query parts progress

backends/tests/QueryTest.cpp

@@ -232,8 +232,8 @@ TEST_CASE_METHOD(QueryFixture, " Select statement with foreign key and join_left
   REQUIRE(f.airplane->id == 1);
 
   auto result = db.query().select({"f.id", "ap.brand", "ap.model", "f.pilot_name"})
-    .from("flight", "f")
-    .join_left("airplane", "ap")
+    .from({"flight", "f"})
+    .join_left({"airplane", "ap"})
                   .on("f.airplane_id"_col == "ap.id"_col)
                   .order_by("f.id").asc()
                   .fetch_all();

backends/tests/StatementTest.cpp

@@ -46,6 +46,7 @@ private:
 
 TEST_CASE_METHOD(StatementTestFixture, " Create prepared statement", "[statement]")
 {
+  table ap{"airplane"};
   SECTION("Insert with prepared statement and placeholder") {
     auto stmt = db.query().insert()
     .into<airplane>("airplane")
@@ -57,7 +58,7 @@ TEST_CASE_METHOD(StatementTestFixture, " Create prepared statement", "[statement
       stmt.reset();
     }
 
-    auto result = db.query().select<airplane>().from("airplane").fetch_all<airplane>();
+    auto result = db.query().select<airplane>().from(ap).fetch_all<airplane>();
 
     size_t index{0};
     for (const auto &i: result) {
@@ -73,7 +74,7 @@ TEST_CASE_METHOD(StatementTestFixture, " Create prepared statement", "[statement
       REQUIRE(res == 1);
     }
 
-    auto stmt = db.query().select<airplane>().from("airplane").where("brand"_col == _).prepare();
+    auto stmt = db.query().select<airplane>().from(ap).where("brand"_col == _).prepare();
 
     stmt.bind(0, "Airbus");
 

demo/main.cpp

@@ -49,8 +49,8 @@ struct book
   }
 };
 
-QUERY_HELPER(author, id, first_name, last_name, date_of_birth, year_of_birth, distinguished)
-QUERY_HELPER(book, id, book_author, title, published_in)
+QUERY_HELPER(authors, id, first_name, last_name, date_of_birth, year_of_birth, distinguished)
+QUERY_HELPER(books, id, book_author, title, published_in)
 
 int main()
 {
@@ -67,7 +67,7 @@ int main()
   connection c(dns, s);
 
   auto books = c.query()
-    .select<book>({qh::book.id.name})
+    .select<book>({matador::qh::books.id.name})
     .from({"book"})
     .join_left({"authors"})
     .on("book.author_id"_col == "author.id"_col)

demo/query_helper.hpp

@@ -41,7 +41,7 @@ table::table(const basic_query<QueryClass>&)
 #define FIELD(x) const field x{#x};
 
 #define QUERY_HELPER(C, ...) \
-namespace qh {     \
+namespace matador::qh {     \
 namespace internal {                      \
 struct C##_query {           \
 MAP(FIELD, __VA_ARGS__) \

include/matador/sql/query_intermediates.hpp

@@ -138,7 +138,12 @@ public:
   using query_select_finish::query_select_finish;
 
   query_join_intermediate join(const std::string &join_table_name, const std::string &as);
-  query_where_intermediate where(const basic_condition &cond);
+  template<class Condition>
+  query_where_intermediate where(const Condition &cond)
+  {
+    data_.parts.push_back(std::make_unique<query_where_part>(cond));
+    return {connection_, data_};
+  }
   query_group_by_intermediate group_by(const std::string &name);
   query_order_by_intermediate order_by(const std::string &name);
 };

include/matador/sql/query_parts.hpp

@@ -81,6 +81,8 @@ public:
     : query_part(dialect::token_t::ON)
     , condition_(new Condition(cond)) {}
 
+  const basic_condition& condition() const;
+
 private:
   void accept(query_part_visitor &visitor) override;
 
@@ -96,6 +98,8 @@ public:
   : query_part(dialect::token_t::WHERE)
   , condition_(new Condition(cond)) {}
 
