Package org.apache.flink.formats.parquet.vector.reader

Class FixedLenBytesColumnReader<VECTOR extends org.apache.flink.table.data.columnar.vector.writable.WritableColumnVector>

java.lang.Object

org.apache.flink.formats.parquet.vector.reader.AbstractColumnReader<VECTOR>

org.apache.flink.formats.parquet.vector.reader.FixedLenBytesColumnReader<VECTOR>

All Implemented Interfaces:

ColumnReader<VECTOR>

public class FixedLenBytesColumnReader<VECTOR extends org.apache.flink.table.data.columnar.vector.writable.WritableColumnVector>
extends AbstractColumnReader<VECTOR>

Fixed length bytes ColumnReader, just for decimal.

Field Summary

Fields inherited from class org.apache.flink.formats.parquet.vector.reader.AbstractColumnReader

descriptor, dictionary, maxDefLevel, runLenDecoder

Constructor Summary

Constructors

Constructor	Description
FixedLenBytesColumnReader(org.apache.parquet.column.ColumnDescriptor descriptor, org.apache.parquet.column.page.PageReader pageReader, int precision)

Method Summary

Modifier and Type	Method	Description
protected void	readBatch(int rowId, int num, VECTOR column)	Read batch from AbstractColumnReader.runLenDecoder and AbstractColumnReader.dataInputStream.
protected void	readBatchFromDictionaryIds(int rowId, int num, VECTOR column, org.apache.flink.table.data.columnar.vector.writable.WritableIntVector dictionaryIds)	Decode dictionary ids to data.

Methods inherited from class org.apache.flink.formats.parquet.vector.reader.AbstractColumnReader

afterReadPage, checkTypeName, readToVector, supportLazyDecode

Methods inherited from class java.lang.Object

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

Constructor Detail

FixedLenBytesColumnReader

public FixedLenBytesColumnReader(org.apache.parquet.column.ColumnDescriptor descriptor,
                                 org.apache.parquet.column.page.PageReader pageReader,
                                 int precision)
                          throws IOException

Throws:

IOException

Method Detail

readBatch

protected void readBatch(int rowId,
                         int num,
                         VECTOR column)

Description copied from class: AbstractColumnReader

Read batch from AbstractColumnReader.runLenDecoder and AbstractColumnReader.dataInputStream.

Specified by:

readBatch in class AbstractColumnReader<VECTOR extends org.apache.flink.table.data.columnar.vector.writable.WritableColumnVector>

readBatchFromDictionaryIds

protected void readBatchFromDictionaryIds(int rowId,
                                          int num,
                                          VECTOR column,
                                          org.apache.flink.table.data.columnar.vector.writable.WritableIntVector dictionaryIds)

Description copied from class: AbstractColumnReader

Decode dictionary ids to data. From AbstractColumnReader.runLenDecoder and AbstractColumnReader.dictionaryIdsDecoder.

Specified by:

readBatchFromDictionaryIds in class AbstractColumnReader<VECTOR extends org.apache.flink.table.data.columnar.vector.writable.WritableColumnVector>