Use multi-pass table creation in MySQL

This deals with table creation order and circular dependencies.
Unfortunately, there doesn't seem to be a way in MySQL to drop
a foreign key only if it exists without resorting to stored
procedures.

4 files changed, 384 insertions, 0 deletions

diff --git a/common/schema/namespace/driver.cxx b/common/schema/namespace/driver.cxx
new file mode 100644
index 0000000..d74461c
--- /dev/null
+++ b/common/schema/namespace/driver.cxx
@@ -0,0 +1,112 @@
+// file      : common/schema/namespace/driver.cxx
+// copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+// Test database schemas (aka database namespaces).
+//
+
+#include <memory>   // std::auto_ptr
+#include <cassert>
+#include <iostream>
+
+#include <odb/database.hxx>
+#include <odb/transaction.hxx>
+
+#include <common/common.hxx>
+
+#include "test.hxx"
+#include "test-odb.hxx"
+
+using namespace std;
+using namespace odb::core;
+
+int
+main (int argc, char* argv[])
+{
+  try
+  {
+    auto_ptr<database> db (create_database (argc, argv));
+
+    // Test database schema (aka database namespace).
+    //
+    using ns::object2;
+
+    object2 o2;
+    o2.id = "aaa";
+    o2.nums.push_back (1);
+    o2.nums.push_back (2);
+    o2.nums.push_back (3);
+    o2.obj1 = new object1;
+    o2.obj1->str = "aaa";
+
+    {
+      transaction t (db->begin ());
+      db->persist (o2.obj1);
+      db->persist (o2);
+      t.commit ();
+    }
+
+    {
+      transaction t (db->begin ());
+      auto_ptr<object2> p2 (db->load<object2> ("aaa"));
+      t.commit ();
+
+      assert (o2 == *p2);
+    }
+
+    {
+      typedef odb::query<object2> query;
+      typedef odb::result<object2> result;
+
+      transaction t (db->begin ());
+
+      {
+        result r (db->query<object2> (query::id == "aaa"));
+        assert (size (r) == 1);
+      }
+
+      {
+        result r (db->query<object2> (query::obj1->str == "aaa"));
+        assert (size (r) == 1);
+      }
+
+      t.commit ();
+    }
+
+    {
+      typedef odb::query<object_view> query;
+      typedef odb::result<object_view> result;
+
+      transaction t (db->begin ());
+
+      result r (db->query<object_view> (query::object2::id == "aaa"));
+
+      result::iterator i (r.begin ());
+      assert (i != r.end ());
+      assert (i->id2 == "aaa" && i->str == "aaa");
+      assert (++i == r.end ());
+
+      t.commit ();
+    }
+
+    {
+      typedef odb::result<table_view> result;
+
+      transaction t (db->begin ());
+
+      result r (db->query<table_view> ());
+
+      result::iterator i (r.begin ());
+      assert (i != r.end ());
+      assert (i->str == "aaa");
+      assert (++i == r.end ());
+
+      t.commit ();
+    }
+  }
+  catch (const odb::exception& e)
+  {
+    cerr << e.what () << endl;
+    return 1;
+  }
+}
diff --git a/common/schema/namespace/makefile b/common/schema/namespace/makefile
new file mode 100644
index 0000000..e15ee10
--- /dev/null
+++ b/common/schema/namespace/makefile
@@ -0,0 +1,115 @@
+# file      : common/schema/namespace/makefile
+# copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC
+# license   : GNU GPL v2; see accompanying LICENSE file
+
+include $(dir $(lastword $(MAKEFILE_LIST)))../../../build/bootstrap.make
+
+cxx_tun := driver.cxx
+odb_hdr := test.hxx
+cxx_obj := $(addprefix $(out_base)/,$(cxx_tun:.cxx=.o) $(odb_hdr:.hxx=-odb.o))
+cxx_od  := $(cxx_obj:.o=.o.d)
+
+common.l             := $(out_root)/libcommon/common/common.l
+common.l.cpp-options := $(out_root)/libcommon/common/common.l.cpp-options
+
+driver  := $(out_base)/driver
+dist    := $(out_base)/.dist
+test    := $(out_base)/.test
+clean   := $(out_base)/.clean
+
+# Import.