+  const basic_condition& condition() const;
+
 private:
   void accept(query_part_visitor &visitor) override;
 

include/matador/sql/table.hpp

@@ -12,6 +12,8 @@ struct table
   std::string name;
   std::string alias;
 
+  table(const char *name, std::string as = "") // NOLINT(*-explicit-constructor)
+  : name(name), alias(std::move(as)) {}
   table(std::string name, std::string as = "") // NOLINT(*-explicit-constructor)
   : name(std::move(name)), alias(std::move(as)) {}
 

src/sql/query_compiler.cpp

@@ -6,7 +6,7 @@
 namespace matador::sql {
 
 query_compiler::query_compiler(const sql::dialect &d)
-: dialect_(d)
+  : dialect_(d)
 {}
 
 query_context query_compiler::compile(const query_data *data)
@@ -53,28 +53,34 @@ void query_compiler::visit(query_from_part &from_part)
   if (dialect_.default_schema_name().empty()) {
     query_.sql += " " + dialect_.token_at(dialect::token_t::FROM) +
                   " " + dialect_.prepare_identifier(from_part.table().name) +
-                  (from_part.table().alias.empty() ? "" : " AS " + dialect_.prepare_identifier(from_part.table().alias));
+                  (from_part.table().alias.empty() ? "" : " AS " +
+                                                          dialect_.prepare_identifier(from_part.table().alias));
   } else {
     query_.sql += " " + dialect_.token_at(dialect::token_t::FROM) +
                   " " + dialect_.prepare_identifier(dialect_.default_schema_name()) +
                   "." + dialect_.prepare_identifier(from_part.table().name) +
-                  (from_part.table().alias.empty() ? "" : " AS " + dialect_.prepare_identifier(from_part.table().alias));
+                  (from_part.table().alias.empty() ? "" : " AS " +
+                                                          dialect_.prepare_identifier(from_part.table().alias));
   }
 }
 
 void query_compiler::visit(query_join_part &join_part)
 {
-
+  query_.sql += " " + dialect_.token_at(dialect::token_t::JOIN) +
+                " " + dialect_.prepare_identifier(join_part.table().name) +
+                (join_part.table().alias.empty() ? "" : " AS " + dialect_.prepare_identifier(join_part.table().alias));
 }
 
 void query_compiler::visit(query_on_part &on_part)
 {
-
+  query_.sql += " " + dialect_.token_at(dialect::token_t::ON) +
+                " " + on_part.condition().evaluate(const_cast<dialect &>(dialect_), query_);
 }
 
 void query_compiler::visit(query_where_part &where_part)
 {
-
+  query_.sql += " " + dialect_.token_at(dialect::token_t::WHERE) +
+                " " + where_part.condition().evaluate(const_cast<dialect &>(dialect_), query_);
 }
 
 void query_compiler::visit(query_group_by_part &group_by_part)

src/sql/query_intermediates.cpp

@@ -108,12 +108,6 @@ query_join_intermediate query_on_intermediate::join(const std::string &join_tabl
 //  return {connection_, builder_.join(join_table_name, join_type_t::INNER, as)};
 }
 
-query_where_intermediate query_on_intermediate::where(const basic_condition &cond)
-{
-  return {connection_, data_};
-//  return {connection_, builder_.where(cond)};
-}
-
 query_group_by_intermediate query_on_intermediate::group_by(const std::string &name)
 {
   return {connection_, data_};

src/sql/query_parts.cpp

@@ -48,6 +48,11 @@ void query_join_part::accept(query_part_visitor &visitor)
   visitor.visit(*this);
 }
 
+const basic_condition &query_on_part::condition() const
+{
+  return *condition_;
+}
+
 void query_on_part::accept(query_part_visitor &visitor)
 {
   visitor.visit(*this);
@@ -58,6 +63,11 @@ void query_where_part::accept(query_part_visitor &visitor)
   visitor.visit(*this);
 }
 
+const basic_condition &query_where_part::condition() const
+{
+  return *condition_;
+}
+
 query_table_name_part::query_table_name_part(sql::dialect::token_t token, std::string table_name)
 : query_part(token)
 , table_name_(std::move(table_name)) {}