org.apache.hadoop.yarn.util
Class StringHelper

java.lang.Object
  org.apache.hadoop.yarn.util.StringHelper

public final class StringHelper
extends Object

Common string manipulation helpers

Field Summary

static com.google.common.base.Joiner	_JOINER
static com.google.common.base.Splitter	_SPLITTER
static com.google.common.base.Joiner	CSV_JOINER
static com.google.common.base.Joiner	DOT_JOINER
static com.google.common.base.Joiner	JOINER
static com.google.common.base.Joiner	PATH_ARG_JOINER
static com.google.common.base.Joiner	PATH_JOINER
static com.google.common.base.Joiner	SSV_JOINER
static com.google.common.base.Splitter	SSV_SPLITTER

Constructor Summary

StringHelper()

Method Summary

static String	_join(Object... args) Join on underscore
static Iterable<String>	_split(CharSequence s) Split on _ & trim results
static String	cjoin(Object... args) Join on comma.
static String	djoin(Object... args) Join on dot
static boolean	isAbsUrl(CharSequence url) Check whether a url is absolute or note
static String	join(Object... args) Join without separator
static String	joins(String sep, Object... args) Join with a separator
static String	pajoin(Object... args) Join on slash & colon (e.g., path args in routing spec)
static String	percent(double value)
static String	pjoin(Object... args) Join on slash
static String	sjoin(Object... args) Join on space.
static Iterable<String>	split(CharSequence s) Split on space & trim results.
static String	ujoin(String pathPrefix, String... args) Join url components

Methods inherited from class java.lang.Object

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

Field Detail

SSV_JOINER

public static final com.google.common.base.Joiner SSV_JOINER

CSV_JOINER

public static final com.google.common.base.Joiner CSV_JOINER

JOINER

public static final com.google.common.base.Joiner JOINER

_JOINER

public static final com.google.common.base.Joiner _JOINER

PATH_JOINER

public static final com.google.common.base.Joiner PATH_JOINER

PATH_ARG_JOINER

public static final com.google.common.base.Joiner PATH_ARG_JOINER

DOT_JOINER

public static final com.google.common.base.Joiner DOT_JOINER

SSV_SPLITTER

public static final com.google.common.base.Splitter SSV_SPLITTER

_SPLITTER

public static final com.google.common.base.Splitter _SPLITTER

Constructor Detail

StringHelper

public StringHelper()

Method Detail

sjoin

public static String sjoin(Object... args)

Join on space.

Parameters:

args - to join

Returns:

args joined by space

cjoin

public static String cjoin(Object... args)

Join on comma.

Parameters:

args - to join

Returns:

args joined by comma

djoin

public static String djoin(Object... args)

Join on dot

Parameters:

args - to join

Returns:

args joined by dot

_join

public static String _join(Object... args)

Join on underscore

Parameters:

args - to join

Returns:

args joined underscore

pjoin

public static String pjoin(Object... args)

Join on slash

Parameters:

args - to join

Returns:

args joined with slash

pajoin

public static String pajoin(Object... args)

Join on slash & colon (e.g., path args in routing spec)

Parameters:

args - to join

Returns:

args joined with /:

join

public static String join(Object... args)

Join without separator

Parameters:

args -

Returns:

joined args with no separator

joins

public static String joins(String sep,
                           Object... args)

Join with a separator

Parameters:

sep - the separator

args - to join

Returns:

args joined with a separator

split

public static Iterable<String> split(CharSequence s)

Split on space & trim results.

Parameters:

s - the string to split

Returns:

an iterable of strings

_split

public static Iterable<String> _split(CharSequence s)

Split on _ & trim results

Parameters:

s - the string to split

Returns:

an iterable of strings

isAbsUrl

public static boolean isAbsUrl(CharSequence url)

Check whether a url is absolute or note

Parameters:

url - to check

Returns:

true if url starts with scheme:// or //

ujoin

public static String ujoin(String pathPrefix,
                           String... args)

Join url components

Parameters:

pathPrefix - for relative urls

args - url components to join

Returns:

an url string

percent

public static String percent(double value)