Package io.debezium.connector.binlog.jdbc

Class BinlogFieldReader

java.lang.Object

io.debezium.connector.binlog.jdbc.BinlogFieldReader

public abstract class BinlogFieldReader
extends Object

Decodes a binlog connector's JDBC result set return value based on configured protocols.

Author:

yangjie, Chris Cranford

Field Summary

Fields

Modifier and Type	Field	Description
private final BinlogConnectorConfig	connectorConfig
private static final org.slf4j.Logger	LOGGER
private static final Set<String>	TEXT_DATA_TYPES

Constructor Summary

Constructors

Constructor	Description
BinlogFieldReader(BinlogConnectorConfig connectorConfig)

Method Summary

Modifier and Type	Method	Description
protected abstract String	getCharacterSet(Column column)	Read the column's character set.
protected boolean	hasValueConverter(Column column, TableId tableId)
protected void	logInvalidValue(ResultSet rs, int columnIndex, Object value)	Common handler for logging invalid values.
protected abstract Object	readDateField(ResultSet rs, int columnIndex, Column column, Table table)	Reads the date field based on the requirements of the concrete field reader.*
Object	readField(ResultSet rs, int columnIndex, Column column, Table table)	Read the field from the provided JDBC ResultSet.
protected abstract Object	readTimeField(ResultSet rs, int columnIndex, Column column, Table table)	Reads the time field based on the requirements of the concrete field reader.*
protected abstract Object	readTimestampField(ResultSet rs, int columnIndex, Column column, Table table)	Reads the timestamp field based on the requirements of the concrete field reader.*

Methods inherited from class java.lang.Object

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

Field Details

LOGGER

private static final org.slf4j.Logger LOGGER

TEXT_DATA_TYPES

private static final Set<String> TEXT_DATA_TYPES

connectorConfig

private final BinlogConnectorConfig connectorConfig

Constructor Details

BinlogFieldReader

public BinlogFieldReader(BinlogConnectorConfig connectorConfig)

Method Details

readField

public Object readField(ResultSet rs,
 int columnIndex,
 Column column,
 Table table)
                 throws SQLException

Read the field from the provided JDBC ResultSet.

Parameters:

rs - the result set to be read, should not be null

columnIndex - the column index or position to read

column - the relational model column being read, never null

table - the relational table being read, never null

Returns:

the field's value

Throws:

SQLException - if there is a database exception or failure reading the column's value

readTimeField

protected abstract Object readTimeField(ResultSet rs,
 int columnIndex,
 Column column,
 Table table)
                                 throws SQLException

Reads the time field based on the requirements of the concrete field reader.*

Throws:

SQLException

readDateField

protected abstract Object readDateField(ResultSet rs,
 int columnIndex,
 Column column,
 Table table)
                                 throws SQLException

Reads the date field based on the requirements of the concrete field reader.*

Throws:

SQLException

readTimestampField

protected abstract Object readTimestampField(ResultSet rs,
 int columnIndex,
 Column column,
 Table table)
                                      throws SQLException

Reads the timestamp field based on the requirements of the concrete field reader.*

Throws:

SQLException

getCharacterSet

protected abstract String getCharacterSet(Column column)
                                   throws UnsupportedEncodingException

Read the column's character set.

Throws:

UnsupportedEncodingException

logInvalidValue

protected void logInvalidValue(ResultSet rs,
 int columnIndex,
 Object value)
                        throws SQLException

Common handler for logging invalid values.

Parameters:

rs - the result set, should not be null

columnIndex - the column index or position read

value - the value that was read

Throws:

SQLException - if there is a database exception trying to get column metadata information

hasValueConverter

protected boolean hasValueConverter(Column column,
 TableId tableId)