feat: support memo filter for mysql and postgres

plugin/filter/converter.go

@@ -0,0 +1,20 @@
+package filter
+
+import (
+	"strings"
+)
+
+type ConvertContext struct {
+	Buffer strings.Builder
+	Args   []any
+	// The offset of the next argument in the condition string.
+	// Mainly using for PostgreSQL.
+	ArgsOffset int
+}
+
+func NewConvertContext() *ConvertContext {
+	return &ConvertContext{
+		Buffer: strings.Builder{},
+		Args:   []any{},
+	}
+}

plugin/filter/expr.go

@@ -0,0 +1,39 @@
+package filter
+
+import (
+	"errors"
+
+	exprv1 "google.golang.org/genproto/googleapis/api/expr/v1alpha1"
+)
+
+// GetConstValue returns the constant value of the expression.
+func GetConstValue(expr *exprv1.Expr) (any, error) {
+	v, ok := expr.ExprKind.(*exprv1.Expr_ConstExpr)
+	if !ok {
+		return nil, errors.New("invalid constant expression")
+	}
+
+	switch v.ConstExpr.ConstantKind.(type) {
+	case *exprv1.Constant_StringValue:
+		return v.ConstExpr.GetStringValue(), nil
+	case *exprv1.Constant_Int64Value:
+		return v.ConstExpr.GetInt64Value(), nil
+	case *exprv1.Constant_Uint64Value:
+		return v.ConstExpr.GetUint64Value(), nil
+	case *exprv1.Constant_DoubleValue:
+		return v.ConstExpr.GetDoubleValue(), nil
+	case *exprv1.Constant_BoolValue:
+		return v.ConstExpr.GetBoolValue(), nil
+	default:
+		return nil, errors.New("unexpected constant type")
+	}
+}
+
+// GetIdentExprName returns the name of the identifier expression.
+func GetIdentExprName(expr *exprv1.Expr) (string, error) {
+	_, ok := expr.ExprKind.(*exprv1.Expr_IdentExpr)
+	if !ok {
+		return "", errors.New("invalid identifier expression")
+	}
+	return expr.GetIdentExpr().GetName(), nil
+}

plugin/filter/filter.go

@@ -30,26 +30,3 @@ func Parse(filter string, opts ...cel.EnvOption) (expr *exprv1.ParsedExpr, err e
 	}
 	return cel.AstToParsedExpr(ast)
 }
-
-// GetConstValue returns the constant value of the expression.
-func GetConstValue(expr *exprv1.Expr) (any, error) {
-	v, ok := expr.ExprKind.(*exprv1.Expr_ConstExpr)
-	if !ok {
-		return nil, errors.New("invalid constant expression")
-	}
-
-	switch v.ConstExpr.ConstantKind.(type) {
-	case *exprv1.Constant_StringValue:
-		return v.ConstExpr.GetStringValue(), nil
-	case *exprv1.Constant_Int64Value:
-		return v.ConstExpr.GetInt64Value(), nil
-	case *exprv1.Constant_Uint64Value:
-		return v.ConstExpr.GetUint64Value(), nil
-	case *exprv1.Constant_DoubleValue:
-		return v.ConstExpr.GetDoubleValue(), nil
-	case *exprv1.Constant_BoolValue:
-		return v.ConstExpr.GetBoolValue(), nil
-	default:
-		return nil, errors.New("unexpected constant type")
-	}
-}

store/db/mysql/memo.go

@@ -8,6 +8,7 @@ import (
 	"github.com/pkg/errors"
 	"google.golang.org/protobuf/encoding/protojson"
 
+	"github.com/usememos/memos/plugin/filter"
 	storepb "github.com/usememos/memos/proto/gen/store"
 	"github.com/usememos/memos/store"
 )
@@ -108,6 +109,21 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 			where = append(where, "JSON_EXTRACT(`memo`.`payload`, '$.property.hasIncompleteTasks') IS TRUE")
 		}
 	}
+	if v := find.Filter; v != nil {
+		// Parse filter string and return the parsed expression.
+		// The filter string should be a CEL expression.
+		parsedExpr, err := filter.Parse(*v, filter.MemoFilterCELAttributes...)
+		if err != nil {
+			return nil, err
+		}
+		convertCtx := filter.NewConvertContext()
+		// ConvertExprToSQL converts the parsed expression to a SQL condition string.
+		if err := ConvertExprToSQL(convertCtx, parsedExpr.GetExpr()); err != nil {
+			return nil, err
+		}
+		where = append(where, fmt.Sprintf("(%s)", convertCtx.Buffer.String()))
+		args = append(args, convertCtx.Args...)
+	}
 	if find.ExcludeComments {
 		having = append(having, "`parent_id` IS NULL")
 	}

