647 lines
22 KiB
C++
647 lines
22 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2011 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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// $Id$
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#include "occi_datasource.hpp"
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#include "occi_featureset.hpp"
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// mapnik
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#include <mapnik/ptree_helpers.hpp>
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#include <mapnik/sql_utils.hpp>
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// boost
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#include <boost/algorithm/string.hpp>
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#include <boost/lexical_cast.hpp>
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#include <boost/tokenizer.hpp>
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#include <boost/make_shared.hpp>
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// stl
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#include <string>
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#include <algorithm>
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#include <set>
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#include <sstream>
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#include <iomanip>
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using boost::lexical_cast;
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using boost::bad_lexical_cast;
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using mapnik::datasource;
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using mapnik::parameters;
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using mapnik::query;
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using mapnik::featureset_ptr;
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using mapnik::layer_descriptor;
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using mapnik::attribute_descriptor;
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using mapnik::datasource_exception;
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using mapnik::box2d;
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using mapnik::coord2d;
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using oracle::occi::Environment;
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using oracle::occi::Connection;
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using oracle::occi::Statement;
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using oracle::occi::ResultSet;
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using oracle::occi::MetaData;
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using oracle::occi::SQLException;
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using oracle::occi::Type;
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using oracle::occi::StatelessConnectionPool;
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const std::string occi_datasource::METADATA_TABLE = "USER_SDO_GEOM_METADATA";
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DATASOURCE_PLUGIN(occi_datasource)
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occi_datasource::occi_datasource(parameters const& params, bool bind)
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: datasource (params),
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type_(datasource::Vector),
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fields_(*params_.get<std::string>("fields", "*")),
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geometry_field_(*params_.get<std::string>("geometry_field", "")),
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srid_initialized_(false),
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extent_initialized_(false),
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desc_(*params_.get<std::string>("type"), *params_.get<std::string>("encoding", "utf-8")),
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row_limit_(*params_.get<int>("row_limit", 0)),
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row_prefetch_(*params_.get<int>("row_prefetch", 100)),
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pool_(0),
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conn_(0)
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{
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if (! params_.get<std::string>("user")) throw datasource_exception("OCCI Plugin: no <user> specified");
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if (! params_.get<std::string>("password")) throw datasource_exception("OCCI Plugin: no <password> specified");
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if (! params_.get<std::string>("host")) throw datasource_exception("OCCI Plugin: no <host> string specified");
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boost::optional<std::string> table = params_.get<std::string>("table");
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if (! table)
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{
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throw datasource_exception("OCCI Plugin: no <table> parameter specified");
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}
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else
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{
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table_ = *table;
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}
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use_spatial_index_ = *params_.get<mapnik::boolean>("use_spatial_index",true);
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use_connection_pool_ = *params_.get<mapnik::boolean>("use_connection_pool",true);
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boost::optional<std::string> ext = params_.get<std::string>("extent");
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if (ext) extent_initialized_ = extent_.from_string(*ext);
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boost::optional<int> srid = params_.get<int>("srid");
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if (srid)
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{
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srid_ = *srid;
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srid_initialized_ = true;
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}
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if (bind)
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{
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this->bind();
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}
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}
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occi_datasource::~occi_datasource()
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{
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if (is_bound_)
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{
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Environment* env = occi_environment::get_environment();
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if (use_connection_pool_)
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{
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if (pool_ != 0)
