Merge pull request #20 from sunboyy/update-model

Add functionality to update the whole model

internal/mongo/errors.go

@@ -2,6 +2,8 @@ package mongo
 
 import (
 	"fmt"
+
+	"github.com/sunboyy/repogen/internal/spec"
 )
 
 // NewOperationNotSupportedError creates operationNotSupportedError
@@ -29,3 +31,16 @@ type bsonTagNotFoundError struct {
 func (err bsonTagNotFoundError) Error() string {
 	return fmt.Sprintf("bson tag of field '%s' not found", err.FieldName)
 }
+
+// NewUpdateTypeNotSupportedError creates updateTypeNotSupportedError
+func NewUpdateTypeNotSupportedError(update spec.Update) error {
+	return updateTypeNotSupportedError{Update: update}
+}
+
+type updateTypeNotSupportedError struct {
+	Update spec.Update
+}
+
+func (err updateTypeNotSupportedError) Error() string {
+	return fmt.Sprintf("update type %s not supported", err.Update.Name())
+}

internal/mongo/errors_test.go

@@ -12,6 +12,17 @@ type ErrorTestCase struct {
 	ExpectedString string
 }
 
+type StubUpdate struct {
+}
+
+func (update StubUpdate) Name() string {
+	return "Stub"
+}
+
+func (update StubUpdate) NumberOfArguments() int {
+	return 1
+}
+
 func TestError(t *testing.T) {
 	testTable := []ErrorTestCase{
 		{
@@ -24,6 +35,11 @@ func TestError(t *testing.T) {
 			Error:          mongo.NewBsonTagNotFoundError("AccessToken"),
 			ExpectedString: "bson tag of field 'AccessToken' not found",
 		},
+		{
+			Name:           "UpdateTypeNotSupportedError",
+			Error:          mongo.NewUpdateTypeNotSupportedError(StubUpdate{}),
+			ExpectedString: "update type Stub not supported",
+		},
 	}
 
 	for _, testCase := range testTable {

internal/mongo/generator.go

@@ -117,14 +117,10 @@ func (g RepositoryGenerator) generateFindImplementation(operation spec.FindOpera
 }
 
 func (g RepositoryGenerator) generateUpdateImplementation(operation spec.UpdateOperation) (string, error) {
-	var fields []updateField
-	for _, field := range operation.Fields {
-		bsonTag, err := g.bsonTagFromFieldName(field.Name)
+	update, err := g.getMongoUpdate(operation.Update)
 	if err != nil {
 		return "", err
 	}
-		fields = append(fields, updateField{BsonTag: bsonTag, ParamIndex: field.ParamIndex})
-	}
 
 	querySpec, err := g.mongoQuerySpec(operation.Query)
 	if err != nil {
@@ -132,7 +128,7 @@ func (g RepositoryGenerator) generateUpdateImplementation(operation spec.UpdateO
 	}
 
 	tmplData := mongoUpdateTemplateData{
-		UpdateFields: fields,
+		Update:    update,
 		QuerySpec: querySpec,
 	}
 
@@ -142,6 +138,25 @@ func (g RepositoryGenerator) generateUpdateImplementation(operation spec.UpdateO
 	return generateFromTemplate("mongo_repository_updatemany", updateManyTemplate, tmplData)
 }
 
+func (g RepositoryGenerator) getMongoUpdate(updateSpec spec.Update) (update, error) {
+	switch updateSpec := updateSpec.(type) {
+	case spec.UpdateModel:
+		return updateModel{}, nil
+	case spec.UpdateFields:
+		var update updateFields
+		for _, field := range updateSpec {
+			bsonTag, err := g.bsonTagFromFieldName(field.Name)
+			if err != nil {
+				return nil, err
+			}
+			update.Fields = append(update.Fields, updateField{BsonTag: bsonTag, ParamIndex: field.ParamIndex})
+		}
+		return update, nil
+	default:
+		return nil, NewUpdateTypeNotSupportedError(updateSpec)
+	}
+}
+
 func (g RepositoryGenerator) generateDeleteImplementation(operation spec.DeleteOperation) (string, error) {
 	querySpec, err := g.mongoQuerySpec(operation.Query)
 	if err != nil {

internal/mongo/generator_test.go

@@ -712,6 +712,43 @@ func (r *UserRepositoryMongo) FindByEnabledFalse(arg0 context.Context) ([]*UserM
 