store/db/mysql/memo_filter.go

@@ -0,0 +1,175 @@
+package mysql
+
+import (
+	"fmt"
+	"slices"
+	"strings"
+	"time"
+
+	"github.com/pkg/errors"
+	exprv1 "google.golang.org/genproto/googleapis/api/expr/v1alpha1"
+
+	"github.com/usememos/memos/plugin/filter"
+)
+
+func ConvertExprToSQL(ctx *filter.ConvertContext, expr *exprv1.Expr) error {
+	switch v := expr.ExprKind.(type) {
+	case *exprv1.Expr_CallExpr:
+		switch v.CallExpr.Function {
+		case "_||_", "_&&_":
+			if len(v.CallExpr.Args) != 2 {
+				return errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
+			}
+			if _, err := ctx.Buffer.WriteString("("); err != nil {
+				return err
+			}
+			if err := ConvertExprToSQL(ctx, v.CallExpr.Args[0]); err != nil {
+				return err
+			}
+			operator := "AND"
+			if v.CallExpr.Function == "_||_" {
+				operator = "OR"
+			}
+			if _, err := ctx.Buffer.WriteString(fmt.Sprintf(" %s ", operator)); err != nil {
+				return err
+			}
+			if err := ConvertExprToSQL(ctx, v.CallExpr.Args[1]); err != nil {
+				return err
+			}
+			if _, err := ctx.Buffer.WriteString(")"); err != nil {
+				return err
+			}
+		case "!_":
+			if len(v.CallExpr.Args) != 1 {
+				return errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
+			}
+			if _, err := ctx.Buffer.WriteString("NOT ("); err != nil {
+				return err
+			}
+			if err := ConvertExprToSQL(ctx, v.CallExpr.Args[0]); err != nil {
+				return err
+			}
+			if _, err := ctx.Buffer.WriteString(")"); err != nil {
+				return err
+			}
+		case "_==_", "_!=_", "_<_", "_>_", "_<=_", "_>=_":
+			if len(v.CallExpr.Args) != 2 {
+				return errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
+			}
+			identifier, err := filter.GetIdentExprName(v.CallExpr.Args[0])
+			if err != nil {
+				return err
+			}
+			if !slices.Contains([]string{"create_time", "update_time"}, identifier) {
+				return errors.Errorf("invalid identifier for %s", v.CallExpr.Function)
+			}
+			value, err := filter.GetConstValue(v.CallExpr.Args[1])
+			if err != nil {
+				return err
+			}
+			operator := "="
+			switch v.CallExpr.Function {
+			case "_==_":
+				operator = "="
+			case "_!=_":
+				operator = "!="
+			case "_<_":
+				operator = "<"
+			case "_>_":
+				operator = ">"
+			case "_<=_":
+				operator = "<="
+			case "_>=_":
+				operator = ">="
+			}
+
+			if identifier == "create_time" || identifier == "update_time" {
+				timestampStr, ok := value.(string)
+				if !ok {
+					return errors.New("invalid timestamp value")
+				}
+				timestamp, err := time.Parse(time.RFC3339, timestampStr)
+				if err != nil {
+					return errors.Wrap(err, "failed to parse timestamp")
+				}
+
+				var factor string
+				if identifier == "create_time" {
+					factor = "`memo`.`created_ts`"
+				} else if identifier == "update_time" {
+					factor = "`memo`.`updated_ts`"
+				}
+				if _, err := ctx.Buffer.WriteString(fmt.Sprintf("UNIX_TIMESTAMP(%s) %s ?", factor, operator)); err != nil {
+					return err
+				}
+				ctx.Args = append(ctx.Args, timestamp.Unix())
+			}
+		case "@in":
+			if len(v.CallExpr.Args) != 2 {
+				return errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
+			}
+			identifier, err := filter.GetIdentExprName(v.CallExpr.Args[0])
+			if err != nil {
+				return err
+			}
+			if !slices.Contains([]string{"tag", "visibility"}, identifier) {
+				return errors.Errorf("invalid identifier for %s", v.CallExpr.Function)
+			}
+
+			values := []any{}
+			for _, element := range v.CallExpr.Args[1].GetListExpr().Elements {
+				value, err := filter.GetConstValue(element)
+				if err != nil {
+					return err
+				}
+				values = append(values, value)
+			}
+			if identifier == "tag" {
+				subcodition := []string{}
+				args := []any{}
+				for _, v := range values {
+					subcodition, args = append(subcodition, "JSON_CONTAINS(JSON_EXTRACT(`memo`.`payload`, '$.tags'), ?)"), append(args, v)
+				}
+				if len(subcodition) == 1 {
+					if _, err := ctx.Buffer.WriteString(subcodition[0]); err != nil {
+						return err
+					}
+				} else {
+					if _, err := ctx.Buffer.WriteString(fmt.Sprintf("(%s)", strings.Join(subcodition, " OR "))); err != nil {
+						return err
+					}
+				}
+				ctx.Args = append(ctx.Args, args...)
+			} else if identifier == "visibility" {
+				placeholder := []string{}
+				for range values {
+					placeholder = append(placeholder, "?")
+				}
+				if _, err := ctx.Buffer.WriteString(fmt.Sprintf("`memo`.`visibility` IN (%s)", strings.Join(placeholder, ","))); err != nil {
+					return err
+				}
+				ctx.Args = append(ctx.Args, values...)
+			}
+		case "contains":
+			if len(v.CallExpr.Args) != 1 {
+				return errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
+			}
+			identifier, err := filter.GetIdentExprName(v.CallExpr.Target)
+			if err != nil {
+				return err
+			}
+			if identifier != "content" {
+				return errors.Errorf("invalid identifier for %s", v.CallExpr.Function)
+			}
+			arg, err := filter.GetConstValue(v.CallExpr.Args[0])
+			if err != nil {
+				return err
+			}
+			if _, err := ctx.Buffer.WriteString("`memo`.`content` LIKE ?"); err != nil {
+				return err
+			}
+			ctx.Args = append(ctx.Args, fmt.Sprintf("%%%s%%", arg))
+		}
+	}
+	return nil
+}

