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org.apache.oozie.util
Class ELConstantsFunctions

java.lang.Object
  org.apache.oozie.util.ELConstantsFunctions

public class ELConstantsFunctions
extends Object

Base EL constants and functions.

Field Summary

static long	GB GigaByte constant (1024 MB).
static long	KB KiloByte constant (1024).
static long	MB MegaByte constant (1024 KB).
static long	PB PetaByte constant (1024 TB).
static int	SUBMIT_DAYS
static int	SUBMIT_HOURS
static int	SUBMIT_MINUTES
static long	TB TeraByte constant (1024 GB).

Constructor Summary

ELConstantsFunctions()

Method Summary

static String	concat(String s1, String s2) Return the concatenation of 2 strings.
static Object	firstNotNull(Object o1, Object o2) Return the first not null value, or null if both are null.
static String	timestamp() Return the UTC current date and time in W3C format down to second (yyyy-MM-ddTHH:mm:ssZ).
static String	trim(String input) Return the trimmed version of the given string.
static String	urlEncode(String input) Translates a string into application/x-www-form-urlencoded format using UTF-8 encoding scheme.

Methods inherited from class java.lang.Object

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

Field Detail

KB

public static final long KB

KiloByte constant (1024). Defined for EL as 'KB'.

See Also:

Constant Field Values

MB

public static final long MB

MegaByte constant (1024 KB). Defined for EL as 'MB'.

See Also:

Constant Field Values

GB

public static final long GB

GigaByte constant (1024 MB). Defined for EL as 'GB'.

See Also:

Constant Field Values

TB

public static final long TB

TeraByte constant (1024 GB). Defined for EL as 'TB'.

See Also:

Constant Field Values

PB

public static final long PB

PetaByte constant (1024 TB). Defined for EL as 'PB'.

See Also:

Constant Field Values

SUBMIT_MINUTES

public static final int SUBMIT_MINUTES

See Also:

Constant Field Values

SUBMIT_HOURS

public static final int SUBMIT_HOURS

See Also:

Constant Field Values

SUBMIT_DAYS

public static final int SUBMIT_DAYS

See Also:

Constant Field Values

Constructor Detail

ELConstantsFunctions

public ELConstantsFunctions()

Method Detail

firstNotNull

public static Object firstNotNull(Object o1,
                                  Object o2)

Return the first not null value, or null if both are null. Defined for EL as 'Object firstNotNull(Object, Object)'.

Parameters:

o1 - first value.

o2 - second value.

Returns:

the first not null value, or or null if both are null

concat

public static String concat(String s1,
                            String s2)

Return the concatenation of 2 strings.

A string with null value is considered as an empty string.

Parameters:

s1 - first string.

s2 - second string.

Returns:

the concatenation of s1 and s2.

trim

public static String trim(String input)

Return the trimmed version of the given string.

Parameters:

input - string to be trimmed

Returns:

the trimmed version of the given string or the empty string if the given string was null

timestamp

public static String timestamp()

Return the UTC current date and time in W3C format down to second (yyyy-MM-ddTHH:mm:ssZ). i.e.: 1997-07-16T19:20:30Z

Returns:

the formatted time string.

urlEncode

public static String urlEncode(String input)

Translates a string into application/x-www-form-urlencoded format using UTF-8 encoding scheme. Bytes for unsafe characters are also obtained using UTF-8 scheme.

Parameters:

input - string to be encoded

Returns:

the encoded String