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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2011 Artem Pavlenko
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*****************************************************************************/
#include "occi_datasource.hpp"
#include "occi_featureset.hpp"
// mapnik
#include <mapnik/debug.hpp>
#include <mapnik/boolean.hpp>
#include <mapnik/sql_utils.hpp>
#include <mapnik/timer.hpp>
// boost
#include <boost/algorithm/string.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/tokenizer.hpp>
#include <boost/make_shared.hpp>
// stl
#include <string>
#include <algorithm>
#include <set>
#include <sstream>
#include <iomanip>
using boost::lexical_cast;
using boost::bad_lexical_cast;
using mapnik::datasource;
using mapnik::parameters;
using mapnik::query;
using mapnik::featureset_ptr;
using mapnik::layer_descriptor;
using mapnik::attribute_descriptor;
using mapnik::datasource_exception;
using mapnik::box2d;
using mapnik::coord2d;
using oracle::occi::Environment;
using oracle::occi::Connection;
using oracle::occi::Statement;
using oracle::occi::ResultSet;
using oracle::occi::MetaData;
using oracle::occi::SQLException;
using oracle::occi::Type;
using oracle::occi::StatelessConnectionPool;
const std::string occi_datasource::METADATA_TABLE = "USER_SDO_GEOM_METADATA";
DATASOURCE_PLUGIN(occi_datasource)
occi_datasource::occi_datasource(parameters const& params, bool bind)
: datasource (params),
type_(datasource::Vector),
fields_(*params_.get<std::string>("fields", "*")),
geometry_field_(*params_.get<std::string>("geometry_field", "")),
srid_initialized_(false),
extent_initialized_(false),
desc_(*params_.get<std::string>("type"), *params_.get<std::string>("encoding", "utf-8")),
use_wkb_(*params_.get<mapnik::boolean>("use_wkb", false)),
row_limit_(*params_.get<int>("row_limit", 0)),
row_prefetch_(*params_.get<int>("row_prefetch", 100)),
pool_(0),
conn_(0)
{
if (! params_.get<std::string>("user")) throw datasource_exception("OCCI Plugin: no <user> specified");
if (! params_.get<std::string>("password")) throw datasource_exception("OCCI Plugin: no <password> specified");
if (! params_.get<std::string>("host")) throw datasource_exception("OCCI Plugin: no <host> string specified");
boost::optional<std::string> table = params_.get<std::string>("table");
if (! table)
{
throw datasource_exception("OCCI Plugin: no <table> parameter specified");
}
else
{
table_ = *table;
}
use_spatial_index_ = *params_.get<mapnik::boolean>("use_spatial_index",true);
use_connection_pool_ = *params_.get<mapnik::boolean>("use_connection_pool",true);
boost::optional<std::string> ext = params_.get<std::string>("extent");
if (ext) extent_initialized_ = extent_.from_string(*ext);
boost::optional<int> srid = params_.get<int>("srid");
if (srid)
{
srid_ = *srid;
srid_initialized_ = true;
}
if (bind)
{
this->bind();
}
}
occi_datasource::~occi_datasource()
{
if (is_bound_)
{
Environment* env = occi_environment::get_environment();
if (use_connection_pool_)
{
if (pool_ != 0)
{
env->terminateStatelessConnectionPool(pool_, StatelessConnectionPool::SPD_FORCE);
