org.apache.drill.exec.vector.accessor.reader

Class DictReaderImpl

java.lang.Object

org.apache.drill.exec.vector.accessor.reader.ArrayReaderImpl

org.apache.drill.exec.vector.accessor.reader.DictReaderImpl

All Implemented Interfaces:

ArrayReader, ColumnReader, DictReader, ReaderEvents

public class DictReaderImpl
extends ArrayReaderImpl
implements DictReader, ReaderEvents

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DictReaderImpl.DictObjectReader

Nested classes/interfaces inherited from class org.apache.drill.exec.vector.accessor.reader.ArrayReaderImpl

ArrayReaderImpl.ArrayObjectReader, ArrayReaderImpl.ElementReaderIndex

Field Summary

Fields inherited from class org.apache.drill.exec.vector.accessor.reader.ArrayReaderImpl

elementIndex, elementReader, nullStateReader

Constructor Summary

Constructors

Constructor and Description
DictReaderImpl(ColumnMetadata metadata, VectorAccessor va, AbstractTupleReader.TupleObjectReader entryObjectReader)

Method Summary

Modifier and Type	Method and Description
static DictReaderImpl.DictObjectReader	build(ColumnMetadata schema, VectorAccessor dictAccessor, List<AbstractObjectReader> readers)
String	getAsString() Return the entire object as a string.
Map<Object,Object>	getObject() Return the value of the underlying data as a Java object.
KeyAccessor	keyAccessor()
ValueType	keyColumnType()
ObjectType	valueColumnType()
ObjectReader	valueReader()

Methods inherited from class org.apache.drill.exec.vector.accessor.reader.ArrayReaderImpl

array, bindBuffer, bindIndex, bindNullState, buildList, buildRepeatedList, buildScalar, buildTuple, elementIndex, entry, entryType, isNull, next, nullStateReader, reposition, rewind, scalar, schema, setPosn, size, tuple, type, variant

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.drill.exec.vector.accessor.DictReader

size

Methods inherited from interface org.apache.drill.exec.vector.accessor.ArrayReader

array, entry, entryType, next, rewind, scalar, setPosn, tuple, variant

Methods inherited from interface org.apache.drill.exec.vector.accessor.ColumnReader

isNull, schema, type

Methods inherited from interface org.apache.drill.exec.vector.accessor.reader.ReaderEvents

bindBuffer, bindIndex, bindNullState, nullStateReader, reposition

Constructor Detail

DictReaderImpl

public DictReaderImpl(ColumnMetadata metadata,
                      VectorAccessor va,
                      AbstractTupleReader.TupleObjectReader entryObjectReader)

Method Detail

build

public static DictReaderImpl.DictObjectReader build(ColumnMetadata schema,
                                                    VectorAccessor dictAccessor,
                                                    List<AbstractObjectReader> readers)

keyAccessor

public KeyAccessor keyAccessor()

Specified by:

keyAccessor in interface DictReader

valueReader

public ObjectReader valueReader()

Specified by:

valueReader in interface DictReader

keyColumnType

public ValueType keyColumnType()

Specified by:

keyColumnType in interface DictReader

valueColumnType

public ObjectType valueColumnType()

Specified by:

valueColumnType in interface DictReader

getObject

public Map<Object,Object> getObject()

Description copied from interface: ColumnReader

Return the value of the underlying data as a Java object. Primarily for testing

• Array: Return the entire array as an List of objects. Note, even if the array is scalar, the elements are still returned as a list.

Specified by:

getObject in interface ColumnReader

Overrides:

getObject in class ArrayReaderImpl

Returns:

the value as a Java object

getAsString

public String getAsString()

Description copied from interface: ColumnReader

Return the entire object as a string. Primarily for debugging.

Specified by:

getAsString in interface ColumnReader

Overrides:

getAsString in class ArrayReaderImpl

Returns:

string representation of the object