io.cdap.functions

Class Global

java.lang.Object

io.cdap.functions.Global

public final class Global
extends Object

Collection of useful expression functions made available in the context of an expression. set-column column

Constructor Summary

Constructors

Constructor and Description
Global()

Method Summary

Modifier and Type	Method and Description
static Object	coalesce(Object... objects) Finds the first non-null object.
static String	concat(String a, String b) Concats two string without any separator in between.
static String	concat(String a, String delim, String b) Concats two string with a delimiter.
static String	format(String str, Object... args) Formats the string in way similar to String format.
static String	padAtEnd(String string, int minLength, char padChar) Returns a string, of length at least minLength, consisting of string appended with as many copies of padChar as are necessary to reach that length.
static String	padAtStart(String string, int minLength, char padChar) Returns a string, of length at least minLength, consisting of string prepended with as many copies of padChar as are necessary to reach that length.
static Object	rcoalesce(Object... objects) Finds the last non-null object.
static String	repeat(String string, int count) Returns a string consisting of a specific number of concatenated copies of an input string.
static byte[]	toBytes(String value) Converts a String value to byte array.
static double	toDouble(String value) Converts String value to double.
static float	toFloat(String value) Coverts a String value to float.
static int	toInteger(String value) Converts a String value to integer.
static long	toLong(String value) Converts a String value to Long.
static String	unquote(String string) This String util method removes single or double quotes from a string if its quoted.

Methods inherited from class java.lang.Object

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

Constructor Detail

Global

public Global()

Method Detail

toDouble

public static double toDouble(String value)

Converts String value to double.

Parameters:

value - of type String to be converted to double.

Returns:

double value of the string passed.

toFloat

public static float toFloat(String value)

Coverts a String value to float.

Parameters:

value - of type string to be converted to float.

Returns:

float value of the string passed.

toLong

public static long toLong(String value)

Converts a String value to Long.

Parameters:

value - of type string to be converted to float.

Returns:

float value of the string passed.

toInteger

public static int toInteger(String value)

Converts a String value to integer.

Parameters:

value - of type string to be converted to integer.

Returns:

integer value of the string passed.

toBytes

public static byte[] toBytes(String value)

Converts a String value to byte array.

Parameters:

value - of type string to be converted to byte array.

Returns:

byte array value of the string passed.

concat

public static String concat(String a,
                            String b)

Concats two string without any separator in between.

Parameters:

a - First string

b - Second String

Returns:

concated Strings

concat

public static String concat(String a,
                            String delim,
                            String b)

Concats two string with a delimiter.

Parameters:

a - first string.

delim - delimiter.

b - second string.

Returns:

concated string.

coalesce

public static Object coalesce(Object... objects)

Finds the first non-null object.

Parameters:

objects - to be check for null.

Returns:

first non-null object.

rcoalesce

public static Object rcoalesce(Object... objects)

Finds the last non-null object.

Parameters:

objects - to be check for null.

Returns:

first non-null object.

format

public static String format(String str,
                            Object... args)

Formats the string in way similar to String format.

Parameters:

str - format of string.

args - arguments to included in the string.

Returns:

A formatted string.

padAtStart

public static String padAtStart(String string,
                                int minLength,
                                char padChar)

Returns a string, of length at least minLength, consisting of string prepended with as many copies of padChar as are necessary to reach that length. For example,

• padStart("7", 3, '0') returns "007"
• padStart("2010", 3, '0') returns "2010"

Returns:

the padded string.

padAtEnd

public static String padAtEnd(String string,
                              int minLength,
                              char padChar)

Returns a string, of length at least minLength, consisting of string appended with as many copies of padChar as are necessary to reach that length. For example,

• padEnd("4.", 5, '0') returns "4.000"
• padEnd("2010", 3, '!') returns "2010"

Returns:

the padded string

repeat

public static String repeat(String string,
                            int count)

Returns a string consisting of a specific number of concatenated copies of an input string. For example, repeat("hey", 3) returns the string "heyheyhey".

Parameters:

string - any non-null string

count - the number of times to repeat it; a nonnegative integer

Returns:

a string containing string repeated count times (the empty string if count is zero)

Throws:

IllegalArgumentException - if count is negative

unquote

public static String unquote(String string)

This String util method removes single or double quotes from a string if its quoted. for input string = "mystr1" output will be = mystr1 for input string = 'mystr2' output will be = mystr2

Parameters:

string - value to be unquoted.

Returns:

value unquoted, null if input is null.