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+ refactor attribute validating

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+ fix context in feature_at_point
This commit is contained in:
Artem Pavlenko 2012-01-20 12:29:17 -05:00
parent e49fcb83b1
commit 07a1b420cc
1 changed files with 52 additions and 38 deletions
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70
plugins/input/ogr/ogr_datasource.cpp
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@ -429,36 +429,24 @@ layer_descriptor ogr_datasource::get_descriptor() const
return desc_; return desc_;
} }
featureset_ptr ogr_datasource::features(query const& q) const void validate_attribute_names(query const& q, std::vector<attribute_descriptor> const& names )
{ {
if (! is_bound_) bind(); std::set<std::string> const& attribute_names = q.property_names();
if (dataset_ && layer_.is_valid())
{
// First we validate query fields: https://github.com/mapnik/mapnik/issues/792
std::vector<attribute_descriptor> const& desc_ar = desc_.get_descriptors();
std::vector<attribute_descriptor>::const_iterator it = desc_ar.begin();
std::vector<attribute_descriptor>::const_iterator end = desc_ar.end();
std::vector<std::string> known_fields;
mapnik::context_ptr ctx = boost::make_shared<mapnik::context_type>();
for (; it != end; ++it)
{
known_fields.push_back(it->get_name());
ctx->push(it->get_name());
}
const std::set<std::string>& attribute_names = q.property_names();
std::set<std::string>::const_iterator pos = attribute_names.begin(); std::set<std::string>::const_iterator pos = attribute_names.begin();
std::set<std::string>::const_iterator end_names = attribute_names.end();
while (pos != attribute_names.end()) for ( ;pos != end_names; ++pos)
{ {
bool found_name = false; bool found_name = false;
for (int i = 0; i < known_fields.size(); ++i)
std::vector<attribute_descriptor>::const_iterator itr = names.begin();
std::vector<attribute_descriptor>::const_iterator end = names.end();
for (; itr!=end; ++itr)
{ {
if (known_fields[i] == *pos) if (itr->get_name() == *pos)
{ {
found_name = true; found_name = true;
break; break;
} }
} }
@ -466,15 +454,36 @@ featureset_ptr ogr_datasource::features(query const& q) const
if (! found_name) if (! found_name)
{ {
std::ostringstream s; std::ostringstream s;
std::vector<attribute_descriptor>::const_iterator itr = names.begin();
s << "OGR Plugin: no attribute '" << *pos << "'. Valid attributes are: " std::vector<attribute_descriptor>::const_iterator end = names.end();
<< boost::algorithm::join(known_fields, ",") << "."; s << "OGR Plugin: no attribute '" << *pos << "'. Valid attributes are: ";
for ( ;itr!=end;++itr)
{
s << itr->get_name() << std::endl;
}
throw mapnik::datasource_exception(s.str()); throw mapnik::datasource_exception(s.str());
} }
++pos; }
} }
featureset_ptr ogr_datasource::features(query const& q) const
{
if (! is_bound_) bind();
if (dataset_ && layer_.is_valid())
{
// First we validate query fields: https://github.com/mapnik/mapnik/issues/792
std::vector<attribute_descriptor> const& desc_ar = desc_.get_descriptors();
// feature context (schema)
mapnik::context_ptr ctx = boost::make_shared<mapnik::context_type>();
std::vector<attribute_descriptor>::const_iterator itr = desc_ar.begin();
std::vector<attribute_descriptor>::const_iterator end = desc_ar.end();
for (; itr!=end; ++itr) ctx->push(itr->get_name()); // TODO only push query attributes
validate_attribute_names(q, desc_ar);
OGRLayer* layer = layer_.layer(); OGRLayer* layer = layer_.layer();
@ -510,8 +519,13 @@ featureset_ptr ogr_datasource::features_at_point(coord2d const& pt) const
if (dataset_ && layer_.is_valid()) if (dataset_ && layer_.is_valid())
{ {
std::vector<attribute_descriptor> const& desc_ar = desc_.get_descriptors();
// feature context (schema)
mapnik::context_ptr ctx = boost::make_shared<mapnik::context_type>(); mapnik::context_ptr ctx = boost::make_shared<mapnik::context_type>();
// TODO : push all attribute names here
std::vector<attribute_descriptor>::const_iterator itr = desc_ar.begin();
std::vector<attribute_descriptor>::const_iterator end = desc_ar.end();
for (; itr!=end; ++itr) ctx->push(itr->get_name());
OGRLayer* layer = layer_.layer(); OGRLayer* layer = layer_.layer();