rawsql-ts/dist/transformers/SimulatedSelectConverter.js

High-performance SQL parser and AST analyzer written in TypeScript. Provides fast parsing and advanced transformation capabilities.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.SimulatedSelectConverter = void 0;
const InsertQuery_1 = require("../models/InsertQuery");
const UpdateQuery_1 = require("../models/UpdateQuery");
const DeleteQuery_1 = require("../models/DeleteQuery");
const MergeQuery_1 = require("../models/MergeQuery");
const CreateTableQuery_1 = require("../models/CreateTableQuery");
const SimpleSelectQuery_1 = require("../models/SimpleSelectQuery");
const BinarySelectQuery_1 = require("../models/BinarySelectQuery");
const ValuesQuery_1 = require("../models/ValuesQuery");
const InsertResultSelectConverter_1 = require("./InsertResultSelectConverter");
const UpdateResultSelectConverter_1 = require("./UpdateResultSelectConverter");
const DeleteResultSelectConverter_1 = require("./DeleteResultSelectConverter");
const MergeResultSelectConverter_1 = require("./MergeResultSelectConverter");
const SelectResultSelectConverter_1 = require("./SelectResultSelectConverter");
class SimulatedSelectConverter {
    /**
     * Converts a SQL statement into a simulated SELECT statement for previewing results.
     *
     * Rules:
     * 1. INSERT/UPDATE/DELETE/MERGE: Converted to SELECT statement showing affected rows.
     * 2. SELECT: Preserved as is (with fixtures injected).
     * 3. CREATE TEMPORARY TABLE ... AS SELECT: Preserved as is (with fixtures injected into inner SELECT).
     * 4. Other DDL (CREATE TABLE, DROP, ALTER, etc.): Ignored (returns null).
     *
     * @param ast The SQL component to convert
     * @param options Options for conversion (fixtures, table definitions, etc.)
     * @returns The converted SqlComponent or null if the statement should be ignored.
     */
    static convert(ast, options) {
        if (ast instanceof InsertQuery_1.InsertQuery) {
            return InsertResultSelectConverter_1.InsertResultSelectConverter.toSelectQuery(ast, options);
        }
        if (ast instanceof UpdateQuery_1.UpdateQuery) {
            return UpdateResultSelectConverter_1.UpdateResultSelectConverter.toSelectQuery(ast, options);
        }
        if (ast instanceof DeleteQuery_1.DeleteQuery) {
            return DeleteResultSelectConverter_1.DeleteResultSelectConverter.toSelectQuery(ast, options);
        }
        if (ast instanceof MergeQuery_1.MergeQuery) {
            return MergeResultSelectConverter_1.MergeResultSelectConverter.toSelectQuery(ast, options);
        }
        if (ast instanceof SimpleSelectQuery_1.SimpleSelectQuery || ast instanceof BinarySelectQuery_1.BinarySelectQuery || ast instanceof ValuesQuery_1.ValuesQuery) {
            // Use SelectResultSelectConverter to inject fixtures
            return SelectResultSelectConverter_1.SelectResultSelectConverter.toSelectQuery(ast, options);
        }
        if (ast instanceof CreateTableQuery_1.CreateTableQuery) {
            // Allow CreateTemporaryTableAsSelect
            if (ast.isTemporary && ast.asSelectQuery) {
                // Inject fixtures into the inner select query
                // Note: We modify the AST in place as SelectResultSelectConverter does
                const processedSelect = SelectResultSelectConverter_1.SelectResultSelectConverter.toSelectQuery(ast.asSelectQuery, options);
                ast.asSelectQuery = processedSelect;
                return ast;
            }
            // Ignore other Create Table statements
            return null;
        }
        // Ignore all other statements (DDL, etc.)
        return null;
    }
}
exports.SimulatedSelectConverter = SimulatedSelectConverter;
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