org.apache.flink.connector.jdbc.internal.converter

Class AbstractJdbcRowConverter

java.lang.Object

org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter

All Implemented Interfaces:

Serializable, JdbcRowConverter

Direct Known Subclasses:

DerbyRowConverter, MySQLRowConverter, PostgresRowConverter

public abstract class AbstractJdbcRowConverter
extends Object
implements JdbcRowConverter

Base class for all converters that convert between JDBC object and Flink internal object.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected LogicalType[]	fieldTypes
protected RowType	rowType
protected org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcSerializationConverter[]	toExternalConverters
protected org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcDeserializationConverter[]	toInternalConverters

Constructor Summary

Constructors

Constructor and Description
AbstractJdbcRowConverter(RowType rowType)

Method Summary

Modifier and Type	Method and Description
abstract String	converterName()
protected org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcSerializationConverter	createExternalConverter(LogicalType type)
protected org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcDeserializationConverter	createInternalConverter(LogicalType type)
protected org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcSerializationConverter	createNullableExternalConverter(LogicalType type) Create a nullable JDBC fJdbcSerializationConverter from given sql type.
protected org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcDeserializationConverter	createNullableInternalConverter(LogicalType type) Create a nullable runtime JdbcDeserializationConverter from given LogicalType.
FieldNamedPreparedStatement	toExternal(RowData rowData, FieldNamedPreparedStatement statement) Convert data retrieved from Flink internal RowData to JDBC Object.
RowData	toInternal(ResultSet resultSet) Convert data retrieved from ResultSet to internal RowData.
protected org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcSerializationConverter	wrapIntoNullableExternalConverter(org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcSerializationConverter jdbcSerializationConverter, LogicalType type)
protected org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcDeserializationConverter	wrapIntoNullableInternalConverter(org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcDeserializationConverter jdbcDeserializationConverter)

Methods inherited from class java.lang.Object

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

Field Detail

rowType

protected final RowType rowType

toInternalConverters

protected final org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcDeserializationConverter[] toInternalConverters

toExternalConverters

protected final org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcSerializationConverter[] toExternalConverters

fieldTypes

protected final LogicalType[] fieldTypes

Constructor Detail

AbstractJdbcRowConverter

public AbstractJdbcRowConverter(RowType rowType)

Method Detail

converterName

public abstract String converterName()

toInternal

public RowData toInternal(ResultSet resultSet)
                   throws SQLException

Description copied from interface: JdbcRowConverter

Convert data retrieved from ResultSet to internal RowData.

Specified by:

toInternal in interface JdbcRowConverter

Parameters:

resultSet - ResultSet from JDBC

Throws:

SQLException

toExternal

public FieldNamedPreparedStatement toExternal(RowData rowData,
                                              FieldNamedPreparedStatement statement)
                                       throws SQLException

Description copied from interface: JdbcRowConverter

Convert data retrieved from Flink internal RowData to JDBC Object.

Specified by:

toExternal in interface JdbcRowConverter

Parameters:

rowData - The given internal RowData.

statement - The statement to be filled.

Returns:

The filled statement.

Throws:

SQLException

createNullableInternalConverter

protected org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcDeserializationConverter createNullableInternalConverter(LogicalType type)

Create a nullable runtime JdbcDeserializationConverter from given LogicalType.

wrapIntoNullableInternalConverter

protected org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcDeserializationConverter wrapIntoNullableInternalConverter(org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcDeserializationConverter jdbcDeserializationConverter)

createInternalConverter

protected org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcDeserializationConverter createInternalConverter(LogicalType type)

createNullableExternalConverter

protected org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcSerializationConverter createNullableExternalConverter(LogicalType type)

Create a nullable JDBC fJdbcSerializationConverter from given sql type.

wrapIntoNullableExternalConverter

protected org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcSerializationConverter wrapIntoNullableExternalConverter(org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcSerializationConverter jdbcSerializationConverter,
                                                                                                                                                   LogicalType type)

createExternalConverter

protected org.apache.flink.connector.jdbc.internal.converter.AbstractJdbcRowConverter.JdbcSerializationConverter createExternalConverter(LogicalType type)