Package com.jgalgo.graph

Class IndexIdMaps

java.lang.Object

com.jgalgo.graph.IndexIdMaps

public class IndexIdMaps
extends Object

Static methods class for index-id maps.

Author:

Barak Ugav

Method Summary

Modifier and Type	Method	Description
static <K> IntCollection	idToIndexCollection(Collection<K> idCollection, IndexIdMap<K> map)	Create an indices collection from a collection of IDs.
static <K> IntIterator	idToIndexIterator(Iterator<K> idIter, IndexIdMap<K> map)	Create an indices iterator from an iterator of IDs.
static <K> IntSet	idToIndexSet(Set<K> idSet, IndexIdMap<K> map)	Create an indices set from a set of IDs.
static <K> IWeightFunction	idToIndexWeightFunc(WeightFunction<K> w, IndexIdMap<K> map)	Create a weight function that accept elements indices, given a weight function that accept elements IDs.
static <K> IWeightFunctionInt	idToIndexWeightFunc(WeightFunctionInt<K> w, IndexIdMap<K> map)	Create an integer weight function that accept elements indices, given a weight function that accept elements IDs.
static <K,T,WeightsT extends IWeights<T>> WeightsT	idToIndexWeights(Weights<K,T> weights, IndexIdMap<K> map)	Create a weights view that is accessed by the elements indices, given a weights container that is accessed by the element IDs.
static <K> Collection<K>	indexToIdCollection(IntCollection indexCollection, IndexIdMap<K> map)	Create an IDs collection from a collection of indices.
static IntCollection	indexToIdCollection(IntCollection indexCollection, IndexIntIdMap map)	Create an int IDs collection from a collection of indices.
static <V,E> EdgeIter<V,E>	indexToIdEdgeIter(Graph<V,E> g, IEdgeIter indexIter)	Create an IEdgeIter that return IDs of vertices and edges from an IEdgeIter that return indices of vertices and edges.
static IEdgeIter	indexToIdEdgeIter(IntGraph g, IEdgeIter indexIter)	Create an IEdgeIter that return IDs of vertices and edges from an IEdgeIter that return indices of vertices and edges.
static <K> Iterator<K>	indexToIdIterator(IntIterator indexIter, IndexIdMap<K> map)	Create an IDs iterator from an iterator of indices.
static IntIterator	indexToIdIterator(IntIterator indexIter, IndexIntIdMap map)	Create an IDs iterator from an iterator of indices.
static <K> List<K>	indexToIdList(IntList indexList, IndexIdMap<K> map)	Create an IDs list from a list of indices.
static IntList	indexToIdList(IntList indexList, IndexIntIdMap map)	Create an IDs list from a list of indices.
static <K> Set<K>	indexToIdSet(IntSet indexSet, IndexIdMap<K> map)	Create an IDs set from a set of indices.
static IntSet	indexToIdSet(IntSet indexSet, IndexIntIdMap map)	Create an IDs set from a set of indices.

Methods inherited from class java.lang.Object

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

Method Detail

indexToIdIterator

public static <K> Iterator<K> indexToIdIterator(IntIterator indexIter,
                                                IndexIdMap<K> map)

Create an IDs iterator from an iterator of indices.

Type Parameters:

K - the type of IDs

Parameters:

indexIter - an iterator of indices

map - index-id mapping

Returns:

an iterator that iterate over the IDs matching the indices iterated by the original index-iterator

indexToIdIterator

public static IntIterator indexToIdIterator(IntIterator indexIter,
                                            IndexIntIdMap map)

Create an IDs iterator from an iterator of indices.

Parameters:

indexIter - an iterator of indices

map - index-id mapping

Returns:

an iterator that iterate over the IDs matching the indices iterated by the original index-iterator

idToIndexIterator

public static <K> IntIterator idToIndexIterator(Iterator<K> idIter,
                                                IndexIdMap<K> map)

Create an indices iterator from an iterator of IDs.

Type Parameters:

K - the type of IDs

Parameters:

idIter - an iterator of IDs

map - index-id mapping

Returns:

an iterator that iterate over the indices matching the IDs iterated by the original ID-iterator

indexToIdEdgeIter

public static <V,E> EdgeIter<V,E> indexToIdEdgeIter(Graph<V,E> g,
                                                                IEdgeIter indexIter)

Create an IEdgeIter that return IDs of vertices and edges from an IEdgeIter that return indices of vertices and edges.

Type Parameters:

V - the vertices type

E - the edges type

Parameters:

g - the graph

indexIter - an IEdgeIter that return indices of vertices and edges

Returns:

IEdgeIter that return IDs of vertices and edges matching the indices of vertices and edges returned by the original index-iterator

indexToIdEdgeIter

public static IEdgeIter indexToIdEdgeIter(IntGraph g,
                                          IEdgeIter indexIter)

Create an IEdgeIter that return IDs of vertices and edges from an IEdgeIter that return indices of vertices and edges.

