removed condition classes, functions and operators

include/matador/orm/session.hpp

@@ -4,7 +4,7 @@
 #include "matador/orm/error_code.hpp"
 #include "matador/orm/session_query_builder.hpp"
 
-#include "matador/query/condition.hpp"
+#include "matador/query/criteria.hpp"
 #include "matador/query/query.hpp"
 
 #include "matador/sql/column_generator.hpp"

include/matador/orm/session_insert_builder.hpp

@@ -3,7 +3,7 @@
 
 #include "matador/orm/query_builder_exception.hpp"
 
-#include "matador/query/condition.hpp"
+#include "matador/query/criteria.hpp"
 #include "matador/query/query_intermediates.hpp"
 
 #include "matador/object/repository.hpp"
@@ -14,8 +14,8 @@
 namespace matador::orm {
 struct entity_insert_data {
   sql::table table;
-  std::vector<std::string> columns;
+  std::vector<std::string> columns{};
-  std::vector<utils::database_type> values;
+  std::vector<utils::database_type> values{};
 };
 
 enum class insert_build_error : std::uint8_t {

include/matador/orm/session_query_builder.hpp

@@ -3,7 +3,7 @@
 
 #include "matador/orm/query_builder_exception.hpp"
 
-#include "matador/query/condition.hpp"
+#include "matador/query/criteria.hpp"
 #include "matador/query/query.hpp"
 
 #include "matador/sql/executor.hpp"
@@ -27,7 +27,7 @@ struct entity_query_data {
   std::vector<sql::column> columns{};
   std::unordered_map<std::string, sql::statement> lazy_loading_statements{};
   std::vector<query::join_data> joins{};
-  std::unique_ptr<query::basic_condition> where_clause{};
+  query::criteria_ptr where_clause;
 };
 
 class session_query_builder final {
@@ -87,8 +87,9 @@ public:
     }
     entity_query_data_.pk_column_name = id;
     if (!pk_.is_null()) {
-      auto c = sql::column{table_info_stack_.top().table, id, ""};
+      const auto c = sql::column{table_info_stack_.top().table, id, ""};
-      auto co = std::make_unique<query::condition<sql::column, utils::placeholder>>(c, query::basic_condition::operand_type::EQUAL, utils::_);
+      using namespace matador::query;
+      auto co = c == utils::_;
       entity_query_data_.where_clause = std::move(co);
     }
   }
@@ -240,13 +241,13 @@ private:
     std::shared_ptr<sql::table> table;
   };
 
-  std::stack<table_info> table_info_stack_;
+  std::stack<table_info> table_info_stack_{};
-  std::unordered_map<std::string, std::shared_ptr<sql::table>> processed_tables_;
+  std::unordered_map<std::string, std::shared_ptr<sql::table>> processed_tables_{};
   const object::repository &schema_;
-  entity_query_data entity_query_data_;
+  entity_query_data entity_query_data_{};
   unsigned int column_index{0};
   unsigned int table_index{0};
-  object::join_columns_collector join_columns_collector_;
+  object::join_columns_collector join_columns_collector_{};
   sql::executor &executor_;
 };
 

include/matador/query/criteria/between_criteria.hpp

@@ -19,8 +19,8 @@ public:
     void accept(criteria_visitor& visitor) const override;
 
     [[nodiscard]] const sql::column& column() const;
-    [[nodiscard]] const criteria_value &min() const;
+    [[nodiscard]] const criteria_value &minimum() const;
-    [[nodiscard]] const criteria_value &max() const;
+    [[nodiscard]] const criteria_value &maximum() const;
 
 private:
     sql::column column_;

include/matador/query/criteria/binary_criteria.hpp

@@ -32,5 +32,22 @@ private:
     binary_operator operator_{};
     criteria_value value_;
 };
+
+class binary_column_criteria final : public abstract_criteria {
+public:
+    binary_column_criteria() = delete;
+    binary_column_criteria(sql::column left_column, binary_operator operand, sql::column right_column);
+
+    void accept(criteria_visitor& visitor) const override;
+
+    [[nodiscard]] const sql::column& left_column() const;
+    [[nodiscard]] binary_operator operand() const;
+    [[nodiscard]] const sql::column& right_column() const;
+
+private:
+    sql::column left_column_;
+    binary_operator operator_{};
+    sql::column right_column_;
+};
 }
 #endif //CRITERIA_BINARY_CRITERIA_NODE_HPP

include/matador/query/criteria/collection_criteria.hpp

@@ -9,13 +9,33 @@
 
 namespace matador::query {
 enum class collection_operator {
-    IN,
+  In,
-    OUT
+  Out
 };
 
