diff options
Diffstat (limited to 'odb-examples/mapping')
| -rw-r--r-- | odb-examples/mapping/README | 79 | ||||
| -rw-r--r-- | odb-examples/mapping/buildfile | 46 | ||||
| -rw-r--r-- | odb-examples/mapping/database.hxx | 95 | ||||
| -rw-r--r-- | odb-examples/mapping/driver.cxx | 65 | ||||
| -rw-r--r-- | odb-examples/mapping/person.hxx | 106 | ||||
| -rw-r--r-- | odb-examples/mapping/testscript | 13 | ||||
| -rw-r--r-- | odb-examples/mapping/traits-mssql.hxx | 85 | ||||
| -rw-r--r-- | odb-examples/mapping/traits-mysql.hxx | 85 | ||||
| -rw-r--r-- | odb-examples/mapping/traits-oracle.hxx | 95 | ||||
| -rw-r--r-- | odb-examples/mapping/traits-pgsql.hxx | 118 | ||||
| -rw-r--r-- | odb-examples/mapping/traits-sqlite.hxx | 127 | ||||
| -rw-r--r-- | odb-examples/mapping/traits.hxx | 23 |
12 files changed, 937 insertions, 0 deletions
diff --git a/odb-examples/mapping/README b/odb-examples/mapping/README new file mode 100644 index 0000000..48bbe4f --- /dev/null +++ b/odb-examples/mapping/README @@ -0,0 +1,79 @@ +This examples shows how to customize the mapping between C++ value types +and database types. The example changes the default mapping for the 'bool' +type which is now stored in the database as the "true" or "false" string. +It also maps the user-defined 'date' type to a suitable database date type. + +The example consists of the following files: + +person.hxx + Header file defining the 'date' value type and the 'person' persistent + class. It also uses the ODB value type pragma to map 'bool' to the + 'VARCHAR(5)' database type and 'date' to the 'DATE' database type. + +traits.hxx +traits-mysql.hxx +traits-sqlite.hxx +traits-pgsql.hxx +traits-oracle.hxx +traits-mssql.hxx + ODB 'value_traits' template specializations for the 'bool' and 'date' + types. These specializations implement conversion between these types + and their database counterparts. + +person-odb.hxx +person-odb.ixx +person-odb.cxx +person.sql + The first three files contain the database support code and the last file + contains the database schema for the person.hxx header. + + These files are generated by the ODB compiler from person.hxx using the + following command line: + + odb --std c++11 -d <database> --generate-query --generate-schema \ + --hxx-prologue "#include \"traits.hxx\"" person.hxx + + Where <database> stands for the database system we are using, for example, + 'pgsql'. + + The --hxx-prologue option included the traits.hxx header at the beginning + of the generated person-odb.hxx file. This makes the 'value_traits' + specializations defined in traits.hxx known to the generated database + support code. + +database.hxx + Contains the create_database() function which instantiates the concrete + database class corresponding to the database system we are using. + +driver.cxx + Driver for the example. It includes the person.hxx and person-odb.hxx + headers to gain access to the persistent classes and their database support + code. It also includes database.hxx for the create_database() function + declaration. + + In main() the driver first calls create_database() to obtain the database + instance. It then persists a number of 'person' objects in the database + and executes a query to find objects matching certain criteria. + +To compile and link the example manually from the command line we can use the +following commands (using PostgreSQL as an example; replace 'c++' with your +C++ compiler name): + +c++ -DDATABASE_PGSQL -c person-odb.cxx +c++ -DDATABASE_PGSQL -c driver.cxx +c++ -o driver driver.o person-odb.o -lodb-pgsql -lodb + +To run the example we may first need to create the database schema (for some +database systems, such as SQLite, the schema is embedded into the generated +code which makes this step unnecessary). Using PostgreSQL as an example, this +can be achieved with the following command: + +psql --username=odb_test --dbname=odb_test -f person.sql + +Here we use 'odb_test' as the database login and also 'odb_test' as the +database name. + +Once the database schema is ready, we can run the example (using PostgreSQL as +the database): + +./driver --user odb_test --database odb_test diff --git a/odb-examples/mapping/buildfile b/odb-examples/mapping/buildfile new file mode 100644 index 0000000..77d7b1a --- /dev/null +++ b/odb-examples/mapping/buildfile @@ -0,0 +1,46 @@ +# file : mapping/buildfile +# license : GNU GPL v2; see accompanying LICENSE file + +import libodb = libodb%lib{odb} + +import libs = libodb-$database%lib{odb-$database} + +exe{driver}: {hxx cxx}{* -person-odb} {hxx ixx cxx}{person-odb} testscript + +# The metadata library target which we use to extract the poptions variable +# value for specifying the preprocessor options (-I, etc) on the ODB compiler +# command line. +# +libue{person-meta}: $libodb + +exe{driver}: libue{person-meta} $libs + +<{hxx ixx cxx}{person-odb}>: hxx{person} libue{person-meta} $odb +{{ + pops = $cxx.lib_poptions($<[1]) + depdb hash $pops + + depdb dyndep --dyn-target --target-what 'generated schema' --format lines \ + -- echo ($sqlite ? '' : "$out_base/person.sql") + + $odb --std c++11 \ + --database $database \ + --generate-schema \ + --generate-query \ + --hxx-prologue '#include "traits.hxx"' \ + --output-dir $out_base \ + --table-prefix mapping_ \ + "-I$src_base" $pops \ + $path($<[0]) +}} + +cxx.poptions =+ "-I$out_base" "-I$src_base" -DDATABASE_$ucase($database) + +# Testscript's run-time prerequisites. +# +# @@ BUILD2: Eventually we should be able to mark it as test.input once +# this is supported for testscript tests. +# +exe{driver}: ../alias{database-client}: include = adhoc + +testscript@./: schema = person diff --git a/odb-examples/mapping/database.hxx b/odb-examples/mapping/database.hxx new file mode 100644 index 0000000..94b4991 --- /dev/null +++ b/odb-examples/mapping/database.hxx @@ -0,0 +1,95 @@ +// file : mapping/database.hxx +// copyright : not copyrighted - public domain + +// +// Create concrete database instance based on the DATABASE_* macros. +// + +#ifndef DATABASE_HXX +#define DATABASE_HXX + +#include <string> +#include <memory> // std::unique_ptr +#include <cstdlib> // std::exit +#include <iostream> + +#include <odb/database.hxx> + +#if defined(DATABASE_MYSQL) +# include <odb/mysql/database.hxx> +#elif defined(DATABASE_SQLITE) +# include <odb/connection.hxx> +# include <odb/transaction.hxx> +# include <odb/schema-catalog.hxx> +# include <odb/sqlite/database.hxx> +#elif defined(DATABASE_PGSQL) +# include <odb/pgsql/database.hxx> +#elif defined(DATABASE_ORACLE) +# include <odb/oracle/database.hxx> +#elif defined(DATABASE_MSSQL) +# include <odb/mssql/database.hxx> +#else +# error unknown database; did you forget to define the DATABASE_* macros? +#endif + +inline std::unique_ptr<odb::database> +create_database (int& argc, char* argv[]) +{ + using namespace std; + using namespace odb::core; + + if (argc > 1 && argv[1] == string ("--help")) + { + cout << "Usage: " << argv[0] << " [options]" << endl + << "Options:" << endl; + +#if defined(DATABASE_MYSQL) + odb::mysql::database::print_usage (cout); +#elif defined(DATABASE_SQLITE) + odb::sqlite::database::print_usage (cout); +#elif defined(DATABASE_PGSQL) + odb::pgsql::database::print_usage (cout); +#elif defined(DATABASE_ORACLE) + odb::oracle::database::print_usage (cout); +#elif defined(DATABASE_MSSQL) + odb::mssql::database::print_usage (cout); +#endif + + exit (0); + } + +#if defined(DATABASE_MYSQL) + unique_ptr<database> db (new odb::mysql::database (argc, argv)); +#elif defined(DATABASE_SQLITE) + unique_ptr<database> db ( + new odb::sqlite::database ( + argc, argv, false, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE)); + + // Create the database schema. Due to bugs in SQLite foreign key + // support for DDL statements, we need to temporarily disable + // foreign