98 lines
3.0 KiB
JavaScript
98 lines
3.0 KiB
JavaScript
/* Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved. */
|
|
|
|
/******************************************************************************
|
|
*
|
|
* You may not use the identified files except in compliance with the Apache
|
|
* License, Version 2.0 (the "License.")
|
|
*
|
|
* You may obtain a copy of the License at
|
|
* http://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
|
|
* insert2.js
|
|
*
|
|
* DESCRIPTION
|
|
* Show the auto commit behavior.
|
|
*
|
|
* By default, node-oracledb does not commit on execute.
|
|
* The driver also has commit() and rollback() methods to explicitly control transactions.
|
|
*
|
|
* Note: regardless of the auto commit mode, any open transaction
|
|
* will be rolled back when a connection is closed.
|
|
*
|
|
* This example uses Node 8's async/await syntax.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
const oracledb = require('oracledb');
|
|
const dbConfig = require('./dbconfig.js');
|
|
|
|
async function run() {
|
|
|
|
let connection1, connection2;
|
|
|
|
try {
|
|
connection1 = await oracledb.getConnection(dbConfig);
|
|
connection2 = await oracledb.getConnection(dbConfig);
|
|
|
|
let result;
|
|
|
|
await connection1.execute(
|
|
`BEGIN
|
|
EXECUTE IMMEDIATE 'DROP TABLE test';
|
|
EXCEPTION WHEN OTHERS THEN
|
|
IF SQLCODE <> -942 THEN
|
|
RAISE;
|
|
END IF;
|
|
END;`);
|
|
console.log("Table dropped");
|
|
|
|
await connection1.execute(
|
|
`CREATE TABLE test (id NUMBER, name VARCHAR2(20))`);
|
|
console.log("Table created");
|
|
|
|
// Insert with autoCommit enabled
|
|
result = await connection1.execute(
|
|
`INSERT INTO test VALUES (:id, :nm)`,
|
|
[1, 'Chris'], // Bind values
|
|
{ autoCommit: true}); // Override the default, non-autocommit behavior
|
|
console.log("Rows inserted: " + result.rowsAffected); // 1
|
|
|
|
// Insert without committing
|
|
result = await connection1.execute(
|
|
`INSERT INTO test VALUES (:id, :nm)`,
|
|
[2, 'Alison'], // Bind values
|
|
// { autoCommit: true}, // Since this isn't set, operations using a second connection won't see this row
|
|
);
|
|
console.log("Rows inserted: " + result.rowsAffected); // 1
|
|
|
|
// A query on the second connection will only show 'Chris' because
|
|
// inserting 'Alison' is not commited by default. Uncomment the
|
|
// autoCommit option above and you will see both rows
|
|
result = await connection2.execute(
|
|
`SELECT * FROM test`);
|
|
console.log(result.rows);
|
|
|
|
} catch (err) {
|
|
console.error(err);
|
|
} finally {
|
|
try {
|
|
if (connection1)
|
|
await connection1.close();
|
|
if (connection2)
|
|
await connection2.close();
|
|
} catch (err) {
|
|
console.error(err);
|
|
}
|
|
}
|
|
}
|
|
|
|
run();
|