org.apache.parquet.format

Class Util

java.lang.Object

org.apache.parquet.format.Util

public class Util
extends Object

Utility to read/write metadata We use the TCompactProtocol to serialize metadata

Author:

Julien Le Dem

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Util.DefaultFileMetaDataConsumer Simple default consumer that sets the fields
static class	Util.FileMetaDataConsumer To read metadata in a streaming fashion.

Constructor Summary

Constructors

Constructor and Description
Util()

Method Summary

Methods

Modifier and Type	Method and Description
static FileMetaData	readFileMetaData(InputStream from)
static FileMetaData	readFileMetaData(InputStream from, boolean skipRowGroups) reads the meta data from the stream
static void	readFileMetaData(InputStream from, Util.FileMetaDataConsumer consumer)
static void	readFileMetaData(InputStream from, Util.FileMetaDataConsumer consumer, boolean skipRowGroups)
static PageHeader	readPageHeader(InputStream from)
static void	writeFileMetaData(FileMetaData fileMetadata, OutputStream to)
static void	writePageHeader(PageHeader pageHeader, OutputStream to)

Methods inherited from class java.lang.Object

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

Constructor Detail

Util

public Util()

Method Detail

writePageHeader

public static void writePageHeader(PageHeader pageHeader,
                   OutputStream to)
                            throws IOException

Throws:

IOException

readPageHeader

public static PageHeader readPageHeader(InputStream from)
                                 throws IOException

Throws:

IOException

writeFileMetaData

public static void writeFileMetaData(FileMetaData fileMetadata,
                     OutputStream to)
                              throws IOException

Throws:

IOException

readFileMetaData

public static FileMetaData readFileMetaData(InputStream from)
                                     throws IOException

Throws:

IOException

readFileMetaData

public static FileMetaData readFileMetaData(InputStream from,
                            boolean skipRowGroups)
                                     throws IOException

reads the meta data from the stream

Parameters:

from - the stream to read the metadata from

skipRowGroups - whether row groups should be skipped

Returns:

the resulting metadata

Throws:

IOException

readFileMetaData

public static void readFileMetaData(InputStream from,
                    Util.FileMetaDataConsumer consumer)
                             throws IOException

Throws:

IOException

readFileMetaData

public static void readFileMetaData(InputStream from,
                    Util.FileMetaDataConsumer consumer,
                    boolean skipRowGroups)
                             throws IOException

Throws:

IOException