com.facebook.presto.hive.parquet.reader

Class ParquetReader

java.lang.Object

com.facebook.presto.hive.parquet.reader.ParquetReader

All Implemented Interfaces:

Closeable, AutoCloseable

public class ParquetReader
extends Object
implements Closeable

Constructor Summary

Constructors

Constructor and Description
ParquetReader(parquet.schema.MessageType fileSchema, parquet.schema.MessageType requestedSchema, List<parquet.hadoop.metadata.BlockMetaData> blocks, ParquetDataSource dataSource, TypeManager typeManager, AggregatedMemoryContext systemMemoryContext)

Method Summary

Modifier and Type	Method and Description
void	close()
long	getPosition()
int	nextBatch()
Block	readArray(Type type, List<String> path)
Block	readMap(Type type, List<String> path)
Block	readPrimitive(parquet.column.ColumnDescriptor columnDescriptor, Type type)
Block	readStruct(Type type, List<String> path)

Methods inherited from class java.lang.Object

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

Constructor Detail

ParquetReader

public ParquetReader(parquet.schema.MessageType fileSchema,
                     parquet.schema.MessageType requestedSchema,
                     List<parquet.hadoop.metadata.BlockMetaData> blocks,
                     ParquetDataSource dataSource,
                     TypeManager typeManager,
                     AggregatedMemoryContext systemMemoryContext)

Method Detail

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException

getPosition

public long getPosition()

nextBatch

public int nextBatch()

readArray

public Block readArray(Type type,
                       List<String> path)
                throws IOException

Throws:

IOException

readMap

public Block readMap(Type type,
                     List<String> path)
              throws IOException

Throws:

IOException

readStruct

public Block readStruct(Type type,
                        List<String> path)
                 throws IOException

Throws:

IOException

readPrimitive

public Block readPrimitive(parquet.column.ColumnDescriptor columnDescriptor,
                           Type type)
                    throws IOException

Throws:

IOException