com.facebook.presto.parquet.predicate

Interface Predicate

All Known Implementing Classes:

TupleDomainParquetPredicate

public interface Predicate

Field Summary

Fields

Modifier and Type	Field and Description
static Predicate	TRUE

Method Summary

Modifier and Type	Method and Description
boolean	matches(DictionaryDescriptor dictionary) Should the Parquet Reader process a file section with the specified dictionary based on that single dictionary.
boolean	matches(long numberOfRows, Map<org.apache.parquet.column.ColumnDescriptor,org.apache.parquet.column.statistics.Statistics<?>> statistics, ParquetDataSourceId id, Optional<WarningCollector> warningCollector) Should the Parquet Reader process a file section with the specified statistics.
boolean	matches(long numberOfRows, Optional<org.apache.parquet.internal.filter2.columnindex.ColumnIndexStore> columnIndexStore) Should the Parquet Reader process a file section with the specified statistics.

Field Detail

TRUE

static final Predicate TRUE

Method Detail

matches

boolean matches(long numberOfRows,
                Map<org.apache.parquet.column.ColumnDescriptor,org.apache.parquet.column.statistics.Statistics<?>> statistics,
                ParquetDataSourceId id,
                Optional<WarningCollector> warningCollector)

Should the Parquet Reader process a file section with the specified statistics.

Parameters:

numberOfRows - the number of rows in the segment; this can be used with Statistics to determine if a column is only null

statistics - column statistics

id - Parquet file name

warningCollector - Presto WarningCollector that is used to collect warnings when the statistics is corrupt

matches

boolean matches(DictionaryDescriptor dictionary)

Should the Parquet Reader process a file section with the specified dictionary based on that single dictionary. This is safe to check repeatedly to avoid loading more parquet dictionaries if the section can already be eliminated.

Parameters:

dictionary - The single column dictionary

matches

boolean matches(long numberOfRows,
                Optional<org.apache.parquet.internal.filter2.columnindex.ColumnIndexStore> columnIndexStore)

Should the Parquet Reader process a file section with the specified statistics.

Parameters:

numberOfRows - the number of rows in the segment; this can be used with Statistics to determine if a column is only null

columnIndexStore - column index (statistics) store