Package org.apache.drill.metastore.rdbms.util

Interface DbHelper

All Known Implementing Classes:

DbHelper.NoOpHelper, DbHelper.SQLiteHelper

public interface DbHelper

Provides methods to configure database prior to data source initialization.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	DbHelper.NoOpHelper	No-op implementation of DbHelper for those databases that do not require any preparation before data source creation.
static class	DbHelper.SQLiteHelper	SQLite implementation of DbHelper, creates database path if needed.

Method Summary

Modifier and Type	Method	Description
static DbHelper	init(DrillConfig config)	Initializes DbHelper implementation based on SQLDialect.
void	prepareDatabase()	Prepares database prior to data source configuration.

Method Details

init

static DbHelper init(DrillConfig config)

Initializes DbHelper implementation based on SQLDialect.

Parameters:

config - Metastore config

Returns:

DBHelper instance

prepareDatabase

void prepareDatabase()

Prepares database prior to data source configuration.