Package org.apache.druid.segment.nested

Class ScalarDoubleFieldColumnWriter

java.lang.Object

org.apache.druid.segment.nested.GlobalDictionaryEncodedFieldColumnWriter<Double>

org.apache.druid.segment.nested.ScalarDoubleFieldColumnWriter

public final class ScalarDoubleFieldColumnWriter
extends GlobalDictionaryEncodedFieldColumnWriter<Double>

Nested field writer for double type columns of NestedDataColumnSerializer. In addition to the normal dictionary encoded column, this writer also writes an additional double value column with doublesSerializer, which is written to during GlobalDictionaryEncodedFieldColumnWriter.addValue(int, java.lang.Object).

Field Summary

Fields inherited from class org.apache.druid.segment.nested.GlobalDictionaryEncodedFieldColumnWriter

arrayElements, columnName, cursorPosition, encodedValueSerializer, fieldName, flags, globalDictionaryIdLookup, indexSpec, intermediateValueWriter, localDictionary, segmentWriteOutMedium, version

Constructor Summary

Constructors

Constructor	Description
ScalarDoubleFieldColumnWriter(String columnName, String fieldName, SegmentWriteOutMedium segmentWriteOutMedium, IndexSpec indexSpec, DictionaryIdLookup globalDictionaryIdLookup)

Method Summary

Modifier and Type	Method	Description
void	open()	Open the writer so that GlobalDictionaryEncodedFieldColumnWriter.addValue(int, Object) can be called

Methods inherited from class org.apache.druid.segment.nested.GlobalDictionaryEncodedFieldColumnWriter

addValue, writeLongAndDoubleColumnLength, writeTo

Methods inherited from class java.lang.Object

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

Constructor Detail

ScalarDoubleFieldColumnWriter

public ScalarDoubleFieldColumnWriter(String columnName,
                                     String fieldName,
                                     SegmentWriteOutMedium segmentWriteOutMedium,
                                     IndexSpec indexSpec,
                                     DictionaryIdLookup globalDictionaryIdLookup)

Method Detail

open

public void open()
          throws IOException

Description copied from class: GlobalDictionaryEncodedFieldColumnWriter

Open the writer so that GlobalDictionaryEncodedFieldColumnWriter.addValue(int, Object) can be called

Overrides:

open in class GlobalDictionaryEncodedFieldColumnWriter<Double>

Throws:

IOException