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sqlite: let sqlite automatically rollback if needed to avoid potential rollback against no transaction

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This commit is contained in:
Dane Springmeyer 2011-11-13 19:19:22 -08:00
parent ef69f00867
commit 1653fe0b93
1 changed files with 10 additions and 4 deletions
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14
plugins/input/sqlite/sqlite_utils.hpp
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@ -203,13 +203,21 @@ public:
bool existed = boost::filesystem::exists(index_db);
boost::shared_ptr<sqlite_connection> ds = boost::make_shared<sqlite_connection>(index_db,flags);
bool one_success = false;
try
{
ds->execute("PRAGMA synchronous=OFF");
ds->execute("BEGIN IMMEDIATE TRANSACTION");
/*
ds->execute("PRAGMA journal_mode=WAL");
ds->execute("PRAGMA fullfsync=1");
ds->execute("PRAGMA locking_mode = EXCLUSIVE");
ds->execute("BEGIN EXCLUSIVE 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;
@ -278,7 +286,6 @@ public:
}
catch (mapnik::datasource_exception const& ex)
{
ds->execute("ROLLBACK");
if (!existed)
{
try
@ -297,7 +304,6 @@ public:
}
else if (!existed)
{
ds->execute("ROLLBACK");
try
{
boost::filesystem::remove(index_db);