Uses of Class
org.apache.parquet.column.values.ValuesReader

Packages that use ValuesReader

Package	Description
org.apache.parquet.column
org.apache.parquet.column.values
org.apache.parquet.column.values.bitpacking
org.apache.parquet.column.values.bytestreamsplit
org.apache.parquet.column.values.delta
org.apache.parquet.column.values.deltalengthbytearray
org.apache.parquet.column.values.deltastrings
org.apache.parquet.column.values.dictionary
org.apache.parquet.column.values.plain
org.apache.parquet.column.values.rle

Uses of ValuesReader in org.apache.parquet.column

Methods in org.apache.parquet.column that return ValuesReader

Modifier and Type	Method and Description
ValuesReader	Encoding.getDictionaryBasedValuesReader(ColumnDescriptor descriptor, ValuesType valuesType, Dictionary dictionary) To read decoded values that require a dictionary
ValuesReader	Encoding.getValuesReader(ColumnDescriptor descriptor, ValuesType valuesType) To read decoded values that don't require a dictionary

Uses of ValuesReader in org.apache.parquet.column.values

Methods in org.apache.parquet.column.values with parameters of type ValuesReader

Modifier and Type	Method and Description
void	RequiresPreviousReader.setPreviousReader(ValuesReader reader)

Uses of ValuesReader in org.apache.parquet.column.values.bitpacking

Subclasses of ValuesReader in org.apache.parquet.column.values.bitpacking

Modifier and Type	Class and Description
class	BitPackingValuesReader a column reader that packs the ints in the number of bits required based on the maximum size.
class	ByteBitPackingValuesReader

Uses of ValuesReader in org.apache.parquet.column.values.bytestreamsplit

Subclasses of ValuesReader in org.apache.parquet.column.values.bytestreamsplit

Modifier and Type	Class and Description
class	ByteStreamSplitValuesReader
class	ByteStreamSplitValuesReaderForDouble
class	ByteStreamSplitValuesReaderForFLBA
class	ByteStreamSplitValuesReaderForFloat
class	ByteStreamSplitValuesReaderForInteger
class	ByteStreamSplitValuesReaderForLong

Uses of ValuesReader in org.apache.parquet.column.values.delta

Subclasses of ValuesReader in org.apache.parquet.column.values.delta

Modifier and Type	Class and Description
class	DeltaBinaryPackingValuesReader Read values written by DeltaBinaryPackingValuesWriter

Uses of ValuesReader in org.apache.parquet.column.values.deltalengthbytearray

Subclasses of ValuesReader in org.apache.parquet.column.values.deltalengthbytearray

Modifier and Type	Class and Description
class	DeltaLengthByteArrayValuesReader Reads binary data written by DeltaLengthByteArrayValuesWriter

Uses of ValuesReader in org.apache.parquet.column.values.deltastrings

Subclasses of ValuesReader in org.apache.parquet.column.values.deltastrings

Modifier and Type	Class and Description
class	DeltaByteArrayReader Reads binary data written by DeltaByteArrayWriter

Methods in org.apache.parquet.column.values.deltastrings with parameters of type ValuesReader

Modifier and Type	Method and Description
void	DeltaByteArrayReader.setPreviousReader(ValuesReader reader) There was a bug (PARQUET-246) in which DeltaByteArrayWriter's reset() method did not clear the previous value state that it tracks internally.

Uses of ValuesReader in org.apache.parquet.column.values.dictionary

Subclasses of ValuesReader in org.apache.parquet.column.values.dictionary

Modifier and Type	Class and Description
class	DictionaryValuesReader Reads values that have been dictionary encoded

Uses of ValuesReader in org.apache.parquet.column.values.plain

Subclasses of ValuesReader in org.apache.parquet.column.values.plain

Modifier and Type	Class and Description
class	BinaryPlainValuesReader
class	BooleanPlainValuesReader encodes boolean for the plain encoding: one bit at a time (0 = false)
class	FixedLenByteArrayPlainValuesReader ValuesReader for FIXED_LEN_BYTE_ARRAY.
class	PlainValuesReader Plain encoding for float, double, int, long
static class	PlainValuesReader.DoublePlainValuesReader
static class	PlainValuesReader.FloatPlainValuesReader
static class	PlainValuesReader.IntegerPlainValuesReader
static class	PlainValuesReader.LongPlainValuesReader

Uses of ValuesReader in org.apache.parquet.column.values.rle

Subclasses of ValuesReader in org.apache.parquet.column.values.rle

Modifier and Type	Class and Description
class	RunLengthBitPackingHybridValuesReader This ValuesReader does all the reading in RunLengthBitPackingHybridValuesReader.initFromPage(int, org.apache.parquet.bytes.ByteBufferInputStream) and stores the values in an in memory buffer, which is less than ideal.
class	ZeroIntegerValuesReader ColumnReader which does not read any actual data, but rather simply produces an endless stream of constant values.