store/db/mysql/memo_filter_test.go

@@ -0,0 +1,63 @@
+package mysql
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/usememos/memos/plugin/filter"
+)
+
+func TestConvertExprToSQL(t *testing.T) {
+	tests := []struct {
+		filter string
+		want   string
+		args   []any
+	}{
+		{
+			filter: `tag in ["tag1", "tag2"]`,
+			want:   "(JSON_CONTAINS(JSON_EXTRACT(`memo`.`payload`, '$.tags'), ?) OR JSON_CONTAINS(JSON_EXTRACT(`memo`.`payload`, '$.tags'), ?))",
+			args:   []any{"tag1", "tag2"},
+		},
+		{
+			filter: `!(tag in ["tag1", "tag2"])`,
+			want:   "NOT ((JSON_CONTAINS(JSON_EXTRACT(`memo`.`payload`, '$.tags'), ?) OR JSON_CONTAINS(JSON_EXTRACT(`memo`.`payload`, '$.tags'), ?)))",
+			args:   []any{"tag1", "tag2"},
+		},
+		{
+			filter: `content.contains("memos")`,
+			want:   "`memo`.`content` LIKE ?",
+			args:   []any{"%memos%"},
+		},
+		{
+			filter: `visibility in ["PUBLIC"]`,
+			want:   "`memo`.`visibility` IN (?)",
+			args:   []any{"PUBLIC"},
+		},
+		{
+			filter: `visibility in ["PUBLIC", "PRIVATE"]`,
+			want:   "`memo`.`visibility` IN (?,?)",
+			args:   []any{"PUBLIC", "PRIVATE"},
+		},
+		{
+			filter: `create_time == "2006-01-02T15:04:05+07:00"`,
+			want:   "UNIX_TIMESTAMP(`memo`.`created_ts`) = ?",
+			args:   []any{int64(1136189045)},
+		},
+		{
+			filter: `tag in ['tag1'] || content.contains('hello')`,
+			want:   "(JSON_CONTAINS(JSON_EXTRACT(`memo`.`payload`, '$.tags'), ?) OR `memo`.`content` LIKE ?)",
+			args:   []any{"tag1", "%hello%"},
+		},
+	}
+
+	for _, tt := range tests {
+		parsedExpr, err := filter.Parse(tt.filter, filter.MemoFilterCELAttributes...)
+		require.NoError(t, err)
+		convertCtx := filter.NewConvertContext()
+		err = ConvertExprToSQL(convertCtx, parsedExpr.GetExpr())
+		require.NoError(t, err)
+		require.Equal(t, tt.want, convertCtx.Buffer.String())
+		require.Equal(t, tt.args, convertCtx.Args)
+	}
+}

store/db/postgres/memo.go

@@ -8,6 +8,7 @@ import (
 	"github.com/pkg/errors"
 	"google.golang.org/protobuf/encoding/protojson"
 