+/**
+ * @brief Criteria class representing an IN condition
+ *
+ * This class represents a query IN condition and evaluates to
+ * this condition based on the current database d
+ *
+ * @code
+ * WHERE age IN (29,34,56)
+ * @endcode
+ */
 class collection_criteria final : public abstract_criteria {
 public:
     collection_criteria() = delete;
+    /**
+     * @brief Creates an IN condition
+     *
+     * Creates an IN or OUT criteria for the given sql::column and
+     * the given list of arguments.
+     *
+     * @param col Column for the IN condition
+     * @param operand_ Operator to use
+     * @param values List of values
+     */
     collection_criteria(sql::column col, collection_operator operand_, std::vector<criteria_value> values);
     collection_criteria(sql::column col, collection_operator operand_, std::initializer_list<criteria_value> values);
 

include/matador/query/criteria/criteria_operators.hpp

@@ -19,6 +19,8 @@ criteria_ptr operator==(const sql::column &col, Type val) {
     return std::make_unique<binary_criteria>(col, binary_operator::EQUALS, utils::value(val));
 }
 
+criteria_ptr operator==(const sql::column &col_left, const sql::column &col_right);
+
 template<class Type>
 criteria_ptr operator!=(const sql::column &col, Type val) {
     return std::make_unique<binary_criteria>(col, binary_operator::NOT_EQUALS, utils::value(val));
@@ -63,7 +65,7 @@ criteria_ptr in(const sql::column &col, std::initializer_list<Type> args) {
     for ( auto &&arg : args ) {
         values.emplace_back(utils::value{std::move(arg)});
     }
-    return std::make_unique<collection_criteria>(col, collection_operator::IN, std::move(values));
+    return std::make_unique<collection_criteria>(col, collection_operator::In, std::move(values));
 }
 
 template <>
@@ -77,7 +79,7 @@ criteria_ptr out(const sql::column &col, std::initializer_list<Type> args) {
     for ( auto &&arg : args ) {
         values.emplace_back(utils::value{std::move(arg)});
     }
-    return std::make_unique<collection_criteria>(col, collection_operator::OUT, values);
+    return std::make_unique<collection_criteria>(col, collection_operator::Out, values);
 }
 
 template <>

include/matador/query/criteria/criteria_visitor.hpp

@@ -4,6 +4,7 @@
 namespace matador::query {
 class between_criteria;
 class binary_criteria;
+class binary_column_criteria;
 class like_criteria;
 class logical_criteria;
 class not_criteria;
@@ -16,6 +17,7 @@ public:
 
     virtual void visit(const between_criteria &node) = 0;
     virtual void visit(const binary_criteria &node) = 0;
+    virtual void visit(const binary_column_criteria &node) = 0;
     virtual void visit(const collection_criteria &node) = 0;
     virtual void visit(const collection_query_criteria &node) = 0;
     virtual void visit(const like_criteria &node) = 0;

include/matador/query/criteria_evaluator.hpp

@@ -22,6 +22,7 @@ public:
 
   void visit(const between_criteria &node) override;
   void visit(const binary_criteria &node) override;
+  void visit(const binary_column_criteria &node) override;
   void visit(const collection_criteria &node) override;
   void visit(const collection_query_criteria &node) override;
   void visit(const like_criteria &node) override;

include/matador/query/intermediates/query_delete_from_intermediate.hpp

@@ -3,7 +3,7 @@
 
 #include "matador/query/intermediates/executable_query.hpp"
 
-#include "matador/query/basic_condition.hpp"
+#include "matador/query/criteria/abstract_criteria.hpp"
 
 #include "matador/query/intermediates/query_execute_where_intermediate.hpp"
 
@@ -14,14 +14,10 @@ class query_delete_from_intermediate : public executable_query
 public:
   using executable_query::executable_query;
 
-  template<class Condition>
+  query_execute_where_intermediate where(std::unique_ptr<abstract_criteria> cond);
-  query_execute_where_intermediate where(const Condition &cond)
-  {
-    return where_clause(std::make_unique<Condition>(std::move(cond)));
-  }
 
 private:
-  query_execute_where_intermediate where_clause(std::unique_ptr<basic_condition> &&cond);
+  query_execute_where_intermediate where_clause(std::unique_ptr<abstract_criteria> &&cond);
 };
 
 }

include/matador/query/intermediates/query_from_intermediate.hpp

@@ -19,20 +19,17 @@ public:
   query_from_intermediate join_left(join_data &data);
   query_from_intermediate join_left(std::vector<join_data> &data_vector);
 