}
}
else
{
if (conn_ != 0)
{
env->terminateConnection(conn_);
}
}
}
}
void occi_datasource::bind() const
{
if (is_bound_) return;
#ifdef MAPNIK_STATS
mapnik::progress_timer __stats__(std::clog, "occi_datasource::bind");
#endif
// connect to environment
if (use_connection_pool_)
{
try
{
Environment* env = occi_environment::get_environment();
pool_ = env->createStatelessConnectionPool(
*params_.get<std::string>("user"),
*params_.get<std::string>("password"),
*params_.get<std::string>("host"),
*params_.get<int>("max_size", 5),
*params_.get<int>("initial_size", 1),
1,
StatelessConnectionPool::HOMOGENEOUS);
}
catch (SQLException& ex)
{
throw datasource_exception("OCCI Plugin: " + ex.getMessage());
}
}
else
{
try
{
Environment* env = occi_environment::get_environment();
conn_ = env->createConnection(
*params_.get<std::string>("user"),
*params_.get<std::string>("password"),
*params_.get<std::string>("host"));
}
catch (SQLException& ex)
{
throw datasource_exception("OCCI Plugin: " + ex.getMessage());
}
}
// extract real table name
table_name_ = mapnik::sql_utils::table_from_sql(table_);
// get SRID and/or GEOMETRY_FIELD from metadata table only if we need to
if (! srid_initialized_ || geometry_field_ == "")
{
#ifdef MAPNIK_STATS
mapnik::progress_timer __stats__(std::clog, "occi_datasource::get_srid_and_geometry_field");
#endif
std::ostringstream s;
s << "SELECT srid, column_name FROM " << METADATA_TABLE << " WHERE";
s << " LOWER(table_name) = LOWER('" << table_name_ << "')";
if (geometry_field_ != "")
{
s << " AND LOWER(column_name) = LOWER('" << geometry_field_ << "')";
}
MAPNIK_LOG_DEBUG(occi) << "occi_datasource: " << s.str();
try
{
occi_connection_ptr conn;
if (use_connection_pool_) conn.set_pool(pool_);
else conn.set_connection(conn_, false);
ResultSet* rs = conn.execute_query(s.str());
if (rs && rs->next ())
{
if (! srid_initialized_)
{
srid_ = rs->getInt(1);
srid_initialized_ = true;
}
if (geometry_field_ == "")
{
geometry_field_ = rs->getString(2);
}
}
}
catch (SQLException& ex)
{
throw datasource_exception("OCCI Plugin: " + ex.getMessage());
}
}
// get columns description
{
#ifdef MAPNIK_STATS
mapnik::progress_timer __stats__(std::clog, "occi_datasource::get_column_description");
#endif
std::ostringstream s;
s << "SELECT " << fields_ << " FROM (" << table_name_ << ") WHERE rownum < 1";
MAPNIK_LOG_DEBUG(occi) << "occi_datasource: " << s.str();
try
{
occi_connection_ptr conn;
if (use_connection_pool_) conn.set_pool(pool_);
else conn.set_connection(conn_, false);
ResultSet* rs = conn.execute_query(s.str());
if (rs)
{
std::vector<MetaData> listOfColumns = rs->getColumnListMetaData();
for (unsigned int i = 0; i < listOfColumns.size(); ++i)
{
MetaData columnObj = listOfColumns[i];
std::string fld_name = columnObj.getString(MetaData::ATTR_NAME);
int type_oid = columnObj.getInt(MetaData::ATTR_DATA_TYPE);
/*
int type_code = columnObj.getInt(MetaData::ATTR_TYPECODE);
if (type_code == OCCI_TYPECODE_OBJECT)
{
desc_.add_descriptor(attribute_descriptor(fld_name,mapnik::Object));
continue;
}
*/
switch (type_oid)
{
case oracle::occi::OCCIBOOL:
case oracle::occi::OCCIINT:
case oracle::occi::OCCIUNSIGNED_INT:
case oracle::occi::OCCIROWID:
desc_.add_descriptor(attribute_descriptor(fld_name,mapnik::Integer));
break;
case oracle::occi::OCCIFLOAT:
case oracle::occi::OCCIBFLOAT:
case oracle::occi::OCCIDOUBLE:
case oracle::occi::OCCIBDOUBLE:
case oracle::occi::OCCINUMBER:
case oracle::occi::OCCI_SQLT_NUM:
desc_.add_descriptor(attribute_descriptor(fld_name,mapnik::Double));
break;
case oracle::occi::OCCICHAR:
case oracle::occi::OCCISTRING:
case oracle::occi::OCCI_SQLT_AFC:
case oracle::occi::OCCI_SQLT_AVC:
case oracle::occi::OCCI_SQLT_CHR:
case oracle::occi::OCCI_SQLT_LVC:
case oracle::occi::OCCI_SQLT_RDD:
case oracle::occi::OCCI_SQLT_STR:
case oracle::occi::OCCI_SQLT_VCS:
case oracle::occi::OCCI_SQLT_VNU:
case oracle::occi::OCCI_SQLT_VBI:
case oracle::occi::OCCI_SQLT_VST:
desc_.add_descriptor(attribute_descriptor(fld_name,mapnik::String));
break;
case oracle::occi::OCCIDATE:
case oracle::occi::OCCITIMESTAMP:
case oracle::occi::OCCIINTERVALDS:
case oracle::occi::OCCIINTERVALYM:
case oracle::occi::OCCI_SQLT_DAT:
case oracle::occi::OCCI_SQLT_DATE:
case oracle::occi::OCCI_SQLT_TIME:
case oracle::occi::OCCI_SQLT_TIME_TZ:
case oracle::occi::OCCI_SQLT_TIMESTAMP:
case oracle::occi::OCCI_SQLT_TIMESTAMP_LTZ:
case oracle::occi::OCCI_SQLT_TIMESTAMP_TZ:
case oracle::occi::OCCI_SQLT_INTERVAL_YM:
case oracle::occi::OCCI_SQLT_INTERVAL_DS:
case oracle::occi::OCCIANYDATA:
case oracle::occi::OCCIBLOB:
case oracle::occi::OCCIBFILE:
case oracle::occi::OCCIBYTES:
case oracle::occi::OCCICLOB:
case oracle::occi::OCCIVECTOR:
case oracle::occi::OCCIMETADATA:
case oracle::occi::OCCIPOBJECT:
case oracle::occi::OCCIREF:
case oracle::occi::OCCIREFANY:
case oracle::occi::OCCISTREAM:
case oracle::occi::OCCICURSOR:
case oracle::occi::OCCI_SQLT_FILE:
case oracle::occi::OCCI_SQLT_CFILE:
case oracle::occi::OCCI_SQLT_REF:
case oracle::occi::OCCI_SQLT_CLOB:
case oracle::occi::OCCI_SQLT_BLOB:
case oracle::occi::OCCI_SQLT_RSET:
MAPNIK_LOG_WARN(occi) << "occi_datasource: Unsupported datatype "
<< occi_enums::resolve_datatype(type_oid)
<< " (type_oid=" << type_oid << ")";
break;
default:
MAPNIK_LOG_WARN(occi) << "occi_datasource: Unknown datatype "
<< "(type_oid=" << type_oid << ")";
break;
}
}
}
}
catch (SQLException& ex)
{
throw datasource_exception(ex.getMessage());
}
}
is_bound_ = true;
}
const char * occi_datasource::name()
{
return "occi";
}
mapnik::datasource::datasource_t occi_datasource::type() const
{
return type_;
}
box2d<double> occi_datasource::envelope() const
{
if (extent_initialized_) return extent_;
if (! is_bound_) bind();
double lox = 0.0, loy = 0.0, hix = 0.0, hiy = 0.0;
boost::optional<mapnik::boolean> estimate_extent =
params_.get<mapnik::boolean>("estimate_extent",false);
if (estimate_extent && *estimate_extent)
{
#ifdef MAPNIK_STATS
mapnik::progress_timer __stats__(std::clog, "occi_datasource::envelope(estimate_extent)");
#endif
std::ostringstream s;
s << "SELECT MIN(c.x), MIN(c.y), MAX(c.x), MAX(c.y) FROM ";
s << " (SELECT SDO_AGGR_MBR(" << geometry_field_ << ") shape FROM " << table_ << ") a, ";