Parameters:

g - the graph

indexIter - an IEdgeIter that return indices of vertices and edges

Returns:

IEdgeIter that return IDs of vertices and edges matching the indices of vertices and edges returned by the original index-iterator

indexToIdCollection

public static <K> Collection<K> indexToIdCollection(IntCollection indexCollection,
                                                    IndexIdMap<K> map)

Create an IDs collection from a collection of indices.

Type Parameters:

K - the type of IDs

Parameters:

indexCollection - a collection of indices

map - index-id mapping

Returns:

a collection that contain IDs matching the indices contained in the original index-collection

indexToIdCollection

public static IntCollection indexToIdCollection(IntCollection indexCollection,
                                                IndexIntIdMap map)

Create an int IDs collection from a collection of indices.

Parameters:

indexCollection - a collection of indices

map - index-id mapping

Returns:

a collection that contain IDs matching the indices contained in the original index-collection

indexToIdSet

public static <K> Set<K> indexToIdSet(IntSet indexSet,
                                      IndexIdMap<K> map)

Create an IDs set from a set of indices.

Type Parameters:

K - the type of IDs

Parameters:

indexSet - a set of indices

map - index-id mapping

Returns:

a set that contain IDs matching the indices contained in the original index-set

indexToIdSet

public static IntSet indexToIdSet(IntSet indexSet,
                                  IndexIntIdMap map)

Create an IDs set from a set of indices.

Parameters:

indexSet - a set of indices

map - index-id mapping

Returns:

a set that contain IDs matching the indices contained in the original index-set

idToIndexCollection

public static <K> IntCollection idToIndexCollection(Collection<K> idCollection,
                                                    IndexIdMap<K> map)

Create an indices collection from a collection of IDs.

Type Parameters:

K - the type of IDs

Parameters:

idCollection - a collection of IDs

map - index-id mapping

Returns:

a collection that contain indices matching the IDs contained in the original ID-collection

idToIndexSet

public static <K> IntSet idToIndexSet(Set<K> idSet,
                                      IndexIdMap<K> map)

Create an indices set from a set of IDs.

Type Parameters:

K - the type of IDs

Parameters:

idSet - a set of IDs

map - index-id mapping

Returns:

a set that contain indices matching the IDs contained in the original ID-set

indexToIdList

public static <K> List<K> indexToIdList(IntList indexList,
                                        IndexIdMap<K> map)

Create an IDs list from a list of indices.

Type Parameters:

K - the type of IDs

Parameters:

indexList - a list of indices

map - index-id mapping

Returns:

a list that contain IDs matching the indices contained in the original index-list

indexToIdList

public static IntList indexToIdList(IntList indexList,
                                    IndexIntIdMap map)

Create an IDs list from a list of indices.

Parameters:

indexList - a list of indices

map - index-id mapping

Returns:

a list that contain IDs matching the indices contained in the original index-list

idToIndexWeights

public static <K,T,WeightsT extends IWeights<T>> WeightsT idToIndexWeights(Weights<K,T> weights,
                                                                                       IndexIdMap<K> map)

Create a weights view that is accessed by the elements indices, given a weights container that is accessed by the element IDs.

The returned weights container is a view, namely modifying the original container change the new one, and vice versa.

Type Parameters:

K - the element (vertex or edge) identifiers type

T - the weight type

WeightsT - the weights container, used to avoid casts of containers of primitive types such as WeightsInt, WeightsDouble ect. The user should expect WeightsDouble only if a WeightsDouble object was passed as an argument.

Parameters:

weights - a weights container that is accessed by the elements IDs

map - index-id map

Returns:

a weights-view that is accessed by the elements indices

idToIndexWeightFunc

public static <K> IWeightFunction idToIndexWeightFunc(WeightFunction<K> w,
                                                      IndexIdMap<K> map)

Create a weight function that accept elements indices, given a weight function that accept elements IDs.

Type Parameters:

K - the type of elements IDs

Parameters:

w - a weight function that accept by elements IDs

map - index-id map

Returns:

a weight function that accept elements indices

idToIndexWeightFunc

public static <K> IWeightFunctionInt idToIndexWeightFunc(WeightFunctionInt<K> w,
                                                         IndexIdMap<K> map)

Create an integer weight function that accept elements indices, given a weight function that accept elements IDs.

Type Parameters:

K - the type of elements IDs

Parameters:

w - an integer weight function that accept by elements IDs

map - index-id map

Returns:

an integer weight function that accept elements indices