-  template<class Condition>
+  // template<class Condition>
-  query_where_intermediate where(const Condition &cond)
+  // query_where_intermediate where(const Condition &cond)
-  {
+  // {
-    return where_clause(std::make_unique<Condition>(std::move(cond)));
+  //   return where_clause(std::make_unique<Condition>(std::move(cond)));
-  }
+  // }
-  query_where_intermediate where(std::unique_ptr<basic_condition> &&cond)
+  query_where_intermediate where(std::unique_ptr<abstract_criteria> &&cond);
-  {
-    return where_clause(std::move(cond));
-  }
   query_group_by_intermediate group_by(const sql::column &col);
   query_order_by_intermediate order_by(const sql::column &col);
 
 private:
-  query_where_intermediate where_clause(std::unique_ptr<basic_condition> &&cond);
+  query_where_intermediate where_clause(std::unique_ptr<abstract_criteria> &&cond);
 };
 
 }

include/matador/query/intermediates/query_join_intermediate.hpp

@@ -13,18 +13,15 @@ class query_join_intermediate : public query_intermediate
 public:
   using query_intermediate::query_intermediate;
 
-  template<class Condition>
+  // template<class Condition>
-  query_on_intermediate on(const Condition &cond)
+  // query_on_intermediate on(const Condition &cond)
-  {
+  // {
-    return on_clause(std::make_unique<Condition>(std::move(cond)));
+  //   return on_clause(std::make_unique<Condition>(std::move(cond)));
-  }
+  // }
-  query_on_intermediate on(std::unique_ptr<basic_condition> &&cond)
+  query_on_intermediate on(std::unique_ptr<abstract_criteria> &&cond);
-  {
-    return on_clause(std::move(cond));
-  }
 
 private:
-  query_on_intermediate on_clause(std::unique_ptr<basic_condition> &&cond);
+  query_on_intermediate on_clause(std::unique_ptr<abstract_criteria> &&cond);
 };
 
 }

include/matador/query/intermediates/query_set_intermediate.hpp

@@ -3,7 +3,7 @@
 
 #include "matador/query/intermediates/executable_query.hpp"
 
-#include "matador/query/basic_condition.hpp"
+#include "matador/query/criteria/abstract_criteria.hpp"
 
 #include "matador/query/intermediates/query_execute_where_intermediate.hpp"
 
@@ -14,14 +14,12 @@ class query_set_intermediate : public executable_query
 public:
   using executable_query::executable_query;
 
-  template<class Condition>
+  query_execute_where_intermediate where(std::unique_ptr<abstract_criteria> cond) {
-  query_execute_where_intermediate where(const Condition &cond)
+    return where_clause(std::move(cond));
-  {
-    return where_clause(std::make_unique<Condition>(std::move(cond)));
   }
 
 private:
-  query_execute_where_intermediate where_clause(std::unique_ptr<basic_condition> &&cond);
+  query_execute_where_intermediate where_clause(std::unique_ptr<abstract_criteria> &&cond);
 };
 
 }

include/matador/query/internal/query_parts.hpp

@@ -2,7 +2,7 @@
 #define QUERY_QUERY_PARTS_HPP
 
 #include "matador/query/query_part_visitor.hpp"
-#include "matador/query/basic_condition.hpp"
+#include "matador/query/criteria.hpp"
 
 #include "matador/query/internal/key_value_pair.hpp"
 #include "matador/query/query_part.hpp"
@@ -70,15 +70,15 @@ public:
   explicit query_on_part(const Condition &cond)
     : query_part(sql::dialect_token::On)
     , condition_(new Condition(cond)) {}
-  explicit query_on_part(std::unique_ptr<basic_condition> &&cond);
+  explicit query_on_part(std::unique_ptr<abstract_criteria> &&cond);
 
-  [[nodiscard]] const basic_condition& condition() const;
+  [[nodiscard]] const abstract_criteria& condition() const;
 
 private:
   void accept(query_part_visitor &visitor) override;
 
 private:
-  std::unique_ptr<basic_condition> condition_;
+  std::unique_ptr<abstract_criteria> condition_;
 };
 
 class query_where_part final : public query_part
@@ -88,15 +88,15 @@ public:
   explicit query_where_part(const Condition &cond)
   : query_part(sql::dialect_token::Where)
   , condition_(new Condition(cond)) {}
-  explicit query_where_part(std::unique_ptr<basic_condition> &&cond);
+  explicit query_where_part(std::unique_ptr<abstract_criteria> &&cond);
 
-  [[nodiscard]] const basic_condition& condition() const;
+  [[nodiscard]] const abstract_criteria& condition() const;
 
 private:
   void accept(query_part_visitor &visitor) override;
 
 private:
-  std::unique_ptr<basic_condition> condition_;
+  std::unique_ptr<abstract_criteria> condition_;
 };
 
 class query_table_name_part : public query_part

include/matador/query/join_data.hpp

@@ -1,7 +1,7 @@
 #ifndef JOIN_DATA_HPP
 #define JOIN_DATA_HPP
 
-#include "matador/query/basic_condition.hpp"
+#include "matador/query/criteria/abstract_criteria.hpp"
 
