452 lines
16 KiB
JavaScript
452 lines
16 KiB
JavaScript
/* Copyright (c) 2016, 2023, 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 https://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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* 14. stream2.js
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*
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* DESCRIPTION
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* Testing driver query results via stream feature.
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*
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*****************************************************************************/
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'use strict';
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const oracledb = require('oracledb');
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const assert = require('assert');
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const dbConfig = require('./dbconfig.js');
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describe('14. stream2.js', function() {
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let connection = null;
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let rowsAmount = 217;
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before(async function() {
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connection = await oracledb.getConnection(dbConfig);
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let proc = "BEGIN \n" +
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" DECLARE \n" +
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" e_table_exists EXCEPTION; \n" +
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" PRAGMA EXCEPTION_INIT(e_table_exists, -00942);\n " +
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" BEGIN \n" +
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" EXECUTE IMMEDIATE ('DROP TABLE nodb_stream2 PURGE'); \n" +
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" EXCEPTION \n" +
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" WHEN e_table_exists \n" +
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" THEN NULL; \n" +
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" END; \n" +
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" EXECUTE IMMEDIATE (' \n" +
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" CREATE TABLE nodb_stream2 ( \n" +
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" employee_id NUMBER, \n" +
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" employee_name VARCHAR2(20), \n" +
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" employee_history CLOB \n" +
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" ) \n" +
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" '); \n" +
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"END; ";
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await connection.execute(proc);
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proc = "DECLARE \n" +
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" x NUMBER := 0; \n" +
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" n VARCHAR2(20); \n" +
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" clobData CLOB; \n" +
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"BEGIN \n" +
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" FOR i IN 1..217 LOOP \n" +
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" x := x + 1; \n" +
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" n := 'staff ' || x; \n" +
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" INSERT INTO nodb_stream2 VALUES (x, n, EMPTY_CLOB()) RETURNING employee_history INTO clobData; \n" +
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" DBMS_LOB.WRITE(clobData, 20, 1, '12345678901234567890'); \n" +
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" END LOOP; \n" +
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"end; ";
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await connection.execute(proc);
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}); // before
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after(async function() {
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await connection.execute("DROP TABLE nodb_stream2 PURGE");
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await connection.close();
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}); // after
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it('14.1 Bind by position and return an array', async function() {
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let sql = 'SELECT employee_name FROM nodb_stream2 WHERE employee_id = :1';
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let stream = connection.queryStream(sql, [40]);
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await new Promise((resolve, reject) => {
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stream.on('data', function(data) {
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assert(data);
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assert.deepStrictEqual(data, ['staff 40']);
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});
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stream.on('end', stream.destroy);
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stream.on('error', reject);
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stream.on('close', resolve);
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});
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}); // 14.1
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it('14.2 Bind by name and return an array', async function() {
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let sql = 'SELECT employee_name FROM nodb_stream2 WHERE employee_id = :id';
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let stream = connection.queryStream(sql, {id: 40});
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await new Promise((resolve, reject) => {
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stream.on('data', function(data) {
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assert(data);
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assert.deepStrictEqual(data, ['staff 40']);
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});
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stream.on('end', stream.destroy);
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stream.on('error', reject);
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stream.on('close', resolve);
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});
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}); // 14.2
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it('14.3 Bind by position and return an object', async function() {
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let sql = 'SELECT employee_name FROM nodb_stream2 WHERE employee_id = :1';
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let stream = connection.queryStream(sql, [40], {outFormat: oracledb.OUT_FORMAT_OBJECT});
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await new Promise((resolve, reject) => {
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stream.on('data', function(data) {
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assert(data);
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assert.strictEqual(data.EMPLOYEE_NAME, 'staff 40');
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});
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stream.on('end', stream.destroy);
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stream.on('error', reject);
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stream.on('close', resolve);
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});
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}); // 14.3
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it('14.4 Bind by name and return an object', async function() {
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let sql = 'SELECT employee_name FROM nodb_stream2 WHERE employee_id = :id';
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let stream = connection.queryStream(sql, {id: 40}, {outFormat: oracledb.OUT_FORMAT_OBJECT});
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await new Promise((resolve, reject) => {
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stream.on('data', function(data) {
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assert(data);
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assert.strictEqual(data.EMPLOYEE_NAME, 'staff 40');
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});
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stream.on('end', stream.destroy);
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stream.on('error', reject);
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stream.on('close', resolve);
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});
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}); // 14.4
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it('14.5 explicitly setting resultSet option to be false takes no effect', async function() {
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let sql = 'SELECT employee_name FROM nodb_stream2 WHERE employee_id = :1';
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let stream = connection.queryStream(sql, [40], {resultSet: false});
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await new Promise((resolve, reject) => {
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stream.on('data', function(data) {
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assert(data);
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assert.deepStrictEqual(data, ['staff 40']);
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});
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stream.on('end', stream.destroy);
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stream.on('error', reject);
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stream.on('close', resolve);
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});
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}); // 14.5
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it('14.6 maxRows option is ignored as expect', async function() {
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let sql = 'SELECT employee_name FROM nodb_stream2 ORDER BY employee_name';
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let stream = connection.queryStream(sql, [], {maxRows: 40});
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let rowCount = 0;
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await new Promise((resolve, reject) => {
