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+ sqlite.input: whitespace fix

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+ occi.input: added table_from_sql to allow specify SELECT statements in table parameter
+ occi.input: added use_spatial_index parameter (on by default)
+ occi.input: improved determination of query columns type
This commit is contained in:
Lucio Asnaghi 2009-02-24 09:58:31 +00:00
parent 9b4b249555
commit af3fa7dc76
3 changed files with 163 additions and 86 deletions
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129
plugins/input/occi/occi_datasource.cpp
View file

@ -28,6 +28,7 @@
#include <mapnik/ptree_helpers.hpp>
// boost
#include <boost/algorithm/string.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/tokenizer.hpp>
@ -64,9 +65,32 @@ using oracle::occi::SQLException;
using oracle::occi::Type;
using oracle::occi::StatelessConnectionPool;
DATASOURCE_PLUGIN(occi_datasource)
std::string table_from_sql(std::string const& sql)
{
std::string table_name = boost::algorithm::to_lower_copy(sql);
boost::algorithm::replace_all(table_name,"\n"," ");
std::string::size_type idx = table_name.rfind("from");
if (idx!=std::string::npos)
{
idx=table_name.find_first_not_of(" ",idx+4);
if (idx != std::string::npos)
{
table_name=table_name.substr(idx);
}
idx=table_name.find_first_of(" ),");
if (idx != std::string::npos)
{
table_name = table_name.substr(0,idx);
}
}
return table_name;
}
occi_datasource::occi_datasource(parameters const& params)
: datasource (params),
table_(*params.get<std::string>("table","")),
@ -80,6 +104,7 @@ occi_datasource::occi_datasource(parameters const& params)
boost::optional<int> max_size = params_.get<int>("max_size",10);
multiple_geometries_ = *params_.get<mapnik::boolean>("multiple_geometries",false);
use_spatial_index_ = *params_.get<mapnik::boolean>("use_spatial_index",true);
boost::optional<std::string> ext = params_.get<std::string>("extent");
if (ext)
@ -134,13 +159,15 @@ occi_datasource::occi_datasource(parameters const& params)
throw datasource_exception(ex.getMessage());
}
std::string table_name = table_from_sql(table_);
// get SRID from geometry metadata
{
occi_connection_ptr conn (pool_);
std::ostringstream s;
s << "select srid from " << SDO_GEOMETRY_METADATA_TABLE << " where";
s << " lower(table_name) = lower('" << table_ << "') and";
s << " lower(table_name) = lower('" << table_name << "') and";
s << " lower(column_name) = lower('" << geometry_field_ << "')";
try
@ -157,10 +184,20 @@ occi_datasource::occi_datasource(parameters const& params)
}
}
// get table metadata
// get columns description
{
std::string::size_type idx = table_.find(table_name);
std::ostringstream s;
s << "select * from (" << table_.substr(0,idx + table_name.length()) << ") where rownum < 1";
occi_connection_ptr conn (pool_);
MetaData metadata = (*conn)->getMetaData(table_.c_str(), MetaData::PTYPE_TABLE);
vector<MetaData> listOfColumns = metadata.getVector(MetaData::ATTR_LIST_COLUMNS);
try
{
ResultSet* rs = conn.execute_query (s.str());
if (rs)
{
std::vector<MetaData> listOfColumns = rs->getColumnListMetaData();
for (unsigned int i=0;i<listOfColumns.size();++i)
{
@ -225,6 +262,13 @@ occi_datasource::occi_datasource(parameters const& params)
}
}
}
}
catch (SQLException &ex)
{
throw datasource_exception(ex.getMessage());
}
}
}
occi_datasource::~occi_datasource()
{
@ -285,14 +329,15 @@ Envelope<double> occi_datasource::envelope() const
throw datasource_exception(ex.getMessage());
}
}
else
else if (use_spatial_index_)
{
std::string table_name = table_from_sql(table_);
{
std::ostringstream s;
s << "select dim.sdo_lb as lx, dim.sdo_ub as ux from ";
s << SDO_GEOMETRY_METADATA_TABLE << " m, table(m.diminfo) dim ";
s << " where lower(m.table_name) = '" << table_ << "' and dim.sdo_dimname = 'X'";
s << " where lower(m.table_name) = '" << table_name << "' and dim.sdo_dimname = 'X'";
try
{
@ -320,7 +365,7 @@ Envelope<double> occi_datasource::envelope() const
std::ostringstream s;
s << "select dim.sdo_lb as ly, dim.sdo_ub as uy from ";
s << SDO_GEOMETRY_METADATA_TABLE << " m, table(m.diminfo) dim ";
