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.

5 files changed, 221 insertions, 0 deletions

diff --git a/common/schema/embedded/order/driver.cxx b/common/schema/embedded/order/driver.cxx
new file mode 100644
index 0000000..7503cf5
--- /dev/null
+++ b/common/schema/embedded/order/driver.cxx
@@ -0,0 +1,60 @@
+// file      : common/schema/embedded/order/driver.cxx
+// copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+// Test statement execution order in embedded schemas.
+//
+
+#include <memory>   // std::auto_ptr
+#include <cassert>
+#include <iostream>
+
+#include <odb/database.hxx>
+#include <odb/transaction.hxx>
+#include <odb/schema-catalog.hxx>
+
+#include <common/config.hxx> // DATABASE_XXX
+#include <common/common.hxx>
+
+#include "test1.hxx"
+#include "test2.hxx"
+
+#include "test1-odb.hxx"
+#include "test2-odb.hxx"
+
+using namespace std;
+using namespace odb::core;
+
+int
+main (int argc, char* argv[])
+{
+  try
+  {
+    auto_ptr<database> db (create_database (argc, argv));
+
+    // Create the database schema.
+    //
+    {
+      connection_ptr c (db->connection ());
+
+      // Temporarily disable foreign key constraints for SQLite.
+      //
+#if defined(DATABASE_SQLITE)
+      c->execute ("PRAGMA foreign_keys=OFF");
+#endif
+
+      transaction t (c->begin ());
+      schema_catalog::create_schema (*db);
+      t.commit ();
+
+#if defined(DATABASE_SQLITE)
+      c->execute ("PRAGMA foreign_keys=ON");
+#endif
+    }
+  }
+  catch (const odb::exception& e)
+  {
+    cerr << e.what () << endl;
+    return 1;
+  }
+}
diff --git a/common/schema/embedded/order/makefile b/common/schema/embedded/order/makefile
new file mode 100644
index 0000000..b706345
--- /dev/null
+++ b/common/schema/embedded/order/makefile
@@ -0,0 +1,119 @@
+# file      : common/schema/embedded/order/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 := test2.hxx test1.hxx # Reverse order.
+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 := $(foreach f,$(odb_hdr:.hxx=),$(addprefix $f,-odb.hxx -odb.ixx -odb.cxx .sql))
+gen  := $(addprefix $(out_base)/,$(genf))
+
+$(gen): $(odb)
+$(gen): odb := $(odb)
+$(gen) $(dist): export odb_options += --database $(db_id) --generate-schema \
+--schema-format embedded --table-prefix schema_embd_ordr_
+$(gen): cpp_options := -I$(src_base)
+$(gen): $(common.l.cpp-options)
+
+# Extra dependecy for the ODB-generated code.
+#
+$(gen): $(addprefix $(src_base)/,$(odb_hdr))
+
+$(call include-dep,$(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 odb_header_stem := $(basename $(odb_hdr))
+$(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 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/embedded/order/test.std b/common/schema/embedded/order/test.std
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/common/schema/embedded/order/test.std
diff --git a/common/schema/embedded/order/test1.hxx b/common/schema/embedded/order/test1.hxx
new file mode 100644
index 0000000..d7e0622
--- /dev/null
+++ b/common/schema/embedded/order/test1.hxx
@@ -0,0 +1,24 @@
+// file      : common/schema/embedded/order/test1.hxx
+// copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef TEST1_HXX
+#define TEST1_HXX
+
+#include <string>
+
+#include <odb/core.hxx>
+
+#pragma db object polymorphic
+struct base
+{
+  virtual
+  ~base () {}
+
+  #pragma db auto id
+  unsigned long id;
+
+  std::string str;
+};
+
+#endif // TEST1_HXX
diff --git a/common/schema/embedded/order/test2.hxx b/common/schema/embedded/order/test2.hxx
new file mode 100644
index 0000000..870ca51
--- /dev/null
+++ b/common/schema/embedded/order/test2.hxx
@@ -0,0 +1,18 @@
+// file      : common/schema/embedded/order/test2.hxx
+// copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef TEST2_HXX
+#define TEST2_HXX
+
+#include <odb/core.hxx>
+
+#include "test1.hxx"
+
+#pragma db object
+struct derived: base
+{
+  int num;
+};
+
+#endif // TEST2_HXX