org.apache.flink.cdc.connectors.db2.source.utils

Class Db2Utils

java.lang.Object

org.apache.flink.cdc.connectors.db2.source.utils.Db2Utils

public class Db2Utils
extends Object

The utils for Db2 data source.

Constructor Summary

Constructors

Constructor and Description
Db2Utils()

Method Summary

Modifier and Type	Method and Description
static String	buildSplitScanQuery(io.debezium.relational.TableId tableId, org.apache.flink.table.types.logical.RowType pkRowType, boolean isFirstSplit, boolean isLastSplit) Get split scan query for the given table.
static io.debezium.connector.db2.Db2DatabaseSchema	createDb2DatabaseSchema(io.debezium.connector.db2.Db2ConnectorConfig connectorConfig, Db2Connection connection)
static LsnOffset	currentLsn(Db2Connection connection) Fetch current largest log sequence number (LSN) of the database.
static org.apache.flink.cdc.connectors.base.source.meta.offset.Offset	getLsn(org.apache.kafka.connect.source.SourceRecord record)
static LsnOffset	getLsnPosition(Map<String,?> offset)
static io.debezium.relational.Column	getSplitColumn(io.debezium.relational.Table table, String chunkKeyColumn)
static org.apache.flink.table.types.logical.RowType	getSplitType(io.debezium.relational.Column splitColumn)
static long	queryApproximateRowCnt(io.debezium.jdbc.JdbcConnection jdbc, io.debezium.relational.TableId tableId)
static Object	queryMin(io.debezium.jdbc.JdbcConnection jdbc, io.debezium.relational.TableId tableId, String columnName, Object excludedLowerBound)
static Object[]	queryMinMax(io.debezium.jdbc.JdbcConnection jdbc, io.debezium.relational.TableId tableId, String columnName)
static Object	queryNextChunkMax(io.debezium.jdbc.JdbcConnection jdbc, io.debezium.relational.TableId tableId, String splitColumnName, int chunkSize, Object includedLowerBound) Returns the next LSN to be read from the database.
static String	quote(String dbOrTableName)
static String	quote(io.debezium.relational.TableId tableId)
static PreparedStatement	readTableSplitDataStatement(io.debezium.jdbc.JdbcConnection jdbc, String sql, boolean isFirstSplit, boolean isLastSplit, Object[] splitStart, Object[] splitEnd, int primaryKeyNum, int fetchSize) Get table split data PreparedStatement.

Methods inherited from class java.lang.Object

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

Constructor Detail

Db2Utils

public Db2Utils()

Method Detail

queryMinMax

public static Object[] queryMinMax(io.debezium.jdbc.JdbcConnection jdbc,
                                   io.debezium.relational.TableId tableId,
                                   String columnName)
                            throws SQLException

Throws:

SQLException

queryApproximateRowCnt

public static long queryApproximateRowCnt(io.debezium.jdbc.JdbcConnection jdbc,
                                          io.debezium.relational.TableId tableId)
                                   throws SQLException

Throws:

SQLException

queryMin

public static Object queryMin(io.debezium.jdbc.JdbcConnection jdbc,
                              io.debezium.relational.TableId tableId,
                              String columnName,
                              Object excludedLowerBound)
                       throws SQLException

Throws:

SQLException

queryNextChunkMax

public static Object queryNextChunkMax(io.debezium.jdbc.JdbcConnection jdbc,
                                       io.debezium.relational.TableId tableId,
                                       String splitColumnName,
                                       int chunkSize,
                                       Object includedLowerBound)
                                throws SQLException

Returns the next LSN to be read from the database. This is the LSN of the last record that was read from the database.

Throws:

SQLException

getSplitColumn

public static io.debezium.relational.Column getSplitColumn(io.debezium.relational.Table table,
                                                           @Nullable
                                                           String chunkKeyColumn)

getSplitType

public static org.apache.flink.table.types.logical.RowType getSplitType(io.debezium.relational.Column splitColumn)

getLsn

public static org.apache.flink.cdc.connectors.base.source.meta.offset.Offset getLsn(org.apache.kafka.connect.source.SourceRecord record)

getLsnPosition

public static LsnOffset getLsnPosition(Map<String,?> offset)

currentLsn

public static LsnOffset currentLsn(Db2Connection connection)

Fetch current largest log sequence number (LSN) of the database.

buildSplitScanQuery

public static String buildSplitScanQuery(io.debezium.relational.TableId tableId,
                                         org.apache.flink.table.types.logical.RowType pkRowType,
                                         boolean isFirstSplit,
                                         boolean isLastSplit)

Get split scan query for the given table.

readTableSplitDataStatement

public static PreparedStatement readTableSplitDataStatement(io.debezium.jdbc.JdbcConnection jdbc,
                                                            String sql,
                                                            boolean isFirstSplit,
                                                            boolean isLastSplit,
                                                            Object[] splitStart,
                                                            Object[] splitEnd,
                                                            int primaryKeyNum,
                                                            int fetchSize)

Get table split data PreparedStatement.

createDb2DatabaseSchema

public static io.debezium.connector.db2.Db2DatabaseSchema createDb2DatabaseSchema(io.debezium.connector.db2.Db2ConnectorConfig connectorConfig,
                                                                                  Db2Connection connection)

quote

public static String quote(String dbOrTableName)

quote

public static String quote(io.debezium.relational.TableId tableId)