Package org.apache.druid.query.dimension

Interface ColumnSelectorStrategyFactory<ColumnSelectorStrategyClass extends ColumnSelectorStrategy>

All Known Implementing Classes:

CardinalityAggregatorColumnSelectorStrategyFactory, GroupByColumnSelectorStrategyFactory, TopNColumnAggregatesProcessorFactory

public interface ColumnSelectorStrategyFactory<ColumnSelectorStrategyClass extends ColumnSelectorStrategy>

Method Summary

Modifier and Type	Method	Description
ColumnSelectorStrategyClass	makeColumnSelectorStrategy(ColumnCapabilities capabilities, ColumnValueSelector selector, String dimension)
boolean	supportsComplexTypes()	Whether the strategy supports complex types.

Method Detail

makeColumnSelectorStrategy

ColumnSelectorStrategyClass makeColumnSelectorStrategy(ColumnCapabilities capabilities,
                                                       ColumnValueSelector selector,
                                                       String dimension)

supportsComplexTypes

boolean supportsComplexTypes()

Whether the strategy supports complex types. If a strategy doesn't support the complex types, they can either throw an unsupported exception or treat them like strings.