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{
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env->terminateStatelessConnectionPool(pool_, StatelessConnectionPool::SPD_FORCE);
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}
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}
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else
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{
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if (conn_ != 0)
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{
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env->terminateConnection(conn_);
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}
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}
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}
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}
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void occi_datasource::bind() const
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{
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if (is_bound_) return;
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// connect to environment
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if (use_connection_pool_)
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{
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try
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{
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Environment* env = occi_environment::get_environment();
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pool_ = env->createStatelessConnectionPool(
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*params_.get<std::string>("user"),
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*params_.get<std::string>("password"),
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*params_.get<std::string>("host"),
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*params_.get<int>("max_size", 10),
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*params_.get<int>("initial_size", 1),
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1,
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StatelessConnectionPool::HOMOGENEOUS);
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}
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catch (SQLException& ex)
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{
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throw datasource_exception("OCCI Plugin: " + ex.getMessage());
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}
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}
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else
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{
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try
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{
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Environment* env = occi_environment::get_environment();
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conn_ = env->createConnection(
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*params_.get<std::string>("user"),
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*params_.get<std::string>("password"),
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*params_.get<std::string>("host"));
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}
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catch (SQLException& ex)
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{
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throw datasource_exception("OCCI Plugin: " + ex.getMessage());
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}
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}
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// extract real table name
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table_name_ = mapnik::sql_utils::table_from_sql(table_);
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// get SRID and/or GEOMETRY_FIELD from metadata table only if we need to
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if (! srid_initialized_ || geometry_field_ == "")
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{
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std::ostringstream s;
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s << "SELECT srid, column_name FROM " << METADATA_TABLE << " WHERE";
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s << " LOWER(table_name) = LOWER('" << table_name_ << "')";
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if (geometry_field_ != "")
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{
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s << " AND LOWER(column_name) = LOWER('" << geometry_field_ << "')";
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}
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#ifdef MAPNIK_DEBUG
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std::clog << "OCCI Plugin: " << s.str() << std::endl;
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#endif
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try
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{
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occi_connection_ptr conn;
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if (use_connection_pool_) conn.set_pool(pool_);
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else conn.set_connection(conn_, false);
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ResultSet* rs = conn.execute_query(s.str());
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if (rs && rs->next ())
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{
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if (! srid_initialized_)
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{
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srid_ = rs->getInt(1);
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srid_initialized_ = true;
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}
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if (geometry_field_ == "")
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{
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geometry_field_ = rs->getString(2);
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}
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}
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}
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catch (SQLException& ex)
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{
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throw datasource_exception("OCCI Plugin: " + ex.getMessage());
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}
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}
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// get columns description
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{
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std::ostringstream s;
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s << "SELECT " << fields_ << " FROM (" << table_name_ << ") WHERE rownum < 1";
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#ifdef MAPNIK_DEBUG
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std::clog << "OCCI Plugin: " << s.str() << std::endl;
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#endif
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try
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{