 #include "matador/sql/table.hpp"
 
@@ -9,10 +9,9 @@
 
 namespace matador::query {
 
-struct join_data
+struct join_data {
-{
   std::shared_ptr<sql::table> join_table;
-  std::unique_ptr<basic_condition> condition;
+  std::unique_ptr<abstract_criteria> condition;
 };
 
 }

include/matador/query/query_compiler.hpp

@@ -26,8 +26,8 @@ class query_compiler final : public query_part_visitor
 {
 public:
   sql::query_context compile(const query_data &data,
-                        const sql::dialect &d,
+                             const sql::dialect &d,
-                        std::optional<std::reference_wrapper<const sql::connection_impl>> conn);
+                             std::optional<std::reference_wrapper<const sql::connection_impl>> conn);
 
 protected:
   void visit(internal::query_select_part &select_part) override;

source/orm/CMakeLists.txt

@@ -5,7 +5,6 @@ add_library(matador-orm STATIC
   ../../include/matador/orm/session_insert_builder.hpp
   ../../include/matador/orm/session_query_builder.hpp
   ../../include/matador/query/attribute_string_writer.hpp
-  ../../include/matador/query/basic_condition.hpp
   ../../include/matador/query/criteria/abstract_criteria.hpp
   ../../include/matador/query/criteria/between_criteria.hpp
   ../../include/matador/query/criteria/collection_criteria.hpp
@@ -14,7 +13,6 @@ add_library(matador-orm STATIC
   ../../include/matador/query/criteria/criteria_visitor.hpp
   ../../include/matador/query/criteria/like_criteria.hpp
   ../../include/matador/query/criteria/logical_criteria.hpp
-  ../../include/matador/query/condition.hpp
   ../../include/matador/query/fk_value_extractor.hpp
   ../../include/matador/query/intermediates/executable_query.hpp
   ../../include/matador/query/intermediates/fetchable_query.hpp
@@ -85,7 +83,6 @@ add_library(matador-orm STATIC
   orm/session_insert_builder.cpp
   orm/session_query_builder.cpp
   query/attribute_string_writer.cpp
-  query/basic_condition.cpp
   query/criteria/between_criteria.cpp
   query/criteria/binary_criteria.cpp
   query/criteria/collection_criteria.cpp
@@ -93,7 +90,6 @@ add_library(matador-orm STATIC
   query/criteria/like_criteria.cpp
   query/criteria/logical_criteria.cpp
   query/criteria/not_criteria.cpp
-  query/condition.cpp
   query/intermediates/executable_query.cpp
   query/intermediates/fetchable_query.cpp
   query/intermediates/query_create_intermediate.cpp

source/orm/orm/session.cpp

@@ -1,10 +1,10 @@
 #include "matador/orm/session.hpp"
 
 #include "matador/sql/backend_provider.hpp"
+#include "matador/sql/dialect.hpp"
 
 #include "matador/query/query.hpp"
 
-#include <queue>
 #include <stdexcept>
 
 namespace matador::orm {

source/orm/orm/session_query_builder.cpp

@@ -30,7 +30,7 @@ void session_query_builder::append_join(const sql::column &left, const sql::colu
   using namespace matador::query;
   entity_query_data_.joins.push_back({
     {right.table_},
-    make_condition(left == right)
+    left == right
   });
 }
 }

source/orm/query/criteria/between_criteria.cpp

@@ -23,11 +23,11 @@ const sql::column & between_criteria::column() const {
   return column_;
 }
 
-const criteria_value &between_criteria::min() const {
+const criteria_value &between_criteria::minimum() const {
   return min_;
 }
 
-const criteria_value &between_criteria::max() const {
+const criteria_value &between_criteria::maximum() const {
   return max_;
 }
 }

source/orm/query/criteria/binary_criteria.cpp

@@ -24,4 +24,25 @@ binary_operator binary_criteria::operand() const {
 const criteria_value& binary_criteria::value() const {
   return value_;
 }
+
+binary_column_criteria::binary_column_criteria( sql::column left_column, binary_operator operand, sql::column right_column )
+: left_column_(std::move(left_column))
+, operator_(operand)
+, right_column_(std::move(right_column)){}
+
+void binary_column_criteria::accept(criteria_visitor& visitor) const {
+  visitor.visit(*this);
+}
+
+const sql::column& binary_column_criteria::left_column() const {
+  return left_column_;
+}
+
+binary_operator binary_column_criteria::operand() const {
+  return operator_;
+}
+
+const sql::column& binary_column_criteria::right_column() const {
+  return right_column_;
+}
 }