s << " where lower(m.table_name) = '" << table_ << "' and dim.sdo_dimname = 'Y'";
s << " where lower(m.table_name) = '" << table_name << "' and dim.sdo_dimname = 'Y'";
try
{
@ -372,13 +417,34 @@ featureset_ptr occi_datasource::features(query const& q) const
s <<",\""<<*pos<<"\"";
++pos;
}
s << " from " << table_ << " where sdo_filter(" << geometry_field_ << ",";
s << " mdsys.sdo_geometry(" << SDO_GTYPE_2DPOLYGON << "," << srid_ << ",NULL,";
s << " mdsys.sdo_elem_info_array(1," << SDO_ETYPE_POLYGON << "," << SDO_INTERPRETATION_RECTANGLE << "),";
s << " mdsys.sdo_ordinate_array(";
s << std::setprecision(16);
s << box.minx() << "," << box.miny() << ", ";
s << box.maxx() << "," << box.maxy() << ")), 'querytype=WINDOW') = 'TRUE'";
s << " from ";
std::string query (table_);
if (use_spatial_index_)
{
std::string table_name = table_from_sql(query);
std::ostringstream spatial_sql;
spatial_sql << std::setprecision(16);
spatial_sql << " where sdo_filter(" << geometry_field_ << ",";
spatial_sql << " mdsys.sdo_geometry(" << SDO_GTYPE_2DPOLYGON << "," << srid_ << ",NULL,";
spatial_sql << " mdsys.sdo_elem_info_array(1," << SDO_ETYPE_POLYGON << "," << SDO_INTERPRETATION_RECTANGLE << "),";
spatial_sql << " mdsys.sdo_ordinate_array(";
spatial_sql << box.minx() << "," << box.miny() << ", ";
spatial_sql << box.maxx() << "," << box.maxy() << ")), 'querytype=WINDOW') = 'TRUE'";
if (boost::algorithm::ifind_first(query,"where"))
{
boost::algorithm::ireplace_first(query, "where", spatial_sql.str() + " and");
}
else if (boost::algorithm::find_first(query,table_name))
{
boost::algorithm::ireplace_first(query, table_name , table_name + " " + spatial_sql.str());
}
}
s << query;
#ifdef MAPNIK_DEBUG
clog << s.str() << endl;
@ -396,7 +462,6 @@ featureset_ptr occi_datasource::features_at_point(coord2d const& pt) const
{
std::ostringstream s;
s << "select " << geometry_field_ << " as geom";
std::vector<attribute_descriptor>::const_iterator itr = desc_.get_descriptors().begin();
std::vector<attribute_descriptor>::const_iterator end = desc_.get_descriptors().end();
unsigned size=0;
@ -406,18 +471,30 @@ featureset_ptr occi_datasource::features_at_point(coord2d const& pt) const
++itr;
++size;
}
s << " from " << table_<<" where "<<geometryColumn_<<" && setSRID('BOX3D(";
s << std::setprecision(16);
s << pt.x << " " << pt.y << ",";
s << pt.x << " " << pt.y << ")'::box3d,"<<srid_<<")";
s << " from ";
s << " from " << table_ << " where sdo_filter(" << geometry_field_ << ",";
s << " mdsys.sdo_geometry(" << SDO_GTYPE_2DPOINT << "," << srid_ << ",NULL,";
s << " mdsys.sdo_elem_info_array(1," << SDO_ETYPE_POINT << "," << SDO_INTERPRETATION_POINT << "),";
s << " mdsys.sdo_ordinate_array(";
s << std::setprecision(16);
s << pt.x << "," << pt.y << ")), 'querytype=WINDOW') = 'TRUE'";
std::string query (table_);
std::string table_name = table_from_sql(query);
std::ostringstream spatial_sql;
spatial_sql << std::setprecision(16);
spatial_sql << " where sdo_filter(" << geometry_field_ << ",";
spatial_sql << " mdsys.sdo_geometry(" << SDO_GTYPE_2DPOINT << "," << srid_ << ",NULL,";
spatial_sql << " mdsys.sdo_elem_info_array(1," << SDO_ETYPE_POINT << "," << SDO_INTERPRETATION_POINT << "),";
spatial_sql << " mdsys.sdo_ordinate_array(";
spatial_sql << pt.x << "," << pt.y << ")), 'querytype=WINDOW') = 'TRUE'";
if (boost::algorithm::ifind_first(query,"where"))
{
boost::algorithm::ireplace_first(query, "where", spatial_sql.str() + " and");
}
else if (boost::algorithm::find_first(query,table_name))
{
boost::algorithm::ireplace_first(query, table_name , table_name + " " + spatial_sql.str());
}
s << query;
#ifdef MAPNIK_DEBUG
clog << s.str() << endl;

1
plugins/input/occi/occi_datasource.hpp
View file

@ -61,6 +61,7 @@ class occi_datasource : public mapnik::datasource
mapnik::layer_descriptor desc_;
oracle::occi::StatelessConnectionPool* pool_;
bool multiple_geometries_;
bool use_spatial_index_;
static const std::string name_;
};

1
plugins/input/sqlite/sqlite_datasource.cpp
View file

@ -292,7 +292,6 @@ featureset_ptr sqlite_datasource::features(query const& q) const
s << query ;
if (row_limit_ > 0) {
s << " limit " << row_limit_;
}