Package org.apache.parquet.filter2.compat

Class RowGroupFilter

java.lang.Object

org.apache.parquet.filter2.compat.RowGroupFilter

All Implemented Interfaces:

FilterCompat.Visitor<List<BlockMetaData>>

public class RowGroupFilter
extends Object
implements FilterCompat.Visitor<List<BlockMetaData>>

Given a FilterCompat.Filter applies it to a list of BlockMetaData (row groups) If the Filter is an UnboundRecordFilter or the no op filter, no filtering will be performed.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	RowGroupFilter.FilterLevel

Method Summary

Modifier and Type	Method	Description
static List<BlockMetaData>	filterRowGroups(List<RowGroupFilter.FilterLevel> levels, FilterCompat.Filter filter, List<BlockMetaData> blocks, ParquetFileReader reader)
static List<BlockMetaData>	filterRowGroups(FilterCompat.Filter filter, List<BlockMetaData> blocks, MessageType schema)	Deprecated. will be removed in 2.0.0.
List<BlockMetaData>	visit(FilterCompat.FilterPredicateCompat filterPredicateCompat)
List<BlockMetaData>	visit(FilterCompat.NoOpFilter noOpFilter)
List<BlockMetaData>	visit(FilterCompat.UnboundRecordFilterCompat unboundRecordFilterCompat)

Methods inherited from class java.lang.Object

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

Method Detail

filterRowGroups

@Deprecated
public static List<BlockMetaData> filterRowGroups(FilterCompat.Filter filter,
                                                  List<BlockMetaData> blocks,
                                                  MessageType schema)

Deprecated.

will be removed in 2.0.0.

Parameters:

filter - a filter

blocks - a list of block metadata to filter

schema - the file schema

Returns:

a filtered list of block metadata

filterRowGroups

public static List<BlockMetaData> filterRowGroups(List<RowGroupFilter.FilterLevel> levels,
                                                  FilterCompat.Filter filter,
                                                  List<BlockMetaData> blocks,
                                                  ParquetFileReader reader)

visit

public List<BlockMetaData> visit(FilterCompat.FilterPredicateCompat filterPredicateCompat)

Specified by:

visit in interface FilterCompat.Visitor<List<BlockMetaData>>

visit

public List<BlockMetaData> visit(FilterCompat.UnboundRecordFilterCompat unboundRecordFilterCompat)

Specified by:

visit in interface FilterCompat.Visitor<List<BlockMetaData>>

visit

public List<BlockMetaData> visit(FilterCompat.NoOpFilter noOpFilter)

Specified by:

visit in interface FilterCompat.Visitor<List<BlockMetaData>>