+	"github.com/usememos/memos/plugin/filter"
 	storepb "github.com/usememos/memos/proto/gen/store"
 	"github.com/usememos/memos/store"
 )
@@ -99,6 +100,22 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 			where = append(where, "(memo.payload->'property'->>'hasIncompleteTasks')::BOOLEAN IS TRUE")
 		}
 	}
+	if v := find.Filter; v != nil {
+		// Parse filter string and return the parsed expression.
+		// The filter string should be a CEL expression.
+		parsedExpr, err := filter.Parse(*v, filter.MemoFilterCELAttributes...)
+		if err != nil {
+			return nil, err
+		}
+		convertCtx := filter.NewConvertContext()
+		convertCtx.ArgsOffset = len(args)
+		// ConvertExprToSQL converts the parsed expression to a SQL condition string.
+		if err := ConvertExprToSQL(convertCtx, parsedExpr.GetExpr()); err != nil {
+			return nil, err
+		}
+		where = append(where, fmt.Sprintf("(%s)", convertCtx.Buffer.String()))
+		args = append(args, convertCtx.Args...)
+	}
 	if find.ExcludeComments {
 		where = append(where, "memo_relation.related_memo_id IS NULL")
 	}

store/db/postgres/memo_filter.go

@@ -0,0 +1,175 @@
+package postgres
+
+import (
+	"fmt"
+	"slices"
+	"strings"
+	"time"
+
+	"github.com/pkg/errors"
+	exprv1 "google.golang.org/genproto/googleapis/api/expr/v1alpha1"
+
+	"github.com/usememos/memos/plugin/filter"
+)
+
+func ConvertExprToSQL(ctx *filter.ConvertContext, expr *exprv1.Expr) error {
+	switch v := expr.ExprKind.(type) {
+	case *exprv1.Expr_CallExpr:
+		switch v.CallExpr.Function {
+		case "_||_", "_&&_":
+			if len(v.CallExpr.Args) != 2 {
+				return errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
+			}
+			if _, err := ctx.Buffer.WriteString("("); err != nil {
+				return err
+			}
+			if err := ConvertExprToSQL(ctx, v.CallExpr.Args[0]); err != nil {
+				return err
+			}
+			operator := "AND"
+			if v.CallExpr.Function == "_||_" {
+				operator = "OR"
+			}
+			if _, err := ctx.Buffer.WriteString(fmt.Sprintf(" %s ", operator)); err != nil {
+				return err
+			}
+			if err := ConvertExprToSQL(ctx, v.CallExpr.Args[1]); err != nil {
+				return err
+			}
+			if _, err := ctx.Buffer.WriteString(")"); err != nil {
+				return err
+			}
+		case "!_":
+			if len(v.CallExpr.Args) != 1 {
+				return errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
+			}
+			if _, err := ctx.Buffer.WriteString("NOT ("); err != nil {
+				return err
+			}
+			if err := ConvertExprToSQL(ctx, v.CallExpr.Args[0]); err != nil {
+				return err
+			}
+			if _, err := ctx.Buffer.WriteString(")"); err != nil {
+				return err
+			}
+		case "_==_", "_!=_", "_<_", "_>_", "_<=_", "_>=_":
+			if len(v.CallExpr.Args) != 2 {
+				return errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
+			}
+			identifier, err := filter.GetIdentExprName(v.CallExpr.Args[0])
+			if err != nil {
+				return err
+			}
+			if !slices.Contains([]string{"create_time", "update_time"}, identifier) {
+				return errors.Errorf("invalid identifier for %s", v.CallExpr.Function)
+			}
+			value, err := filter.GetConstValue(v.CallExpr.Args[1])
+			if err != nil {
+				return err
+			}
+			operator := "="
+			switch v.CallExpr.Function {
+			case "_==_":
+				operator = "="
+			case "_!=_":
+				operator = "!="
+			case "_<_":
+				operator = "<"
+			case "_>_":
+				operator = ">"
+			case "_<=_":
+				operator = "<="
+			case "_>=_":
+				operator = ">="
+			}
+
+			if identifier == "create_time" || identifier == "update_time" {
+				timestampStr, ok := value.(string)
+				if !ok {
+					return errors.New("invalid timestamp value")
+				}
+				timestamp, err := time.Parse(time.RFC3339, timestampStr)
+				if err != nil {
+					return errors.Wrap(err, "failed to parse timestamp")
+				}
+
+				var factor string
+				if identifier == "create_time" {
+					factor = "memo.created_ts"
+				} else if identifier == "update_time" {
+					factor = "memo.updated_ts"
+				}
+				if _, err := ctx.Buffer.WriteString(fmt.Sprintf("%s %s %s", factor, operator, placeholder(len(ctx.Args)+ctx.ArgsOffset+1))); err != nil {
+					return err
+				}
+				ctx.Args = append(ctx.Args, timestamp.Unix())
+			}
+		case "@in":
+			if len(v.CallExpr.Args) != 2 {
+				return errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
+			}
+			identifier, err := filter.GetIdentExprName(v.CallExpr.Args[0])
+			if err != nil {
+				return err
+			}
+			if !slices.Contains([]string{"tag", "visibility"}, identifier) {
+				return errors.Errorf("invalid identifier for %s", v.CallExpr.Function)
+			}
+
+			values := []any{}
+			for _, element := range v.CallExpr.Args[1].GetListExpr().Elements {
+				value, err := filter.GetConstValue(element)
+				if err != nil {
+					return err
+				}
+				values = append(values, value)
+			}
+			if identifier == "tag" {
+				subcodition := []string{}
+				args := []any{}
+				for _, v := range values {
+					subcodition, args = append(subcodition, fmt.Sprintf(`memo.payload->'tags' @> %s::jsonb`, placeholder(len(ctx.Args)+ctx.ArgsOffset+len(args)+1))), append(args, []any{v})
+				}
+				if len(subcodition) == 1 {
+					if _, err := ctx.Buffer.WriteString(subcodition[0]); err != nil {
+						return err
+					}
+				} else {
+					if _, err := ctx.Buffer.WriteString(fmt.Sprintf("(%s)", strings.Join(subcodition, " OR "))); err != nil {
+						return err
+					}
+				}
+				ctx.Args = append(ctx.Args, args...)
+			} else if identifier == "visibility" {
+				placeholders := []string{}
+				for i := range values {
+					placeholders = append(placeholders, placeholder(len(ctx.Args)+ctx.ArgsOffset+i+1))
+				}
+				if _, err := ctx.Buffer.WriteString(fmt.Sprintf("memo.visibility IN (%s)", strings.Join(placeholders, ","))); err != nil {
+					return err
+				}
+				ctx.Args = append(ctx.Args, values...)
+			}
+		case "contains":
+			if len(v.CallExpr.Args) != 1 {
+				return errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
+			}
+			identifier, err := filter.GetIdentExprName(v.CallExpr.Target)
+			if err != nil {
+				return err
+			}
+			if identifier != "content" {
+				return errors.Errorf("invalid identifier for %s", v.CallExpr.Function)
+			}
+			arg, err := filter.GetConstValue(v.CallExpr.Args[0])
+			if err != nil {
+				return err
+			}
+			if _, err := ctx.Buffer.WriteString("memo.content ILIKE LIKE " + placeholder(len(ctx.Args)+ctx.ArgsOffset+1)); err != nil {
+				return err
+			}
+			ctx.Args = append(ctx.Args, fmt.Sprintf("%%%s%%", arg))
+		}
+	}
+	return nil
+}