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stream.on('data', function(data) {
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assert(data);
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rowCount++;
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});
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stream.on('end', function() {
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assert.strictEqual(rowCount, rowsAmount);
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stream.destroy();
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});
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stream.on('error', reject);
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stream.on('close', resolve);
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});
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}); // 14.6
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it('14.7 Negative - queryStream() has no parameters', function() {
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assert.throws(
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function() {
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connection.queryStream();
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},
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/NJS-009: invalid number of parameters/
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);
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}); //14.7
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it('14.8 metadata event - single column', async function() {
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let sql = 'SELECT employee_name FROM nodb_stream2 WHERE employee_id = :id';
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let stream = connection.queryStream(sql, { id: 40 });
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let metaDataRead = false;
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await new Promise((resolve, reject) => {
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stream.on('metadata', function(metaData) {
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assert.strictEqual(metaData[0].name, 'EMPLOYEE_NAME');
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metaDataRead = true;
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});
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stream.on('data', function(data) {
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assert(data);
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assert.strictEqual(metaDataRead, true);
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});
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stream.on('end', stream.destroy);
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stream.on('error', reject);
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stream.on('close', resolve);
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});
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}); // 14.8
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it('14.9 metadata event - multiple columns', async function() {
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let sql = 'SELECT employee_name, employee_history FROM nodb_stream2 WHERE employee_id = :id';
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let stream = connection.queryStream(sql, { id: 40 });
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let metaDataRead = false;
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await new Promise((resolve, reject) => {
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stream.on('metadata', function(metaData) {
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assert.strictEqual(metaData[0].name, 'EMPLOYEE_NAME');
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assert.strictEqual(metaData[1].name, 'EMPLOYEE_HISTORY');
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metaDataRead = true;
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});
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stream.on('data', function(data) {
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assert(data);
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data[1].destroy(); // close the CLOB
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assert.strictEqual(metaDataRead, true);
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});
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stream.on('end', stream.destroy);
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stream.on('error', reject);
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stream.on('close', resolve);
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});
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}); // 14.9
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it('14.10 metadata event - all column names occurring', async function() {
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let sql = 'SELECT * FROM nodb_stream2 WHERE employee_id = :id';
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let stream = connection.queryStream(sql, { id: 40 });
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let metaDataRead = false;
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await new Promise((resolve, reject) => {
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stream.on('metadata', function(metaData) {
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assert.strictEqual(metaData[0].name, 'EMPLOYEE_ID');
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assert.strictEqual(metaData[1].name, 'EMPLOYEE_NAME');
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assert.strictEqual(metaData[2].name, 'EMPLOYEE_HISTORY');
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metaDataRead = true;
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});
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stream.on('data', function(data) {
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assert(data);
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data[2].destroy(); // close the CLOB
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assert.strictEqual(metaDataRead, true);
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});
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stream.on('end', stream.destroy);
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stream.on('error', reject);
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stream.on('close', resolve);
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});
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}); // 14.10
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it('14.11 metadata event - no return rows', async function() {
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let sql = 'SELECT employee_name FROM nodb_stream2 WHERE employee_id = :id';
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let stream = connection.queryStream(sql, { id: 400 });
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let metaDataRead = false;
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await new Promise((resolve, reject) => {
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stream.on('metadata', function(metaData) {
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assert.strictEqual(metaData[0].name, 'EMPLOYEE_NAME');
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metaDataRead = true;
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});
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stream.on('data', function(data) {
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assert(data);
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assert.strictEqual(metaDataRead, true);
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});
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stream.on('end', stream.destroy);
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stream.on('error', reject);
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stream.on('close', resolve);
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});
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}); // 14.11
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it('14.12 metadata event - case sensitive columns', async function() {
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const proc = "BEGIN \n" +
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" DECLARE \n" +
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" e_table_missing EXCEPTION; \n" +
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" PRAGMA EXCEPTION_INIT(e_table_missing, -00942);\n " +
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" BEGIN \n" +
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" EXECUTE IMMEDIATE ('DROP TABLE nodb_streamcases PURGE'); \n" +
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" EXCEPTION \n" +
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" WHEN e_table_missing \n" +
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" THEN NULL; \n" +
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" END; \n" +
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" EXECUTE IMMEDIATE (' \n" +
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" CREATE TABLE nodb_streamcases ( \n" +
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" id NUMBER, \n" +
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' "nAmE" VARCHAR2(20) \n' +
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" ) \n" +
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" '); \n" +
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" EXECUTE IMMEDIATE (' \n" +
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" INSERT INTO nodb_streamcases VALUES (23, ''Changjie'') \n" +
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" '); \n" +
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" EXECUTE IMMEDIATE (' \n" +
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" INSERT INTO nodb_streamcases VALUES (24, ''Nancy'') \n" +
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" '); \n" +
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" EXECUTE IMMEDIATE (' \n" +
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" INSERT INTO nodb_streamcases VALUES (25, ''Chris'') \n" +
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" '); \n" +
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"END; ";
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await connection.execute(proc);
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let sql = 'SELECT "nAmE" FROM nodb_streamcases ORDER BY id';
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let stream = connection.queryStream(sql);
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let resultArray = new Array();
