de.topobyte.osm4j.utils.sort

Class MemorySortIterator

java.lang.Object

de.topobyte.osm4j.utils.sort.MemorySortIterator

All Implemented Interfaces:

OsmIterator, Iterable<EntityContainer>, Iterator<EntityContainer>

public class MemorySortIterator
extends Object
implements OsmIterator

Constructor Summary

Constructors

Constructor and Description
MemorySortIterator(OsmIterator input) Sort the elements from a OSM input source by their id in memory and provide them as a single OSM input source in that order.
MemorySortIterator(OsmIterator input, Comparator<? super OsmNode> comparatorNodes, Comparator<? super OsmWay> comparatorWays, Comparator<? super OsmRelation> comparatorRelations) Sort the elements from a OSM input source by their id in memory and provide them as a single OSM input source in that order.
MemorySortIterator(OsmIterator input, Comparator<OsmEntity> comparator) Sort the elements from a OSM input source by their id in memory and provide them as a single OSM input source in that order.

Method Summary

Modifier and Type	Method and Description
OsmBounds	getBounds()
boolean	hasBounds()
boolean	hasNext()
boolean	isIgnoreDuplicates() Whether objects that have the same type and id as a previously encountered element will be discarded from output.
Iterator<EntityContainer>	iterator()
EntityContainer	next()
void	remove()
void	setIgnoreDuplicates(boolean ignoreDuplicates) When set to false, elements with the same id can appear multiple times in the output.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Detail

MemorySortIterator

public MemorySortIterator(OsmIterator input)

Sort the elements from a OSM input source by their id in memory and provide them as a single OSM input source in that order. Sorting is applied to elements of the same type, i.e. the output contains first nodes, then ways and then relations, each list of elements ordered by the elements' ids.

Parameters:

input - an OsmIterator to retrieve data from.

MemorySortIterator

public MemorySortIterator(OsmIterator input,
                          Comparator<OsmEntity> comparator)

Sort the elements from a OSM input source by their id in memory and provide them as a single OSM input source in that order. Sorting is applied to elements of the same type, i.e. the output contains first nodes, then ways and then relations, each list of elements sorted using the comparator.

Parameters:

input - an OsmIterator to retrieve data from.

comparator - a Comparator used to sort each list of elements.

MemorySortIterator

public MemorySortIterator(OsmIterator input,
                          Comparator<? super OsmNode> comparatorNodes,
                          Comparator<? super OsmWay> comparatorWays,
                          Comparator<? super OsmRelation> comparatorRelations)

Sort the elements from a OSM input source by their id in memory and provide them as a single OSM input source in that order. Sorting is applied to elements of the same type, i.e. the output contains first nodes, then ways and then relations, each list of elements sorted using the respective comparator.

Parameters:

input - an OsmIterator to retrieve data from.

comparatorNodes - a Comparator used to sort the list of nodes.

comparatorWays - a Comparator used to sort the list of ways.

comparatorRelations - a Comparator used to sort the list of relations.

Method Detail

isIgnoreDuplicates

public boolean isIgnoreDuplicates()

Whether objects that have the same type and id as a previously encountered element will be discarded from output.

setIgnoreDuplicates

public void setIgnoreDuplicates(boolean ignoreDuplicates)

When set to false, elements with the same id can appear multiple times in the output. When set to true, for each entity type, if there are multiple objects with the same id, only the first one will be passed to the output. Default value: true.

iterator

public Iterator<EntityContainer> iterator()

Specified by:

iterator in interface Iterable<EntityContainer>

remove

public void remove()

Specified by:

remove in interface Iterator<EntityContainer>

hasBounds

public boolean hasBounds()

Specified by:

hasBounds in interface OsmIterator

getBounds

public OsmBounds getBounds()

Specified by:

getBounds in interface OsmIterator

hasNext

public boolean hasNext()

Specified by:

hasNext in interface Iterator<EntityContainer>

next

public EntityContainer next()

Specified by:

next in interface Iterator<EntityContainer>