org.intermine.util
Class CollectionUtil

java.lang.Object
  org.intermine.util.CollectionUtil

public final class CollectionUtil
extends java.lang.Object

Utilities for Collections.

Method Summary

static <E> java.util.Collection<java.util.List<E>>	fanOutCombinations(java.util.List<java.util.Collection<E>> values) Returns a collection containing all possible combinations of the input values.
static java.lang.Class<?>	findCommonSuperclass(java.util.Collection<java.lang.Class<?>> classes) Finds a common superclass or superinterface for all the classes specified in the arguments.
static java.util.Set<java.lang.Class<?>>	findCommonSuperclasses(java.util.Collection<java.lang.Class<?>> classes) Finds common superclasses and superinterfaces for all the classes specified in the arguments.
static <E> java.util.Map<java.lang.Class<?>,java.util.List<E>>	groupByClass(java.util.Collection<E> objects, boolean inherit) Sorts objects in the given collection into different types by Class.
static <K,V> java.util.LinkedHashMap<K,V>	linkedHashMapAdd(java.util.LinkedHashMap<K,V> map, K prevKey, K newKey, V newValue) Return a copy of the given map with the object inserted at the given index.

Methods inherited from class java.lang.Object

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

Method Detail

linkedHashMapAdd

public static <K,V> java.util.LinkedHashMap<K,V> linkedHashMapAdd(java.util.LinkedHashMap<K,V> map,
                                                                  K prevKey,
                                                                  K newKey,
                                                                  V newValue)

Return a copy of the given map with the object inserted at the given index.

Type Parameters:

K - The key type

V - The value type

Parameters:

map - the LinkedHashMap to copy

prevKey - the newKey,newValue pair are added after this key. If null the newKey,newValue pair is added first

newKey - the new key

newValue - the new value

Returns:

the copied LinkedHashMap with newKey and newValue added

groupByClass

public static <E> java.util.Map<java.lang.Class<?>,java.util.List<E>> groupByClass(java.util.Collection<E> objects,
                                                                                   boolean inherit)

Sorts objects in the given collection into different types by Class.

Type Parameters:

E - the element type

Parameters:

objects - a Collection of objects

inherit - if true, objects are put into all their class's superclasses as well, except Object - the original Collection can be used in that case

Returns:

a Map from Class to List of objects in that class

fanOutCombinations

public static <E> java.util.Collection<java.util.List<E>> fanOutCombinations(java.util.List<java.util.Collection<E>> values)

Returns a collection containing all possible combinations of the input values.

Type Parameters:

E - the element type

Parameters:

values - a List of collections of values

Returns:

a collection of Lists, all the same size as the input List, containing all possible combinations of the values in the collections, in their respective indexes in the List.

findCommonSuperclasses

public static java.util.Set<java.lang.Class<?>> findCommonSuperclasses(java.util.Collection<java.lang.Class<?>> classes)

Finds common superclasses and superinterfaces for all the classes specified in the arguments.

Parameters:

classes - a Collection of Classes

Returns:

a Collection of Classes that are superclasses of all the argument classes, without any that are superclasses of classes in this return Collection

findCommonSuperclass

public static java.lang.Class<?> findCommonSuperclass(java.util.Collection<java.lang.Class<?>> classes)

Finds a common superclass or superinterface for all the classes specified in the arguments.

Parameters:

classes - a Collection of Classes

Returns:

a Class that is a common superclass or superinterface