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let metaDataRead = false;
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await new Promise((resolve, reject) => {
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stream.on('metadata', function(metaData) {
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assert.strictEqual(metaData[0].name, 'nAmE');
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metaDataRead = true;
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});
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stream.on('error', reject);
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stream.on('data', function(data) {
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assert(data);
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resultArray.push(data);
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assert.strictEqual(metaDataRead, true);
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});
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stream.on('end', function() {
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assert.deepStrictEqual(
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resultArray,
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[ [ 'Changjie' ], [ 'Nancy' ], [ 'Chris' ] ]
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);
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stream.destroy();
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});
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stream.on('close', resolve);
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});
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await connection.execute("DROP TABLE nodb_streamcases PURGE");
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}); // 14.12
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it('14.13 metadata event - large number of columns', async function() {
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let column_size = 10;
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let columns_string = genColumns(column_size);
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function genColumns(size) {
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let buffer = [];
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for (let i = 0; i < size; i++) {
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buffer[i] = " column_" + i + " NUMBER";
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}
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return buffer.join();
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}
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let table_name = "nodb_streamstess";
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let sqlSelect = "SELECT * FROM " + table_name;
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let sqlDrop = "DROP TABLE " + table_name + " PURGE";
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let proc = "BEGIN \n" +
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" DECLARE \n" +
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" e_table_missing EXCEPTION; \n" +
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" PRAGMA EXCEPTION_INIT(e_table_missing, -00942);\n " +
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" BEGIN \n" +
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" EXECUTE IMMEDIATE ('DROP TABLE nodb_streamstess PURGE'); \n" +
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" EXCEPTION \n" +
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" WHEN e_table_missing \n" +
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" THEN NULL; \n" +
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" END; \n" +
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" EXECUTE IMMEDIATE (' \n" +
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" CREATE TABLE nodb_streamstess ( \n" +
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columns_string +
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" ) \n" +
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" '); \n" +
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"END; ";
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await connection.execute(proc);
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let stream = connection.queryStream(sqlSelect);
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let metaDataRead = false;
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await new Promise((resolve, reject) => {
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stream.on('metadata', function(metaData) {
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for (let i = 0; i < column_size; i++) {
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assert.strictEqual(metaData[i].name, 'COLUMN_' + i);
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}
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metaDataRead = true;
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});
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stream.on('data', function(data) {
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assert(data);
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assert.strictEqual(metaDataRead, true);
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});
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stream.on('error', reject);
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stream.on('end', stream.destroy);
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stream.on('close', resolve);
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});
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await connection.execute(sqlDrop);
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}); // 14.13
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it('14.14 metadata event - single character column', async function() {
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let tableName = "nodb_streamsinglechar";
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let sqlCreate =
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"BEGIN \n" +
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" DECLARE \n" +
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" e_table_missing EXCEPTION; \n" +
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" PRAGMA EXCEPTION_INIT(e_table_missing, -00942); \n" +
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" BEGIN \n" +
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" EXECUTE IMMEDIATE ('DROP TABLE " + tableName + " PURGE'); \n" +
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" EXCEPTION \n" +
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" WHEN e_table_missing \n" +
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" THEN NULL; \n" +
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" END; \n" +
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" EXECUTE IMMEDIATE (' \n" +
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" CREATE TABLE " + tableName + " ( \n" +
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" a VARCHAR2(20), \n" +
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' b VARCHAR2(20) \n' +
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" ) \n" +
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" '); \n" +
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"END; \n";
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let sqlSelect = "SELECT * FROM " + tableName;
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let sqlDrop = "DROP TABLE " + tableName + " PURGE";
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await connection.execute(sqlCreate);
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let stream = connection.queryStream(sqlSelect);
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let metaDataRead = false;
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await new Promise((resolve, reject) => {
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stream.on('metadata', function(metaData) {
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assert.strictEqual(metaData[0].name, 'A');
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assert.strictEqual(metaData[1].name, 'B');
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metaDataRead = true;
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});
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stream.on('error', reject);
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stream.on('data', function() {
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assert.strictEqual(metaDataRead, true);
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});
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stream.on('end', stream.destroy);
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stream.on('close', resolve);
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});
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await connection.execute(sqlDrop);
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}); // 14.14
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it('14.15 metadata event - duplicate column alias', async function() {
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let stream = connection.queryStream("SELECT 1 a, 'abc' a FROM dual");
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let metaDataRead = false;
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await new Promise((resolve, reject) => {
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stream.on('metadata', function(metaData) {
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assert.strictEqual(metaData[0].name, 'A');
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assert.strictEqual(metaData[1].name, 'A_1');
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metaDataRead = true;
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});
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stream.on('error', reject);
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stream.on('data', function(data) {
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assert(data);
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assert.deepStrictEqual(data, [1, 'abc']);
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assert.strictEqual(metaDataRead, true);
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});
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stream.on('end', stream.destroy);
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stream.on('close', resolve);
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});
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}); // 14.15
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});
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