org.apache.druid.segment.serde

Class DictionaryEncodedStringIndexSupplier

java.lang.Object

org.apache.druid.segment.serde.DictionaryEncodedStringIndexSupplier

All Implemented Interfaces:

ColumnIndexSupplier

public class DictionaryEncodedStringIndexSupplier
extends Object
implements ColumnIndexSupplier

Constructor Summary

Constructors

Constructor and Description
DictionaryEncodedStringIndexSupplier(BitmapFactory bitmapFactory, GenericIndexed<String> dictionary, GenericIndexed<ByteBuffer> dictionaryUtf8, GenericIndexed<ImmutableBitmap> bitmaps, ImmutableRTree indexedTree)

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

DictionaryEncodedStringIndexSupplier

public DictionaryEncodedStringIndexSupplier(BitmapFactory bitmapFactory,
                                            GenericIndexed<String> dictionary,
                                            GenericIndexed<ByteBuffer> dictionaryUtf8,
                                            @Nullable
                                            GenericIndexed<ImmutableBitmap> bitmaps,
                                            @Nullable
                                            ImmutableRTree indexedTree)

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