keys. + // + { + connection_ptr c (db->connection ()); + + c->execute ("PRAGMA foreign_keys=OFF"); + + transaction t (c->begin ()); + schema_catalog::create_schema (*db); + t.commit (); + + c->execute ("PRAGMA foreign_keys=ON"); + } +#elif defined(DATABASE_PGSQL) + unique_ptr<database> db (new odb::pgsql::database (argc, argv)); +#elif defined(DATABASE_ORACLE) + unique_ptr<database> db (new odb::oracle::database (argc, argv)); +#elif defined(DATABASE_MSSQL) + unique_ptr<database> db ( + new odb::mssql::database (argc, argv, false, "TrustServerCertificate=yes")); +#endif + + return db; +} + +#endif // DATABASE_HXX diff --git a/odb-examples/mapping/driver.cxx b/odb-examples/mapping/driver.cxx new file mode 100644 index 0000000..5e9d067 --- /dev/null +++ b/odb-examples/mapping/driver.cxx @@ -0,0 +1,65 @@ +// file : mapping/driver.cxx +// copyright : not copyrighted - public domain + +#include <memory> // std::unique_ptr +#include <iostream> + +#include <odb/database.hxx> +#include <odb/transaction.hxx> + +#include "database.hxx" // create_database + +#include "person.hxx" +#include "person-odb.hxx" + +using namespace std; +using namespace odb::core; + +int +main (int argc, char* argv[]) +{ + try + { + unique_ptr<database> db (create_database (argc, argv)); + + // Create a few persistent person objects. + // + { + person john ("John", "Doe", date (1978, 10, 13), true); + person jane ("Jane", "Doe", date (1975, 9, 23), false); + person joe ("Joe", "Dirt", date (1973, 12, 3), true); + + transaction t (db->begin ()); + + db->persist (john); + db->persist (jane); + db->persist (joe); + + t.commit (); + } + + // Query for a person using data members of our custom-mapped types. + // + { + typedef odb::query<person> query; + typedef odb::result<person> result; + + transaction t (db->begin ()); + + result r (db->query<person> (query::married && + query::born == date (1978, 10, 13))); + + for (result::iterator i (r.begin ()); i != r.end (); ++i) + { + cout << i->first () << " " << i->last () << " " << i->born () << endl; + } + + t.commit (); + } + } + catch (const odb::exception& e) + { + cerr << e.what () << endl; + return 1; + } +} diff --git a/odb-examples/mapping/person.hxx b/odb-examples/mapping/person.hxx new file mode 100644 index 0000000..c1a43b9 --- /dev/null +++ b/odb-examples/mapping/person.hxx @@ -0,0 +1,106 @@ +// file : mapping/person.hxx +// copyright : not copyrighted - public domain + +#ifndef PERSON_HXX +#define PERSON_HXX + +#include <string> +#include <ostream> + +#include <odb/core.hxx> + +// In our database boolean values are stored as strings with valid +// values being "true" and "false". +// +#pragma db value(bool) type("VARCHAR(5)") + +#pragma db value type("DATE") +class date +{ +public: + date (unsigned int year, unsigned int month, unsigned int day) + : year_ (year), month_ (month), day_ (day) + { + } + + unsigned int + year () const + { + return year_; + } + + unsigned int + month () const + { + return month_; + } + + unsigned int + day () const + { + return day_; + } + +private: + unsigned int year_; + unsigned int month_; + unsigned int day_; +}; + +inline std::ostream& +operator<< (std::ostream& os, const date& d) +{ + return os << d.year () << '-' << d.month () << '-' << d.day (); +} + +#pragma db object +class person +{ +public: + person (const std::string& first, + const std::string& last, + const date& born, + bool married) + : first_ (first), last_ (last), born_ (born), married_ (married) + { + } + + const std::string& + first () const + { + return first_; + } + + const std::string& + last () const + { + return last_; + } + + const date& + born () const + { + return born_; + } + + bool + married () const + { + return married_; + } + +private: + friend class odb::access; + + person (): born_ (0, 0, 0) {} + + #pragma db id auto + unsigned long id_; + + std::string first_; + std::string last_; + date born_; + bool