diff options
author | Boris Kolpackov <boris@codesynthesis.com> | 2011-10-24 16:32:51 +0200 |
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committer | Boris Kolpackov <boris@codesynthesis.com> | 2011-10-24 16:32:51 +0200 |
commit | 08a47c70ad517b80b72914d47d547463f576bcd3 (patch) | |
tree | 8a6ab07cf05e8668ea3c91735dfe97e2a98f3f05 /odb/relational/sqlite/model.cxx | |
parent | a976183dc95a8b7a9bd7a308c3ea94f08982c426 (diff) |
Generate database schema from database model instead of C++ model
We now first create the so-called database model from C++ model and
then use that to generate the database schema. The new approach also
adds more general support for primary/foreign keys, including multi-
column keys. Finally, for MySQL we now generate out-of-line foreign
key definitions. Because MySQL does not support deferred constraints
checking, deferred foreign keys are written commented out, for
documentation.
Diffstat (limited to 'odb/relational/sqlite/model.cxx')
-rw-r--r-- | odb/relational/sqlite/model.cxx | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/odb/relational/sqlite/model.cxx b/odb/relational/sqlite/model.cxx new file mode 100644 index 0000000..1324255 --- /dev/null +++ b/odb/relational/sqlite/model.cxx @@ -0,0 +1,58 @@ +// file : odb/relational/sqlite/model.cxx +// author : Boris Kolpackov <boris@codesynthesis.com> +// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC +// license : GNU GPL v3; see accompanying LICENSE file + +#include <sstream> + +#include <odb/relational/model.hxx> + +#include <odb/relational/sqlite/common.hxx> +#include <odb/relational/sqlite/context.hxx> + +using namespace std; + +namespace relational +{ + namespace sqlite + { + namespace model + { + namespace relational = relational::model; + + struct object_columns: relational::object_columns, context + { + object_columns (base const& x): base (x) {} + + virtual string + default_enum (semantics::data_member& m, tree en, string const&) + { + // Make sure the column is mapped to INTEGER. + // + if (column_sql_type (m).type != sql_type::INTEGER) + { + cerr << m.file () << ":" << m.line () << ":" << m.column () + << ": error: column with default value specified as C++ " + << "enumerator must map to SQLite INTEGER" << endl; + + throw operation_failed (); + } + + using semantics::enumerator; + + enumerator& e (dynamic_cast<enumerator&> (*unit.find (en))); + + ostringstream ostr; + + if (e.enum_ ().unsigned_ ()) + ostr << e.value (); + else + ostr << static_cast<long long> (e.value ()); + + return ostr.str (); + } + }; + entry<object_columns> object_columns_; + } + } +} |