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occi_connection_ptr conn;
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if (use_connection_pool_) conn.set_pool(pool_);
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else conn.set_connection(conn_, false);
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ResultSet* rs = conn.execute_query(s.str());
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if (rs)
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{
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std::vector<MetaData> listOfColumns = rs->getColumnListMetaData();
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for (unsigned int i = 0; i < listOfColumns.size(); ++i)
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{
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MetaData columnObj = listOfColumns[i];
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std::string fld_name = columnObj.getString(MetaData::ATTR_NAME);
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int type_oid = columnObj.getInt(MetaData::ATTR_DATA_TYPE);
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/*
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int type_code = columnObj.getInt(MetaData::ATTR_TYPECODE);
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if (type_code == OCCI_TYPECODE_OBJECT)
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{
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desc_.add_descriptor(attribute_descriptor(fld_name,mapnik::Object));
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continue;
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}
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*/
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switch (type_oid)
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{
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case oracle::occi::OCCIBOOL:
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case oracle::occi::OCCIINT:
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case oracle::occi::OCCIUNSIGNED_INT:
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case oracle::occi::OCCIROWID:
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desc_.add_descriptor(attribute_descriptor(fld_name,mapnik::Integer));
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break;
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case oracle::occi::OCCIFLOAT:
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case oracle::occi::OCCIBFLOAT:
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case oracle::occi::OCCIDOUBLE:
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case oracle::occi::OCCIBDOUBLE:
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case oracle::occi::OCCINUMBER:
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case oracle::occi::OCCI_SQLT_NUM:
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desc_.add_descriptor(attribute_descriptor(fld_name,mapnik::Double));
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break;
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case oracle::occi::OCCICHAR:
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case oracle::occi::OCCISTRING:
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case oracle::occi::OCCI_SQLT_AFC:
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case oracle::occi::OCCI_SQLT_AVC:
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case oracle::occi::OCCI_SQLT_CHR:
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case oracle::occi::OCCI_SQLT_LVC:
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case oracle::occi::OCCI_SQLT_RDD:
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case oracle::occi::OCCI_SQLT_STR:
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case oracle::occi::OCCI_SQLT_VCS:
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case oracle::occi::OCCI_SQLT_VNU:
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case oracle::occi::OCCI_SQLT_VBI:
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case oracle::occi::OCCI_SQLT_VST:
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desc_.add_descriptor(attribute_descriptor(fld_name,mapnik::String));
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break;
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case oracle::occi::OCCIDATE:
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case oracle::occi::OCCITIMESTAMP:
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case oracle::occi::OCCIINTERVALDS:
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case oracle::occi::OCCIINTERVALYM:
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case oracle::occi::OCCI_SQLT_DAT:
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case oracle::occi::OCCI_SQLT_DATE:
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case oracle::occi::OCCI_SQLT_TIME:
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case oracle::occi::OCCI_SQLT_TIME_TZ:
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case oracle::occi::OCCI_SQLT_TIMESTAMP:
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case oracle::occi::OCCI_SQLT_TIMESTAMP_LTZ:
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case oracle::occi::OCCI_SQLT_TIMESTAMP_TZ:
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case oracle::occi::OCCI_SQLT_INTERVAL_YM:
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case oracle::occi::OCCI_SQLT_INTERVAL_DS:
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case oracle::occi::OCCIANYDATA:
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case oracle::occi::OCCIBLOB:
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case oracle::occi::OCCIBFILE:
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case oracle::occi::OCCIBYTES:
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case oracle::occi::OCCICLOB:
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case oracle::occi::OCCIVECTOR:
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case oracle::occi::OCCIMETADATA:
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case oracle::occi::OCCIPOBJECT:
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case oracle::occi::OCCIREF:
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case oracle::occi::OCCIREFANY:
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case oracle::occi::OCCISTREAM:
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case oracle::occi::OCCICURSOR:
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case oracle::occi::OCCI_SQLT_FILE:
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case oracle::occi::OCCI_SQLT_CFILE:
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case oracle::occi::OCCI_SQLT_REF:
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case oracle::occi::OCCI_SQLT_CLOB:
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case oracle::occi::OCCI_SQLT_BLOB:
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case oracle::occi::OCCI_SQLT_RSET:
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#ifdef MAPNIK_DEBUG
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std::clog << "OCCI Plugin: unsupported datatype "
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<< occi_enums::resolve_datatype(type_oid)
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<< " (type_oid=" << type_oid << ")" << std::endl;
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#endif
