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, bitmapIndexType, columnFormatSpec, columnName, cursorPosition, encodedValueSerializer, fieldName, fieldResourceCloser, flags, globalDictionaryIdLookup, intermediateValueWriter, localDictionary, segmentWriteOutMedium, version

Constructor Summary

Constructors

Constructor	Description
ScalarDoubleFieldColumnWriter(String columnName, String fieldName, SegmentWriteOutMedium segmentWriteOutMedium, NestedCommonFormatColumnFormatSpec columnFormatSpec, DictionaryIdLookup globalDictionaryIdLookup)

Method Summary

Modifier and Type	Method	Description
void	openColumnSerializer(SegmentWriteOutMedium medium, int maxId)

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

addValue, open, writeLongAndDoubleColumnLength, writeTo

Methods inherited from class java.lang.Object

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

Constructor Details

ScalarDoubleFieldColumnWriter

public ScalarDoubleFieldColumnWriter(String columnName,
 String fieldName,
 SegmentWriteOutMedium segmentWriteOutMedium,
 NestedCommonFormatColumnFormatSpec columnFormatSpec,
 DictionaryIdLookup globalDictionaryIdLookup)

Method Details

openColumnSerializer

public void openColumnSerializer(SegmentWriteOutMedium medium,
 int maxId)
                          throws IOException

Overrides:

openColumnSerializer in class GlobalDictionaryEncodedFieldColumnWriter<Double>

Throws:

IOException