org.bongiorno.misc.collections

Class WSCollections

java.lang.Object

org.bongiorno.misc.collections.WSCollections

public final class WSCollections
extends Object

Constructor Summary

Constructors

Constructor and Description
WSCollections()

Method Summary

Modifier and Type	Method and Description
static <T> Map<T,T>	asMap(T... pairs) Map equivalent of Arrays.asList.
static <T> Collection<T>	delimitedCollection(Collection<T> c, String delimiter)
static <K,V> Map<K,V>	delimitedMap(Map<K,V> m, CharSequence postKeyDelim, CharSequence postValueDelim)
static <K,V> Map<K,V>	delimitedMap(Map<K,V> m, CharSequence preKey, CharSequence postKey, CharSequence postValue)
static <K,V> Map<K,V>	delimitedMap(Map<K,V> m, CharSequence preKey, CharSequence postKey, CharSequence postValue, boolean trim)
static <T> Collection<T>	delimitNewLine(Collection<T> c) Delimits with the system line separator.
static <K,V> Map<K,V>	exceptionOnDuplicateMap(Map<K,V> m)
static <T> Set<T>	exceptionOnDuplicateSet(Set<T> s)
static <K,V> SortedMap<K,V>	exceptionOnDuplicateSortedMap(SortedMap<K,V> m)
static <C extends Map<K,V>,K,V> C	putInMap(Iterable<K> things, C destinationMap, java.util.function.Function<? super K,V> valueFunction)
static <C extends Map<K,V>,K,V> C	putInMap(Iterable<K> things, C destinationMap, V value)
static <K,V> Map<K,V>	putInMap(Iterable<K> things, java.util.function.Function<? super K,V> valueFunction)
static <K,V> Map<K,V>	putInMap(Iterable<K> things, V value)

Methods inherited from class java.lang.Object

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

Constructor Detail

WSCollections

public WSCollections()

Method Detail

exceptionOnDuplicateMap

public static <K,V> Map<K,V> exceptionOnDuplicateMap(Map<K,V> m)

exceptionOnDuplicateSortedMap

public static <K,V> SortedMap<K,V> exceptionOnDuplicateSortedMap(SortedMap<K,V> m)

delimitedCollection

public static <T> Collection<T> delimitedCollection(Collection<T> c,
                                                    String delimiter)

delimitNewLine

public static <T> Collection<T> delimitNewLine(Collection<T> c)

Delimits with the system line separator. Handy for debugging

Type Parameters:

T - the stuff in the collection

Parameters:

c - your collection

Returns:

a system dependent newline delimited collection

delimitedMap

public static <K,V> Map<K,V> delimitedMap(Map<K,V> m,
                                          CharSequence postKeyDelim,
                                          CharSequence postValueDelim)

Type Parameters:

K - key

V - value

Parameters:

m - the map to delegate to

postKeyDelim - what you want to come after every key

postValueDelim - what you want to come after every value

Returns:

a map that behaves as 'm' except has a very nice toString()

delimitedMap

public static <K,V> Map<K,V> delimitedMap(Map<K,V> m,
                                          CharSequence preKey,
                                          CharSequence postKey,
                                          CharSequence postValue)

Type Parameters:

K - key

V - value

Parameters:

m - the map to delegate to

preKey - what you want to come before every key

postKey - what you want to come after every key

postValue - what you want to come after every value

Returns:

a map that behaves as 'm' except has a very nice toString()

delimitedMap

public static <K,V> Map<K,V> delimitedMap(Map<K,V> m,
                                          CharSequence preKey,
                                          CharSequence postKey,
                                          CharSequence postValue,
                                          boolean trim)

Type Parameters:

K - key

V - value

Parameters:

m - the map to delegate to

preKey - what you want to come before every key

postKey - what you want to come after every key

postValue - what you want to come after every value

trim - if, when output is complete, you want the last postValue to be trimmed off

Returns:

a map that behaves as 'm' except has a very nice toString()

exceptionOnDuplicateSet

public static <T> Set<T> exceptionOnDuplicateSet(Set<T> s)

asMap

public static <T> Map<T,T> asMap(T... pairs)
                          throws ArrayIndexOutOfBoundsException

Map equivalent of Arrays.asList. This works just like the way you would declare a hash (map) in Perl

Type Parameters:

T - the element to make pairs from

Parameters:

pairs - Keys and values, alternately

Returns:

a new Map instance based on your input.

Throws:

ArrayIndexOutOfBoundsException - If an odd number of Objects are passed in

putInMap

public static <K,V> Map<K,V> putInMap(Iterable<K> things,
                                      java.util.function.Function<? super K,V> valueFunction)

putInMap

public static <K,V> Map<K,V> putInMap(Iterable<K> things,
                                      V value)

putInMap

public static <C extends Map<K,V>,K,V> C putInMap(Iterable<K> things,
                                                  C destinationMap,
                                                  java.util.function.Function<? super K,V> valueFunction)

putInMap

public static <C extends Map<K,V>,K,V> C putInMap(Iterable<K> things,
                                                  C destinationMap,
                                                  V value)