dialect <-- maybe this is the issue?
database: H2
show-sql: true
properties:
hibernate.id.new_generator_mappings: true
hibernate.connection.provider_disables_autocommit: true
hibernate.cache.use_second_level_cache: true
hibernate.cache.use_query_cache: false
hibernate.generate_statistics: false
hibernate.dialect: org.hibernate.dialect.H2Dialect <-- this
Edit3: I generated a new project without using H2 on dev profile (directly SQL Server), adding the same multi datasource config and the problem persists. I just get a com.microsoft.sqlserver.jdbc.SQLServerException: Invalid object name 'sequenceGenerator'. exception.
Edit4.: My MSSQL problem can be solved by changing the generator name to sequence_generator in domain.User and domain.PersistentAuditEvent files. H2 specific problem?
tasukete kudasai