 func TestGenerateMethod_Update(t *testing.T) {
 	testTable := []GenerateMethodTestCase{
+		{
+			Name: "update model method",
+			MethodSpec: spec.MethodSpec{
+				Name: "UpdateByID",
+				Params: []code.Param{
+					{Name: "ctx", Type: code.ExternalType{PackageAlias: "context", Name: "Context"}},
+					{Name: "model", Type: code.PointerType{ContainedType: code.SimpleType("UserModel")}},
+					{Name: "id", Type: code.ExternalType{PackageAlias: "primitive", Name: "ObjectID"}},
+				},
+				Returns: []code.Type{
+					code.SimpleType("bool"),
+					code.SimpleType("error"),
+				},
+				Operation: spec.UpdateOperation{
+					Update: spec.UpdateModel{},
+					Mode:   spec.QueryModeOne,
+					Query: spec.QuerySpec{
+						Predicates: []spec.Predicate{
+							{Field: "ID", Comparator: spec.ComparatorEqual, ParamIndex: 2},
+						},
+					},
+				},
+			},
+			ExpectedCode: `
+func (r *UserRepositoryMongo) UpdateByID(arg0 context.Context, arg1 *UserModel, arg2 primitive.ObjectID) (bool, error) {
+	result, err := r.collection.UpdateOne(arg0, bson.M{
+		"_id": arg2,
+	}, bson.M{
+		"$set": arg1,
+	})
+	if err != nil {
+		return false, err
+	}
+	return result.MatchedCount > 0, err
+}
+`,
+		},
 		{
 			Name: "simple update one method",
 			MethodSpec: spec.MethodSpec{
@@ -726,7 +763,7 @@ func TestGenerateMethod_Update(t *testing.T) {
 					code.SimpleType("error"),
 				},
 				Operation: spec.UpdateOperation{
-					Fields: []spec.UpdateField{
+					Update: spec.UpdateFields{
 						{Name: "Age", ParamIndex: 1},
 					},
 					Mode: spec.QueryModeOne,
@@ -767,7 +804,7 @@ func (r *UserRepositoryMongo) UpdateAgeByID(arg0 context.Context, arg1 int, arg2
 					code.SimpleType("error"),
 				},
 				Operation: spec.UpdateOperation{
-					Fields: []spec.UpdateField{
+					Update: spec.UpdateFields{
 						{Name: "Age", ParamIndex: 1},
 					},
 					Mode: spec.QueryModeMany,
@@ -1629,7 +1666,7 @@ func TestGenerateMethod_Invalid(t *testing.T) {
 					code.SimpleType("error"),
 				},
 				Operation: spec.UpdateOperation{
-					Fields: []spec.UpdateField{
+					Update: spec.UpdateFields{
 						{Name: "AccessToken", ParamIndex: 1},
 					},
 					Mode: spec.QueryModeOne,
@@ -1642,6 +1679,31 @@ func TestGenerateMethod_Invalid(t *testing.T) {
 			},
 			ExpectedError: mongo.NewBsonTagNotFoundError("AccessToken"),
 		},
+		{
+			Name: "update type not supported",
+			Method: spec.MethodSpec{
+				Name: "UpdateAgeByID",
+				Params: []code.Param{
+					{Type: code.ExternalType{PackageAlias: "context", Name: "Context"}},
+					{Type: code.SimpleType("int")},
+					{Type: code.ExternalType{PackageAlias: "primitive", Name: "ObjectID"}},
+				},
+				Returns: []code.Type{
+					code.SimpleType("bool"),
+					code.SimpleType("error"),
+				},
+				Operation: spec.UpdateOperation{
+					Update: StubUpdate{},
+					Mode:   spec.QueryModeOne,
+					Query: spec.QuerySpec{
+						Predicates: []spec.Predicate{
+							{Field: "ID", Comparator: spec.ComparatorEqual, ParamIndex: 2},
+						},
+					},
+				},
+			},
+			ExpectedError: mongo.NewUpdateTypeNotSupportedError(StubUpdate{}),
+		},
 	}
 
 	for _, testCase := range testTable {

internal/mongo/models.go

@@ -12,6 +12,30 @@ type updateField struct {
 	ParamIndex int
 }
 
+type update interface {
+	Code() string
+}
+
+type updateModel struct {
+}
+
+func (u updateModel) Code() string {
+	return `		"$set": arg1,`
+}
+
+type updateFields struct {
+	Fields []updateField
+}
+
+func (u updateFields) Code() string {
+	lines := []string{`		"$set": bson.M{`}
+	for _, field := range u.Fields {
+		lines = append(lines, fmt.Sprintf(`			"%s": arg%d,`, field.BsonTag, field.ParamIndex))
+	}
+	lines = append(lines, `		},`)
+	return strings.Join(lines, "\n")
+}
+
 type querySpec struct {
 	Operator   spec.Operator
 	Predicates []predicate

