node-oracledb/examples/em_dmlreturn2.js

132 lines
4.0 KiB
JavaScript

/* Copyright (c) 2018, 2023, Oracle and/or its affiliates. */
/******************************************************************************
*
* This software is dual-licensed to you under the Universal Permissive License
* (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl and Apache License
* 2.0 as shown at http://www.apache.org/licenses/LICENSE-2.0. You may choose
* either license.
*
* If you elect to accept the software under the Apache License, Version 2.0,
* the following applies:
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* NAME
* em_dmlreturn2.js
*
* DESCRIPTION
* executeMany() example of DML RETURNING that returns multiple values
*
*****************************************************************************/
'use strict';
Error.stackTraceLimit = 50;
const oracledb = require('oracledb');
const dbConfig = require('./dbconfig.js');
const demoSetup = require('./demosetup.js');
// This example runs in both node-oracledb Thin and Thick modes.
//
// Optionally run in node-oracledb Thick mode
if (process.env.NODE_ORACLEDB_DRIVER_MODE === 'thick') {
// Thick mode requires Oracle Client or Oracle Instant Client libraries.
// On Windows and macOS Intel you can specify the directory containing the
// libraries at runtime or before Node.js starts. On other platforms (where
// Oracle libraries are available) the system library search path must always
// include the Oracle library path before Node.js starts. If the search path
// is not correct, you will get a DPI-1047 error. See the node-oracledb
// installation documentation.
let clientOpts = {};
// On Windows and macOS Intel platforms, set the environment
// variable NODE_ORACLEDB_CLIENT_LIB_DIR to the Oracle Client library path
if (process.platform === 'win32' || (process.platform === 'darwin' && process.arch === 'x64')) {
clientOpts = { libDir: process.env.NODE_ORACLEDB_CLIENT_LIB_DIR };
}
oracledb.initOracleClient(clientOpts); // enable node-oracledb Thick mode
}
console.log(oracledb.thin ? 'Running in thin mode' : 'Running in thick mode');
const insertSql = "INSERT INTO no_em_tab VALUES (:1, :2)";
const insertData = [
[1, "Test 1 (One)"],
[2, "Test 2 (Two)"],
[3, "Test 3 (Three)"],
[4, "Test 4 (Four)"],
[5, "Test 5 (Five)"],
[6, "Test 6 (Six)"],
[7, "Test 7 (Seven)"],
[8, "Test 8 (Eight)"]
];
const insertOptions = {
bindDefs: [
{ type: oracledb.NUMBER },
{ type: oracledb.STRING, maxSize: 20 }
]
};
const deleteSql = "DELETE FROM no_em_tab WHERE id < :1 RETURNING id, val INTO :2, :3";
const deleteData = [
[2],
[6],
[8]
];
const deleteOptions = {
bindDefs: [
{ type: oracledb.NUMBER },
{ type: oracledb.NUMBER, dir: oracledb.BIND_OUT },
{ type: oracledb.STRING, maxSize: 25, dir: oracledb.BIND_OUT }
]
};
async function run() {
let connection;
try {
connection = await oracledb.getConnection(dbConfig);
await demoSetup.setupEm(connection); // create the demo table
await connection.executeMany(insertSql, insertData, insertOptions);
const result = await connection.executeMany(deleteSql, deleteData, deleteOptions);
console.log("rowsAffected is:", result.rowsAffected);
console.log("Out binds:");
for (let i = 0; i < result.outBinds.length; i++) {
console.log("-->", result.outBinds[i]);
}
} catch (err) {
console.error(err);
} finally {
if (connection) {
try {
await connection.close();
} catch (err) {
console.error(err);
}
}
}
}
run();