married_; +}; + +#endif // PERSON_HXX diff --git a/odb-examples/mapping/testscript b/odb-examples/mapping/testscript new file mode 100644 index 0000000..f9bac50 --- /dev/null +++ b/odb-examples/mapping/testscript @@ -0,0 +1,13 @@ +# file : mapping/testscript +# license : GNU GPL v2; see accompanying LICENSE file + +.include ../database-options.testscript +.include ../$(database).testscript + ++if! $sqlite + $create_schema +end + +: basics +: +$* >| diff --git a/odb-examples/mapping/traits-mssql.hxx b/odb-examples/mapping/traits-mssql.hxx new file mode 100644 index 0000000..3713f82 --- /dev/null +++ b/odb-examples/mapping/traits-mssql.hxx @@ -0,0 +1,85 @@ +// file : mapping/traits-mssql.hxx +// copyright : not copyrighted - public domain + +#ifndef TRAITS_MSSQL_HXX +#define TRAITS_MSSQL_HXX + +// +// SQL Server implementation. +// + +#include <cstddef> // std::size_t +#include <cstring> // std::strncmp, std::memcpy +#include <cassert> + +#include <odb/mssql/traits.hxx> + +#include "person.hxx" // date + +namespace odb +{ + namespace mssql + { + template <> + class value_traits<bool, id_string> + { + public: + typedef bool value_type; + typedef bool query_type; + typedef char* image_type; + + static void + set_value (bool& v, + const char* b, + std::size_t n, + bool is_null) + { + v = (!is_null && n == 4 && std::strncmp ("true", b, n) == 0); + } + + static void + set_image (char* b, + std::size_t c, + std::size_t& n, + bool& is_null, + bool v) + { + is_null = false; + n = v ? 4 : 5; + + assert (n <= c); + + std::memcpy (b, (v ? "true" : "false"), n); + } + }; + + template <> + class value_traits< ::date, id_date> + { + public: + typedef ::date value_type; + typedef ::date query_type; + typedef mssql::date image_type; + + static void + set_value (value_type& v, const image_type& i, bool is_null) + { + if (!is_null) + v = value_type (static_cast<unsigned int> (i.year), i.month, i.day); + else + v = value_type (0, 0, 0); + } + + static void + set_image (image_type& i, bool& is_null, const value_type& v) + { + is_null = false; + i.year = static_cast<SQLSMALLINT> (v.year ()); + i.month = static_cast<SQLUSMALLINT> (v.month ()); + i.day = static_cast<SQLUSMALLINT> (v.day ()); + } + }; + } +} + +#endif // TRAITS_MSSQL_HXX diff --git a/odb-examples/mapping/traits-mysql.hxx b/odb-examples/mapping/traits-mysql.hxx new file mode 100644 index 0000000..a15d1c9 --- /dev/null +++ b/odb-examples/mapping/traits-mysql.hxx @@ -0,0 +1,85 @@ +// file : mapping/traits-mysql.hxx +// copyright : not copyrighted - public domain + +#ifndef TRAITS_MYSQL_HXX +#define TRAITS_MYSQL_HXX + +// +// MySQL implementation. +// + +#include <cstddef> // std::size_t +#include <cstring> // std::strncmp, std::memcpy + +#include <odb/mysql/traits.hxx> + +#include "person.hxx" // date + +namespace odb +{ + namespace mysql + { + template <> + class value_traits<bool, id_string> + { + public: + typedef bool value_type; + typedef bool query_type; + typedef details::buffer image_type; + + static void + set_value (bool& v, + const details::buffer& b, + std::size_t n, + bool is_null) + { + v = (!is_null && n == 4 && std::strncmp ("true", b.data (), n) == 0); + } + + static void + set_image (details::buffer& b, + std::size_t& n, + bool& is_null, + bool v) + { + is_null = false; + n = v ? 4 : 5; + + if (n > b.capacity ()) + b.capacity (n); + + std::memcpy (b.data (), (v ? "true" : "false"), n); + } + }; + + template <> + class value_traits<date, id_date> + { + public: + typedef date value_type; + typedef date query_type; + typedef MYSQL_TIME image_type; + + static void + set_value (date& v, const MYSQL_TIME& i, bool is_null) + { + if (!is_null) + v = date (i.year, i.month, i.day); + else + v = date (0, 0, 0); + } + + static void + set_image (MYSQL_TIME& i, bool& is_null, const date& v) + { + is_null = false; + i.neg = false; + i.year = v.year (); + i.month = v.month (); + i.day = v.day (); + } + }; + } +} + +#endif // TRAITS_MYSQL_HXX diff --git a/odb-examples/mapping/traits-oracle.hxx b/odb-examples/mapping/traits-oracle.hxx new file mode 100644 index 0000000..a5683c6 --- /dev/null +++ b/odb-examples/mapping/traits-oracle.hxx @@ -0,0 +1,95 @@ +// file : mapping/traits-oracle.hxx +// copyright : not copyrighted - public domain + +#ifndef TRAITS_ORACLE_HXX +#define TRAITS_ORACLE_HXX + +// +// Oracle implementation. +// + +#include <cstddef> // std::size_t +#include <cstring> // std::strncmp, std::memcpy +#include <cassert> + +#include <odb/oracle/traits.hxx> +#include <odb/oracle/details/date.hxx> + +#include "person.hxx" // date + +namespace odb +{ + namespace oracle + { + template <> + class value_traits<bool, id_string> + { + public: + typedef bool value_type; + typedef bool query_type; + typedef char* image_type; + + static void + set_value (bool& v, + const char* b, + std::size_t n, + bool is_null) + { + v = (!is_null && n == 4 && std::strncmp ("true", b, n) == 0); + } + + static void + set_image (char* b, + std::size_t c, + std::size_t& n, + bool& is_null, + bool v) + { + is_null = false; + n = v ? 4 : 5; + + assert (n <= c); + + std::memcpy (b, (v ? "true" : "false"), n); + } + }; + + template <> + class value_traits<date, id_date> + { + public: + typedef date value_type; + typedef date query_type; + typedef char* image_type; + + static void + set_value (date& v, const char* b, bool is_null) + { + if (!is_null) + { + short y; + unsigned char m, d, h, min, s; + details::get_date (b, y, m, d, h, min, s); + + v = date (y, m, d); + } + else + v = date (0, 0, 0); + } + + static void + set_image (char* b, bool& is_null, const date& v) + { + is_null = false; + + short y (static_cast<short> (v.year ())); + unsigned char m (static_cast<unsigned char> (v.month ())); + unsigned char d (static_cast<unsigned char> (v.day ())); + + details::set_date (b, y, m, d, 0, 0, 0); + } + }; + } +} + +#endif // TRAITS_ORACLE_HXX diff --git a/odb-examples/mapping/traits-pgsql.hxx b/odb-examples/mapping/traits-pgsql.hxx new file mode 100644 index 0000000..aeefa52 --- /dev/null +++ b/odb-examples/mapping/traits-pgsql.hxx @@ -0,0 +1,118 @@ +// file : mapping/traits-pgsql.hxx +// copyright : not copyrighted - public domain + +#ifndef TRAITS_PGSQL_HXX +#define TRAITS_PGSQL_HXX + +// +// PostgreSQL implementation. +// + +#include <cstddef> // std::size_t +#include <cstring> // std::strncmp, std::memset, std::memcpy +#include <ctime> // localtime, mktime, time_t, tm + +#include <odb/pgsql/traits.hxx> +#include <odb/pgsql/details/endian-traits.hxx> + +#include "person.hxx" // date + +namespace odb +{ + namespace pgsql + { + template <> + class value_traits<bool, id_string> + { + public: + typedef bool value_type; + typedef bool query_type; + typedef details::buffer image_type; + + static void + set_value (bool& v, + const details::buffer& b, + std::size_t n, + bool is_null) + { + v = (!is_null && n == 4 && std::strncmp ("true", b.data (), n) == 0); + } + + static void + set_image (details::buffer& b, + std::size_t& n, + bool& is_null, + bool v) + { + is_null = false; + n = v ? 4 : 5; + + if (n > b.capacity ()) + b.capacity (n); + + std::memcpy (b.data (), (v ? "true" : "false"), n); + } + }; + + // Mapping of date to PostgreSQL DATE. DATE is stored as the number + // of days since the PostgreSQL epoch 2000-01-01. + // + template <> + class value_traits<date, id_date> + { + public: + typedef date value_type; + typedef date query_type; + typedef int image_type; + + // The difference between the PostgreSQL epoch and the Unix epoch + // in seconds. + // + static const time_t epoch_diff = 946684800; + + static const time_t seconds_per_day = 86400; + + static void + set_value (date& v, const int& i, bool is_null) + { + if (is_null) + { + v = date (0, 0, 0); + return; + } + + time_t v_tt (epoch_diff + + static_cast<time_t> (details::endian_traits::ntoh (i)) * + seconds_per_day); + + // Assume that the date is specified as UTC. Use localtime so as + // to avoid any timeshift that could be introduced by the system + // time locale not being UTC. + // + tm v_tm (*localtime (&v_tt)); + + v = date (v_tm.tm_year + 1900, v_tm.tm_mon + 1, v_tm.tm_mday); + } + + static void + set_image (int& i, bool& is_null, const date& v) + { + is_null = false; + + tm v_tm; + std::memset (&v_tm, 0, sizeof (v_tm)); + + v_tm.tm_mday = v.day (); + v_tm.tm_mon = v.month () - 1; + v_tm.tm_year = v.year () - 1900; + + time_t v_tt (mktime (&v_tm)); + + i = details::endian_traits::hton ( + static_cast<int> ((v_tt - epoch_diff) / seconds_per_day)); + } + }; + } +} + +#endif // TRAITS_PGSQL_HXX diff --git a/odb-examples/mapping/traits-sqlite.hxx b/odb-examples/mapping/traits-sqlite.hxx new file mode 100644 index 0000000..cd7afc3 --- /dev/null +++ b/odb-examples/mapping/traits-sqlite.hxx @@ -0,0 +1,127 @@ +// file : mapping/traits-sqlite.hxx +// copyright : not copyrighted - public domain + +#ifndef TRAITS_SQLITE_HXX +#define TRAITS_SQLITE_HXX + +// +// SQLite implementation. +// + +#include <cstddef> // std::size_t +#include <cstring> // std::strncmp, std::memcpy +#include <sstream> + +#include <odb/sqlite/traits.hxx> + +#include "person.hxx" // date + +namespace odb +{ + namespace sqlite + { + template <> + class value_traits<bool, id_text> + { + public: + typedef bool value_type; + typedef bool query_type; + typedef details::buffer image_type; + + static void + set_value (bool& v, + const details::buffer& b, + std::size_t n, + bool is_null) + { + v = (!is_null && n == 4 && std::strncmp ("true", b.data (), n) == 0); + } + + static void + set_image (details::buffer& b, + std::size_t& n, + bool& is_null, + bool v) + { + is_null = false; + n = v ? 4 : 5; + + if (n > b.capacity ()) + b.capacity (n); + + std::memcpy (b.data (), (v ? "true" : "false"), n); + } + }; + + // In SQLite there is no built-in DATE type. Rather, this type is + // mapped to TEXT in the YYYY-MM-DD format. The below implementation + // doesn't do any error checking for brevity. + // + template <> + class value_traits<date, id_text> + { + public: + typedef date value_type; + typedef date query_type; + typedef details::buffer image_type; + + static void + set_value (date& v, + const details::buffer& b, + std::size_t n, + bool is_null) + { + using namespace std; + + if (!is_null) + { + istringstream is (string (b.data (), n)); + unsigned int y, m, d; + + is >> y; + is.ignore (1); + is >> m; + is.ignore (1); + is >> d; + + v = date (y, m, d); + } + else + v = date (0, 0, 0); + } + + static void + set_image (details::buffer& b, + std::size_t& n, + bool& is_null, + const date& v) + { + using namespace std; + + ostringstream os; + os.fill ('0'); + + os.width (4); + os << v.year () << '-'; + + os.width (2); + os << v.month () << '-'; + + os.width (2); + os << v.day (); + + const string& s (os.str ()); + + is_null = false; + n = s.size (); + + if (n > b.capacity ()) + b.capacity (n); + + memcpy (b.data (), s.c_str (), n); + } + }; + } +} + +#endif // TRAITS_SQLITE_HXX diff --git a/odb-examples/mapping/traits.hxx b/odb-examples/mapping/traits.hxx new file mode 100644 index 0000000..533b2e3 --- /dev/null +++ b/odb-examples/mapping/traits.hxx @@ -0,0 +1,23 @@ +// file : mapping/traits.hxx +// copyright : not copyrighted - public domain + +#ifndef TRAITS_HXX +#define TRAITS_HXX + +// Include one of the database system-specific traits implementations. +// +#if defined(DATABASE_MYSQL) +# include "traits-mysql.hxx" +#elif defined(DATABASE_SQLITE) +# include "traits-sqlite.hxx" +#elif defined(DATABASE_PGSQL) +# include "traits-pgsql.hxx" +#elif defined(DATABASE_ORACLE) +# include "traits-oracle.hxx" +#elif defined(DATABASE_MSSQL) +# include "traits-mssql.hxx" +#else +# error unknown database; did you forget to define the DATABASE_* macros? +#endif + +#endif // TRAITS_HXX |