io.debezium.connector.postgresql.connection

Class PostgresConnection.SqlTypeMapper

java.lang.Object

io.debezium.connector.postgresql.connection.PostgresConnection.SqlTypeMapper

Enclosing class:

PostgresConnection

private static class PostgresConnection.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

See Also:

DBZ-899

Field Summary

Fields

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

Constructor Summary

Constructors

Modifier	Constructor and Description
private	SqlTypeMapper(Connection db, org.postgresql.core.TypeInfo typeInfo)

Method Summary

Modifier and Type	Method and Description
int	getSqlType(String typeName)
private static Map<String,Integer>	getSqlTypes(Connection db, org.postgresql.core.TypeInfo typeInfo) 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 Detail

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

typeInfo

private final org.postgresql.core.TypeInfo typeInfo

preloadedSqlTypes

private final Set<String> preloadedSqlTypes

sqlTypesByPgTypeNames

private final Map<String,Integer> sqlTypesByPgTypeNames

Constructor Detail

SqlTypeMapper

private SqlTypeMapper(Connection db,
                      org.postgresql.core.TypeInfo typeInfo)
               throws SQLException

Throws:

SQLException

Method Detail

getSqlType

public int getSqlType(String typeName)
               throws SQLException

Throws:

SQLException

getSqlTypes

private static Map<String,Integer> getSqlTypes(Connection db,
                                               org.postgresql.core.TypeInfo typeInfo)
                                        throws SQLException

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

Throws:

SQLException