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Throw in OSM datasource if not all parameters are specified but bind is requested.

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This commit is contained in:
Hermann Kraus 2012-03-20 23:02:19 +01:00
parent eb911deca5
commit bd9fe739e5
1 changed files with 27 additions and 33 deletions
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60
plugins/input/osm/osm_datasource.cpp
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@ -52,6 +52,7 @@ DATASOURCE_PLUGIN(osm_datasource)
osm_datasource::osm_datasource(const parameters& params, bool bind)
: datasource (params),
extent_(),
type_(datasource::Vector),
desc_(*params_.get<std::string>("type"), *params_.get<std::string>("encoding", "utf-8"))
{
@ -71,13 +72,11 @@ void osm_datasource::bind() const
std::string url = *params_.get<std::string>("url", "");
std::string bbox = *params_.get<std::string>("bbox", "");
bool do_process = false;
// load the data
// if we supplied a filename, load from file
if (url != "" && bbox != "")
{
// otherwise if we supplied a url and a bounding box, load from the url
// if we supplied a url and a bounding box, load from the url
#ifdef MAPNIK_DEBUG
std::clog << "Osm Plugin: loading_from_url: url=" << url << " bbox=" << bbox << std::endl;
#endif
@ -85,44 +84,40 @@ void osm_datasource::bind() const
{
throw datasource_exception("Error loading from URL");
}
do_process = true;
}
else if (osm_filename != "")
{
if ((osm_data_= dataset_deliverer::load_from_file(osm_filename, parser)) == NULL)
// if we supplied a filename, load from file
if ((osm_data_ = dataset_deliverer::load_from_file(osm_filename, parser)) == NULL)
{
std::ostringstream s;
s << "OSM Plugin: Error loading from file '" << osm_filename << "'";
throw datasource_exception(s.str());
}
do_process = true;
} else {
throw datasource_exception("OSM Plugin: Neither 'file' nor 'url' and 'bbox' specified");
}
if (do_process == true)
osm_tag_types tagtypes;
tagtypes.add_type("maxspeed", mapnik::Integer);
tagtypes.add_type("z_order", mapnik::Integer);
osm_data_->rewind();
// Need code to get the attributes of all the data
std::set<std::string> keys = osm_data_->get_keys();
// Add the attributes to the datasource descriptor - assume they are
// all of type String
for (std::set<std::string>::iterator i = keys.begin(); i != keys.end(); i++)
{
osm_tag_types tagtypes;
tagtypes.add_type("maxspeed", mapnik::Integer);
tagtypes.add_type("z_order", mapnik::Integer);
osm_data_->rewind();
// Need code to get the attributes of all the data
std::set<std::string> keys = osm_data_->get_keys();
// Add the attributes to the datasource descriptor - assume they are
// all of type String
for (std::set<std::string>::iterator i = keys.begin(); i != keys.end(); i++)
{
desc_.add_descriptor(attribute_descriptor(*i, tagtypes.get_type(*i)));
}
// Get the bounds of the data and set extent_ accordingly
bounds b = osm_data_->get_bounds();
extent_ = box2d<double>(b.w, b.s, b.e, b.n);
desc_.add_descriptor(attribute_descriptor(*i, tagtypes.get_type(*i)));
}
// Get the bounds of the data and set extent_ accordingly
bounds b = osm_data_->get_bounds();
extent_ = box2d<double>(b.w, b.s, b.e, b.n);
is_bound_ = true;
}
@ -149,7 +144,7 @@ layer_descriptor osm_datasource::get_descriptor() const
featureset_ptr osm_datasource::features(const query& q) const
{
if (! is_bound_) bind();
if (!is_bound_) bind();
filter_in_box filter(q.get_bbox());
// so we need to filter osm features by bbox here...
@ -162,7 +157,7 @@ featureset_ptr osm_datasource::features(const query& q) const
featureset_ptr osm_datasource::features_at_point(coord2d const& pt) const
{
if (! is_bound_) bind();
if (!is_bound_) bind();
filter_at_point filter(pt);
// collect all attribute names
@ -185,8 +180,7 @@ featureset_ptr osm_datasource::features_at_point(coord2d const& pt) const
box2d<double> osm_datasource::envelope() const
{
if (! is_bound_) bind();
if (!is_bound_) bind();
return extent_;
}
@ -194,4 +188,4 @@ boost::optional<mapnik::datasource::geometry_t> osm_datasource::get_geometry_typ
{
if (! is_bound_) bind();
return boost::optional<mapnik::datasource::geometry_t>(mapnik::datasource::Collection);
}
}