162 lines
4.5 KiB
JavaScript
162 lines
4.5 KiB
JavaScript
/* Copyright (c) 2019, 2022, Oracle and/or its affiliates. */
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/******************************************************************************
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*
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* This software is dual-licensed to you under the Universal Permissive License
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* (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl and Apache License
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* 2.0 as shown at http://www.apache.org/licenses/LICENSE-2.0. You may choose
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* either license.
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*
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* If you elect to accept the software under the Apache License, Version 2.0,
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* the following applies:
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://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,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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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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* selectvarray.js
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*
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* DESCRIPTION
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* Shows inserting and selecting from a VARRAY column
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*
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* This example requires node-oracledb 4 or later.
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*
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* This example uses Node 8's async/await syntax.
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*
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*****************************************************************************/
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'use strict';
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const fs = require('fs');
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const oracledb = require('oracledb');
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const dbConfig = require('./dbconfig.js');
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// On Windows and macOS, you can specify the directory containing the Oracle
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// Client Libraries at runtime, or before Node.js starts. On other platforms
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// the system library search path must always be set before Node.js is started.
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// See the node-oracledb installation documentation.
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// If the search path is not correct, you will get a DPI-1047 error.
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let libPath;
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if (process.platform === 'win32') { // Windows
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libPath = 'C:\\oracle\\instantclient_19_12';
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} else if (process.platform === 'darwin') { // macOS
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libPath = process.env.HOME + '/Downloads/instantclient_19_8';
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}
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if (libPath && fs.existsSync(libPath)) {
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oracledb.initOracleClient({ libDir: libPath });
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}
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async function run() {
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let connection;
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try {
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connection = await oracledb.getConnection(dbConfig);
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// Setup
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const stmts = [
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`DROP TABLE no_sports`,
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`DROP TYPE teamtype`,
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`DROP TYPE playertype`,
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`CREATE TYPE playertype AS OBJECT (
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shirtnumber NUMBER,
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name VARCHAR2(20));`,
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`CREATE TYPE teamtype AS VARRAY(10) OF playertype;`,
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`CREATE TABLE no_sports (sportname VARCHAR2(20), team teamtype)`,
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];
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for (const s of stmts) {
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try {
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await connection.execute(s);
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} catch (e) {
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if (e.errorNum != 942 && e.errorNum != 4043)
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console.error(e);
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}
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}
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// Get a prototype object representing the VARRAY.
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// Only the top level type needs to be acquired.
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// Use a fully qualified name, where possible.
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const TeamTypeClass = await connection.getDbObjectClass("TEAMTYPE");
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// Insert with explicit constructor
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const hockeyTeam = new TeamTypeClass(
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[
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{SHIRTNUMBER: 11, NAME: 'Elizabeth'},
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{SHIRTNUMBER: 22, NAME: 'Frank'},
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]
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);
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await connection.execute(
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`INSERT INTO no_sports (sportname, team) VALUES (:sn, :t)`,
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{
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sn: "Hockey",
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t: hockeyTeam
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});
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// Insert with direct bind
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await connection.execute(
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`INSERT INTO no_sports (sportname, team) VALUES (:sn, :t)`,
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{
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sn: "Badminton",
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t: {
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val:
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[
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{ SHIRTNUMBER: 10, NAME: 'Alison' },
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{ SHIRTNUMBER: 20, NAME: 'Bob' },
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{ SHIRTNUMBER: 30, NAME: 'Charlie' },
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{ SHIRTNUMBER: 40, NAME: 'Doug' }
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],
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type: TeamTypeClass // could also use 'type: "TEAMTYPE"'
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}
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});
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// Query the new data back
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let result = await connection.execute(
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`SELECT sportname, team FROM no_sports`,
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[],
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{
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outFormat: oracledb.OUT_FORMAT_OBJECT
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}
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);
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for (const row of result.rows) {
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console.log("The " + row.SPORTNAME + " team players are:");
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for (const player of row.TEAM) {
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console.log(" " + player.NAME);
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}
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// console.log(JSON.stringify(row.TEAM)); // can easily stringify
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}
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} catch (err) {
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console.error(err);
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} finally {
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if (connection) {
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try {
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await connection.close();
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} catch (err) {
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console.error(err);
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}
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}
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}
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}
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run();
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