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sqlite: proper cleanup if rtree index creation fails

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This commit is contained in:
Dane Springmeyer 2011-11-09 17:44:50 -08:00
parent 3b554ca308
commit 3ed640a15f
1 changed files with 75 additions and 42 deletions
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115
plugins/input/sqlite/sqlite_utils.hpp
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@ -37,6 +37,7 @@
#include <boost/make_shared.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/filesystem/operations.hpp>
// sqlite
extern "C" {
@ -130,16 +131,17 @@ public:
int flags;
#endif
bool existed = boost::filesystem::exists(index_db);
boost::shared_ptr<sqlite_connection> ds = boost::make_shared<sqlite_connection>(index_db,flags);
ds->execute("PRAGMA synchronous=OFF");
ds->execute("BEGIN TRANSACTION");
// first drop the index if it already exists
std::ostringstream spatial_index_drop_sql;
spatial_index_drop_sql << "DROP TABLE IF EXISTS " << index_table;
ds->execute(spatial_index_drop_sql.str());
ds->execute("PRAGMA synchronous=OFF");
ds->execute("BEGIN TRANSACTION");
// create the spatial index
std::ostringstream create_idx;
create_idx << "create virtual table "
@ -156,60 +158,91 @@ public:
prepared_index_statement ps(ds,insert_idx.str());
bool first = true;
while (rs->is_valid() && rs->step_next())
bool one_success = false;
try
{
int size;
const char* data = (const char*) rs->column_blob(0, size);
if (data)
bool first = true;
while (rs->is_valid() && rs->step_next())
{
boost::ptr_vector<mapnik::geometry_type> paths;
// TODO - contraint fails if multiple_geometries = true
bool multiple_geometries = false;
mapnik::geometry_utils::from_wkb(paths, data, size, multiple_geometries, mapnik::wkbAuto);
for (unsigned i=0; i<paths.size(); ++i)
int size;
const char* data = (const char*) rs->column_blob(0, size);
if (data)
{
mapnik::box2d<double> const& bbox = paths[i].envelope();
if (bbox.valid())
boost::ptr_vector<mapnik::geometry_type> paths;
// TODO - contraint fails if multiple_geometries = true
bool multiple_geometries = false;
mapnik::geometry_utils::from_wkb(paths, data, size, multiple_geometries, mapnik::wkbAuto);
for (unsigned i=0; i<paths.size(); ++i)
{
if (first)
mapnik::box2d<double> const& bbox = paths[i].envelope();
if (bbox.valid())
{
first = false;
extent = bbox;
if (first)
{
first = false;
extent = bbox;
}
else
{
extent.expand_to_include(bbox);
}
ps.bind(bbox);
const int type_oid = rs->column_type(1);
if (type_oid != SQLITE_INTEGER)
{
std::ostringstream error_msg;
error_msg << "Sqlite Plugin: invalid type for key field '"
<< rs->column_name(1) << "' when creating index '" << index_table
<< "' type was: " << type_oid << "";
throw mapnik::datasource_exception(error_msg.str());
}
const sqlite_int64 pkid = rs->column_integer64(1);
ps.bind(pkid);
}
else
{
extent.expand_to_include(bbox);
}
ps.bind(bbox);
const int type_oid = rs->column_type(1);
if (type_oid != SQLITE_INTEGER)
{
std::ostringstream error_msg;
error_msg << "Sqlite Plugin: invalid type for key field '"
<< rs->column_name(1) << "' when creating index '" << index_table
<< "' type was: " << type_oid << "";
error_msg << "SQLite Plugin: encountered invalid bbox at '"
<< rs->column_name(1) << "' == " << rs->column_integer64(1);
throw mapnik::datasource_exception(error_msg.str());
}
const sqlite_int64 pkid = rs->column_integer64(1);
ps.bind(pkid);
ps.step_next();
one_success = true;
}
else
{
std::ostringstream error_msg;
error_msg << "SQLite Plugin: encountered invalid bbox at '"
<< rs->column_name(1) << "' == " << rs->column_integer64(1);
throw mapnik::datasource_exception(error_msg.str());
}
ps.step_next();
}
}
}
ds->execute("COMMIT");
catch (mapnik::datasource_exception const& ex)
{
ds->execute("ROLLBACK");
if (!existed)
{
try
{
boost::filesystem::remove(index_db);
}
catch (...) {};
}
throw mapnik::datasource_exception(ex.what());
}
if (one_success)
{
ds->execute("COMMIT");
}
else if (!existed)
{
ds->execute("ROLLBACK");
try
{
boost::filesystem::remove(index_db);
}
catch (...) {};
}
}
static bool detect_extent(boost::shared_ptr<sqlite_connection> ds,