117 lines
2.8 KiB
JavaScript
117 lines
2.8 KiB
JavaScript
/* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. */
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/******************************************************************************
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*
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* You may not use the identified files except in compliance with the Apache
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* License, Version 2.0 (the "License.")
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*
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* You may obtain a copy of the License at
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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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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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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* NAME
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* em_dmlreturn2.js
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*
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* DESCRIPTION
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* executeMany() example of DML RETURNING that returns multiple values
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* Use demo.sql to create the required schema.
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*
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*****************************************************************************/
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var async = require('async');
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var oracledb = require('oracledb');
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var dbConfig = require('./dbconfig.js');
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var doconnect = function(cb) {
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oracledb.getConnection(dbConfig, cb);
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};
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var dorelease = function(conn) {
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conn.close(function (err) {
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if (err)
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console.error(err.message);
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});
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};
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var dotruncate = function(conn, cb) {
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conn.execute("TRUNCATE TABLE em_tab", function (err) {
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return cb(err, conn);
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});
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};
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var doinsert = function(conn, cb) {
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var sql = "INSERT INTO em_tab VALUES (:1, :2)";
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var binds = [
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[1, "Test 1 (One)"],
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[2, "Test 2 (Two)"],
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[3, "Test 3 (Three)"],
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[4, "Test 4 (Four)"],
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[5, "Test 5 (Five)"],
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[6, "Test 6 (Six)"],
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[7, "Test 7 (Seven)"],
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[8, "Test 8 (Eight)"]
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];
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var options = {
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bindDefs: [
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{ type: oracledb.NUMBER },
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{ type: oracledb.STRING, maxSize: 20 }
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]
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};
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conn.executeMany(sql, binds, options, function (err) {
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return cb(err, conn);
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});
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};
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var dodelete = function(conn, cb) {
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var sql = "DELETE FROM em_tab WHERE id < :1 RETURNING id, val INTO :2, :3";
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var binds = [
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[2],
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[6],
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[8]
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];
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var options = {
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bindDefs: [
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{ type: oracledb.NUMBER },
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{ type: oracledb.NUMBER, dir: oracledb.BIND_OUT },
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{ type: oracledb.STRING, maxSize: 25, dir: oracledb.BIND_OUT }
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]
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};
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conn.executeMany(sql, binds, options, function (err, result) {
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if (err)
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return cb(err, conn);
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else {
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console.log("rowsAffected is:", result.rowsAffected);
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console.log("Out binds:");
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for (let i = 0; i < result.outBinds.length; i++) {
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console.log("-->", result.outBinds[i]);
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}
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return cb(null, conn);
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}
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});
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};
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async.waterfall(
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[
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doconnect,
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dotruncate,
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doinsert,
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dodelete
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],
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function (err, conn) {
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if (err) { console.error("In waterfall error cb: ==>", err, "<=="); }
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if (conn)
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dorelease(conn);
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});
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