store/db/postgres/memo_filter_test.go

@@ -0,0 +1,63 @@
+package postgres
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/usememos/memos/plugin/filter"
+)
+
+func TestRestoreExprToSQL(t *testing.T) {
+	tests := []struct {
+		filter string
+		want   string
+		args   []any
+	}{
+		{
+			filter: `tag in ["tag1", "tag2"]`,
+			want:   "(memo.payload->'tags' @> $1::jsonb OR memo.payload->'tags' @> $2::jsonb)",
+			args:   []any{[]any{"tag1"}, []any{"tag2"}},
+		},
+		{
+			filter: `!(tag in ["tag1", "tag2"])`,
+			want:   `NOT ((memo.payload->'tags' @> $1::jsonb OR memo.payload->'tags' @> $2::jsonb))`,
+			args:   []any{[]any{"tag1"}, []any{"tag2"}},
+		},
+		{
+			filter: `content.contains("memos")`,
+			want:   "memo.content ILIKE LIKE $1",
+			args:   []any{"%memos%"},
+		},
+		{
+			filter: `visibility in ["PUBLIC"]`,
+			want:   "memo.visibility IN ($1)",
+			args:   []any{"PUBLIC"},
+		},
+		{
+			filter: `visibility in ["PUBLIC", "PRIVATE"]`,
+			want:   "memo.visibility IN ($1,$2)",
+			args:   []any{"PUBLIC", "PRIVATE"},
+		},
+		{
+			filter: `create_time == "2006-01-02T15:04:05+07:00"`,
+			want:   "memo.created_ts = $1",
+			args:   []any{int64(1136189045)},
+		},
+		{
+			filter: `tag in ['tag1'] || content.contains('hello')`,
+			want:   "(memo.payload->'tags' @> $1::jsonb OR memo.content ILIKE LIKE $2)",
+			args:   []any{[]any{"tag1"}, "%hello%"},
+		},
+	}
+
+	for _, tt := range tests {
+		parsedExpr, err := filter.Parse(tt.filter, filter.MemoFilterCELAttributes...)
+		require.NoError(t, err)
+		convertCtx := filter.NewConvertContext()
+		err = ConvertExprToSQL(convertCtx, parsedExpr.GetExpr())
+		require.NoError(t, err)
+		require.Equal(t, tt.want, convertCtx.Buffer.String())
+		require.Equal(t, tt.args, convertCtx.Args)
+	}
+}