source/orm/query/criteria/criteria_operators.cpp

@@ -6,6 +6,10 @@
 #include "matador/query/criteria/not_criteria.hpp"
 
 namespace matador::query {
+criteria_ptr operator==( const sql::column& col_left, const sql::column& col_right ) {
+  return std::make_unique<binary_column_criteria>(col_left, binary_operator::EQUALS, col_right);
+}
+
 criteria_ptr operator==(const sql::column &col, utils::placeholder p) {
   return std::make_unique<binary_criteria>(col, binary_operator::EQUALS, p);
 }
@@ -49,11 +53,11 @@ criteria_ptr in(const sql::column &col, const std::initializer_list<utils::place
   for ( auto &&arg : args ) {
     values.emplace_back(arg);
   }
-  return std::make_unique<collection_criteria>(col, collection_operator::IN, std::move(values));
+  return std::make_unique<collection_criteria>(col, collection_operator::In, std::move(values));
 }
 
 criteria_ptr in(const sql::column &col, sql::query_context &&ctx) {
-  return std::make_unique<collection_query_criteria>(col, collection_operator::IN, std::move(ctx));
+  return std::make_unique<collection_query_criteria>(col, collection_operator::In, std::move(ctx));
 }
 
 template <>
@@ -62,11 +66,11 @@ criteria_ptr out(const sql::column &col, const std::initializer_list<utils::plac
   for ( auto &&arg : args ) {
     values.emplace_back(arg);
   }
-  return std::make_unique<collection_criteria>(col, collection_operator::OUT, values);
+  return std::make_unique<collection_criteria>(col, collection_operator::Out, values);
 }
 
 criteria_ptr out(const sql::column &col, sql::query_context &&ctx) {
-  return std::make_unique<collection_query_criteria>(col, collection_operator::IN, std::move(ctx));
+  return std::make_unique<collection_query_criteria>(col, collection_operator::In, std::move(ctx));
 }
 
 criteria_ptr between(const sql::column &col, const int64_t min, const int64_t max) {

source/orm/query/criteria_evaluator.cpp

@@ -41,9 +41,9 @@ void criteria_evaluator::visit(const between_criteria &node) {
   query_.bind_vars.emplace_back(node.column().name);
   query_.bind_vars.emplace_back(node.column().name);
   clause_ += dialect_.prepare_identifier(node.column()) + " " + dialect_.token_at(sql::dialect_token::Between) + " ";
-  evaluate_value(node.min());
+  evaluate_value(node.minimum());
   clause_ += " " + dialect_.token_at(sql::dialect_token::And) + " ";
-  evaluate_value(node.max());
+  evaluate_value(node.maximum());
 }
 
 template<class... Ts> struct overload : Ts... { using Ts::operator()...; };
@@ -55,6 +55,10 @@ void criteria_evaluator::visit(const binary_criteria &node) {
   evaluate_value(node.value());
 }
 
+void criteria_evaluator::visit( const binary_column_criteria& node ) {
+  clause_ += dialect_.prepare_condition(node.left_column()) + " " + detail::BinaryOperatorEnum.to_string(node.operand()) + " " + dialect_.prepare_condition(node.right_column());
+}
+
 void criteria_evaluator::visit(const collection_criteria &node) {
   const auto count = node.values().size();
   for (size_t i = 0; i < count; ++i) {
@@ -62,7 +66,7 @@ void criteria_evaluator::visit(const collection_criteria &node) {
   }
 
   clause_ += dialect_.prepare_identifier(node.column()) +
-      (node.operand() == collection_operator::OUT ? " " + dialect_.token_at(sql::dialect_token::Not) + " " : " ") +
+      (node.operand() == collection_operator::Out ? " " + dialect_.token_at(sql::dialect_token::Not) + " " : " ") +
       dialect_.token_at(sql::dialect_token::In) + " (";
   if (node.values().size() < 2) {
     for (const auto &val: node.values()) {
@@ -81,7 +85,7 @@ void criteria_evaluator::visit(const collection_criteria &node) {
 
 void criteria_evaluator::visit(const collection_query_criteria &node) {
   clause_ += dialect_.prepare_identifier(node.column()) +
-      (node.operand() == collection_operator::OUT ? " " + dialect_.token_at(sql::dialect_token::Not) + " " : " ") +
+      (node.operand() == collection_operator::Out ? " " + dialect_.token_at(sql::dialect_token::Not) + " " : " ") +
       dialect_.token_at(sql::dialect_token::In) + " (" +node.context().sql + ")";
 }
 

source/orm/query/intermediates/query_delete_from_intermediate.cpp

@@ -4,10 +4,12 @@
 
 namespace matador::query {
 
-query_execute_where_intermediate query_delete_from_intermediate::where_clause(std::unique_ptr<basic_condition> &&cond)
+query_execute_where_intermediate query_delete_from_intermediate::where_clause(std::unique_ptr<abstract_criteria> &&cond) {
-{
   context_->parts.push_back(std::make_unique<internal::query_where_part>(std::move(cond)));
   return {context_};
 }
 
