Package io.debezium.pipeline.source.snapshot.incremental

Class AbstractChunkQueryBuilder<T extends DataCollectionId>

java.lang.Object

io.debezium.pipeline.source.snapshot.incremental.AbstractChunkQueryBuilder<T>

All Implemented Interfaces:

ChunkQueryBuilder<T>

Direct Known Subclasses:

DefaultChunkQueryBuilder, RowValueConstructorChunkQueryBuilder

public abstract class AbstractChunkQueryBuilder<T extends DataCollectionId>
extends Object
implements ChunkQueryBuilder<T>

Base class for building queries for reading incremental snapshot chunks from a table.

Field Summary

Fields

Modifier and Type	Field	Description
protected Tables.ColumnNameFilter	columnFilter
protected final RelationalDatabaseConnectorConfig	connectorConfig
protected final JdbcConnection	jdbcConnection
private static final org.slf4j.Logger	LOGGER

Constructor Summary

Constructors

Constructor	Description
AbstractChunkQueryBuilder(RelationalDatabaseConnectorConfig config, JdbcConnection jdbcConnection)

Method Summary

Modifier and Type	Method	Description
protected void	addLowerBound(IncrementalSnapshotContext<T> context, Table table, Object[] boundaryKey, StringBuilder sql)
protected void	addUpperBound(IncrementalSnapshotContext<T> context, Table table, Object[] boundaryKey, StringBuilder sql)
String	buildChunkQuery(IncrementalSnapshotContext<T> context, Table table, int limit, Optional<String> additionalCondition)	Builds a query for reading the next incremental snapshot chunk from a table using the specified limit.
String	buildChunkQuery(IncrementalSnapshotContext<T> context, Table table, Optional<String> additionalCondition)	Builds a query for reading the next incremental snapshot chunk from a table using the chunk size configured by the connector.
String	buildMaxPrimaryKeyQuery(IncrementalSnapshotContext<T> context, Table table, Optional<String> additionalCondition)	Builds a query for reading the maximum primary key value from a table.
protected String	buildProjection(Table table)
private Key.KeyMapper	getKeyMapper()
List<Column>	getQueryColumns(IncrementalSnapshotContext<T> context, Table table)	Returns the columns that are used for paginating the incremental snapshot chunks.
PreparedStatement	readTableChunkStatement(IncrementalSnapshotContext<T> context, Table table, String sql)	Prepares a statement for reading the next incremental snapshot chunk from a table using the SQL statement returned by buildChunkQuery.

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

connectorConfig

protected final RelationalDatabaseConnectorConfig connectorConfig

jdbcConnection

protected final JdbcConnection jdbcConnection

columnFilter

protected Tables.ColumnNameFilter columnFilter

Constructor Details

AbstractChunkQueryBuilder

public AbstractChunkQueryBuilder(RelationalDatabaseConnectorConfig config,
 JdbcConnection jdbcConnection)

Method Details

buildChunkQuery

public String buildChunkQuery(IncrementalSnapshotContext<T> context,
 Table table,
 Optional<String> additionalCondition)

Description copied from interface: ChunkQueryBuilder

Builds a query for reading the next incremental snapshot chunk from a table using the chunk size configured by the connector.

Specified by:

buildChunkQuery in interface ChunkQueryBuilder<T extends DataCollectionId>

buildChunkQuery

public String buildChunkQuery(IncrementalSnapshotContext<T> context,
 Table table,
 int limit,
 Optional<String> additionalCondition)

Description copied from interface: ChunkQueryBuilder

Builds a query for reading the next incremental snapshot chunk from a table using the specified limit.

Specified by:

buildChunkQuery in interface ChunkQueryBuilder<T extends DataCollectionId>

buildProjection

protected String buildProjection(Table table)

addLowerBound

protected void addLowerBound(IncrementalSnapshotContext<T> context,
 Table table,
 Object[] boundaryKey,
 StringBuilder sql)

addUpperBound

protected void addUpperBound(IncrementalSnapshotContext<T> context,
 Table table,
 Object[] boundaryKey,
 StringBuilder sql)

readTableChunkStatement

public PreparedStatement readTableChunkStatement(IncrementalSnapshotContext<T> context,
 Table table,
 String sql)
                                          throws SQLException

Description copied from interface: ChunkQueryBuilder

Prepares a statement for reading the next incremental snapshot chunk from a table using the SQL statement returned by buildChunkQuery.

Specified by:

readTableChunkStatement in interface ChunkQueryBuilder<T extends DataCollectionId>

Throws:

SQLException

buildMaxPrimaryKeyQuery

public String buildMaxPrimaryKeyQuery(IncrementalSnapshotContext<T> context,
 Table table,
 Optional<String> additionalCondition)

Description copied from interface: ChunkQueryBuilder

Builds a query for reading the maximum primary key value from a table.

Specified by:

buildMaxPrimaryKeyQuery in interface ChunkQueryBuilder<T extends DataCollectionId>

getKeyMapper

private Key.KeyMapper getKeyMapper()

getQueryColumns

public List<Column> getQueryColumns(IncrementalSnapshotContext<T> context,
 Table table)

Description copied from interface: ChunkQueryBuilder

Returns the columns that are used for paginating the incremental snapshot chunks.

Specified by:

getQueryColumns in interface ChunkQueryBuilder<T extends DataCollectionId>