Package org.apache.hadoop.hbase.util

Class PrettyPrinter

java.lang.Object

org.apache.hadoop.hbase.util.PrettyPrinter

@Private
public final class PrettyPrinter
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	PrettyPrinter.Unit

Field Summary

Fields

Modifier and Type	Field	Description
private static final Pattern	INTERVAL_PATTERN
private static final String	INTERVAL_REGEX
private static final org.slf4j.Logger	LOG
private static final Pattern	SIZE_PATTERN
private static final String	SIZE_REGEX

Constructor Summary

Constructors

Constructor	Description
PrettyPrinter()

Method Summary

Modifier and Type	Method	Description
static String	format(String value, PrettyPrinter.Unit unit)
private static String	humanReadableByte(long size)	Convert a long size to a human readable string.
private static long	humanReadableIntervalToSec(String humanReadableInterval)	Convert a human readable time interval to seconds.
private static long	humanReadableSizeToBytes(String humanReadableSize)	Convert a human readable size to bytes.
private static String	humanReadableTTL(long interval)
static String	toString(Collection<?> collection)	Pretty prints a collection of any type to a string.
static String	valueOf(String pretty, PrettyPrinter.Unit unit)	Convert a human readable string to its value.

Methods inherited from class java.lang.Object

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

Field Details

LOG

private static final org.slf4j.Logger LOG

INTERVAL_REGEX

private static final String INTERVAL_REGEX

See Also:

• Constant Field Values

INTERVAL_PATTERN

private static final Pattern INTERVAL_PATTERN

SIZE_REGEX

private static final String SIZE_REGEX

See Also:

• Constant Field Values

SIZE_PATTERN

private static final Pattern SIZE_PATTERN

Constructor Details

PrettyPrinter

public PrettyPrinter()

Method Details

format

public static String format(String value,
 PrettyPrinter.Unit unit)

valueOf

public static String valueOf(String pretty,
 PrettyPrinter.Unit unit)
                      throws HBaseException

Convert a human readable string to its value.

Returns:

the value corresponding to the human readable string

Throws:

HBaseException

See Also:

• format(String, Unit)

humanReadableTTL

private static String humanReadableTTL(long interval)

humanReadableIntervalToSec

private static long humanReadableIntervalToSec(String humanReadableInterval)
                                        throws HBaseException

Convert a human readable time interval to seconds. Examples of the human readable time intervals are: 50 DAYS 1 HOUR 30 MINUTES , 25000 SECONDS etc. The units of time specified can be in uppercase as well as lowercase. Also, if a single number is specified without any time unit, it is assumed to be in seconds.

Returns:

value in seconds

Throws:

HBaseException

humanReadableByte

private static String humanReadableByte(long size)

Convert a long size to a human readable string. Example: 10763632640 -> 10763632640 B (10GB 25MB)

Parameters:

size - the size in bytes

Returns:

human readable string

humanReadableSizeToBytes

private static long humanReadableSizeToBytes(String humanReadableSize)
                                      throws HBaseException

Convert a human readable size to bytes. Examples of the human readable size are: 50 GB 20 MB 1 KB , 25000 B etc. The units of size specified can be in uppercase as well as lowercase. Also, if a single number is specified without any time unit, it is assumed to be in bytes.

Parameters:

humanReadableSize - human readable size

Returns:

value in bytes

Throws:

HBaseException

toString

public static String toString(Collection<?> collection)

Pretty prints a collection of any type to a string. Relies on toString() implementation of the object type.

Parameters:

collection - collection to pretty print.

Returns:

Pretty printed string for the collection.