org.apache.druid.segment.nested

Class NestedFieldLiteralColumnIndexSupplier<TStringDictionary extends Indexed<ByteBuffer>>

java.lang.Object

org.apache.druid.segment.nested.NestedFieldLiteralColumnIndexSupplier<TStringDictionary>

All Implemented Interfaces:

ColumnIndexSupplier

public class NestedFieldLiteralColumnIndexSupplier<TStringDictionary extends Indexed<ByteBuffer>>
extends Object
implements ColumnIndexSupplier

Supplies indexes for nested field columns NestedFieldLiteralDictionaryEncodedColumn of NestedDataComplexColumn.

Constructor Summary

Constructors

Constructor and Description

NestedFieldLiteralColumnIndexSupplier(NestedLiteralTypeInfo.TypeSet types, BitmapFactory bitmapFactory, GenericIndexed<ImmutableBitmap> bitmaps, com.google.common.base.Supplier<FixedIndexed<Integer>> localDictionarySupplier, com.google.common.base.Supplier<TStringDictionary> globalStringDictionarySupplier, com.google.common.base.Supplier<FixedIndexed<Long>> globalLongDictionarySupplier, com.google.common.base.Supplier<FixedIndexed<Double>> globalDoubleDictionarySupplier)

Method Summary

Modifier and Type	Method and Description
<T> T	as(Class<T> clazz) Try to get a column 'index' of the specified type.

Methods inherited from class java.lang.Object

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

Constructor Detail

NestedFieldLiteralColumnIndexSupplier

public NestedFieldLiteralColumnIndexSupplier(NestedLiteralTypeInfo.TypeSet types,
                                             BitmapFactory bitmapFactory,
                                             GenericIndexed<ImmutableBitmap> bitmaps,
                                             com.google.common.base.Supplier<FixedIndexed<Integer>> localDictionarySupplier,
                                             com.google.common.base.Supplier<TStringDictionary> globalStringDictionarySupplier,
                                             com.google.common.base.Supplier<FixedIndexed<Long>> globalLongDictionarySupplier,
                                             com.google.common.base.Supplier<FixedIndexed<Double>> globalDoubleDictionarySupplier)

Method Detail

as

@Nullable
public <T> T as(Class<T> clazz)

Description copied from interface: ColumnIndexSupplier

Try to get a column 'index' of the specified type. If the index of the desired type is not available, this method will return null. If the value is non-null, the index may be used for the eventual construction of an Offset to form the basis of a Cursor (or VectorOffset and VectorCursor) which can greatly reduce the total number of rows which need to be scanned and processed. Objects returned by this method are not thread-safe.

Specified by:

as in interface ColumnIndexSupplier