added sequence-specific code (create, drop and nextval)

include/matador/object/object_ptr.hpp

@@ -48,6 +48,11 @@ public:
   [[nodiscard]] const utils::identifier &primary_key() const { return proxy_->primary_key(); }
   void primary_key(const utils::identifier &pk) { proxy_->primary_key(pk); }
 
+  [[nodiscard]] bool is_persistent() const { return proxy_->is_persistent(); }
+  [[nodiscard]] bool is_transient() const { return !proxy_->is_transient(); }
+  [[nodiscard]] bool is_detached() const { return !proxy_->is_detached(); }
+  [[nodiscard]] bool is_removed() const { return !proxy_->is_removed(); }
+
 private:
   std::shared_ptr<object_proxy<Type> > proxy_{};
 };

include/matador/query/intermediates/query_drop_intermediate.hpp

@@ -11,7 +11,8 @@ public:
   query_drop_intermediate();
 
   executable_query table(const table &tab);
-  // executable_query schema(const std::string &schema_name);
+  executable_query sequence(const std::string &sequence_name);
+  executable_query schema(const std::string &schema_name);
 };
 
 }

include/matador/query/intermediates/query_select_intermediate.hpp

@@ -17,6 +17,8 @@ class query_select_intermediate : public query_intermediate
 public:
   explicit query_select_intermediate(const std::vector<table_column>& columns);
 
+  fetchable_query nextval(const std::string& sequence_name);
+
   template<typename... Tables>
   query_from_intermediate from(const Tables&... tables) {
     std::vector<table> v { tables... };

include/matador/query/internal/query_parts.hpp

@@ -126,6 +126,20 @@ private:
   std::vector<table_column> columns_;
 };
 
+class query_select_nextval_part final : public query_part {
+public:
+  explicit query_select_nextval_part(std::string sequence_name);
+
+  [[nodiscard]] const std::string& sequence_name() const;
+
+private:
+  void accept(query_part_visitor &visitor) override;
+
+private:
+  std::string sequence_name_;
+};
+
+
 /**
  * Represents the SQL FROM part
  */
@@ -443,6 +457,19 @@ private:
   std::list<table_constraint> constraints_;
 };
 
+class query_create_sequence_part final : public query_part {
+public:
+  explicit query_create_sequence_part(std::string sequence_name);
+
+  [[nodiscard]] const std::string& sequence_name() const;
+
+private:
+  void accept(query_part_visitor &visitor) override;
+
+private:
+  std::string sequence_name_;
+};
+
 class query_create_schema_part final : public query_part {
 public:
   explicit query_create_schema_part(std::string schema);
@@ -479,6 +506,19 @@ private:
   class table table_;
 };
 
+class query_drop_sequence_part final : public query_part {
+public:
+  explicit query_drop_sequence_part(std::string sequence_name);
+
+  [[nodiscard]] const std::string& sequence_name() const;
+
+private:
+  void accept(query_part_visitor &visitor) override;
+
+private:
+  std::string sequence_name_;
+};
+
 class query_drop_schema_part final : public query_part {
 public:
   explicit query_drop_schema_part(std::string schema_);

include/matador/query/query_builder.hpp

@@ -45,6 +45,7 @@ protected:
   void visit(internal::query_drop_key_constraint_part_by_constraint &part) override;
 
   void visit(internal::query_select_part &part) override;
+  void visit(internal::query_select_nextval_part &part) override;
   void visit(internal::query_from_part &part) override;
   void visit(internal::query_join_table_part &part) override;
   void visit(internal::query_join_query_part &part) override;
@@ -72,10 +73,12 @@ protected:
   void visit(internal::query_create_table_part &part) override;
   void visit(internal::query_create_table_columns_part& part) override;
   void visit(internal::query_create_table_constraints_part& part) override;
+  void visit(internal::query_create_sequence_part &part) override;
   void visit(internal::query_create_schema_part& part) override;
 
   void visit(internal::query_drop_part &part) override;
   void visit(internal::query_drop_table_part &part) override;
+  void visit(internal::query_drop_sequence_part &part) override;
   void visit(internal::query_drop_schema_part& part) override;
 
   static std::string build_table_name(sql::dialect_token token, const sql::dialect &d, const table& t);

include/matador/query/query_part_visitor.hpp

@@ -17,6 +17,7 @@ class query_add_foreign_key_reference_part;
 class query_add_primary_key_constraint_part;
 // Select
 class query_select_part;
+class query_select_nextval_part;
 class query_from_part;
 class query_join_table_part;
 class query_join_query_part;
@@ -45,12 +46,16 @@ class query_create_part;
 class query_create_table_part;
 class query_create_table_columns_part;
 class query_create_table_constraints_part;
+// Create Sequence
+class query_create_sequence_part;
 // Create schema
 class query_create_schema_part;
 // Drop common
 class query_drop_part;
 // Drop table
 class query_drop_table_part;
+// Drop sequence
+class query_drop_sequence_part;
 // Drop schema
 class query_drop_schema_part;
 }
@@ -70,6 +75,7 @@ public:
   virtual void visit(internal::query_drop_key_constraint_part_by_constraint &part) = 0;
 
