org.mapsforge.map.writer.util

Class OSMUtils

java.lang.Object

org.mapsforge.map.writer.util.OSMUtils

public final class OSMUtils
extends java.lang.Object

OpenStreetMap related utility methods.

Method Summary

Modifier and Type	Method and Description
static short[]	extractKnownPOITags(org.openstreetmap.osmosis.core.domain.v0_6.Entity entity) Extracts known POI tags and returns their ids.
static short[]	extractKnownWayTags(org.openstreetmap.osmosis.core.domain.v0_6.Entity entity) Extracts known way tags and returns their ids.
static SpecialTagExtractionResult	extractSpecialFields(org.openstreetmap.osmosis.core.domain.v0_6.Entity entity, java.util.List<java.lang.String> preferredLanguages) Extracts special fields and returns their values as an array of strings.
static boolean	isArea(org.openstreetmap.osmosis.core.domain.v0_6.Way way) Heuristic to determine from attributes if a way is likely to be an area.

Methods inherited from class java.lang.Object

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

Method Detail

extractKnownPOITags

public static short[] extractKnownPOITags(org.openstreetmap.osmosis.core.domain.v0_6.Entity entity)

Extracts known POI tags and returns their ids.

Parameters:

entity - the node

Returns:

the ids of the identified tags

extractKnownWayTags

public static short[] extractKnownWayTags(org.openstreetmap.osmosis.core.domain.v0_6.Entity entity)

Extracts known way tags and returns their ids.

Parameters:

entity - the way

Returns:

the ids of the identified tags

extractSpecialFields

public static SpecialTagExtractionResult extractSpecialFields(org.openstreetmap.osmosis.core.domain.v0_6.Entity entity,
                                                              java.util.List<java.lang.String> preferredLanguages)

Extracts special fields and returns their values as an array of strings.

Use '\r' delimiter among names and '\b' delimiter between each language and name.

Parameters:

entity - the entity

preferredLanguages - the preferred language(s)

Returns:

a string array, [0] = name, [1] = ref, [2} = housenumber, [3] layer, [4] elevation, [5] relationType

isArea

public static boolean isArea(org.openstreetmap.osmosis.core.domain.v0_6.Way way)

Heuristic to determine from attributes if a way is likely to be an area. Precondition for this call is that the first and last node of a way are the same, so that this method should only return false if it is known that the feature should not be an area even if the geometry is a polygon.

Determining what is an area is neigh impossible in OSM, this method inspects tag elements to give a likely answer. See http://wiki.openstreetmap.org/wiki/The_Future_of_Areas and http://wiki.openstreetmap.org/wiki/Way

Parameters:

way - the way (which is assumed to be closed and have enough nodes to be an area)

Returns:

true if tags indicate this is an area, otherwise false.