sql-ddl-to-json-schema/lib/mysql/formatter/compact/models/rules/drop-table.js

Parse and convert SQL DDL statements to a JSON Schema.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.DropTable = void 0;
/**
 * Formatter for P_DROP_TABLE rule's parsed JSON.
 */
class DropTable {
    database;
    /**
     * Get table with given name.
     *
     * @param name Table name.
     */
    getTable(name) {
        return this.database.getTable(name);
    }
    /**
     * Setter for database.
     *
     * @param database Database instance.
     */
    setDatabase(database) {
        this.database = database;
    }
    /**
     * Drops one of the tables.
     *
     * @param json JSON format parsed from SQL.
     */
    handleDef(json) {
        if (json.id === 'P_DROP_TABLE') {
            json.def.forEach((tableName) => {
                const table = this.getTable(tableName);
                if (!table) {
                    return;
                }
                let tables = this.database.getTables();
                const hasReference = tables.some((t) => t.foreignKeys?.some((k) => k.referencesTable(table)));
                if (hasReference) {
                    return;
                }
                if (!table) {
                    // throw new Error(`Found "DROP TABLE" statement for an unexisting table ${table}`);
                    return;
                }
                const end = tables.splice(tables.indexOf(table));
                end.shift();
                tables = tables.concat(end);
                this.database.setTables(tables);
            });
            return;
        }
        throw new TypeError(`Expected P_DROP_TABLE rule to be handled but received ${json.id}`);
    }
}
exports.DropTable = DropTable;