+#
+$(call import,\
+  $(scf_root)/import/odb/stub.make,\
+  odb: odb,odb-rules: odb_rules)
+
+# Build.
+#
+$(driver): $(cxx_obj) $(common.l)
+$(cxx_obj) $(cxx_od): cpp_options := -I$(out_base) -I$(src_base)
+$(cxx_obj) $(cxx_od): $(common.l.cpp-options)
+
+genf := $(addprefix $(odb_hdr:.hxx=-odb),.hxx .ixx .cxx) $(odb_hdr:.hxx=.sql)
+gen  := $(addprefix $(out_base)/,$(genf))
+
+$(gen): $(odb)
+$(gen): odb := $(odb)
+$(gen) $(dist): export odb_options += --database $(db_id) --generate-schema \
+--generate-query --table-prefix schema_ns_
+$(gen): cpp_options := -I$(src_base)
+$(gen): $(common.l.cpp-options)
+
+$(call include-dep,$(cxx_od),$(cxx_obj),$(gen))
+
+# Alias for default target.
+#
+$(out_base)/: $(driver)
+
+# Dist
+#
+name := $(subst /,-,$(subst $(src_root)/common/,,$(src_base)))
+
+$(dist): db_id := @database@
+$(dist): sources := $(cxx_tun)
+$(dist): headers := $(odb_hdr)
+$(dist): data_dist := test.std
+$(dist): export name := $(name)
+$(dist): export extra_dist := $(data_dist) $(call vc9projs,$(name)) \
+$(call vc10projs,$(name)) $(call vc11projs,$(name))
+$(dist):
+	$(call dist-data,$(sources) $(headers) $(data_dist))
+	$(call meta-automake,../../template/Makefile.am)
+	$(call meta-vc9projs,../../template/template,$(name))
+	$(call meta-vc10projs,../../template/template,$(name))
+	$(call meta-vc11projs,../../template/template,$(name))
+
+# Test.
+#
+$(test): $(driver) $(src_base)/test.std
+	$(call schema)
+	$(call message,test $<,$< --options-file $(dcf_root)/db.options \
+>$(out_base)/test.out)
+	$(call message,,diff -u $(src_base)/test.std $(out_base)/test.out)
+	$(call message,,rm -f $(out_base)/test.out)
+
+# Clean.
+#
+$(clean):                            \
+  $(driver).o.clean                  \
+  $(addsuffix .cxx.clean,$(cxx_obj)) \
+  $(addsuffix .cxx.clean,$(cxx_od))  \
+  $(addprefix $(out_base)/,$(odb_hdr:.hxx=-odb.cxx.hxx.clean))
+	$(call message,,rm -f $(out_base)/test.out)
+
+# Generated .gitignore.
+#
+ifeq ($(out_base),$(src_base))
+$(driver): | $(out_base)/.gitignore
+
+$(out_base)/.gitignore: files := driver $(genf)
+$(clean): $(out_base)/.gitignore.clean
+
+$(call include,$(bld_root)/git/gitignore.make)
+endif
+
+# How to.
+#
+$(call include,$(bld_root)/dist.make)
+$(call include,$(bld_root)/meta/vc9proj.make)
+$(call include,$(bld_root)/meta/vc10proj.make)
+$(call include,$(bld_root)/meta/vc11proj.make)
+$(call include,$(bld_root)/meta/automake.make)
+
+$(call include,$(bld_root)/cxx/standard.make) # cxx_standard
+ifdef cxx_standard
+$(gen): odb_options += --std $(cxx_standard)
+$(call include,$(odb_rules))
+endif
+
+$(call include,$(bld_root)/cxx/cxx-d.make)
+$(call include,$(bld_root)/cxx/cxx-o.make)
+$(call include,$(bld_root)/cxx/o-e.make)
+
+# Dependencies.
