com.netflix.iceberg

Class FilteredManifest

java.lang.Object

com.netflix.iceberg.FilteredManifest

All Implemented Interfaces:

Filterable<FilteredManifest>, java.lang.Iterable<DataFile>

public class FilteredManifest
extends java.lang.Object
implements Filterable<FilteredManifest>

Field Summary

Fields inherited from interface com.netflix.iceberg.Filterable

ALL_COLUMNS

Method Summary

Modifier and Type	Method and Description
FilteredManifest	filterPartitions(Expression expr) Adds a filter expression on partition data for matching files.
FilteredManifest	filterRows(Expression expr) Adds a filter expression on data rows for matching files.
java.util.Iterator<DataFile>	iterator()
FilteredManifest	select(java.util.Collection<java.lang.String> columns) Selects the columns of a file manifest to read.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.netflix.iceberg.Filterable

select

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Method Detail

select

public FilteredManifest select(java.util.Collection<java.lang.String> columns)

Description copied from interface: Filterable

Selects the columns of a file manifest to read.

If columns are set multiple times, the last set of columns will be read.

If the Filterable object has partition filters, they will be added to the returned partial.

For a list of column names, see the table format specification.

Specified by:

select in interface Filterable<FilteredManifest>

Parameters:

columns - String column names to load from the manifest file

Returns:

a Filterable that will load only the given columns

filterPartitions

public FilteredManifest filterPartitions(Expression expr)

Description copied from interface: Filterable

Adds a filter expression on partition data for matching files.

If the Filterable object already has partition filters, the new filter will be added as an additional requirement. The result filter expression will be the result of expr and any existing filters.

If the Filterable object has columns selected, they will be added to the returned partial.

Specified by:

filterPartitions in interface Filterable<FilteredManifest>

Parameters:

expr - An expression for filtering this Filterable using partition data

Returns:

a Filterable that will load only rows that match expr

filterRows

public FilteredManifest filterRows(Expression expr)

Description copied from interface: Filterable

Adds a filter expression on data rows for matching files.

Expressions passed to this function will be converted to partition expressions before they are used to filter data files.

If the Filterable object already has partition filters, the new filter will be added as an additional requirement. The result filter expression will be the result of expr and any existing filters.

If the Filterable object has columns selected, they will be added to the returned partial.

Specified by:

filterRows in interface Filterable<FilteredManifest>

Parameters:

expr - An expression for filtering this Filterable using row data

Returns:

a Filterable that will load only rows that match expr

iterator

public java.util.Iterator<DataFile> iterator()

Specified by:

iterator in interface java.lang.Iterable<DataFile>