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break;
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default:
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#ifdef MAPNIK_DEBUG
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std::clog << "OCCI Plugin: unknown datatype "
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<< "(type_oid=" << type_oid << ")" << std::endl;
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#endif
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break;
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}
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}
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}
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}
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catch (SQLException& ex)
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{
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throw datasource_exception(ex.getMessage());
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}
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}
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is_bound_ = true;
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}
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std::string occi_datasource::name()
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{
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return "occi";
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}
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int occi_datasource::type() const
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{
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return type_;
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}
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box2d<double> occi_datasource::envelope() const
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{
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if (extent_initialized_) return extent_;
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if (! is_bound_) bind();
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double lox = 0.0, loy = 0.0, hix = 0.0, hiy = 0.0;
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boost::optional<mapnik::boolean> estimate_extent =
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params_.get<mapnik::boolean>("estimate_extent",false);
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if (estimate_extent && *estimate_extent)
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{
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std::ostringstream s;
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s << "SELECT MIN(c.x), MIN(c.y), MAX(c.x), MAX(c.y) FROM ";
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s << " (SELECT SDO_AGGR_MBR(" << geometry_field_ << ") shape FROM " << table_ << ") a, ";
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s << " TABLE(SDO_UTIL.GETVERTICES(a.shape)) c";
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#ifdef MAPNIK_DEBUG
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std::clog << "OCCI Plugin: " << s.str() << std::endl;
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#endif
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try
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{
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occi_connection_ptr conn;
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if (use_connection_pool_) conn.set_pool(pool_);
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else conn.set_connection(conn_, false);
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ResultSet* rs = conn.execute_query(s.str());
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if (rs && rs->next())
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{
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try
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{
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lox = lexical_cast<double>(rs->getDouble(1));
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loy = lexical_cast<double>(rs->getDouble(2));
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hix = lexical_cast<double>(rs->getDouble(3));
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hiy = lexical_cast<double>(rs->getDouble(4));
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extent_.init(lox, loy, hix, hiy);
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extent_initialized_ = true;
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}
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catch (bad_lexical_cast& ex)
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{
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std::clog << "OCCI Plugin: " << ex.what() << std::endl;
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}
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}
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}
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catch (SQLException& ex)
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{
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throw datasource_exception("OCCI Plugin: " + ex.getMessage());
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}
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}
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else if (use_spatial_index_)
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{
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std::ostringstream s;
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s << "SELECT dim.sdo_lb, dim.sdo_ub FROM ";
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s << METADATA_TABLE << " m, TABLE(m.diminfo) dim ";
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s << " WHERE LOWER(m.table_name) = LOWER('" << table_name_ << "') AND dim.sdo_dimname = 'X'";
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s << " UNION ";
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s << "SELECT dim.sdo_lb, dim.sdo_ub FROM ";
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s << METADATA_TABLE << " m, TABLE(m.diminfo) dim ";
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s << " WHERE LOWER(m.table_name) = LOWER('" << table_name_ << "') AND dim.sdo_dimname = 'Y'";
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#ifdef MAPNIK_DEBUG
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std::clog << "OCCI Plugin: " << s.str() << std::endl;
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#endif
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try
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{
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occi_connection_ptr conn;
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if (use_connection_pool_) conn.set_pool(pool_);
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else conn.set_connection(conn_, false);
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ResultSet* rs = conn.execute_query(s.str());
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if (rs)
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{
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if (rs->next())
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{
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try
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{
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lox = lexical_cast<double>(rs->getDouble(1));