+query_execute_where_intermediate query_delete_from_intermediate::where( std::unique_ptr<abstract_criteria> cond ) {
+    return where_clause(std::move(cond));
+}
 }

source/orm/query/intermediates/query_from_intermediate.cpp

@@ -8,44 +8,42 @@
 
 namespace matador::query {
 
-query_join_intermediate query_from_intermediate::join_left(const sql::table &t)
+query_join_intermediate query_from_intermediate::join_left(const sql::table &t) {
-{
   context_->parts.push_back(std::make_unique<internal::query_join_part>(t));
   return {context_};
 }
 
-query_from_intermediate query_from_intermediate::join_left(join_data &data)
+query_from_intermediate query_from_intermediate::join_left(join_data &data) {
-{
   context_->parts.push_back(std::make_unique<internal::query_join_part>(*data.join_table));
   context_->parts.push_back(std::make_unique<internal::query_on_part>(std::move(data.condition)));
   return {context_};
 }
 
-query_from_intermediate query_from_intermediate::join_left(std::vector<join_data> &data_vector)
+query_from_intermediate query_from_intermediate::join_left(std::vector<join_data> &data_vector) {
-{
+  for (auto &[join_table, condition] : data_vector) {
-  for (auto &data : data_vector) {
+    context_->parts.push_back(std::make_unique<internal::query_join_part>(*join_table));
-    context_->parts.push_back(std::make_unique<internal::query_join_part>(*data.join_table));
+    context_->parts.push_back(std::make_unique<internal::query_on_part>(std::move(condition)));
-    context_->parts.push_back(std::make_unique<internal::query_on_part>(std::move(data.condition)));
   }
   return {context_};
 }
 
-query_where_intermediate query_from_intermediate::where_clause(std::unique_ptr<basic_condition> &&cond)
+query_where_intermediate query_from_intermediate::where( std::unique_ptr<abstract_criteria>&& cond ) {
-{
+    return where_clause(std::move(cond));
+}
+
+query_where_intermediate query_from_intermediate::where_clause(std::unique_ptr<abstract_criteria> &&cond) {
   if (cond) {
     context_->parts.push_back(std::make_unique<internal::query_where_part>(std::move(cond)));
   }
   return {context_};
 }
 
-query_group_by_intermediate query_from_intermediate::group_by(const sql::column &col)
+query_group_by_intermediate query_from_intermediate::group_by(const sql::column &col) {
-{
   context_->parts.push_back(std::make_unique<internal::query_group_by_part>(col));
   return {context_};
 }
 
-query_order_by_intermediate query_from_intermediate::order_by(const sql::column &col)
+query_order_by_intermediate query_from_intermediate::order_by(const sql::column &col) {
-{
   context_->parts.push_back(std::make_unique<internal::query_order_by_part>(col));
   return {context_};
 }

source/orm/query/intermediates/query_join_intermediate.cpp

@@ -4,8 +4,11 @@
 
 namespace matador::query {
 
-query_on_intermediate query_join_intermediate::on_clause(std::unique_ptr<basic_condition> &&cond)
+query_on_intermediate query_join_intermediate::on( std::unique_ptr<abstract_criteria>&& cond ) {
-{
+    return on_clause(std::move(cond));
+}
+
+query_on_intermediate query_join_intermediate::on_clause(std::unique_ptr<abstract_criteria> &&cond) {
   context_->parts.push_back(std::make_unique<internal::query_on_part>(std::move(cond)));
   return {context_};
 }

source/orm/query/intermediates/query_set_intermediate.cpp

@@ -4,7 +4,7 @@
 
 namespace matador::query {
 
-query_execute_where_intermediate query_set_intermediate::where_clause(std::unique_ptr<basic_condition> &&cond)
+query_execute_where_intermediate query_set_intermediate::where_clause(std::unique_ptr<abstract_criteria> &&cond)
 {
   context_->parts.push_back(std::make_unique<internal::query_where_part>(std::move(cond)));
   return {context_};

source/orm/query/internal/query_parts.cpp

@@ -46,11 +46,11 @@ void query_join_part::accept(query_part_visitor &visitor)
   visitor.visit(*this);
 }
 
-query_on_part::query_on_part(std::unique_ptr<basic_condition> &&cond)
+query_on_part::query_on_part(std::unique_ptr<abstract_criteria> &&cond)
 : query_part(sql::dialect_token::On)
 , condition_(std::move(cond)) {}
 
