Version: 3.10.1
Postgres 9.6 server
JDBC Driver: org.postgresql:postgresql:42.1.4
T
The testcase found below will not work. It will say
Caused by: org.postgresql.util.PSQLException: ERROR: schema "POLYGENE"
does not exist
when trying to create the table.
Further looking, when the commit() is issued inside the
dsl.createSchema( "POLYGENE" ).execute();
the transaction state is in "IDLE" mode, and the commit is not executed.
The reason for that is that some ROLLBACK has been executed as part of a
close() that I don't understand. The commit() not executing is silently
ignored in driver, and nothing happens. Hence the failure on the creation
of the table.
Ok, so that might have been a bug.
Swap the comments of
DataSource dataSource = dbcpDataSource( host, port );
// DataSource dataSource = rawDataSource(host,port);
and the test case works. Now, that could possibly be that there is an
autoCommit going on. I have not investigated that.
Swap those comments back to original, and the test fails (after manually
cleaning up the database).
Finally, swap the
TransactionProvider transactionProvider = new
PolygeneTransactionProvider( new ThreadLocalTransactionProvider(
connectionProvider, false ) );
// TransactionProvider transactionProvider = new
ThreadLocalTransactionProvider( connectionProvider, false );
and the testcase also works. The wrapper couldn't be simpler, but why does
that cause a failure of this nature? Why is JOOQ checking the instance type
for behavior, instead of having proper methods for it?
package org.hedhman.niclas;
import javax.sql.DataSource;
import org.apache.commons.dbcp2.BasicDataSource;
import org.jooq.Configuration;
import org.jooq.ConnectionProvider;
import org.jooq.DSLContext;
import org.jooq.Field;
import org.jooq.Name;
import org.jooq.SQLDialect;
import org.jooq.Schema;
import org.jooq.TransactionContext;
import org.jooq.TransactionProvider;
import org.jooq.conf.RenderNameStyle;
import org.jooq.conf.Settings;
import org.jooq.exception.DataAccessException;
import org.jooq.impl.DSL;
import org.jooq.impl.DataSourceConnectionProvider;
import org.jooq.impl.DefaultConfiguration;
import org.jooq.impl.ThreadLocalTransactionProvider;
import org.junit.Test;
import org.postgresql.ds.PGSimpleDataSource;
import org.postgresql.jdbc.AutoSave;
import static org.apache.polygene.entitystore.sql.TableFields.
tableNameColumn;
import static org.apache.polygene.entitystore.sql.TypesTable.makeField;
public class Experiment
{
@Test
public void test1()
throws Exception
{
String host = "127.0.0.1";
int port = 5432;
DataSource dataSource = dbcpDataSource( host, port );
// DataSource dataSource = rawDataSource(host,port);
Settings settings = new Settings().withRenderNameStyle( RenderNameStyle.QUOTED
);
SQLDialect dialect = SQLDialect.POSTGRES;
Schema schema = DSL.schema( DSL.name( "POLYGENE" ) );
ConnectionProvider connectionProvider = new DataSourceConnectionProvider(
dataSource );
TransactionProvider transactionProvider = new PolygeneTransactionProvider( new
ThreadLocalTransactionProvider( connectionProvider, false ) );
// TransactionProvider transactionProvider = new
ThreadLocalTransactionProvider( connectionProvider, false );
Configuration configuration = new DefaultConfiguration()
.set( dialect )
.set( connectionProvider )
.set( transactionProvider )
.set( settings );
DSLContext dsl = DSL.using( configuration );
Field<String> identityColumn = makeField( "_identity", String.class );
Name tableName = DSL.name( schema.getName(), "TESTTABLE" );
dsl.transaction( t -> {
dsl.createSchema( "POLYGENE" ).execute();
} );
dsl.transaction( t -> {
dsl.createTableIfNotExists( tableName )
.column( identityColumn )
.execute();
});
}
private DataSource dbcpDataSource( String host, int port )
throws Exception
{
BasicDataSource pool = new BasicDataSource();
String driverClass = "org.postgresql.Driver";
Class.forName( driverClass );
pool.setDriverClassName( driverClass );
pool.setUrl( "jdbc:postgresql://" + host + ":" + port + "/jdbc_test_db" );
pool.setUsername( System.getProperty( "user.name" ) );
pool.setPassword( "ThisIsGreat!" );
pool.setDefaultAutoCommit( false );
return pool;
}
private DataSource rawDataSource( String host, int port )
throws Exception
{
PGSimpleDataSource datasource = new PGSimpleDataSource();
datasource.setUser( System.getProperty( "user.name" ) );
datasource.setPassword( "ThisIsGreat!" );
datasource.setAutosave( AutoSave.NEVER );
datasource.setUrl( "jdbc:postgresql://" + host + ":" + port + "/jdbc_test_db"
);
return datasource;
}
static class PolygeneTransactionProvider
implements TransactionProvider
{
private TransactionProvider delegate;
private PolygeneTransactionProvider( TransactionProvider delegate )
{
this.delegate = delegate;
}
@Override
public void begin( TransactionContext ctx )
throws DataAccessException
{
System.out.println( "\"------------------------------> begin( " + ctx + "
)" );
delegate.begin( ctx );
}
@Override
public void commit( TransactionContext ctx )
throws DataAccessException
{
System.out.println( "------------------------------> commit( " + ctx + " )"
);
delegate.commit( ctx );
}
@Override
public void rollback( TransactionContext ctx )
throws DataAccessException
{
System.out.println( "\"------------------------------> rollback( " + ctx + "
)" );
delegate.rollback( ctx );
}
}
}
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