   virtual void visit(internal::query_select_part &part) = 0;
+  virtual void visit(internal::query_select_nextval_part &part) = 0;
   virtual void visit(internal::query_from_part &part) = 0;
   virtual void visit(internal::query_join_table_part &part) = 0;
   virtual void visit(internal::query_join_query_part &part) = 0;
@@ -97,10 +103,12 @@ public:
   virtual void visit(internal::query_create_table_part &part) = 0;
   virtual void visit(internal::query_create_table_columns_part &part) = 0;
   virtual void visit(internal::query_create_table_constraints_part &part) = 0;
+  virtual void visit(internal::query_create_sequence_part &part) = 0;
   virtual void visit(internal::query_create_schema_part &part) = 0;
 
   virtual void visit(internal::query_drop_part &part) = 0;
   virtual void visit(internal::query_drop_table_part &part) = 0;
+  virtual void visit(internal::query_drop_sequence_part &part) = 0;
   virtual void visit(internal::query_drop_schema_part &part) = 0;
 };
 

include/matador/sql/dialect.hpp

@@ -145,6 +145,7 @@ public:
   [[nodiscard]] const std::string& end_binary_data() const;
   [[nodiscard]] const std::string& end_quote() const;
   [[nodiscard]] const std::string& end_string_data() const;
+  [[nodiscard]] const std::string& exists() const;
   [[nodiscard]] const std::string& foreign_key() const;
   [[nodiscard]] const std::string& from() const;
   [[nodiscard]] const std::string& group_by() const;
@@ -157,6 +158,7 @@ public:
   [[nodiscard]] const std::string& join() const;
   [[nodiscard]] const std::string& like() const;
   [[nodiscard]] const std::string& limit() const;
+  [[nodiscard]] const std::string& nextval() const;
   [[nodiscard]] const std::string& not_() const;
   [[nodiscard]] const std::string& not_null() const;
   [[nodiscard]] const std::string& offset() const;
@@ -171,6 +173,7 @@ public:
   [[nodiscard]] const std::string& schema() const;
   [[nodiscard]] const std::string& select() const;
   [[nodiscard]] const std::string& set() const;
+  [[nodiscard]] const std::string& sequence() const;
   [[nodiscard]] const std::string& start_quote() const;
   [[nodiscard]] const std::string& string_quote() const;
   [[nodiscard]] const std::string& table() const;
@@ -192,6 +195,7 @@ private:
 
   std::string default_schema_name_;
 
+
   token_to_string_map tokens_ {
     {dialect_token::AddConstraint,  "ADD CONSTRAINT"},
     {dialect_token::Alter,       "ALTER"},
@@ -215,6 +219,7 @@ private:
     {dialect_token::EndBinaryData, "'"},
     {dialect_token::EndQuote, "\""},
     {dialect_token::EndStringData, "'"},
+    {dialect_token::Exists,      "EXISTS"},
     {dialect_token::ForeignKey,  "FOREIGN KEY"},
     {dialect_token::From,        "FROM"},
     {dialect_token::GroupBy,     "GROUP BY"},
@@ -227,6 +232,7 @@ private:
     {dialect_token::Join,        "LEFT JOIN"},
     {dialect_token::Like,        "LIKE"},
     {dialect_token::Limit,       "LIMIT"},
+    {dialect_token::NextVal,     "NEXTVAL"},
     {dialect_token::None,        ""},
     {dialect_token::Not,         "NOT"},
     {dialect_token::NotNull,     "NOT NULL"},
@@ -242,6 +248,7 @@ private:
     {dialect_token::Schema,      "SCHEMA"},
     {dialect_token::Select,      "SELECT"},
     {dialect_token::Set,         "SET"},
+    {dialect_token::Sequence,    "SEQUENCE"},
     {dialect_token::StartQuote,  "\""},
     {dialect_token::StringQuote, "'"},
     {dialect_token::Table,       "TABLE"},
@@ -250,7 +257,6 @@ private:
     {dialect_token::Values,      "VALUES"},
     {dialect_token::Where,       "WHERE"}
   };
-
   data_type_to_string_map data_types_ {
     {utils::basic_type::Int8, "TINYINT"},
     {utils::basic_type::Int16, "SMALLINT"},

include/matador/sql/dialect_token.hpp

@@ -29,6 +29,7 @@ enum class dialect_token : uint8_t {
   EndBinaryData,
   EndQuote,
   EndStringData,
+  Exists,
   ForeignKey,
   From,
   GroupBy,
@@ -41,6 +42,7 @@ enum class dialect_token : uint8_t {
   Join,
   Like,
   Limit,
+  NextVal,
   None,
   Not,
   NotNull,
@@ -56,6 +58,7 @@ enum class dialect_token : uint8_t {
   Schema,
   Select,
   Set,
+  Sequence,
   StartQuote,
   StringQuote,
   Table,

include/matador/sql/query_context.hpp

@@ -13,6 +13,7 @@ enum class sql_command {
   Create,
   CreateTable,
   CreateSchema,
+  CreateSequence,
   CreateDatabase,
   Update,
   Insert,
@@ -21,6 +22,7 @@ enum class sql_command {
   Drop,
   DropTable,
   DropSchema,
+  DropSequence,
   DropDatabase,
   Alter,
   AlterTable,