Add builder

builder/operators.go

@@ -0,0 +1,60 @@
+package builder
+
+////////////////////////////////////////////////////////////////////////////////
+// Comparison Operators
+////////////////////////////////////////////////////////////////////////////////
+
+// Raw raw sql
+type Raw struct {
+	Value string
+	Args  []interface{} // TODO NamedArg
+}
+
+// Eq equal to
+type Eq struct {
+	Column Column
+	Value  interface{}
+}
+
+// Neq not equal to
+type Neq struct {
+	Column Column
+	Value  interface{}
+}
+
+// Gt greater than
+type Gt struct {
+	Column Column
+	Value  interface{}
+}
+
+// Gte greater than or equal to
+type Gte struct {
+	Column Column
+	Value  interface{}
+}
+
+// Lt less than
+type Lt struct {
+	Column Column
+	Value  interface{}
+}
+
+// Lte less than or equal to
+type Lte struct {
+	Column Column
+	Value  interface{}
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// Logical Operators
+////////////////////////////////////////////////////////////////////////////////
+
+// And TRUE if all the conditions is TRUE
+type And []Condition
+
+// Not TRUE if condition is false
+type Not Condition
+
+// Or TRUE if any of the conditions is TRUE
+type Or []Condition

builder/statement.go

@@ -0,0 +1,59 @@
+package builder
+
+// Column column type
+type Column = string
+
+// Statement GORM statement
+type Statement struct {
+	Dest        interface{}   // Insert, Select, Update, Delete
+	Table       string        // Insert, Select, Update, Delete
+	Select      []interface{} // Select
+	Joins       []Join        // Select
+	GroupBy     GroupBy       // Select
+	OrderBy     OrderBy       // Select
+	Preload     []Column      // Select
+	Limit       Limit         // Select, Update
+	Where       []Condition   // Select, Update, Delete
+	Assignments []Assignment  // Insert, Update
+	Returnnings []Column      // Insert, Update, Delete
+}
+
+// Condition query condition statement interface
+type Condition interface {
+	// ToSQL()
+}
+
+// Join join statement
+type Join struct {
+	Table        string
+	LocalField   string
+	ForeignField string
+	Conditions   []Condition
+}
+
+// GroupBy group by statement
+type GroupBy struct {
+	GroupByColumns []string
+	Having         []Condition
+}
+
+// OrderBy order by statement
+type OrderBy []OrderByColumn
+
+// OrderByColumn column used for order
+type OrderByColumn struct {
+	Name string
+	Asc  bool
+}
+
+// Limit limit statement
+type Limit struct {
+	Limit  int
+	Offset int
+}
+
+// Assignment assign statement
+type Assignment struct {
+	Column Column
+	Value  interface{}
+}