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

Fields

Modifier and Type	Field and Description
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

Constructors

Constructor and Description
ELConstantsFunctions()

Method Summary

Methods

Modifier and Type	Method and Description
static String	appendAll(String src, String append, String delimeter) Add the append string into each splitted sub-strings of the first string ('src').
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	replaceAll(String src, String regex, String replacement) Replace each occurrence of regular expression match in the first string with the replacement string.
static String	timestamp() Return the current datetime in ISO8601 using Oozie processing timezone, yyyy-MM-ddTHH:mmZ.
static String	toConfigurationStr(Map<String,String> map)
static String	toJsonStr(Map<String,String> map)
static String	toPropertiesStr(Map<String,String> map)
static String	trim(String input)
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.

replaceAll

public static String replaceAll(String src,
                String regex,
                String replacement)

Replace each occurrence of regular expression match in the first string with the replacement string. This EL function utilizes the java String class replaceAll method. For more details please see http://docs.oracle.com/javase/6/docs/api/java/lang/String.html#replaceAll(java.lang.String,%20java.lang.String)

Parameters:

src - source string.

regex - the regular expression to which this string is to be matched. null means no replacement.

replacement - - the string to be substituted for each match. If null, it will considered as ""

Returns:

the replaced string.

appendAll

public static String appendAll(String src,
               String append,
               String delimeter)

Add the append string into each splitted sub-strings of the first string ('src'). The split is performed into src string using the delimiter. E.g. appendAll("/a/b/,/c/b/,/c/d/", "ADD", ",") will return "/a/b/ADD,/c/b/ADD,/c/d/ADD"

Parameters:

src - source string.

append - - the string to be appended for each match. If null, it will considered as ""

delimeter - the string that is used to split the 'src' into substring before the append. null means no append.

Returns:

the appended string.

trim

public static String trim(String input)

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 current datetime in ISO8601 using Oozie processing timezone, yyyy-MM-ddTHH:mmZ. i.e.: 1997-07-16T19:20Z

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

toJsonStr

public static String toJsonStr(Map<String,String> map)

toPropertiesStr

public static String toPropertiesStr(Map<String,String> map)

toConfigurationStr

public static String toConfigurationStr(Map<String,String> map)