Package org.apache.shardingsphere.data.pipeline.core.importer

Class DataRecordMerger

java.lang.Object

org.apache.shardingsphere.data.pipeline.core.importer.DataRecordMerger

public final class DataRecordMerger
extends Object

Data Record merger.

Constructor Summary

Constructors

Constructor	Description
DataRecordMerger()

Method Summary

Modifier and Type	Method	Description
List<GroupedDataRecord>	group(List<DataRecord> dataRecords)	Group by table and type.
List<DataRecord>	merge(List<DataRecord> dataRecords)	Merge data record.

Methods inherited from class java.lang.Object

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

Constructor Details

DataRecordMerger

public DataRecordMerger()

Method Details

merge

public List<DataRecord> merge(List<DataRecord> dataRecords)

Merge data record.

 insert + insert -> exception
 update + insert -> exception
 delete + insert -> insert
 insert + update -> insert
 update + update -> update
 delete + update -> exception
 insert + delete -> delete
 update + delete -> delete
 delete + delete -> exception
 

Parameters:

dataRecords - data records

Returns:

merged data records

group

public List<GroupedDataRecord> group(List<DataRecord> dataRecords)

Group by table and type.

Parameters:

dataRecords - data records

Returns:

grouped data records