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

Class Db2ChunkSplitter

java.lang.Object

org.apache.flink.cdc.connectors.db2.source.dialect.Db2ChunkSplitter

All Implemented Interfaces:

org.apache.flink.cdc.connectors.base.source.assigner.splitter.ChunkSplitter, org.apache.flink.cdc.connectors.base.source.assigner.splitter.JdbcSourceChunkSplitter

public class Db2ChunkSplitter
extends Object
implements org.apache.flink.cdc.connectors.base.source.assigner.splitter.JdbcSourceChunkSplitter

The splitter to split the table into chunks using primary-key (by default) or a given split key.

Constructor Summary

Constructors

Constructor and Description
Db2ChunkSplitter(org.apache.flink.cdc.connectors.base.config.JdbcSourceConfig sourceConfig, org.apache.flink.cdc.connectors.base.dialect.JdbcDataSourceDialect dialect)

Method Summary

Modifier and Type	Method and Description
String	buildSplitScanQuery(io.debezium.relational.TableId tableId, org.apache.flink.table.types.logical.RowType splitKeyType, boolean isFirstSplit, boolean isLastSplit)
org.apache.flink.table.types.DataType	fromDbzColumn(io.debezium.relational.Column splitColumn)
Collection<org.apache.flink.cdc.connectors.base.source.meta.split.SnapshotSplit>	generateSplits(io.debezium.relational.TableId tableId)
Long	queryApproximateRowCnt(io.debezium.jdbc.JdbcConnection jdbc, io.debezium.relational.TableId tableId)
Object	queryMin(io.debezium.jdbc.JdbcConnection jdbc, io.debezium.relational.TableId tableId, String columnName, Object excludedLowerBound)
Object[]	queryMinMax(io.debezium.jdbc.JdbcConnection jdbc, io.debezium.relational.TableId tableId, String columnName)
Object	queryNextChunkMax(io.debezium.jdbc.JdbcConnection jdbc, io.debezium.relational.TableId tableId, String columnName, int chunkSize, Object includedLowerBound)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.cdc.connectors.base.source.assigner.splitter.JdbcSourceChunkSplitter

getSplitType, isEvenlySplitColumn

Constructor Detail

Db2ChunkSplitter

public Db2ChunkSplitter(org.apache.flink.cdc.connectors.base.config.JdbcSourceConfig sourceConfig,
                        org.apache.flink.cdc.connectors.base.dialect.JdbcDataSourceDialect dialect)

Method Detail

generateSplits

public Collection<org.apache.flink.cdc.connectors.base.source.meta.split.SnapshotSplit> generateSplits(io.debezium.relational.TableId tableId)

Specified by:

generateSplits in interface org.apache.flink.cdc.connectors.base.source.assigner.splitter.ChunkSplitter

Specified by:

generateSplits in interface org.apache.flink.cdc.connectors.base.source.assigner.splitter.JdbcSourceChunkSplitter

queryMinMax

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

Specified by:

queryMinMax in interface org.apache.flink.cdc.connectors.base.source.assigner.splitter.JdbcSourceChunkSplitter

Throws:

SQLException

queryMin

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

Specified by:

queryMin in interface org.apache.flink.cdc.connectors.base.source.assigner.splitter.JdbcSourceChunkSplitter

Throws:

SQLException

fromDbzColumn

public org.apache.flink.table.types.DataType fromDbzColumn(io.debezium.relational.Column splitColumn)

Specified by:

fromDbzColumn in interface org.apache.flink.cdc.connectors.base.source.assigner.splitter.JdbcSourceChunkSplitter

queryNextChunkMax

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

Specified by:

queryNextChunkMax in interface org.apache.flink.cdc.connectors.base.source.assigner.splitter.JdbcSourceChunkSplitter

Throws:

SQLException

queryApproximateRowCnt

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

Specified by:

queryApproximateRowCnt in interface org.apache.flink.cdc.connectors.base.source.assigner.splitter.JdbcSourceChunkSplitter

Throws:

SQLException

buildSplitScanQuery

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

Specified by:

buildSplitScanQuery in interface org.apache.flink.cdc.connectors.base.source.assigner.splitter.JdbcSourceChunkSplitter