spring boot + hibernate table names queried in lower case - postgresql

Question

I'm new to Spring boot and hibernate.
Below is my application prop file and the naming strategy implementation file.
When I try to push data to DB the below exception occurs ERROR: relation "nickname" does not exist.
I want access table name and column name always in uppercase.
Please help me to understand what went wrong.
NickName.java
#Entity
#Table(name="NICKNAME")
public class NickName {
application.properties
spring.datasource.url=jdbc:postgresql://192.168.239.129:5432/maindb
spring.datasource.username=pgdbuser
spring.datasource.password=pgdbuser
spring.jpa.generate-ddl=false
spring.jpa.properties.hibernate.current_session_context_class=org.springframework.orm.hibernate5.SpringSessionContext
logging.level.org.springframework.web=DEBUG
logging.level.org.hibernate=DEBUG
spring.jpa.properties.hibernate.show_sql=true
spring.jpa.properties.hibernate.use_sql_comments=true
spring.jpa.properties.hibernate.format_sql=true
spring.jpa.database-platform=org.hibernate.dialect.PostgreSQL82Dialect
spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
PhysicalNamingStrategyImpl.java
import java.io.Serializable;
import org.apache.commons.lang.StringUtils;
import org.hibernate.boot.model.naming.Identifier;
import org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl;
import org.hibernate.engine.jdbc.env.spi.JdbcEnvironment;
public class PhysicalNamingStrategyImpl extends PhysicalNamingStrategyStandardImpl implements Serializable{
public static final PhysicalNamingStrategyImpl INSTANCE = new PhysicalNamingStrategyImpl();
#Override
public Identifier toPhysicalTableName(Identifier name, JdbcEnvironment context) {
String nameModified = StringUtils.upperCase(name.getText());
// Do whatever you want with the name modification
return new Identifier(nameModified, name.isQuoted());
}
#Override
public Identifier toPhysicalColumnName(Identifier name, JdbcEnvironment context) {
String nameModified = StringUtils.upperCase(name.getText());
// Do whatever you want with the name modification
return new Identifier(nameModified, name.isQuoted());
}
}
Exception:
org.springframework.dao.InvalidDataAccessResourceUsageException: could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not extract ResultSet
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:242) ~[spring-orm-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:225) ~[spring-orm-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:527) ~[spring-orm-5.0.5.RELEASE.jar:5.0.5.RELEASE]
......
Caused by: org.hibernate.exception.SQLGrammarException: could not extract ResultSet
at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:106) ~[hibernate-core-5.2.16.Final.jar:5.2.16.Final]
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42) ~[hibernate-core-5.2.16.Final.jar:5.2.16.Final]
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:111) ~[hibernate-core-5.2.16.Final.jar:5.2.16.Final]
.......
Caused by: org.postgresql.util.PSQLException: ERROR: relation "nickname" does not exist
Position: 460
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2433) ~[postgresql-42.2.2.jar:42.2.2]
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2178) ~[postgresql-42.2.2.jar:42.2.2]
Update 1: changed app.prop file as below
spring.datasource.url=jdbc:postgresql://192.168.239.129:5432/maindb
spring.datasource.username=pgdbuser
spring.datasource.password=pgdbuser
spring.jpa.generate-ddl=false
spring.jpa.properties.hibernate.current_session_context_class=org.springframework.orm.hibernate5.SpringSessionContext
logging.level.org.springframework.web=DEBUG
logging.level.org.hibernate=DEBUG
spring.jpa.properties.hibernate.show_sql=true
spring.jpa.properties.hibernate.use_sql_comments=true
spring.jpa.properties.hibernate.format_sql=true
spring.jpa.database-platform=org.hibernate.dialect.PostgreSQL95Dialect
spring.jpa.hibernate.naming.physical-strategy=com.theroot.rester.PhysicalNamingStrategyImpl
Note :
In my sql client just now checked
select * from "NICKNAME"; --Works
select * from NICKNAME; --doesn't Work

Answer 1

This should work :
1) Get rid of PhysicalNamingStrategyImpl.java
2) Make changes in application.properties as below :
spring.jpa.properties.hibernate.dialect =
org.hibernate.dialect.PostgreSQL95Dialect spring.jpa.hibernate.naming.implicit-
strategy=org.hibernate.boot.model.naming.ImplicitNamingStrategyLegacyJpaImpl
spring.jpa.hibernate.naming.physical-strategy=
org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
spring.jpa.properties.hibernate.globally_quoted_identifiers=true
3) In #Table add schema as well. ie., #Table(name="table", schema="schemaname")
This worked for me with Postgresql 10 with Hibernate 5.x and Spring Boot 2.1.x. If you are using an older version of Postgresql, then use appropriate PostgreSqlxxDialect from Spring.