s << " TABLE(SDO_UTIL.GETVERTICES(a.shape)) c";
MAPNIK_LOG_DEBUG(occi) << "occi_datasource: " << s.str();
try
{
occi_connection_ptr conn;
if (use_connection_pool_) conn.set_pool(pool_);
else conn.set_connection(conn_, false);
ResultSet* rs = conn.execute_query(s.str());
if (rs && rs->next())
{
try
{
lox = lexical_cast<double>(rs->getDouble(1));
loy = lexical_cast<double>(rs->getDouble(2));
hix = lexical_cast<double>(rs->getDouble(3));
hiy = lexical_cast<double>(rs->getDouble(4));
extent_.init(lox, loy, hix, hiy);
extent_initialized_ = true;
}
catch (bad_lexical_cast& ex)
{
MAPNIK_LOG_WARN(occi) << "OCCI Plugin: " << ex.what();
}
}
}
catch (SQLException& ex)
{
throw datasource_exception("OCCI Plugin: " + ex.getMessage());
}
}
else if (use_spatial_index_)
{
#ifdef MAPNIK_STATS
mapnik::progress_timer __stats__(std::clog, "occi_datasource::envelope(use_spatial_index)");
#endif
std::ostringstream s;
s << "SELECT dim.sdo_lb, dim.sdo_ub FROM ";
s << METADATA_TABLE << " m, TABLE(m.diminfo) dim ";
s << " WHERE LOWER(m.table_name) = LOWER('" << table_name_ << "') AND dim.sdo_dimname = 'X'";
s << " UNION ";
s << "SELECT dim.sdo_lb, dim.sdo_ub FROM ";
s << METADATA_TABLE << " m, TABLE(m.diminfo) dim ";
s << " WHERE LOWER(m.table_name) = LOWER('" << table_name_ << "') AND dim.sdo_dimname = 'Y'";
MAPNIK_LOG_DEBUG(occi) << "occi_datasource: " << s.str();
try
{
occi_connection_ptr conn;
if (use_connection_pool_) conn.set_pool(pool_);
else conn.set_connection(conn_, false);
ResultSet* rs = conn.execute_query(s.str());
if (rs)
{
if (rs->next())
{
try
{
lox = lexical_cast<double>(rs->getDouble(1));
hix = lexical_cast<double>(rs->getDouble(2));
}
catch (bad_lexical_cast& ex)
{
MAPNIK_LOG_WARN(occi) << "OCCI Plugin: " << ex.what();
}
}
if (rs->next())
{
try
{
loy = lexical_cast<double>(rs->getDouble(1));
hiy = lexical_cast<double>(rs->getDouble(2));
}
catch (bad_lexical_cast& ex)
{
MAPNIK_LOG_WARN(occi) << "OCCI Plugin: " << ex.what();
}
}
extent_.init(lox, loy, hix, hiy);
extent_initialized_ = true;
}
}
catch (SQLException& ex)
{
throw datasource_exception("OCCI Plugin: " + ex.getMessage());
}
}
if (! extent_initialized_)
{
throw datasource_exception("OCCI Plugin: unable to determine the extent of a <occi> table");
}
return extent_;
}
boost::optional<mapnik::datasource::geometry_t> occi_datasource::get_geometry_type() const
{
// FIXME
//if (! is_bound_) bind();
return boost::optional<mapnik::datasource::geometry_t>();
}
layer_descriptor occi_datasource::get_descriptor() const
{
if (! is_bound_) bind();
return desc_;
}
featureset_ptr occi_datasource::features(query const& q) const
{
if (! is_bound_) bind();
#ifdef MAPNIK_STATS
mapnik::progress_timer __stats__(std::clog, "occi_datasource::features");
#endif
box2d<double> const& box = q.get_bbox();
std::ostringstream s;
s << "SELECT ";
if (use_wkb_)
{
s << "SDO_UTIL.TO_WKBGEOMETRY(" << geometry_field_ << ")";
}
else
{
s << geometry_field_;
}
std::set<std::string> const& props = q.property_names();
std::set<std::string>::const_iterator pos = props.begin();
std::set<std::string>::const_iterator end = props.end();