+#
+$(call import,$(src_root)/libcommon/makefile)
diff --git a/common/schema/namespace/test.hxx b/common/schema/namespace/test.hxx
new file mode 100644
index 0000000..44d5c60
--- /dev/null
+++ b/common/schema/namespace/test.hxx
@@ -0,0 +1,157 @@
+// file      : common/schema/namespace/test.hxx
+// copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef TEST_HXX
+#define TEST_HXX
+
+#include <string>
+#include <vector>
+
+#include <odb/core.hxx>
+
+// Table names.
+//
+#pragma db object table("TABLE_EXPLICIT")
+struct table_explicit
+{
+  #pragma db id
+  unsigned long id_;
+};
+
+#pragma db object
+struct table_implicit
+{
+  #pragma db id
+  unsigned long id_;
+};
+
+// Column names.
+//
+#pragma db object
+struct column
+{
+  #pragma db id
+  int m1;
+
+  #pragma db column("foo")
+  int m2;
+
+  int m_m3;
+  int _m4;
+  int m5_;
+  int m_;
+  int m__;
+};
+
+// Column types.
+//
+#pragma db object
+struct type
+{
+  #pragma db id
+  std::string id;
+
+  // Test default C++ to DB type mapping.
+  //
+  bool b;
+  char c;
+  signed char sc;
+  unsigned char uc;
+  short s;
+  unsigned short us;
+  int i;
+  unsigned int ui;
+  long l;
+  unsigned long ul;
+  long long ll;
+  unsigned long long ull;
+  float f;
+  double d;
+  std::string str;
+
+  #pragma db type("INTEGER")
+  bool m1;
+
+  #pragma db transient
+  char* m2;
+};
+
+// Test database schema (aka database namespace).
+//
+#ifdef ODB_COMPILER
+#if defined (ODB_DATABASE_MYSQL)
+//#  define DB_SCHEMA "odb_test"
+#  define DB_SCHEMA ""
+#elif defined (ODB_DATABASE_SQLITE)
+#  define DB_SCHEMA "main"
+#elif defined (ODB_DATABASE_PGSQL)
+#  define DB_SCHEMA "public"
+#elif defined (ODB_DATABASE_ORACLE)
+//#  define DB_SCHEMA "ODB_TEST"
+#  define DB_SCHEMA ""
+#elif defined(ODB_DATABASE_MSSQL)
+#  define DB_SCHEMA "dbo"
+#else
+#  error unknown database
+#endif
+#endif
+
+namespace ns {typedef int my_int;} // Original.
+
+#pragma db object table(DB_SCHEMA."object_1")
+struct object1
+{
+  #pragma db id auto
+  unsigned long id;
+
+  #pragma db column("str")
+  std::string str;
+};
+
+inline bool
+operator== (const object1& x, const object1& y)
+{
+  return x.id == y.id && x.str == y.str;
+}
+
+#pragma db namespace schema(DB_SCHEMA)
+namespace ns // Extension.
+{
+  #pragma db object
+  struct object2
+  {
+    object2 (): obj1 (0) {}
+    ~object2 () {delete obj1;}
+
+    #pragma db id
+    std::string id;
+
+    std::vector<unsigned int> nums;
+    object1* obj1;
+  };
+
+  inline bool
+  operator== (const object2& x, const object2& y)
+  {
+    return x.id == y.id && x.nums == y.nums && *x.obj1 == *y.obj1;
+  }
+}
+
+#pragma db view object(object1) object(ns::object2)
+struct object_view
+{
+  #pragma db column(ns::object2::id)
+  std::string id2;
+
+  std::string str;
+};
+
+#pragma db view table(DB_SCHEMA."schema_object_1")
+struct table_view
+{
+  #pragma db column(DB_SCHEMA."schema_object_1"."str")
+  std::string str;
+};
+
+#endif // TEST_HXX
diff --git a/common/schema/namespace/test.std b/common/schema/namespace/test.std
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/common/schema/namespace/test.std