/// <summary>
/// Tests a simple relation read/write operation.
/// </summary>
/// <param name="cache"></param>
public void DoOsmDataCacheTestRelation(OsmDataCache cache)
{
Relation relation = Relation.Create(1, new TagsCollection(
Tag.Create("relation", "yes")), RelationMember.Create(1, "something", OsmGeoType.Node));
// test invalid stuff.
Assert.Throws <ArgumentNullException>(() => cache.AddRelation(null));
Assert.Throws <Exception>(() => cache.AddRelation(new Relation()));
Assert.IsNull(cache.GetRelation(relation.Id.Value));
cache.AddRelation(relation);
Assert.IsTrue(cache.ContainsRelation(relation.Id.Value));
Relation readRelation = cache.GetRelation(relation.Id.Value);
Assert.IsNotNull(readRelation);
Assert.AreEqual(1, readRelation.Id.Value);
Assert.IsNotNull(relation.Tags);
Assert.AreEqual(1, relation.Tags.Count);
Assert.AreEqual("yes", relation.Tags["relation"]);
Assert.IsTrue(cache.TryGetRelation(relation.Id.Value, out readRelation));
Assert.IsNotNull(readRelation);
Assert.AreEqual(1, readRelation.Id.Value);
Assert.IsNotNull(relation.Tags);
Assert.AreEqual(1, relation.Tags.Count);
Assert.AreEqual("yes", relation.Tags["relation"]);
Assert.IsTrue(cache.RemoveRelation(relation.Id.Value));
Assert.IsFalse(cache.ContainsRelation(relation.Id.Value));
Assert.IsFalse(cache.RemoveRelation(relation.Id.Value));
}
/// <summary>
/// Reports that the relation with the given id was used.
/// </summary>
/// <param name="relationId"></param>
private void ReportRelationUsage(long relationId)
{
int relationCount;
if (_relationsUsedTwiceOrMore.TryGetValue(relationId, out relationCount))
{ // relation is used twice or more.
relationCount--;
if (relationCount > 0)
{ // update count.
_relationsUsedTwiceOrMore[relationId] = relationCount;
}
else
{ // remove twice or more.
_relationsUsedTwiceOrMore.Remove(relationId);
}
}
else
{ // the relation was used for the last time.
Relation relation = _dataCache.GetRelation(relationId); // get relation before it is removed.
_dataCache.RemoveRelation(relationId); // remove relation.
_relationsToInclude.Remove(relationId); // remove from the to-include list.
//if (relation.Members != null)
//{ // also report usage to the members.
// foreach (RelationMember member in relation.Members)
// {
// switch (member.MemberType.Value)
// {
// case OsmGeoType.Node:
// this.ReportNodeUsage(member.MemberId.Value);
// break;
// case OsmGeoType.Way:
// this.ReportWayUsage(member.MemberId.Value);
// break;
// case OsmGeoType.Relation:
// this.ReportRelationUsage(member.MemberId.Value);
// break;
// }
// }
//}
}
}