mapnik::context_ptr ctx = boost::make_shared<mapnik::context_type>();
for (; pos != end; ++pos)
{
s << ", " << *pos;
ctx->push(*pos);
}
s << " FROM ";
std::string query(table_);
if (use_spatial_index_)
{
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::ifind_first(query, table_name_))
{
boost::algorithm::ireplace_first(query, table_name_, table_name_ + " " + spatial_sql.str());
}
else
{
MAPNIK_LOG_WARN(occi) << "occi_datasource: cannot determine where to add the spatial filter declaration";
}
}
if (row_limit_ > 0)
{
std::ostringstream row_limit_string;
row_limit_string << "rownum < " << row_limit_;
if (boost::algorithm::ifind_first(query, "WHERE"))
{
boost::algorithm::ireplace_first(query, "WHERE", row_limit_string.str() + " AND ");
}
else if (boost::algorithm::ifind_first(query, table_name_))
{
boost::algorithm::ireplace_first(query, table_name_, table_name_ + " " + row_limit_string.str());
}
else
{
MAPNIK_LOG_WARN(occi) << "occi_datasource: Cannot determine where to add the row limit declaration";
}
}
s << query;
MAPNIK_LOG_DEBUG(occi) << "occi_datasource: " << s.str();
return boost::make_shared<occi_featureset>(pool_,
conn_,
ctx,
s.str(),
desc_.get_encoding(),
use_connection_pool_,
use_wkb_,
row_prefetch_);
}
featureset_ptr occi_datasource::features_at_point(coord2d const& pt, double tol) const
{
if (! is_bound_) bind();
#ifdef MAPNIK_STATS
mapnik::progress_timer __stats__(std::clog, "occi_datasource::features_at_point");
#endif
std::ostringstream s;
s << "SELECT ";
if (use_wkb_)
{
s << "SDO_UTIL.TO_WKBGEOMETRY(" << geometry_field_ << ")";
}
else
{
s << geometry_field_;
}
std::vector<attribute_descriptor>::const_iterator itr = desc_.get_descriptors().begin();
std::vector<attribute_descriptor>::const_iterator end = desc_.get_descriptors().end();
mapnik::context_ptr ctx = boost::make_shared<mapnik::context_type>();
while (itr != end)
{
s << ", " << itr->get_name();
ctx->push(itr->get_name());
++itr;
}
s << " FROM ";
std::string query(table_);
if (use_spatial_index_)
{
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::ifind_first(query, table_name_))
{
boost::algorithm::ireplace_first(query, table_name_, table_name_ + " " + spatial_sql.str());
}
else
{
MAPNIK_LOG_WARN(occi) << "occi_datasource: Cannot determine where to add the spatial filter declaration";
}
}
if (row_limit_ > 0)
{
std::ostringstream row_limit_string;
row_limit_string << "rownum < " << row_limit_;
if (boost::algorithm::ifind_first(query, "WHERE"))
{
boost::algorithm::ireplace_first(query, "WHERE", row_limit_string.str() + " AND ");
}
else if (boost::algorithm::ifind_first(query, table_name_))
{
boost::algorithm::ireplace_first(query, table_name_, table_name_ + " " + row_limit_string.str());
}
else
{
MAPNIK_LOG_WARN(occi) << "occi_datasource: Cannot determine where to add the row limit declaration";
}
}
s << query;
MAPNIK_LOG_DEBUG(occi) << "occi_datasource: " << s.str();
return boost::make_shared<occi_featureset>(pool_,
conn_,
ctx,
s.str(),
desc_.get_encoding(),
use_connection_pool_,
use_wkb_,
row_prefetch_);
}
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