com.facebook.presto.parquet.cache

Class MetadataReader

java.lang.Object

com.facebook.presto.parquet.cache.MetadataReader

All Implemented Interfaces:

ParquetMetadataSource

public final class MetadataReader
extends Object
implements ParquetMetadataSource

Constructor Summary

Constructors

Constructor and Description
MetadataReader()

Method Summary

Modifier and Type	Method and Description
static org.apache.parquet.hadoop.metadata.ColumnChunkMetaData	buildColumnChunkMetaData(org.apache.parquet.format.ColumnMetaData metaData, org.apache.parquet.hadoop.metadata.ColumnPath columnPath, org.apache.parquet.schema.PrimitiveType type)
static Optional<Integer>	findFirstNonHiddenColumnId(org.apache.parquet.hadoop.metadata.BlockMetaData block)
ParquetFileMetadata	getParquetMetadata(ParquetDataSource parquetDataSource, long fileSize, boolean cacheable, long modificationTime, Optional<org.apache.parquet.crypto.InternalFileDecryptor> fileDecryptor)
static ParquetFileMetadata	readFooter(ParquetDataSource parquetDataSource, long fileSize, long modificationTime, Optional<org.apache.parquet.crypto.InternalFileDecryptor> fileDecryptor)
static ParquetFileMetadata	readFooter(ParquetDataSource parquetDataSource, long fileSize, Optional<org.apache.parquet.crypto.InternalFileDecryptor> fileDecryptor)
static org.apache.parquet.column.statistics.Statistics<?>	readStats(org.apache.parquet.format.Statistics statistics, org.apache.parquet.schema.PrimitiveType.PrimitiveTypeName type)

Methods inherited from class java.lang.Object

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

Constructor Detail

MetadataReader

public MetadataReader()

Method Detail

readFooter

public static ParquetFileMetadata readFooter(ParquetDataSource parquetDataSource,
                                             long fileSize,
                                             Optional<org.apache.parquet.crypto.InternalFileDecryptor> fileDecryptor)
                                      throws IOException

Throws:

IOException

readFooter

public static ParquetFileMetadata readFooter(ParquetDataSource parquetDataSource,
                                             long fileSize,
                                             long modificationTime,
                                             Optional<org.apache.parquet.crypto.InternalFileDecryptor> fileDecryptor)
                                      throws IOException

Throws:

IOException

buildColumnChunkMetaData

public static org.apache.parquet.hadoop.metadata.ColumnChunkMetaData buildColumnChunkMetaData(org.apache.parquet.format.ColumnMetaData metaData,
                                                                                              org.apache.parquet.hadoop.metadata.ColumnPath columnPath,
                                                                                              org.apache.parquet.schema.PrimitiveType type)

readStats

public static org.apache.parquet.column.statistics.Statistics<?> readStats(org.apache.parquet.format.Statistics statistics,
                                                                           org.apache.parquet.schema.PrimitiveType.PrimitiveTypeName type)

getParquetMetadata

public ParquetFileMetadata getParquetMetadata(ParquetDataSource parquetDataSource,
                                              long fileSize,
                                              boolean cacheable,
                                              long modificationTime,
                                              Optional<org.apache.parquet.crypto.InternalFileDecryptor> fileDecryptor)
                                       throws IOException

Specified by:

getParquetMetadata in interface ParquetMetadataSource

Throws:

IOException

findFirstNonHiddenColumnId

public static Optional<Integer> findFirstNonHiddenColumnId(org.apache.parquet.hadoop.metadata.BlockMetaData block)