internal/mongo/templates.go

@@ -112,16 +112,14 @@ const findManyTemplate = `	cursor, err := r.collection.Find(arg0, bson.M{
 	return entities, nil`
 
 type mongoUpdateTemplateData struct {
-	UpdateFields []updateField
+	Update    update
 	QuerySpec querySpec
 }
 
 const updateOneTemplate = `	result, err := r.collection.UpdateOne(arg0, bson.M{
 {{.QuerySpec.Code}}
 	}, bson.M{
-		"$set": bson.M{
-{{range $index, $element := .UpdateFields}}			"{{$element.BsonTag}}": arg{{$element.ParamIndex}},
-{{end}}		},
+{{.Update.Code}}
 	})
 	if err != nil {
 		return false, err
@@ -131,9 +129,7 @@ const updateOneTemplate = `	result, err := r.collection.UpdateOne(arg0, bson.M{
 const updateManyTemplate = `	result, err := r.collection.UpdateMany(arg0, bson.M{
 {{.QuerySpec.Code}}
 	}, bson.M{
-		"$set": bson.M{
-{{range $index, $element := .UpdateFields}}			"{{$element.BsonTag}}": arg{{$element.ParamIndex}},
-{{end}}		},
+{{.Update.Code}}
 	})
 	if err != nil {
 		return 0, err

internal/spec/models.go

@@ -49,11 +49,44 @@ func (o FindOperation) Name() string {
 
 // UpdateOperation is a method specification for update operations
 type UpdateOperation struct {
-	Fields []UpdateField
+	Update Update
 	Mode   QueryMode
 	Query  QuerySpec
 }
 
+// Update is an interface of update operation type
+type Update interface {
+	Name() string
+	NumberOfArguments() int
+}
+
+// UpdateFields is a type of update operation that update specific fields
+type UpdateFields []UpdateField
+
+// Name returns UpdateFields name 'Fields'
+func (u UpdateFields) Name() string {
+	return "Fields"
+}
+
+// NumberOfArguments returns number of update fields
+func (u UpdateFields) NumberOfArguments() int {
+	return len(u)
+}
+
+// UpdateModel is a type of update operation that update the whole model
+type UpdateModel struct {
+}
+
+// Name returns UpdateModel name 'Model'
+func (u UpdateModel) Name() string {
+	return "Model"
+}
+
+// NumberOfArguments returns 1
+func (u UpdateModel) NumberOfArguments() int {
+	return 1
+}
+
 // Name returns "Update" operation name
 func (o UpdateOperation) Name() string {
 	return "Update"

internal/spec/models_test.go

@@ -43,3 +43,29 @@ func TestOperationName(t *testing.T) {
 		})
 	}
 }
+
+type UpdateTypeTestCase struct {
+	Update       spec.Update
+	ExpectedName string
+}
+
+func TestUpdateTypeName(t *testing.T) {
+	testTable := []UpdateTypeTestCase{
+		{
+			Update:       spec.UpdateModel{},
+			ExpectedName: "Model",
+		},
+		{
+			Update:       spec.UpdateFields{},
+			ExpectedName: "Fields",
+		},
+	}
+
+	for _, testCase := range testTable {
+		t.Run(testCase.ExpectedName, func(t *testing.T) {
+			if testCase.Update.Name() != testCase.ExpectedName {
+				t.Errorf("Expected = %v\nReceived = %v", testCase.ExpectedName, testCase.Update.Name())
+			}
+		})
+	}
+}

internal/spec/parser.go

@@ -169,18 +169,52 @@ func (p interfaceMethodParser) parseUpdateOperation(tokens []string) (Operation,
 		return nil, err
 	}
 
-	updateFieldTokens, queryTokens := p.splitUpdateFieldAndQueryTokens(tokens)
+	if err := p.validateContextParam(); err != nil {
+		return nil, err
+	}
+
+	updateTokens, queryTokens := p.splitUpdateAndQueryTokens(tokens)
+
+	update, err := p.parseUpdate(updateTokens)
+	if err != nil {
+		return nil, err
+	}
+
+	querySpec, err := parseQuery(queryTokens, 1+update.NumberOfArguments())
+	if err != nil {
+		return nil, err
+	}
+
+	if err := p.validateQueryFromParams(p.Method.Params[update.NumberOfArguments()+1:], querySpec); err != nil {
+		return nil, err
+	}
+
+	return UpdateOperation{
+		Update: update,
+		Mode:   mode,
+		Query:  querySpec,
+	}, nil
+}
+
+func (p interfaceMethodParser) parseUpdate(tokens []string) (Update, error) {
+	if len(tokens) == 0 {
+		requiredType := code.PointerType{ContainedType: p.StructModel.ReferencedType()}
+		if len(p.Method.Params) <= 1 || p.Method.Params[1].Type != requiredType {
+			return nil, InvalidUpdateFieldsError
+		}
+		return UpdateModel{}, nil
+	}
 
