mirror of
https://github.com/infiniflow/ragflow.git
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59 lines
1.9 KiB
Go
59 lines
1.9 KiB
Go
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//
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// Copyright 2026 The InfiniFlow Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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package serenedb
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import (
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"context"
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"fmt"
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"regexp"
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"strings"
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)
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const runSQLDefaultLimit = 1024
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var (
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selectPrefixRe = regexp.MustCompile(`(?i)^(select|with)\b`)
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hasLimitRe = regexp.MustCompile(`(?i)\blimit\b`)
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)
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// boundRunSQL trims a statement and appends a default LIMIT to unbounded
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// SELECT/WITH queries so the text-to-SQL path cannot stream an entire table.
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// Pure for tests.
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func boundRunSQL(sqlText string, limit int) string {
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txt := strings.TrimSpace(sqlText)
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txt = strings.TrimRight(txt, ";")
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if limit > 0 && selectPrefixRe.MatchString(txt) && !hasLimitRe.MatchString(txt) {
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txt = fmt.Sprintf("%s LIMIT %d", txt, limit)
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}
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return txt
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}
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// RunSQL executes a text-to-SQL query directly against SereneDB and returns the
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// rows as maps. SereneDB speaks SQL natively, so unlike the Infinity engine no
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// psql subprocess or field-alias rewrite is needed.
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func (e *serenedbEngine) RunSQL(ctx context.Context, tableName string, sqlText string, kbIDs []string, format string) ([]map[string]interface{}, error) {
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query := boundRunSQL(sqlText, runSQLDefaultLimit)
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rows, err := e.queryMaps(ctx, query)
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if err != nil {
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return nil, fmt.Errorf("serenedb: run sql: %w", err)
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}
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if rows == nil {
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rows = []map[string]interface{}{}
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}
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return rows, nil
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}
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