Package io.debezium.connector.postgresql

Class TypeRegistry.SqlTypeMapper

java.lang.Object

io.debezium.connector.postgresql.TypeRegistry.SqlTypeMapper

Enclosing class:

TypeRegistry

private static class TypeRegistry.SqlTypeMapper
extends Object

Allows to obtain the SQL type corresponding to PG types. This uses a custom statement instead of going through PgDatabaseMetaData.getTypeInfo() as the latter causes N+1 SELECTs, making it very slow on installations with many custom types.

Author:

Gunnar Morling

Field Summary

Fields

Modifier and Type	Field	Description
private final PostgresConnection	connection
private final Set<String>	preloadedSqlTypes
private static final String	SQL_TYPE_DETAILS	Based on org.postgresql.jdbc.TypeInfoCache.getSQLType(String).
private final Map<String,Integer>	sqlTypesByPgTypeNames

Constructor Summary

Constructors

Modifier	Constructor	Description
private	SqlTypeMapper(PostgresConnection connection)

Method Summary

Modifier and Type	Method	Description
int	getSqlType(String typeName)
private static Map<String,Integer>	getSqlTypes(PostgresConnection connection)	Builds up a map of SQL (JDBC) types by PG type name; contains only values for non-core types.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

SQL_TYPE_DETAILS

private static final String SQL_TYPE_DETAILS

Based on org.postgresql.jdbc.TypeInfoCache.getSQLType(String). To emulate the original statement's behavior (which works for single types only), PG's DISTINCT ON extension is used to just return the first entry should a type exist in multiple schemas.

See Also:

• Constant Field Values

connection

private final PostgresConnection connection

preloadedSqlTypes

@Immutable
private final Set<String> preloadedSqlTypes

sqlTypesByPgTypeNames

@Immutable
private final Map<String,Integer> sqlTypesByPgTypeNames

Constructor Details

SqlTypeMapper

private SqlTypeMapper(PostgresConnection connection)
               throws SQLException

Throws:

SQLException

Method Details

getSqlType

public int getSqlType(String typeName)
               throws SQLException

Throws:

SQLException

getSqlTypes

private static Map<String,Integer> getSqlTypes(PostgresConnection connection)
                                        throws SQLException

Builds up a map of SQL (JDBC) types by PG type name; contains only values for non-core types.

Throws:

SQLException