Package io.trino.parquet.predicate

Interface Predicate

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      boolean matches​(long numberOfRows, Map<org.apache.parquet.column.ColumnDescriptor,​org.apache.parquet.column.statistics.Statistics<?>> statistics, ParquetDataSourceId id)
      Should the Parquet Reader process a file section with the specified statistics.
      boolean matches​(long numberOfRows, org.apache.parquet.internal.filter2.columnindex.ColumnIndexStore columnIndex, ParquetDataSourceId id)
      Should the Parquet Reader process a file section with the specified statistics.
      boolean matches​(DictionaryDescriptor dictionary)
      Should the Parquet Reader process a file section with the specified dictionary based on that single dictionary.
      Optional<org.apache.parquet.filter2.predicate.FilterPredicate> toParquetFilter​(org.joda.time.DateTimeZone timeZone)
      Convert Predicate to Parquet filter if possible.

    • Method Detail

      • matches

        boolean matches​(long numberOfRows,
                Map<org.apache.parquet.column.ColumnDescriptor,​org.apache.parquet.column.statistics.Statistics<?>> statistics,
                ParquetDataSourceId id)
         throws ParquetCorruptionException
        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
        Throws:
        ParquetCorruptionException

      • 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,
                org.apache.parquet.internal.filter2.columnindex.ColumnIndexStore columnIndex,
                ParquetDataSourceId id)
         throws ParquetCorruptionException
        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
        columnIndex - column index (statistics) store
        id - Parquet file name
        Throws:
        ParquetCorruptionException

      • toParquetFilter

        Optional<org.apache.parquet.filter2.predicate.FilterPredicate> toParquetFilter​(org.joda.time.DateTimeZone timeZone)
        Convert Predicate to Parquet filter if possible.
        Parameters:
        timeZone - current Parquet timezone
        Returns:
        Converted Parquet filter or null if conversion not possible