Package org.opencastproject.util.data.functions

Class Strings

java.lang.Object

org.opencastproject.util.data.functions.Strings

public final class Strings
extends Object

Functions for strings.

Field Summary

Fields

Modifier and Type	Field	Description
static final Function<String,Boolean>	toBool	Convert a string into a boolean.
static final Function<String,Option<Double>>	toDouble	Convert a string into a long if possible.
static final Function<String,Option<Integer>>	toInt	Convert a string into an integer if possible.
static final Function<String,List<String>>	trimToNil
static final Function<String,Option<String>>	trimToNone	Trim a string and return either some or none if it's empty.

Method Summary

Modifier and Type	Method	Description
static <A> Function<A,Option<String>>	asString()	Return a.toString() wrapped in a some if a !
static Option<String>	asString(Object a)	Return a.toString() wrapped in a some if a !
static <A> Function<A,String>	asStringNull()	Return a.toString() or <null> if argument is null.
static <A> Function<A,String>	format(Format f)
static Function<String,String[]>	split(Pattern splitter)	Create a split function from a regex pattern.
static Option<String>	trimToNone(String a)	Trim a string and return either some or none if it's empty.

Methods inherited from class java.lang.Object

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

Field Details

trimToNone

public static final Function<String,Option<String>> trimToNone

Trim a string and return either some or none if it's empty. The string may be null.

toDouble

public static final Function<String,Option<Double>> toDouble

Convert a string into a long if possible.

toInt

public static final Function<String,Option<Integer>> toInt

Convert a string into an integer if possible.

toBool

public static final Function<String,Boolean> toBool

Convert a string into a boolean.

See Also:

• Boolean.valueOf(String)

trimToNil

public static final Function<String,List<String>> trimToNil

Method Details

trimToNone

public static Option<String> trimToNone(String a)

Trim a string and return either some or none if it's empty. The string may be null.

asString

public static Option<String> asString(Object a)

Return a.toString() wrapped in a some if a != null, none otherwise.

asString

public static <A> Function<A,Option<String>> asString()

Return a.toString() wrapped in a some if a != null, none otherwise.

asStringNull

public static <A> Function<A,String> asStringNull()

Return a.toString() or <null> if argument is null.

format

public static <A> Function<A,String> format(Format f)

split

public static Function<String,String[]> split(Pattern splitter)

Create a split function from a regex pattern.