-const basic_condition &query_on_part::condition() const
+const abstract_criteria &query_on_part::condition() const
 {
   return *condition_;
 }
@@ -60,7 +60,7 @@ void query_on_part::accept(query_part_visitor &visitor)
   visitor.visit(*this);
 }
 
-query_where_part::query_where_part(std::unique_ptr<basic_condition> &&cond)
+query_where_part::query_where_part(std::unique_ptr<abstract_criteria> &&cond)
 : query_part(sql::dialect_token::Where)
 , condition_(std::move(cond)) {}
 
@@ -69,7 +69,7 @@ void query_where_part::accept(query_part_visitor &visitor)
   visitor.visit(*this);
 }
 
-const basic_condition &query_where_part::condition() const
+const abstract_criteria &query_where_part::condition() const
 {
   return *condition_;
 }

source/orm/query/query_compiler.cpp

@@ -2,6 +2,7 @@
 
 #include "matador/query/attribute_string_writer.hpp"
 #include "matador/query/query_data.hpp"
+#include "matador/query/criteria_evaluator.hpp"
 
 #include "matador/query/internal/basic_type_to_string_visitor.hpp"
 #include "matador/query/internal/query_parts.hpp"
@@ -16,7 +17,7 @@ namespace matador::query {
 
 sql::query_context query_compiler::compile(const query_data &data,
                                       const sql::dialect &d,
-                                      std::optional<std::reference_wrapper<const sql::connection_impl>> conn)
+                                      const std::optional<std::reference_wrapper<const sql::connection_impl>> conn)
 {
   data_ = &data;
   dialect_ = &d;
@@ -86,20 +87,19 @@ void query_compiler::visit(internal::query_join_part &join_part)
   query_.sql += " " + query_compiler::build_table_name(join_part.token(), *dialect_, join_part.table());
 }
 
-void query_compiler::visit(internal::query_on_part &on_part)
+void query_compiler::visit(internal::query_on_part &on_part) {
-{
+  criteria_evaluator evaluator(*dialect_, query_);
   query_.sql += " " + dialect_->token_at(sql::dialect_token::On) +
-                " " + on_part.condition().evaluate(*dialect_, query_);
+                " " + evaluator.evaluate(on_part.condition());
 }
 
-void query_compiler::visit(internal::query_where_part &where_part)
+void query_compiler::visit(internal::query_where_part &where_part) {
-{
+  criteria_evaluator evaluator(*dialect_, query_);
   query_.sql += " " + dialect_->token_at(sql::dialect_token::Where) +
-                " " + where_part.condition().evaluate(*dialect_, query_);
+                " " + evaluator.evaluate(where_part.condition());
 }
 
-void query_compiler::visit(internal::query_group_by_part &group_by_part)
+void query_compiler::visit(internal::query_group_by_part &group_by_part) {
-{
   query_.sql += " " + dialect_->token_at(sql::dialect_token::GroupBy) + " " + dialect_->prepare_identifier(group_by_part.column());
 }
 

test/orm/CMakeLists.txt

@@ -15,7 +15,6 @@ add_executable(OrmTests
   backend/test_statement.hpp
   orm/SessionInsertBuilderTest.cpp
   orm/SessionQueryBuilderTest.cpp
-  query/ConditionTests.cpp
   query/QueryBuilderTest.cpp
   query/QueryFixture.cpp
   query/QueryFixture.hpp

test/orm/orm/SessionQueryBuilderTest.cpp

@@ -6,6 +6,7 @@
 #include "matador/sql/column.hpp"
 #include "matador/sql/table.hpp"
 
+#include "matador/query/criteria_evaluator.hpp"
 #include "matador/query/query.hpp"
 
 #include "matador/orm/session_query_builder.hpp"
@@ -62,15 +63,16 @@ TEST_CASE("Create sql query data for entity with eager has one", "[query][entity
 
   query_context qc;
   size_t index{0};
-  for (const auto &jd : data->joins) {
+  criteria_evaluator evaluator(db.dialect(), qc);
-    REQUIRE(jd.join_table->name == expected_join_data[index].first);
+  for (const auto &[join_table, condition] : data->joins) {
-    REQUIRE(jd.condition->evaluate(db.dialect(), qc) == expected_join_data[index].second);
+    REQUIRE(join_table->name == expected_join_data[index].first);
+    REQUIRE(evaluator.evaluate(*condition) == expected_join_data[index].second);
     ++index;
   }
 
-  REQUIRE(data->where_clause);
+  REQUIRE(data->where_clause.get());
-  auto cond = data->where_clause->evaluate(db.dialect(), qc);
+  auto cond = evaluator.evaluate(*data->where_clause);
-  REQUIRE(cond == R"("t01"."id" = 17)");
+  REQUIRE(cond == R"("t01"."id" = ?)");
 }
 
