Package org.apache.druid.segment.vector

Interface VectorObjectSelector

All Superinterfaces:

VectorSizeInspector

All Known Implementing Classes:

ExpressionVectorMultiValueStringObjectSelector, ExpressionVectorObjectSelector, NestedFieldVirtualColumn.RawFieldVectorObjectSelector, NilVectorSelector, StringUtf8DictionaryEncodedColumn.MultiValueStringVectorObjectSelector, StringUtf8DictionaryEncodedColumn.StringVectorObjectSelector, VariantColumn.VariantVectorObjectSelector

public interface VectorObjectSelector
extends VectorSizeInspector

Vectorized object selector. Typically created by VectorColumnSelectorFactory.makeObjectSelector(String).

Method Summary

Modifier and Type	Method	Description
Object[]	getObjectVector()	Get the current vector.

Methods inherited from interface org.apache.druid.segment.vector.VectorSizeInspector

getCurrentVectorSize, getMaxVectorSize

Method Details

getObjectVector

Object[] getObjectVector()

Get the current vector. The type of objects in the array depends on the type of the selector. Callers can determine this by calling VectorColumnSelectorFactory.getColumnCapabilities(String) if creating selectors directly. Alternatively, callers using VectorColumnProcessorFactory will receive capabilities as part of the callback to VectorColumnProcessorFactory.makeObjectProcessor(ColumnCapabilities, VectorObjectSelector). String selectors, where type is ColumnType.STRING, must use objects compatible with the spec of DimensionSelector.rowToObject(IndexedInts, DimensionDictionarySelector). Array selectors, where TypeSignature.isArray(), must use Object[]. The array may contain null elements, and the array itself may also be null. Complex selectors may use any type of object. No other type of selector is possible. Vector object selectors are only used for strings, arrays, and complex types.