Package org.apache.iceberg.deletes

Class Deletes

java.lang.Object

org.apache.iceberg.deletes.Deletes

public class Deletes
extends Object

Method Summary

Modifier and Type	Method	Description
static <T extends StructLike> CloseableIterable<Long>	deletePositions(CharSequence dataLocation, List<CloseableIterable<T>> deleteFiles)
static CloseableIterable<Long>	deletePositions(CharSequence dataLocation, CloseableIterable<StructLike> deleteFile)
static <T> CloseableIterable<T>	filter(CloseableIterable<T> rows, Function<T,StructLike> rowToDeleteKey, StructLikeSet deleteSet)
static <T> CloseableIterable<T>	filterDeleted(CloseableIterable<T> rows, Predicate<T> isDeleted, DeleteCounter counter)	Returns the remaining rows (the ones that are not deleted), while counting the deleted ones.
static <T> CloseableIterable<T>	markDeleted(CloseableIterable<T> rows, Predicate<T> isDeleted, Consumer<T> deleteMarker)	Returns the same rows that are input, while marking the deleted ones.
static StructLikeSet	toEqualitySet(CloseableIterable<StructLike> eqDeletes, Types.StructType eqType)
static <T extends StructLike> PositionDeleteIndex	toPositionIndex(CharSequence dataLocation, CloseableIterable<T> posDeletes, DeleteFile file)
static PositionDeleteIndex	toPositionIndex(CloseableIterable<Long> posDeletes)
static <T extends StructLike> CharSequenceMap<PositionDeleteIndex>	toPositionIndexes(CloseableIterable<T> posDeletes)
static <T extends StructLike> CharSequenceMap<PositionDeleteIndex>	toPositionIndexes(CloseableIterable<T> posDeletes, DeleteFile file)	Builds a map of position delete indexes by path.

Methods inherited from class java.lang.Object

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

Method Details

filter

public static <T> CloseableIterable<T> filter(CloseableIterable<T> rows,
 Function<T,StructLike> rowToDeleteKey,
 StructLikeSet deleteSet)

markDeleted

public static <T> CloseableIterable<T> markDeleted(CloseableIterable<T> rows,
 Predicate<T> isDeleted,
 Consumer<T> deleteMarker)

Returns the same rows that are input, while marking the deleted ones.

Parameters:

rows - the rows to process

isDeleted - a predicate that determines if a row is deleted

deleteMarker - a function that marks a row as deleted

Returns:

the processed rows

filterDeleted

public static <T> CloseableIterable<T> filterDeleted(CloseableIterable<T> rows,
 Predicate<T> isDeleted,
 DeleteCounter counter)

Returns the remaining rows (the ones that are not deleted), while counting the deleted ones.

Parameters:

rows - the rows to process

isDeleted - a predicate that determines if a row is deleted

counter - a counter that counts deleted rows

Returns:

the processed rows

toEqualitySet

public static StructLikeSet toEqualitySet(CloseableIterable<StructLike> eqDeletes,
 Types.StructType eqType)

toPositionIndexes

public static <T extends StructLike>
CharSequenceMap<PositionDeleteIndex> toPositionIndexes(CloseableIterable<T> posDeletes)

toPositionIndexes

public static <T extends StructLike>
CharSequenceMap<PositionDeleteIndex> toPositionIndexes(CloseableIterable<T> posDeletes,
 DeleteFile file)

Builds a map of position delete indexes by path.

This method builds a position delete index for each referenced data file and does not filter deletes. This can be useful when the entire delete file content is needed (e.g. caching).

Parameters:

posDeletes - position deletes

file - the source delete file for the deletes

Returns:

the map of position delete indexes by path

toPositionIndex

public static <T extends StructLike>
PositionDeleteIndex toPositionIndex(CharSequence dataLocation,
 CloseableIterable<T> posDeletes,
 DeleteFile file)

toPositionIndex

public static PositionDeleteIndex toPositionIndex(CloseableIterable<Long> posDeletes)

deletePositions

public static CloseableIterable<Long> deletePositions(CharSequence dataLocation,
 CloseableIterable<StructLike> deleteFile)

deletePositions

public static <T extends StructLike>
CloseableIterable<Long> deletePositions(CharSequence dataLocation,
 List<CloseableIterable<T>> deleteFiles)