 TEST_CASE("Create sql query data for entity with eager belongs to", "[query][entity][builder]") {
@@ -111,15 +113,16 @@ TEST_CASE("Create sql query data for entity with eager belongs to", "[query][ent
 
   query_context qc;
   size_t index{0};
+  criteria_evaluator evaluator(db.dialect(), qc);
   for (const auto &jd : data->joins) {
     REQUIRE(jd.join_table->name == expected_join_data[index].first);
-    REQUIRE(jd.condition->evaluate(db.dialect(), qc) == expected_join_data[index].second);
+    REQUIRE(evaluator.evaluate(*jd.condition) == expected_join_data[index].second);
     ++index;
   }
 
-  REQUIRE(data->where_clause);
+  REQUIRE(data->where_clause.get());
-  auto cond = data->where_clause->evaluate(db.dialect(), qc);
+  auto cond = evaluator.evaluate(*data->where_clause);
-  REQUIRE(cond == R"("t01"."id" = 17)");
+  REQUIRE(cond == R"("t01"."id" = ?)");
 
   auto q = matador::query::query::select(data->columns)
     .from(data->root_table->name);
@@ -180,15 +183,16 @@ TEST_CASE("Create sql query data for entity with eager has many belongs to", "[q
 
   query_context qc;
   size_t index{0};
+  criteria_evaluator evaluator(db.dialect(), qc);
   for (const auto &jd : data->joins) {
     REQUIRE(jd.join_table->name == expected_join_data[index].first);
-    REQUIRE(jd.condition->evaluate(db.dialect(), qc) == expected_join_data[index].second);
+    REQUIRE(evaluator.evaluate(*jd.condition) == expected_join_data[index].second);
     ++index;
   }
 
-  REQUIRE(data->where_clause);
+  REQUIRE(data->where_clause.get());
-  auto cond = data->where_clause->evaluate(db.dialect(), qc);
+  auto cond = evaluator.evaluate(*data->where_clause);
-  REQUIRE(cond == R"("t01"."order_id" = 17)");
+  REQUIRE(cond == R"("t01"."order_id" = ?)");
 }
 
 TEST_CASE("Create sql query data for entity with eager many to many", "[query][entity][builder]") {
@@ -225,15 +229,16 @@ TEST_CASE("Create sql query data for entity with eager many to many", "[query][e
 
   query_context qc;
   size_t index{0};
+  criteria_evaluator evaluator(db.dialect(), qc);
   for (const auto &jd : data->joins) {
     REQUIRE(jd.join_table->name == expected_join_data[index].first);
-    REQUIRE(jd.condition->evaluate(db.dialect(), qc) == expected_join_data[index].second);
+    REQUIRE(evaluator.evaluate(*jd.condition) == expected_join_data[index].second);
     ++index;
   }
 
-  REQUIRE(data->where_clause);
+  REQUIRE(data->where_clause.get());
-  auto cond = data->where_clause->evaluate(db.dialect(), qc);
+  auto cond = evaluator.evaluate(*data->where_clause);
-  REQUIRE(cond == R"("t01"."id" = 17)");
+  REQUIRE(cond == R"("t01"."id" = ?)");
 }
 
 TEST_CASE("Create sql query data for entity with eager many to many (inverse part)", "[query][entity][builder]") {
@@ -270,15 +275,16 @@ TEST_CASE("Create sql query data for entity with eager many to many (inverse par
 
   query_context qc;
   size_t index{0};
+  criteria_evaluator evaluator(db.dialect(), qc);
   for (const auto &jd : data->joins) {
     REQUIRE(jd.join_table->name == expected_join_data[index].first);
-    REQUIRE(jd.condition->evaluate(db.dialect(), qc) == expected_join_data[index].second);
+    REQUIRE(evaluator.evaluate(*jd.condition) == expected_join_data[index].second);
     ++index;
   }
 
-  REQUIRE(data->where_clause);
+  REQUIRE(data->where_clause.get());
-  auto cond = data->where_clause->evaluate(db.dialect(), qc);
+  auto cond = evaluator.evaluate(*data->where_clause);
-  REQUIRE(cond == R"("t01"."id" = 17)");
+  REQUIRE(cond == R"("t01"."id" = ?)");
 }
 
 TEST_CASE("Test eager relationship", "[session][eager]") {

test/orm/query/QueryBuilderTest.cpp

@@ -2,7 +2,7 @@
 
 #include "QueryFixture.hpp"
 
-#include <matador/query/condition.hpp>
+#include <matador/query/criteria.hpp>
 #include <matador/query/query.hpp>
 
 #include "matador/object/attribute_definition_generator.hpp"