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hix = lexical_cast<double>(rs->getDouble(2));
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}
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catch (bad_lexical_cast& ex)
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{
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std::clog << "OCCI Plugin: " << ex.what() << std::endl;
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}
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}
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if (rs->next())
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{
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try
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{
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loy = lexical_cast<double>(rs->getDouble(1));
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hiy = lexical_cast<double>(rs->getDouble(2));
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}
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catch (bad_lexical_cast& ex)
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{
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std::clog << "OCCI Plugin: " << ex.what() << std::endl;
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}
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}
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extent_.init(lox, loy, hix, hiy);
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extent_initialized_ = true;
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}
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}
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catch (SQLException& ex)
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{
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throw datasource_exception("OCCI Plugin: " + ex.getMessage());
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}
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}
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if (! extent_initialized_)
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{
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throw datasource_exception("OCCI Plugin: unable to determine the extent of a <occi> table");
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}
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return extent_;
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}
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layer_descriptor occi_datasource::get_descriptor() const
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{
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if (! is_bound_) bind();
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return desc_;
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}
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featureset_ptr occi_datasource::features(query const& q) const
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{
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if (! is_bound_) bind();
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box2d<double> const& box = q.get_bbox();
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std::ostringstream s;
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s << "SELECT " << geometry_field_;
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std::set<std::string> const& props = q.property_names();
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std::set<std::string>::const_iterator pos = props.begin();
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std::set<std::string>::const_iterator end = props.end();
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mapnik::context_ptr ctx = boost::make_shared<mapnik::context>();
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for ( ;pos != end;++pos)
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{
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s << ", " << *pos;
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ctx->push(*pos);
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}
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s << " FROM ";
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std::string query(table_);
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if (use_spatial_index_)
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{
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std::ostringstream spatial_sql;
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spatial_sql << std::setprecision(16);
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spatial_sql << " WHERE SDO_FILTER(" << geometry_field_ << ",";
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spatial_sql << " MDSYS.SDO_GEOMETRY(" << SDO_GTYPE_2DPOLYGON << "," << srid_ << ",NULL,";
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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
|
|
{
|
|
#ifdef MAPNIK_DEBUG
|
|
std::clog << "OCCI Plugin: cannot determine where to add the spatial filter declaration" << std::endl;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
if (row_limit_ > 0)
|
|
{
|
|
std::string row_limit_string = "rownum < " + row_limit_;
|
|
|
|
if (boost::algorithm::ifind_first(query, "WHERE"))
|
|
{
|
|
boost::algorithm::ireplace_first(query, "WHERE", row_limit_string + " AND ");
|
|
}
|
|
else if (boost::algorithm::ifind_first(query, table_name_))
|
|
{
|
|
boost::algorithm::ireplace_first(query, table_name_, table_name_ + " " + row_limit_string);
|
|
}
|
|
else
|
|
{
|
|
#ifdef MAPNIK_DEBUG
|
|
std::clog << "OCCI Plugin: cannot determine where to add the row limit declaration" << std::endl;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
s << query;
|
|
|
|
#ifdef MAPNIK_DEBUG
|
|
std::clog << "OCCI Plugin: " << s.str() << std::endl;
|
|
#endif
|
|
|
|
return boost::make_shared<occi_featureset>(pool_,
|
|
conn_,
|
|
ctx,
|
|
s.str(),
|
|
desc_.get_encoding(),
|
|
use_connection_pool_,
|
|
row_prefetch_);
|
|
}
|
|
|
|
featureset_ptr occi_datasource::features_at_point(coord2d const& pt) const
|
|
{
|
|
if (! is_bound_) bind();
|
|
|
|
std::ostringstream s;
|
|
s << "SELECT " << 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>();
|
|
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
|
|
{
|
|
#ifdef MAPNIK_DEBUG
|
|
std::clog << "OCCI Plugin: cannot determine where to add the spatial filter declaration" << std::endl;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
if (row_limit_ > 0)
|
|
{
|
|
std::string row_limit_string = "rownum < " + row_limit_;
|
|
|
|
if (boost::algorithm::ifind_first(query, "WHERE"))
|
|
{
|
|
boost::algorithm::ireplace_first(query, "WHERE", row_limit_string + " AND ");
|
|
}
|
|
else if (boost::algorithm::ifind_first(query, table_name_))
|
|
{
|
|
boost::algorithm::ireplace_first(query, table_name_, table_name_ + " " + row_limit_string);
|
|
}
|
|
else
|
|
{
|
|
#ifdef MAPNIK_DEBUG
|
|
std::clog << "OCCI Plugin: cannot determine where to add the row limit declaration" << std::endl;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
s << query;
|
|
|
|
#ifdef MAPNIK_DEBUG
|
|
std::clog << "OCCI Plugin: " << s.str() << std::endl;
|
|
#endif
|
|
|
|
return boost::make_shared<occi_featureset>(pool_,
|
|
conn_,
|
|
ctx,
|
|
s.str(),
|
|
desc_.get_encoding(),
|
|
use_connection_pool_,
|
|
row_prefetch_);
|
|
}
|