de.agilecoders.wicket.jquery.util
Class Generics2

java.lang.Object
  de.agilecoders.wicket.jquery.util.Generics2

public final class Generics2
extends Object

helper class to handle creation/transformation/filtering of collections. This class is used to wrap guava. Future releases of bootstrap won't depend on guava anymore.

Author:

miha

Method Summary

static <T> List<T>	filter(Iterable<T> unfiltered, com.google.common.base.Predicate<T> filter) Returns the elements of unfiltered that satisfy given filter.
static String	join(Iterable<?> elements, char separator) joins all given elements with a special separator
static <T> ArrayList<T>	newArrayList(Iterable<? extends T> elements) creates a new ArrayList from given array of elements.
static <T> ArrayList<T>	newArrayList(Iterator<? extends T> elements) Creates a mutable ArrayList instance containing the given elements.
static <T> ArrayList<T>	newArrayList(T... elements) creates a new ArrayList from given array of elements.
static <T> Set<T>	newHashSet(T... elements) creates a new HashSet from given array of elements.
static <T> Set<T>	newLinkedHashSet(Iterable<? extends T> elements) creates a new LinkedHashSet from given array of elements.
static List<String>	split(CharSequence value, String separator) splits a CharSequence by given separator.
static <P,R> List<R>	transform(List<P> elements, com.google.common.base.Function<P,R> transformer) Returns a list that applies transformer to each element of elements
static <P,R> List<R>	transform(P[] elements, com.google.common.base.Function<P,R> transformer) Returns a list that applies transformer to each element of elements
static <P,R> Set<R>	transform(Set<P> elements, com.google.common.base.Function<P,R> transformer) Returns a list that applies transformer to each element of elements
static <T> List<T>	transform(T[] elements) transform an array of elements into a list of elements

Methods inherited from class java.lang.Object

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

Method Detail

newArrayList

public static <T> ArrayList<T> newArrayList(T... elements)

creates a new ArrayList from given array of elements.

Type Parameters:

T - the type of all elements inside the list

Parameters:

elements - the elements to add to new ArrayList

Returns:

new ArrayList that contains all given elements

Throws:

IllegalArgumentException - if given array of elements is null

newArrayList

public static <T> ArrayList<T> newArrayList(Iterator<? extends T> elements)

Creates a mutable ArrayList instance containing the given elements.

Parameters:

elements - the elements that the list should contain, in order

Returns:

a new ArrayList containing those elements

newArrayList

public static <T> ArrayList<T> newArrayList(Iterable<? extends T> elements)

creates a new ArrayList from given array of elements.

Type Parameters:

T - the type of all elements inside the list

Parameters:

elements - the elements to add to new ArrayList

Returns:

new ArrayList that contains all given elements

Throws:

IllegalArgumentException - if given array of elements is null

newLinkedHashSet

public static <T> Set<T> newLinkedHashSet(Iterable<? extends T> elements)

creates a new LinkedHashSet from given array of elements.

Type Parameters:

T - the type of all elements inside the set

Parameters:

elements - the elements to add to new LinkedHashSet

Returns:

new LinkedHashSet that contains all given elements

Throws:

IllegalArgumentException - if given array of elements is null

newHashSet

public static <T> Set<T> newHashSet(T... elements)

creates a new HashSet from given array of elements.

Type Parameters:

T - the type of all elements inside the set

Parameters:

elements - the elements to add to new HashSet

Returns:

new HashSet that contains all given elements

Throws:

IllegalArgumentException - if given array of elements is null

join

public static String join(Iterable<?> elements,
                          char separator)

joins all given elements with a special separator

Parameters:

elements - elements to join

separator - separator to use

Returns:

elements as string

transform

public static <T> List<T> transform(T[] elements)

transform an array of elements into a list of elements

Type Parameters:

T - the type of elements

Parameters:

elements - the elements to add to list

Returns:

new list of elements

transform

public static <P,R> List<R> transform(List<P> elements,
                                      com.google.common.base.Function<P,R> transformer)

Returns a list that applies transformer to each element of elements

transform

public static <P,R> Set<R> transform(Set<P> elements,
                                     com.google.common.base.Function<P,R> transformer)

Returns a list that applies transformer to each element of elements

transform

public static <P,R> List<R> transform(P[] elements,
                                      com.google.common.base.Function<P,R> transformer)

Returns a list that applies transformer to each element of elements

filter

public static <T> List<T> filter(Iterable<T> unfiltered,
                                 com.google.common.base.Predicate<T> filter)

Returns the elements of unfiltered that satisfy given filter. The resulting iterable's iterator does not support remove().

split

public static List<String> split(CharSequence value,
                                 String separator)

splits a CharSequence by given separator.

Parameters:

value - the value to split

separator - the separator to use to split value

Returns:

list of values