io.druid.segment

Interface DimensionMergerV9<EncodedKeyComponentType>

All Superinterfaces:

DimensionMerger<EncodedKeyComponentType>

All Known Subinterfaces:

DimensionMergerLegacy<EncodedKeyComponentType>

All Known Implementing Classes:

FloatDimensionMergerLegacy, FloatDimensionMergerV9, LongDimensionMergerLegacy, LongDimensionMergerV9, StringDimensionMergerLegacy, StringDimensionMergerV9

public interface DimensionMergerV9<EncodedKeyComponentType>
extends DimensionMerger<EncodedKeyComponentType>

Processing related interface DimensionMerger subclass to be used with IndexMergerV9.

Method Summary

Modifier and Type	Method and Description
ColumnDescriptor	makeColumnDescriptor() Return a ColumnDescriptor containing ColumnPartSerde objects appropriate for this DimensionMerger's value metadata, sequence of row values, and index structures.

Methods inherited from interface io.druid.segment.DimensionMerger

canSkip, convertSegmentRowValuesToMergedRowValues, processMergedRow, writeIndexes, writeMergedValueMetadata

Method Detail

makeColumnDescriptor

ColumnDescriptor makeColumnDescriptor()
                               throws IOException

Return a ColumnDescriptor containing ColumnPartSerde objects appropriate for this DimensionMerger's value metadata, sequence of row values, and index structures.

Returns:

ColumnDescriptor that IndexMergerV9 will use to build a column.

Throws:

IOException