Package io.debezium.connector.informix

Class InformixConnection

java.lang.Object

io.debezium.jdbc.JdbcConnection

io.debezium.connector.informix.InformixConnection

All Implemented Interfaces:

AutoCloseable

public class InformixConnection
extends io.debezium.jdbc.JdbcConnection

JdbcConnection extension to be used with IBM Informix

Author:

Laoflch Luo, Xiaolin Zhang, Lars M Johansson

Nested Class Summary

Nested classes/interfaces inherited from class io.debezium.jdbc.JdbcConnection

io.debezium.jdbc.JdbcConnection.BlockingMultiResultSetConsumer, io.debezium.jdbc.JdbcConnection.BlockingResultSetConsumer, io.debezium.jdbc.JdbcConnection.CallPreparer, io.debezium.jdbc.JdbcConnection.ConnectionFactory, io.debezium.jdbc.JdbcConnection.LogPositionValidator, io.debezium.jdbc.JdbcConnection.MultiResultSetConsumer, io.debezium.jdbc.JdbcConnection.Operations, io.debezium.jdbc.JdbcConnection.ParameterResultSetConsumer, io.debezium.jdbc.JdbcConnection.ResultSetConsumer, io.debezium.jdbc.JdbcConnection.ResultSetExtractor<T extends Object>, io.debezium.jdbc.JdbcConnection.ResultSetMapper<T extends Object>, io.debezium.jdbc.JdbcConnection.StatementFactory, io.debezium.jdbc.JdbcConnection.StatementPreparer

Field Summary

Fields

Modifier and Type	Field	Description
private static final io.debezium.jdbc.JdbcConnection.ConnectionFactory	FACTORY
private static final String	GET_CURRENT_TIMESTAMP
private static final String	GET_DATABASE_NAME
private static final String	GET_MAX_LSN
private static final String	GET_MIN_LSN
private static final org.slf4j.Logger	LOGGER
private static final String	QUOTED_CHARACTER
private final String	realDatabaseName	actual name of the database, which could differ in casing from the database name given in the connector config.
private static final String	URL_PATTERN

Fields inherited from class io.debezium.jdbc.JdbcConnection

logPositionValidator

Constructor Summary

Constructors

Constructor	Description
InformixConnection(io.debezium.jdbc.JdbcConfiguration config)	Creates a new connection using the supplied configuration.

Method Summary

Modifier and Type	Method	Description
String	connectionString()	Returns a JDBC connection string for the current configuration.
DataSource	datasource()
Optional<Instant>	getCurrentTimestamp()
Lsn	getMaxLsn()	Calculates the highest available Log Sequence Number.
private Lsn	getOldestLsn()
String	getRealDatabaseName()
io.debezium.relational.Table	getTableSchemaFromTableId(io.debezium.relational.TableId tableId)
Optional<Boolean>	nullsSortLast()
String	quotedColumnIdString(String columnName)
String	quotedTableIdString(io.debezium.relational.TableId tableId)
private String	retrieveRealDatabaseName()
boolean	validateLogPosition(io.debezium.pipeline.spi.OffsetContext offset, io.debezium.config.CommonConnectorConfig config)

Methods inherited from class io.debezium.jdbc.JdbcConnection

buildSelectWithRowLimits, call, chunkQueryBuilder, close, commit, config, connect, connection, connection, connectionString, createTableId, database, escapeEscapeSequence, execute, execute, executeWithoutCommitting, getAttributeDetails, getColumnsDetails, getColumnValue, getQualifiedTableName, isConnected, isLogPositionAvailable, isNullable, isTableType, isTableUniqueIndexIncluded, isValid, loadKeyStore, overrideColumn, parseSqlStatementString, patternBasedFactory, patternBasedFactory, prepareQuery, prepareQuery, prepareQuery, prepareQuery, prepareQuery, prepareQueryAndMap, prepareQueryWithBlockingConsumer, prepareUpdate, print, print, query, query, queryAndMap, queryAndMap, querySingleValue, queryWithBlockingConsumer, readAllCatalogNames, readAllSchemaNames, readAllTableNames, readPrimaryKeyNames, readPrimaryKeyOrUniqueIndexNames, readSchema, readTableColumn, readTableNames, readTablePreparedStatement, readTableStatement, readTableUniqueIndices, reselectColumns, reselectColumns, resolveCatalogName, resolveJdbcType, resolveNativeType, rollback, rowToArray, setAutoCommit, setQueryColumnValue, singleResultMapper, supportedTableTypes, tableTypes, username

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

GET_DATABASE_NAME

private static final String GET_DATABASE_NAME

See Also:

• Constant Field Values

GET_MAX_LSN

private static final String GET_MAX_LSN

See Also:

• Constant Field Values

GET_MIN_LSN

private static final String GET_MIN_LSN

See Also:

• Constant Field Values

GET_CURRENT_TIMESTAMP

private static final String GET_CURRENT_TIMESTAMP

See Also:

• Constant Field Values

QUOTED_CHARACTER

private static final String QUOTED_CHARACTER

See Also:

• Constant Field Values

URL_PATTERN

private static final String URL_PATTERN

FACTORY

private static final io.debezium.jdbc.JdbcConnection.ConnectionFactory FACTORY

realDatabaseName

private final String realDatabaseName

actual name of the database, which could differ in casing from the database name given in the connector config.

Constructor Details

InformixConnection

public InformixConnection(io.debezium.jdbc.JdbcConfiguration config)

Creates a new connection using the supplied configuration.

Parameters:

config - Configuration instance, may not be null.

Method Details

getMaxLsn

public Lsn getMaxLsn()
              throws SQLException

Calculates the highest available Log Sequence Number. Tecnically, the _exact_ highest available LSN is not available in the JDBC session, but the current page of the active logical log file is. Each logical log file is a 32-bit address space of 4k pages, thus the log position within the file is the current page number bit-shifted 12 positions to the left. This is also the logical log position the change stream client actually starts from if set to start from the 'CURRENT' position (LSN = 0). (The full logical sequence number is a 64-bit integer where the unique id of the logical log file is placed in the 32 most significant bits.)

Returns:

the current highest log sequence number

Throws:

SQLException

getRealDatabaseName

public String getRealDatabaseName()

retrieveRealDatabaseName

private String retrieveRealDatabaseName()

connectionString

public String connectionString()

Returns a JDBC connection string for the current configuration.

Returns:

a String where the variables in urlPattern are replaced with values from the configuration

getCurrentTimestamp

public Optional<Instant> getCurrentTimestamp()
                                      throws SQLException

Overrides:

getCurrentTimestamp in class io.debezium.jdbc.JdbcConnection

Throws:

SQLException

nullsSortLast

public Optional<Boolean> nullsSortLast()

Overrides:

nullsSortLast in class io.debezium.jdbc.JdbcConnection

quotedTableIdString

public String quotedTableIdString(io.debezium.relational.TableId tableId)

Overrides:

quotedTableIdString in class io.debezium.jdbc.JdbcConnection

quotedColumnIdString

public String quotedColumnIdString(String columnName)

Overrides:

quotedColumnIdString in class io.debezium.jdbc.JdbcConnection

getTableSchemaFromTableId

public io.debezium.relational.Table getTableSchemaFromTableId(io.debezium.relational.TableId tableId)
                                                       throws SQLException

Throws:

SQLException

datasource

public DataSource datasource()

validateLogPosition

public boolean validateLogPosition(io.debezium.pipeline.spi.OffsetContext offset,
 io.debezium.config.CommonConnectorConfig config)

getOldestLsn

private Lsn getOldestLsn()
                  throws SQLException

Throws:

SQLException