81 lines
2.9 KiB
Go
81 lines
2.9 KiB
Go
/*
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* Copyright 2025 coze-dev Authors
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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 sqlparser
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// TableColumn represents table and column name mapping
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type TableColumn struct {
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NewTableName *string // if nil, not replace table name
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ColumnMap map[string]string // Column name mapping: key is original column name, value is new column name
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}
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type ColumnValue struct {
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ColName string
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Value interface{}
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}
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type PrimaryKeyValue struct {
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ColName string
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Values []interface{}
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}
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// OperationType represents the type of SQL operation
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type OperationType string
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// SQL operation types
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const (
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OperationTypeSelect OperationType = "SELECT"
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OperationTypeInsert OperationType = "INSERT"
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OperationTypeUpdate OperationType = "UPDATE"
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OperationTypeDelete OperationType = "DELETE"
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OperationTypeCreate OperationType = "CREATE"
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OperationTypeAlter OperationType = "ALTER"
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OperationTypeDrop OperationType = "DROP"
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OperationTypeTruncate OperationType = "TRUNCATE"
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OperationTypeUnknown OperationType = "UNKNOWN"
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)
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type SQLFilterOp string
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const (
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SQLFilterOpAnd SQLFilterOp = "AND"
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SQLFilterOpOr SQLFilterOp = "OR"
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)
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// SQLParser defines the interface for parsing and modifying SQL statements
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type SQLParser interface {
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// ParseAndModifySQL parses SQL and replaces table/column names according to the provided message
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ParseAndModifySQL(sql string, tableColumns map[string]TableColumn) (string, error) // tableColumns Original table name -> new TableInfo
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// GetSQLOperation identifies the operation type in the SQL statement
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GetSQLOperation(sql string) (OperationType, error)
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// AddColumnsToInsertSQL adds columns to the INSERT SQL statement.
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AddColumnsToInsertSQL(origSQL string, addCols []ColumnValue, colVals *PrimaryKeyValue, isParam bool) (string, map[string]bool, error)
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// GetTableName extracts the table name from a SQL statement. Only supports single-table select/insert/update/delete. If it has multiple tables, return first table name.
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GetTableName(sql string) (string, error)
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// GetInsertDataNums extracts the number of rows to be inserted from a SQL statement. Only supports single-table insert.
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GetInsertDataNums(sql string) (int, error)
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// AppendSQLFilter appends a filter condition to the SQL statement.
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AppendSQLFilter(sql string, op SQLFilterOp, filter string) (string, error)
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// AddSelectFieldsToSelectSQL add select fields to select sql
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AddSelectFieldsToSelectSQL(origSQL string, cols []string) (string, error)
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}
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