Package org.apache.hadoop.yarn.util

Class StringHelper

java.lang.Object

org.apache.hadoop.yarn.util.StringHelper

@Private
public final class StringHelper
extends java.lang.Object

Common string manipulation helpers

Field Summary

Fields

Modifier and Type	Field	Description
static org.apache.hadoop.thirdparty.com.google.common.base.Joiner	_JOINER
static org.apache.hadoop.thirdparty.com.google.common.base.Splitter	_SPLITTER
static org.apache.hadoop.thirdparty.com.google.common.base.Joiner	CSV_JOINER
static org.apache.hadoop.thirdparty.com.google.common.base.Joiner	DOT_JOINER
static org.apache.hadoop.thirdparty.com.google.common.base.Joiner	JOINER
static org.apache.hadoop.thirdparty.com.google.common.base.Joiner	PATH_ARG_JOINER
static org.apache.hadoop.thirdparty.com.google.common.base.Joiner	PATH_JOINER
static org.apache.hadoop.thirdparty.com.google.common.base.Joiner	SSV_JOINER
static org.apache.hadoop.thirdparty.com.google.common.base.Splitter	SSV_SPLITTER

Constructor Summary

Constructors

Constructor	Description
StringHelper()

Method Summary

Modifier and Type	Method	Description
static java.lang.String	_join(java.lang.Object... args)	Join on underscore.
static java.lang.Iterable<java.lang.String>	_split(java.lang.CharSequence s)	Split on _ and trim results.
static java.lang.String	cjoin(java.lang.Object... args)	Join on comma.
static java.lang.String	djoin(java.lang.Object... args)	Join on dot.
static java.lang.String	getResourceSecondsString(java.util.Map<java.lang.String,java.lang.Long> targetMap)
static boolean	isAbsUrl(java.lang.CharSequence url)	Check whether a url is absolute or note.
static java.lang.String	join(java.lang.Object... args)	Join without separator.
static java.lang.String	joins(java.lang.String sep, java.lang.Object... args)	Join with a separator
static java.lang.String	pajoin(java.lang.Object... args)	Join on slash and colon (e.g., path args in routing spec)
static java.lang.String	pjoin(java.lang.Object... args)	Join on slash.
static java.lang.String	sjoin(java.lang.Object... args)	Join on space.
static java.lang.Iterable<java.lang.String>	split(java.lang.CharSequence s)	Split on space and trim results.
static java.lang.String	ujoin(java.lang.String pathPrefix, java.lang.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 org.apache.hadoop.thirdparty.com.google.common.base.Joiner SSV_JOINER

CSV_JOINER

public static final org.apache.hadoop.thirdparty.com.google.common.base.Joiner CSV_JOINER

JOINER

public static final org.apache.hadoop.thirdparty.com.google.common.base.Joiner JOINER

_JOINER

public static final org.apache.hadoop.thirdparty.com.google.common.base.Joiner _JOINER

PATH_JOINER

public static final org.apache.hadoop.thirdparty.com.google.common.base.Joiner PATH_JOINER

PATH_ARG_JOINER

public static final org.apache.hadoop.thirdparty.com.google.common.base.Joiner PATH_ARG_JOINER

DOT_JOINER

public static final org.apache.hadoop.thirdparty.com.google.common.base.Joiner DOT_JOINER

SSV_SPLITTER

public static final org.apache.hadoop.thirdparty.com.google.common.base.Splitter SSV_SPLITTER

_SPLITTER

public static final org.apache.hadoop.thirdparty.com.google.common.base.Splitter _SPLITTER

Constructor Detail

StringHelper

public StringHelper()

Method Detail

sjoin

public static java.lang.String sjoin(java.lang.Object... args)

Join on space.

Parameters:

args - to join

Returns:

args joined by space

cjoin

public static java.lang.String cjoin(java.lang.Object... args)

Join on comma.

Parameters:

args - to join

Returns:

args joined by comma

djoin

public static java.lang.String djoin(java.lang.Object... args)

Join on dot.

Parameters:

args - to join

Returns:

args joined by dot

_join

public static java.lang.String _join(java.lang.Object... args)

Join on underscore.

Parameters:

args - to join

Returns:

args joined underscore

pjoin

public static java.lang.String pjoin(java.lang.Object... args)

Join on slash.

Parameters:

args - to join

Returns:

args joined with slash

pajoin

public static java.lang.String pajoin(java.lang.Object... args)

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

Parameters:

args - to join

Returns:

args joined with /:

join

public static java.lang.String join(java.lang.Object... args)

Join without separator.

Parameters:

args - to join.

Returns:

joined args with no separator

joins

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

Join with a separator

Parameters:

sep - the separator

args - to join

Returns:

args joined with a separator

split

public static java.lang.Iterable<java.lang.String> split(java.lang.CharSequence s)

Split on space and trim results.

Parameters:

s - the string to split

Returns:

an iterable of strings

_split

public static java.lang.Iterable<java.lang.String> _split(java.lang.CharSequence s)

Split on _ and trim results.

Parameters:

s - the string to split

Returns:

an iterable of strings

isAbsUrl

public static boolean isAbsUrl(java.lang.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 java.lang.String ujoin(java.lang.String pathPrefix,
                                     java.lang.String... args)

Join url components.

Parameters:

pathPrefix - for relative urls

args - url components to join

Returns:

an url string

getResourceSecondsString

public static java.lang.String getResourceSecondsString(java.util.Map<java.lang.String,java.lang.Long> targetMap)