store/db/sqlite/memo.go

@@ -108,12 +108,13 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 		if err != nil {
 			return nil, err
 		}
-		// RestoreExprToSQL parses the expression and returns the SQL condition.
+		convertCtx := filter.NewConvertContext()
-		condition, err := RestoreExprToSQL(parsedExpr.GetExpr())
+		// ConvertExprToSQL converts the parsed expression to a SQL condition string.
-		if err != nil {
+		if err := ConvertExprToSQL(convertCtx, parsedExpr.GetExpr()); err != nil {
 			return nil, err
 		}
-		where = append(where, fmt.Sprintf("(%s)", condition))
+		where = append(where, fmt.Sprintf("(%s)", convertCtx.Buffer.String()))
+		args = append(args, convertCtx.Args...)
 	}
 	if find.ExcludeComments {
 		where = append(where, "`parent_id` IS NULL")

store/db/sqlite/memo_filter.go

@@ -12,39 +12,60 @@ import (
 	"github.com/usememos/memos/plugin/filter"
 )
 
-func RestoreExprToSQL(expr *exprv1.Expr) (string, error) {
+func ConvertExprToSQL(ctx *filter.ConvertContext, expr *exprv1.Expr) error {
-	var condition string
 	switch v := expr.ExprKind.(type) {
 	case *exprv1.Expr_CallExpr:
 		switch v.CallExpr.Function {
 		case "_||_", "_&&_":
 			if len(v.CallExpr.Args) != 2 {
-				return "", errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
+				return errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
 			}
-			left, err := RestoreExprToSQL(v.CallExpr.Args[0])
+			if _, err := ctx.Buffer.WriteString("("); err != nil {
-			if err != nil {
+				return err
-				return "", err
 			}
-			right, err := RestoreExprToSQL(v.CallExpr.Args[1])
+			if err := ConvertExprToSQL(ctx, v.CallExpr.Args[0]); err != nil {
-			if err != nil {
+				return err
-				return "", err
 			}
 			operator := "AND"
 			if v.CallExpr.Function == "_||_" {
 				operator = "OR"
 			}
-			condition = fmt.Sprintf("(%s %s %s)", left, operator, right)
+			if _, err := ctx.Buffer.WriteString(fmt.Sprintf(" %s ", operator)); err != nil {
+				return err
+			}
+			if err := ConvertExprToSQL(ctx, v.CallExpr.Args[1]); err != nil {
+				return err
+			}
+			if _, err := ctx.Buffer.WriteString(")"); err != nil {
+				return err
+			}
+		case "!_":
+			if len(v.CallExpr.Args) != 1 {
+				return errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
+			}
+			if _, err := ctx.Buffer.WriteString("NOT ("); err != nil {
+				return err
+			}
+			if err := ConvertExprToSQL(ctx, v.CallExpr.Args[0]); err != nil {
+				return err
+			}
+			if _, err := ctx.Buffer.WriteString(")"); err != nil {
+				return err
+			}
 		case "_==_", "_!=_", "_<_", "_>_", "_<=_", "_>=_":
 			if len(v.CallExpr.Args) != 2 {
-				return "", errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
+				return errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
+			}
+			identifier, err := filter.GetIdentExprName(v.CallExpr.Args[0])
+			if err != nil {
+				return err
 			}
-			identifier := v.CallExpr.Args[0].GetIdentExpr().GetName()
 			if !slices.Contains([]string{"create_time", "update_time"}, identifier) {
-				return "", errors.Errorf("invalid identifier for %s", v.CallExpr.Function)
+				return errors.Errorf("invalid identifier for %s", v.CallExpr.Function)
 			}
 			value, err := filter.GetConstValue(v.CallExpr.Args[1])
 			if err != nil {
-				return "", err
+				return err
 			}
 			operator := "="
 			switch v.CallExpr.Function {
@@ -65,85 +86,90 @@ func RestoreExprToSQL(expr *exprv1.Expr) (string, error) {
 			if identifier == "create_time" || identifier == "update_time" {
 				timestampStr, ok := value.(string)
 				if !ok {
-					return "", errors.New("invalid timestamp value")
+					return errors.New("invalid timestamp value")
 				}
 				timestamp, err := time.Parse(time.RFC3339, timestampStr)
 				if err != nil {
-					return "", errors.Wrap(err, "failed to parse timestamp")
+					return errors.Wrap(err, "failed to parse timestamp")
 				}
 