 	paramIndex := 1
-	var fields []UpdateField
+	var update UpdateFields
 	var aggregatedToken string
-	for _, token := range updateFieldTokens {
+	for _, token := range tokens {
 		if token != "And" {
 			aggregatedToken += token
 		} else if len(aggregatedToken) == 0 {
 			return nil, InvalidUpdateFieldsError
 		} else {
-			fields = append(fields, UpdateField{Name: aggregatedToken, ParamIndex: paramIndex})
+			update = append(update, UpdateField{Name: aggregatedToken, ParamIndex: paramIndex})
 			paramIndex++
 			aggregatedToken = ""
 		}
@@ -188,41 +222,24 @@ func (p interfaceMethodParser) parseUpdateOperation(tokens []string) (Operation,
 	if len(aggregatedToken) == 0 {
 		return nil, InvalidUpdateFieldsError
 	}
-	fields = append(fields, UpdateField{Name: aggregatedToken, ParamIndex: paramIndex})
+	update = append(update, UpdateField{Name: aggregatedToken, ParamIndex: paramIndex})
 
-	querySpec, err := parseQuery(queryTokens, 1+len(fields))
-	if err != nil {
-		return nil, err
-	}
-
-	if err := p.validateContextParam(); err != nil {
-		return nil, err
-	}
-
-	for _, field := range fields {
+	for _, field := range update {
 		structField, ok := p.StructModel.Fields.ByName(field.Name)
 		if !ok {
 			return nil, NewStructFieldNotFoundError(field.Name)
 		}
 
-		if structField.Type != p.Method.Params[field.ParamIndex].Type {
-			return nil, InvalidParamError
+		if len(p.Method.Params) <= field.ParamIndex || structField.Type != p.Method.Params[field.ParamIndex].Type {
+			return nil, InvalidUpdateFieldsError
 		}
 	}
 
-	if err := p.validateQueryFromParams(p.Method.Params[len(fields)+1:], querySpec); err != nil {
-		return nil, err
+	return update, nil
 }
 
-	return UpdateOperation{
-		Fields: fields,
-		Mode:   mode,
-		Query:  querySpec,
-	}, nil
-}
-
-func (p interfaceMethodParser) splitUpdateFieldAndQueryTokens(tokens []string) ([]string, []string) {
-	var updateFieldTokens []string
+func (p interfaceMethodParser) splitUpdateAndQueryTokens(tokens []string) ([]string, []string) {
+	var updateTokens []string
 	var queryTokens []string
 
 	for i, token := range tokens {
@@ -230,11 +247,11 @@ func (p interfaceMethodParser) splitUpdateFieldAndQueryTokens(tokens []string) (
 			queryTokens = tokens[i:]
 			break
 		} else {
-			updateFieldTokens = append(updateFieldTokens, token)
+			updateTokens = append(updateTokens, token)
 		}
 	}
 
-	return updateFieldTokens, queryTokens
+	return updateTokens, queryTokens
 }
 
 func (p interfaceMethodParser) parseDeleteOperation(tokens []string) (Operation, error) {

