Package org.apache.druid.frame.field
Class DoubleFieldReader
- java.lang.Object
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- org.apache.druid.frame.field.NumericFieldReader
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- org.apache.druid.frame.field.DoubleFieldReader
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- All Implemented Interfaces:
FieldReader
public class DoubleFieldReader extends NumericFieldReader
Reads the values produced byDoubleFieldWriter
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Nested Class Summary
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Nested classes/interfaces inherited from class org.apache.druid.frame.field.NumericFieldReader
NumericFieldReader.Selector
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description static DoubleFieldReader
forArray()
static DoubleFieldReader
forPrimitive()
ColumnValueSelector<?>
getColumnValueSelector(org.apache.datasketches.memory.Memory memory, ReadableFieldPointer fieldPointer, byte nullIndicatorByte)
Creates a column value selector for the element written at fieldPointer's position in the memory.ValueType
getValueType()
ValueType
of the inheritor's element-
Methods inherited from class org.apache.druid.frame.field.NumericFieldReader
isComparable, isNull, makeColumnValueSelector, makeDimensionSelector
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Method Detail
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forPrimitive
public static DoubleFieldReader forPrimitive()
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forArray
public static DoubleFieldReader forArray()
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getValueType
public ValueType getValueType()
Description copied from class:NumericFieldReader
ValueType
of the inheritor's element- Specified by:
getValueType
in classNumericFieldReader
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getColumnValueSelector
public ColumnValueSelector<?> getColumnValueSelector(org.apache.datasketches.memory.Memory memory, ReadableFieldPointer fieldPointer, byte nullIndicatorByte)
Description copied from class:NumericFieldReader
Creates a column value selector for the element written at fieldPointer's position in the memory. The nullilty check is handled by the nullIndicatorByte- Specified by:
getColumnValueSelector
in classNumericFieldReader
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