Package org.apache.druid.frame.field

Interface Summary

Interface	Description
FieldReader	Embeds the logic to read a specific field from row-based frames or from RowKey.
FieldWriter	Helper used to write field values to row-based frames or RowKey.
NumericFieldWriterFactory	Factory for NumericFieldWriter
ReadableFieldPointer	Pointer to a field position in some memory.

Class Summary

Class	Description
ComplexFieldReader	Reads values written by ComplexFieldWriter.
ComplexFieldWriter	Wraps a BaseObjectColumnValueSelector and uses ComplexMetricSerde.toBytes(java.lang.Object) to write complex objects.
DoubleArrayFieldReader	Reader for fields written by NumericArrayFieldWriter.getDoubleArrayFieldWriter(org.apache.druid.segment.ColumnValueSelector)
DoubleFieldReader	Reads the values produced by DoubleFieldWriter
DoubleFieldWriter	Wraps a BaseDoubleColumnValueSelector and writes field values.
FieldReaders	Helper used to read field values from row-based frames or RowKey.
FieldWriters	Helper used to write field values to row-based frames or RowKey.
FloatArrayFieldReader	Reader for fields written by NumericArrayFieldWriter.getFloatArrayFieldWriter(org.apache.druid.segment.ColumnValueSelector)
FloatFieldReader	Reads values written by FloatFieldWriter.
FloatFieldWriter	Wraps a BaseFloatColumnValueSelector and writes field values.
LongArrayFieldReader	Reader for fields written by NumericArrayFieldWriter.getLongArrayFieldWriter(org.apache.druid.segment.ColumnValueSelector)
LongFieldReader	Reads values written by LongFieldWriter.
LongFieldWriter	Wraps a BaseLongColumnValueSelector and writes individual values into frame rows.
NumericArrayFieldReader	Reader class for the fields written by NumericArrayFieldWriter.
NumericArrayFieldSelector<ElementType extends Number>	Base implementation of the column value selector that the concrete numeric field reader implementations inherit from.
NumericArrayFieldWriter	Writes the values of the type ARRAY where X is a numeric type to row based frames.
NumericFieldReader	Reads the fields created by the NumericFieldWriter.
NumericFieldReader.Selector	Helper class which allows the inheritors to fetch the nullity of the field located at fieldPointer's position in the dataRegion.
NumericFieldWriter	FieldWriter for numeric datatypes.
RowMemoryFieldPointer	A ReadableFieldPointer that is derived from a row-based frame.
RowReader	Class for reading rows in the same format as used by FrameType.ROW_BASED.
SettableFieldPointer	A simple ReadableFieldPointer that returns the position and the length that was set on its object.
StringArrayFieldReader	Reads fields written by StringArrayFieldWriter
StringArrayFieldWriter	Like StringFieldWriter, but reads arrays from a ColumnValueSelector instead of reading from a DimensionSelector.
StringFieldReader	Reads fields written by StringFieldWriter or StringArrayFieldWriter.
StringFieldWriter	Wraps a DimensionSelector and writes to rframe rows.
TransformUtils	Utility methods to map the primitive numeric types into an equi-wide byte representation, such that the given byte sequence preserves the ordering of the original type when done byte comparison.