org.apache.drill.exec.metastore.analyze

Class MetadataIdentifierUtils

java.lang.Object

org.apache.drill.exec.metastore.analyze.MetadataIdentifierUtils

public class MetadataIdentifierUtils
extends Object

Constructor Summary

Constructors

Constructor and Description
MetadataIdentifierUtils()

Method Summary

Modifier and Type	Method and Description
static String	getFileMetadataIdentifier(List<String> partitionValues, org.apache.hadoop.fs.Path path) Returns file metadata identifier.
static String	getMetadataIdentifierKey(List<String> values) Returns string representation of metadata identifier using specified metadata identifier values.
static String	getRowGroupMetadataIdentifier(List<String> partitionValues, org.apache.hadoop.fs.Path path, int index) Returns row group metadata identifier.
static String[]	getValuesFromMetadataIdentifier(String metadataIdentifier) Returns array with metadata identifier values obtained from specified metadata identifier string.
static boolean	isMetadataKeyParent(String parent, String child) Checks whether the specified metadata identifier is a parent for another specified metadata identifier.

Methods inherited from class java.lang.Object

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

Constructor Detail

MetadataIdentifierUtils

public MetadataIdentifierUtils()

Method Detail

getMetadataIdentifierKey

public static String getMetadataIdentifierKey(List<String> values)

Returns string representation of metadata identifier using specified metadata identifier values.

Parameters:

values - metadata identifier values

Returns:

string representation of metadata identifier

isMetadataKeyParent

public static boolean isMetadataKeyParent(String parent,
                                          String child)

Checks whether the specified metadata identifier is a parent for another specified metadata identifier.

Parameters:

parent - parent metadata identifier

child - child metadata identifier

Returns:

true if specified metadata identifier is a parent for another specified metadata identifier

getFileMetadataIdentifier

public static String getFileMetadataIdentifier(List<String> partitionValues,
                                               org.apache.hadoop.fs.Path path)

Returns file metadata identifier.

Parameters:

partitionValues - partition values

path - file path

Returns:

file metadata identifier

getRowGroupMetadataIdentifier

public static String getRowGroupMetadataIdentifier(List<String> partitionValues,
                                                   org.apache.hadoop.fs.Path path,
                                                   int index)

Returns row group metadata identifier.

Parameters:

partitionValues - partition values

path - file path

index - row group index

Returns:

row group metadata identifier

getValuesFromMetadataIdentifier

public static String[] getValuesFromMetadataIdentifier(String metadataIdentifier)

Returns array with metadata identifier values obtained from specified metadata identifier string.

Parameters:

metadataIdentifier - metadata identifier

Returns:

array with metadata identifier values