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Elements

Element

Element is an abstract base class for all elements. It contains several fields that all elements share:

long id
int version
long timestamp
long changeset
int uid
String user

String key
String value

Map<String, String> tags
Member[] members

The first six entries are the meta information of the element, if present. If not present, the values are Long.MIN_VALUE, Integer.MIN_VALUE or null, depending on the type of that entry.

The two strings key and value are the key and value of the block and slice which contains this element.

The tags of the element are provided as a map.

The members array contains the id, role and position of the collections this element is a member of.

Node

Nodes provide the following to fields:

int lon;
int lat;

These two coordinates specify the position of the node. Values are given in WGS84 multiplied by 10,000,000.

Way

Ways provide the following fields:

int[] lon;
int[] lat;

These provide a series of coordinates specifying the way. Values are given in WGS84 multiplied by 10,000,000.

Area

Areas provide the following fields:

int[] lon;
int[] lat;

int[][] holes_lon;
int[][] holes_lat;

The first two items define a closed loop (the first coordinate is not repeated at the end).

The second two items define holes inside the area defined by this loop. Every hole is itself a closed loop (again the first coordinate is not repeated at the end). An area may contain zero holes.

Values are given in WGS84 multiplied by 10,000,000.

Collection

Collections provide only one entry:

SliceDefinition[] defs

The SliceDefinitions define a list of slices in the Oma file (by giving type, boundingbox, key and value) where the members of this collection can be found. If defs is empty, the members might be found in any slice.