org.apache.iceberg.parquet

Class ParquetDictionaryRowGroupFilter

java.lang.Object

org.apache.iceberg.parquet.ParquetDictionaryRowGroupFilter

public class ParquetDictionaryRowGroupFilter
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
ParquetDictionaryRowGroupFilter(org.apache.iceberg.Schema schema, org.apache.iceberg.expressions.Expression unbound)
ParquetDictionaryRowGroupFilter(org.apache.iceberg.Schema schema, org.apache.iceberg.expressions.Expression unbound, boolean caseSensitive)

Method Summary

Modifier and Type	Method and Description
boolean	shouldRead(org.apache.parquet.schema.MessageType fileSchema, org.apache.parquet.hadoop.metadata.BlockMetaData rowGroup, org.apache.parquet.column.page.DictionaryPageReadStore dictionaries) Test whether the dictionaries for a row group may contain records that match the expression.

Methods inherited from class java.lang.Object

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

Constructor Detail

ParquetDictionaryRowGroupFilter

public ParquetDictionaryRowGroupFilter(org.apache.iceberg.Schema schema,
                                       org.apache.iceberg.expressions.Expression unbound)

ParquetDictionaryRowGroupFilter

public ParquetDictionaryRowGroupFilter(org.apache.iceberg.Schema schema,
                                       org.apache.iceberg.expressions.Expression unbound,
                                       boolean caseSensitive)

Method Detail

shouldRead

public boolean shouldRead(org.apache.parquet.schema.MessageType fileSchema,
                          org.apache.parquet.hadoop.metadata.BlockMetaData rowGroup,
                          org.apache.parquet.column.page.DictionaryPageReadStore dictionaries)

Test whether the dictionaries for a row group may contain records that match the expression.

Parameters:

fileSchema - schema for the Parquet file

dictionaries - a dictionary page read store

Returns:

false if the file cannot contain rows that match the expression, true otherwise.