com.revolsys.util

Class CollectionUtil

java.lang.Object

com.revolsys.util.CollectionUtil

public final class CollectionUtil
extends Object

Method Summary

Methods

Modifier and Type	Method and Description
static <V> void	addAllIfNotNull(Collection<V> collection, Collection<V> values)
static <V> boolean	addIfNotNull(Collection<V> collection, V value)
static void	append(StringBuilder string, Collection<? extends Object> values)
static void	append(StringBuilder buffer, Collection<? extends Object> values, boolean skipNulls, String separator)
static void	append(StringBuilder buffer, Collection<? extends Object> values, String separator)
static List<? extends Object>	arrayToList(Object value)
static <V> boolean	collectionContains(Map<Object,Collection<V>> map, Object key, V value)
static <T> boolean	containsReference(List<WeakReference<T>> list, T object)
static <T> List<T>	copy(List<T> list)
static <V> Set<V>	createHashSet(Collection<? extends V> set)
static <V> Set<V>	createLinkedHashSet(Collection<? extends V> set)
static <T> T	get(Collection<T> collection, int index)
static <K,V> int	getCollectionSize(Map<K,? extends Collection<V>> map, K key)
static <T> List<T>	getReferences(List<WeakReference<T>> list)
static <K,V> Set<V>	getSet(Map<K,Set<V>> map, K key)
static <V> List<V>	list(Iterable<? extends V> values)
static <V> List<V>	list(V... values)
static <T> void	removeReference(List<WeakReference<T>> list, T object)
static String	replaceProperties(CharSequence string, Map<String,Object> properties)
static <K,V> boolean	setContains(Map<K,Set<V>> map, K key, V value)
static <K extends Comparable<K>,V extends Comparable<V>> Map<K,V>	sortByValues(Map<K,V> map)
static List<String>	split(String text, String regex)
static <T> List<T>	subList(Iterable<T> iterable, int size)
static float[]	toFloatArray(double[] doubleArray)
static List<Double>	toList(double... values)
static List<Integer>	toList(int... values)
static <V> List<V>	toList(V... values)
static String	toListString(Iterable<? extends Object> iterable) Create a string using the same style as java.util.List.toString.
static String	toListString(Iterator<? extends Object> iterator)
static String	toString(boolean skipNulls, String separator, Collection<? extends Object> values)
static String	toString(boolean skipNulls, String separator, Object... values)
static String	toString(Collection<? extends Object> values) Convert the collection to a string, using the "," separator between each value.
static String	toString(String separator, Collection<? extends Object> values) Convert the collection to a string, using the separator between each value.
static String	toString(String separator, int... values)
static String	toString(String separator, Object... values)
static List<String>	toStringList(Collection<?> values)

Methods inherited from class java.lang.Object

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

Method Detail

addAllIfNotNull

public static <V> void addAllIfNotNull(Collection<V> collection,
                       Collection<V> values)

addIfNotNull

public static <V> boolean addIfNotNull(Collection<V> collection,
                       V value)

append

public static void append(StringBuilder string,
          Collection<? extends Object> values)

append

public static void append(StringBuilder buffer,
          Collection<? extends Object> values,
          boolean skipNulls,
          String separator)

append

public static void append(StringBuilder buffer,
          Collection<? extends Object> values,
          String separator)

arrayToList

public static List<? extends Object> arrayToList(Object value)

collectionContains

public static <V> boolean collectionContains(Map<Object,Collection<V>> map,
                             Object key,
                             V value)

containsReference

public static <T> boolean containsReference(List<WeakReference<T>> list,
                            T object)

copy

public static <T> List<T> copy(List<T> list)

createHashSet

public static <V> Set<V> createHashSet(Collection<? extends V> set)

createLinkedHashSet

public static <V> Set<V> createLinkedHashSet(Collection<? extends V> set)

get

public static <T> T get(Collection<T> collection,
        int index)

getCollectionSize

public static <K,V> int getCollectionSize(Map<K,? extends Collection<V>> map,
                          K key)

getReferences

public static <T> List<T> getReferences(List<WeakReference<T>> list)

getSet

public static <K,V> Set<V> getSet(Map<K,Set<V>> map,
                  K key)

list

public static <V> List<V> list(Iterable<? extends V> values)

list

public static <V> List<V> list(V... values)

removeReference

public static <T> void removeReference(List<WeakReference<T>> list,
                       T object)

replaceProperties

public static final String replaceProperties(CharSequence string,
                       Map<String,Object> properties)

setContains

public static <K,V> boolean setContains(Map<K,Set<V>> map,
                        K key,
                        V value)

sortByValues

public static <K extends Comparable<K>,V extends Comparable<V>> Map<K,V> sortByValues(Map<K,V> map)

split

public static List<String> split(String text,
                 String regex)

subList

public static <T> List<T> subList(Iterable<T> iterable,
                  int size)

toFloatArray

public static float[] toFloatArray(double[] doubleArray)

toList

public static List<Double> toList(double... values)

toList

public static List<Integer> toList(int... values)

toList

public static <V> List<V> toList(V... values)

toListString

public static String toListString(Iterable<? extends Object> iterable)

Create a string using the same style as java.util.List.toString.

Parameters:

iterator -

Returns:

toListString

public static String toListString(Iterator<? extends Object> iterator)

toString

public static String toString(boolean skipNulls,
              String separator,
              Collection<? extends Object> values)

toString

public static String toString(boolean skipNulls,
              String separator,
              Object... values)

toString

public static String toString(Collection<? extends Object> values)

Convert the collection to a string, using the "," separator between each value. Nulls will be the empty string "".

Parameters:

values - The values.

separator - The separator.

Returns:

The string.

toString

public static String toString(String separator,
              Collection<? extends Object> values)

Convert the collection to a string, using the separator between each value. Nulls will be the empty string "".

Parameters:

separator - The separator.

values - The values.

Returns:

The string.

toString

public static String toString(String separator,
              int... values)

toString

public static String toString(String separator,
              Object... values)

toStringList

public static List<String> toStringList(Collection<?> values)