org.apache.flink.connector.jdbc.converter

Class AbstractJdbcRowConverter

java.lang.Object

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

All Implemented Interfaces:

Serializable, JdbcRowConverter

Direct Known Subclasses:

DerbyRowConverter, MySQLRowConverter, OracleRowConverter, PostgresRowConverter, SqlServerRowConverter

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

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	AbstractJdbcRowConverter.JdbcDeserializationConverter Runtime converter to convert JDBC field to RowData type object.
static interface	AbstractJdbcRowConverter.JdbcSerializationConverter Runtime converter to convert RowData field to java object and fill into the PreparedStatement.

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.flink.table.types.logical.LogicalType[]	fieldTypes
protected org.apache.flink.table.types.logical.RowType	rowType
protected AbstractJdbcRowConverter.JdbcSerializationConverter[]	toExternalConverters
protected AbstractJdbcRowConverter.JdbcDeserializationConverter[]	toInternalConverters

Constructor Summary

Constructors

Constructor and Description
AbstractJdbcRowConverter(org.apache.flink.table.types.logical.RowType rowType)

Method Summary

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

toInternalConverters

protected final AbstractJdbcRowConverter.JdbcDeserializationConverter[] toInternalConverters

toExternalConverters

protected final AbstractJdbcRowConverter.JdbcSerializationConverter[] toExternalConverters

fieldTypes

protected final org.apache.flink.table.types.logical.LogicalType[] fieldTypes

Constructor Detail

AbstractJdbcRowConverter

public AbstractJdbcRowConverter(org.apache.flink.table.types.logical.RowType rowType)

Method Detail

converterName

public abstract String converterName()

toInternal

public org.apache.flink.table.data.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(org.apache.flink.table.data.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 AbstractJdbcRowConverter.JdbcDeserializationConverter createNullableInternalConverter(org.apache.flink.table.types.logical.LogicalType type)

Create a nullable runtime AbstractJdbcRowConverter.JdbcDeserializationConverter from given LogicalType.

wrapIntoNullableInternalConverter

protected AbstractJdbcRowConverter.JdbcDeserializationConverter wrapIntoNullableInternalConverter(AbstractJdbcRowConverter.JdbcDeserializationConverter jdbcDeserializationConverter)

createInternalConverter

protected AbstractJdbcRowConverter.JdbcDeserializationConverter createInternalConverter(org.apache.flink.table.types.logical.LogicalType type)

createNullableExternalConverter

protected AbstractJdbcRowConverter.JdbcSerializationConverter createNullableExternalConverter(org.apache.flink.table.types.logical.LogicalType type)

Create a nullable JDBC fAbstractJdbcRowConverter.JdbcSerializationConverter from given sql type.

wrapIntoNullableExternalConverter

protected AbstractJdbcRowConverter.JdbcSerializationConverter wrapIntoNullableExternalConverter(AbstractJdbcRowConverter.JdbcSerializationConverter jdbcSerializationConverter,
                                                                                                org.apache.flink.table.types.logical.LogicalType type)

createExternalConverter

protected AbstractJdbcRowConverter.JdbcSerializationConverter createExternalConverter(org.apache.flink.table.types.logical.LogicalType type)