+				var factor string
 				if identifier == "create_time" {
-					condition = fmt.Sprintf("`memo`.`created_ts` %s %d", operator, timestamp.Unix())
+					factor = "`memo`.`created_ts`"
 				} else if identifier == "update_time" {
-					condition = fmt.Sprintf("`memo`.`updated_ts` %s %d", operator, timestamp.Unix())
+					factor = "`memo`.`updated_ts`"
+				}
+				if _, err := ctx.Buffer.WriteString(fmt.Sprintf("%s %s ?", factor, operator)); err != nil {
+					return err
 				}
+				ctx.Args = append(ctx.Args, timestamp.Unix())
 			}
 		case "@in":
 			if len(v.CallExpr.Args) != 2 {
-				return "", errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
+				return errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
+			}
+			identifier, err := filter.GetIdentExprName(v.CallExpr.Args[0])
+			if err != nil {
+				return err
 			}
-			identifier := v.CallExpr.Args[0].GetIdentExpr().GetName()
 			if !slices.Contains([]string{"tag", "visibility"}, identifier) {
-				return "", errors.Errorf("invalid identifier for %s", v.CallExpr.Function)
+				return errors.Errorf("invalid identifier for %s", v.CallExpr.Function)
 			}
 
 			values := []any{}
 			for _, element := range v.CallExpr.Args[1].GetListExpr().Elements {
 				value, err := filter.GetConstValue(element)
 				if err != nil {
-					return "", err
+					return err
 				}
 				values = append(values, value)
 			}
 			if identifier == "tag" {
 				subcodition := []string{}
+				args := []any{}
 				for _, v := range values {
-					subcodition = append(subcodition, fmt.Sprintf("JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE %s", fmt.Sprintf(`'%%"%s"%%'`, v)))
+					subcodition, args = append(subcodition, "JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE ?"), append(args, fmt.Sprintf(`%%"%s"%%`, v))
 				}
 				if len(subcodition) == 1 {
-					condition = subcodition[0]
+					if _, err := ctx.Buffer.WriteString(subcodition[0]); err != nil {
+						return err
+					}
 				} else {
-					condition = fmt.Sprintf("(%s)", strings.Join(subcodition, " OR "))
+					if _, err := ctx.Buffer.WriteString(fmt.Sprintf("(%s)", strings.Join(subcodition, " OR "))); err != nil {
+						return err
+					}
 				}
+				ctx.Args = append(ctx.Args, args...)
 			} else if identifier == "visibility" {
-				vs := []string{}
+				placeholder := []string{}
-				for _, v := range values {
+				for range values {
-					vs = append(vs, fmt.Sprintf(`"%s"`, v))
+					placeholder = append(placeholder, "?")
 				}
-				if len(vs) == 1 {
+				if _, err := ctx.Buffer.WriteString(fmt.Sprintf("`memo`.`visibility` IN (%s)", strings.Join(placeholder, ","))); err != nil {
-					condition = fmt.Sprintf("`memo`.`visibility` = %s", vs[0])
+					return err
-				} else {
-					condition = fmt.Sprintf("`memo`.`visibility` IN (%s)", strings.Join(vs, ","))
 				}
+				ctx.Args = append(ctx.Args, values...)
 			}
 		case "contains":
 			if len(v.CallExpr.Args) != 1 {
-				return "", errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
+				return errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
 			}
-			identifier, err := RestoreExprToSQL(v.CallExpr.Target)
+			identifier, err := filter.GetIdentExprName(v.CallExpr.Target)
 			if err != nil {
-				return "", err
+				return err
 			}
 			if identifier != "content" {
-				return "", errors.Errorf("invalid identifier for %s", v.CallExpr.Function)
+				return errors.Errorf("invalid identifier for %s", v.CallExpr.Function)
 			}
 			arg, err := filter.GetConstValue(v.CallExpr.Args[0])
 			if err != nil {
-				return "", err
+				return err
 			}
-			condition = fmt.Sprintf("`memo`.`content` LIKE %s", fmt.Sprintf(`'%%%s%%'`, arg))
+			if _, err := ctx.Buffer.WriteString("`memo`.`content` LIKE ?"); err != nil {
-		case "!_":
+				return err
-			if len(v.CallExpr.Args) != 1 {
-				return "", errors.Errorf("invalid number of arguments for %s", v.CallExpr.Function)
-			}
-			arg, err := RestoreExprToSQL(v.CallExpr.Args[0])
-			if err != nil {
-				return "", err
 			}
-			condition = fmt.Sprintf("NOT (%s)", arg)
+			ctx.Args = append(ctx.Args, fmt.Sprintf("%%%s%%", arg))
 		}
-	case *exprv1.Expr_IdentExpr:
-		return v.IdentExpr.GetName(), nil
 	}
-	return condition, nil
+	return nil
 }