internal/spec/parser_test.go

@@ -453,6 +453,28 @@ func TestParseInterfaceMethod_Find(t *testing.T) {
 
 func TestParseInterfaceMethod_Update(t *testing.T) {
 	testTable := []ParseInterfaceMethodTestCase{
+		{
+			Name: "UpdateByArg",
+			Method: code.Method{
+				Name: "UpdateByID",
+				Params: []code.Param{
+					{Type: code.ExternalType{PackageAlias: "context", Name: "Context"}},
+					{Type: code.PointerType{ContainedType: code.SimpleType("UserModel")}},
+					{Type: code.ExternalType{PackageAlias: "primitive", Name: "ObjectID"}},
+				},
+				Returns: []code.Type{
+					code.SimpleType("bool"),
+					code.SimpleType("error"),
+				},
+			},
+			ExpectedOperation: spec.UpdateOperation{
+				Update: spec.UpdateModel{},
+				Mode:   spec.QueryModeOne,
+				Query: spec.QuerySpec{Predicates: []spec.Predicate{
+					{Field: "ID", Comparator: spec.ComparatorEqual, ParamIndex: 2},
+				}},
+			},
+		},
 		{
 			Name: "UpdateArgByArg one method",
 			Method: code.Method{
@@ -468,7 +490,7 @@ func TestParseInterfaceMethod_Update(t *testing.T) {
 				},
 			},
 			ExpectedOperation: spec.UpdateOperation{
-				Fields: []spec.UpdateField{
+				Update: spec.UpdateFields{
 					{Name: "Gender", ParamIndex: 1},
 				},
 				Mode: spec.QueryModeOne,
@@ -492,7 +514,7 @@ func TestParseInterfaceMethod_Update(t *testing.T) {
 				},
 			},
 			ExpectedOperation: spec.UpdateOperation{
-				Fields: []spec.UpdateField{
+				Update: spec.UpdateFields{
 					{Name: "Gender", ParamIndex: 1},
 				},
 				Mode: spec.QueryModeMany,
@@ -517,7 +539,7 @@ func TestParseInterfaceMethod_Update(t *testing.T) {
 				},
 			},
 			ExpectedOperation: spec.UpdateOperation{
-				Fields: []spec.UpdateField{
+				Update: spec.UpdateFields{
 					{Name: "Gender", ParamIndex: 1},
 					{Name: "City", ParamIndex: 2},
 				},
@@ -1279,6 +1301,9 @@ func TestParseInterfaceMethod_Update_Invalid(t *testing.T) {
 			Name: "update with no field provided",
 			Method: code.Method{
 				Name: "UpdateByID",
+				Params: []code.Param{
+					{Type: code.ExternalType{PackageAlias: "context", Name: "Context"}},
+				},
 				Returns: []code.Type{
 					code.SimpleType("bool"),
 					code.SimpleType("error"),
@@ -1290,6 +1315,9 @@ func TestParseInterfaceMethod_Update_Invalid(t *testing.T) {
 			Name: "misplaced And token in update fields",
 			Method: code.Method{
 				Name: "UpdateAgeAndAndGenderByID",
+				Params: []code.Param{
+					{Type: code.ExternalType{PackageAlias: "context", Name: "Context"}},
+				},
 				Returns: []code.Type{
 					code.SimpleType("bool"),
 					code.SimpleType("error"),
@@ -1301,6 +1329,10 @@ func TestParseInterfaceMethod_Update_Invalid(t *testing.T) {
 			Name: "update method without query",
 			Method: code.Method{
 				Name: "UpdateCity",
+				Params: []code.Param{
+					{Type: code.ExternalType{PackageAlias: "context", Name: "Context"}},
+					{Type: code.SimpleType("string")},
+				},
 				Returns: []code.Type{
 					code.SimpleType("bool"),
 					code.SimpleType("error"),
@@ -1312,6 +1344,10 @@ func TestParseInterfaceMethod_Update_Invalid(t *testing.T) {
 			Name: "ambiguous query",
 			Method: code.Method{
 				Name: "UpdateAgeByIDAndUsernameOrGender",
+				Params: []code.Param{
+					{Type: code.ExternalType{PackageAlias: "context", Name: "Context"}},
+					{Type: code.SimpleType("int")},
+				},
 				Returns: []code.Type{
 					code.SimpleType("int"),
 					code.SimpleType("error"),
@@ -1319,6 +1355,21 @@ func TestParseInterfaceMethod_Update_Invalid(t *testing.T) {
 			},
 			ExpectedError: spec.NewInvalidQueryError([]string{"By", "ID", "And", "Username", "Or", "Gender"}),
 		},
+		{
+			Name: "update model with invalid parameter",
+			Method: code.Method{
+				Name: "UpdateByID",
+				Params: []code.Param{
+					{Type: code.ExternalType{PackageAlias: "context", Name: "Context"}},
+					{Type: code.SimpleType("string")},
+				},
+				Returns: []code.Type{
+					code.SimpleType("bool"),
+					code.SimpleType("error"),
+				},
+			},
+			ExpectedError: spec.InvalidUpdateFieldsError,
+		},
 		{
 			Name: "no context parameter",
 			Method: code.Method{
@@ -1364,7 +1415,7 @@ func TestParseInterfaceMethod_Update_Invalid(t *testing.T) {
 					code.SimpleType("error"),
 				},
 			},
-			ExpectedError: spec.InvalidParamError,
+			ExpectedError: spec.InvalidUpdateFieldsError,
 		},
 		{
 			Name: "struct field does not match parameter in query",