store/db/sqlite/memo_filter_test.go

@@ -8,50 +8,61 @@ import (
 	"github.com/usememos/memos/plugin/filter"
 )
 
-func TestRestoreExprToSQL(t *testing.T) {
+func TestConvertExprToSQL(t *testing.T) {
 	tests := []struct {
 		filter string
 		want   string
+		args   []any
 	}{
 		{
 			filter: `tag in ["tag1", "tag2"]`,
-			want:   "(JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE '%\"tag1\"%' OR JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE '%\"tag2\"%')",
+			want:   "(JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE ? OR JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE ?)",
+			args:   []any{`%"tag1"%`, `%"tag2"%`},
 		},
 		{
 			filter: `!(tag in ["tag1", "tag2"])`,
-			want:   "NOT ((JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE '%\"tag1\"%' OR JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE '%\"tag2\"%'))",
+			want:   "NOT ((JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE ? OR JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE ?))",
+			args:   []any{`%"tag1"%`, `%"tag2"%`},
 		},
 		{
 			filter: `tag in ["tag1", "tag2"] || tag in ["tag3", "tag4"]`,
-			want:   "((JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE '%\"tag1\"%' OR JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE '%\"tag2\"%') OR (JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE '%\"tag3\"%' OR JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE '%\"tag4\"%'))",
+			want:   "((JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE ? OR JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE ?) OR (JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE ? OR JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE ?))",
+			args:   []any{`%"tag1"%`, `%"tag2"%`, `%"tag3"%`, `%"tag4"%`},
 		},
 		{
 			filter: `content.contains("memos")`,
-			want:   "`memo`.`content` LIKE '%memos%'",
+			want:   "`memo`.`content` LIKE ?",
+			args:   []any{"%memos%"},
 		},
 		{
 			filter: `visibility in ["PUBLIC"]`,
-			want:   "`memo`.`visibility` = \"PUBLIC\"",
+			want:   "`memo`.`visibility` IN (?)",
+			args:   []any{"PUBLIC"},
 		},
 		{
 			filter: `visibility in ["PUBLIC", "PRIVATE"]`,
-			want:   "`memo`.`visibility` IN (\"PUBLIC\",\"PRIVATE\")",
+			want:   "`memo`.`visibility` IN (?,?)",
+			args:   []any{"PUBLIC", "PRIVATE"},
 		},
 		{
 			filter: `create_time == "2006-01-02T15:04:05+07:00"`,
-			want:   "`memo`.`created_ts` = 1136189045",
+			want:   "`memo`.`created_ts` = ?",
+			args:   []any{int64(1136189045)},
 		},
 		{
 			filter: `tag in ['tag1'] || content.contains('hello')`,
-			want:   "(JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE '%\"tag1\"%' OR `memo`.`content` LIKE '%hello%')",
+			want:   "(JSON_EXTRACT(`memo`.`payload`, '$.tags') LIKE ? OR `memo`.`content` LIKE ?)",
+			args:   []any{`%"tag1"%`, "%hello%"},
 		},
 	}
 
 	for _, tt := range tests {
 		parsedExpr, err := filter.Parse(tt.filter, filter.MemoFilterCELAttributes...)
 		require.NoError(t, err)
-		result, err := RestoreExprToSQL(parsedExpr.GetExpr())
+		convertCtx := filter.NewConvertContext()
+		err = ConvertExprToSQL(convertCtx, parsedExpr.GetExpr())
 		require.NoError(t, err)
-		require.Equal(t, tt.want, result)
+		require.Equal(t, tt.want, convertCtx.Buffer.String())
+		require.Equal(t, tt.args, convertCtx.Args)
 	}
 }