645 lines
17 KiB
JavaScript
645 lines
17 KiB
JavaScript
/* Copyright (c) 2016, 2022, Oracle and/or its affiliates. */
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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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* 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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var oracledb = require('oracledb');
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var should = require('should');
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var async = require('async');
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var dbConfig = require('./dbconfig.js');
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describe('14. stream2.js', function() {
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var connection = null;
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var rowsAmount = 217;
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before(function(done) {
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async.series([
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function getConn(cb) {
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oracledb.getConnection(dbConfig, function(err, conn) {
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should.not.exist(err);
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connection = conn;
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cb();
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});
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},
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function createTab(cb) {
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var 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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connection.execute(
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proc,
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function(err) {
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should.not.exist(err);
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cb();
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}
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);
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},
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function insertRows(cb) {
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var 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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connection.execute(
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proc,
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function(err) {
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should.not.exist(err);
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cb();
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}
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);
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}
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], done);
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}); // before
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after(function(done) {
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async.series([
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function(callback) {
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connection.execute(
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"DROP TABLE nodb_stream2 PURGE",
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function(err) {
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should.not.exist(err);
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callback();
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}
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);
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},
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function(callback) {
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connection.release(function(err) {
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should.not.exist(err);
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callback();
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});
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},
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], done);
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}); // after
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it('14.1 Bind by position and return an array', function(done) {
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var sql = 'SELECT employee_name FROM nodb_stream2 WHERE employee_id = :1';
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var stream = connection.queryStream(sql, [40]);
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stream.on('error', function(error) {
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should.not.exist(error);
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});
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stream.on('data', function(data) {
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should.exist(data);
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data.should.eql(['staff 40']);
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});
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stream.on('end', function() {
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stream.destroy();
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});
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stream.on('close', done);
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});
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it('14.2 Bind by name and return an array', function(done) {
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var sql = 'SELECT employee_name FROM nodb_stream2 WHERE employee_id = :id';
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var stream = connection.queryStream(sql, {id: 40});
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stream.on('error', function(error) {
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should.not.exist(error);
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});
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stream.on('data', function(data) {
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should.exist(data);
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data.should.eql(['staff 40']);
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});
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stream.on('end', function() {
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stream.destroy();
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});
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stream.on('close', done);
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});
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it('14.3 Bind by position and return an object', function(done) {
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var sql = 'SELECT employee_name FROM nodb_stream2 WHERE employee_id = :1';
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var stream = connection.queryStream(sql, [40], {outFormat: oracledb.OUT_FORMAT_OBJECT});
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stream.on('error', function(error) {
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should.not.exist(error);
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});
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stream.on('data', function(data) {
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should.exist(data);
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(data.EMPLOYEE_NAME).should.eql('staff 40');
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});
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stream.on('end', function() {
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stream.destroy();
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});
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stream.on('close', done);
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});
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it('14.4 Bind by name and return an object', function(done) {
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var sql = 'SELECT employee_name FROM nodb_stream2 WHERE employee_id = :id';
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var stream = connection.queryStream(sql, {id: 40}, {outFormat: oracledb.OUT_FORMAT_OBJECT});
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stream.on('error', function(error) {
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should.not.exist(error);
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});
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stream.on('data', function(data) {
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should.exist(data);
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(data.EMPLOYEE_NAME).should.eql('staff 40');
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});
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stream.on('end', function() {
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stream.destroy();
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});
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stream.on('close', done);
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});
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it('14.5 explicitly setting resultSet option to be false takes no effect', function(done) {
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var sql = 'SELECT employee_name FROM nodb_stream2 WHERE employee_id = :1';
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var stream = connection.queryStream(sql, [40], {resultSet: false});
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stream.on('error', function(error) {
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should.not.exist(error);
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});
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stream.on('data', function(data) {
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should.exist(data);
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data.should.eql(['staff 40']);
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});
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stream.on('end', function() {
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stream.destroy();
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});
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stream.on('close', done);
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});
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it('14.6 maxRows option is ignored as expect', function(done) {
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var sql = 'SELECT employee_name FROM nodb_stream2 ORDER BY employee_name';
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var stream = connection.queryStream(sql, [], {maxRows: 40});
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stream.on('error', function(error) {
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should.not.exist(error);
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});
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var rowCount = 0;
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stream.on('data', function(data) {
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should.exist(data);
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rowCount++;
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});
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stream.on('end', function() {
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rowCount.should.eql(rowsAmount);
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stream.destroy();
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});
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stream.on('close', done);
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});
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it('14.7 Negative - queryStream() has no parameters', function(done) {
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should.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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done();
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});
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it('14.10 metadata event - single column', function(done) {
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var sql = 'SELECT employee_name FROM nodb_stream2 WHERE employee_id = :id';
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var stream = connection.queryStream(sql, { id: 40 });
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var metaDataRead = false;
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stream.on('metadata', function(metaData) {
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should.deepEqual(
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metaData,
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[ { name: 'EMPLOYEE_NAME' } ]
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);
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metaDataRead = true;
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});
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stream.on('error', function(error) {
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should.not.exist(error);
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});
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stream.on('data', function(data) {
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should.exist(data);
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should.equal(metaDataRead, true);
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});
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stream.on('end', function() {
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stream.destroy();
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});
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stream.on('close', done);
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});
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it('14.11 metadata event - multiple columns', function(done) {
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var sql = 'SELECT employee_name, employee_history FROM nodb_stream2 WHERE employee_id = :id';
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var stream = connection.queryStream(sql, { id: 40 });
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var metaDataRead = false;
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stream.on('metadata', function(metaData) {
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should.deepEqual(
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metaData,
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[ { name: 'EMPLOYEE_NAME' },
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{ name: 'EMPLOYEE_HISTORY' } ]
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);
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metaDataRead = true;
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});
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stream.on('error', function(error) {
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should.not.exist(error);
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});
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stream.on('data', function(data) {
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should.exist(data);
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data[1].destroy(); // close the CLOB
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should.equal(metaDataRead, true);
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});
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stream.on('end', function() {
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stream.destroy();
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});
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stream.on('close', done);
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});
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it('14.12 metadata event - all column names occurring', function(done) {
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var sql = 'SELECT * FROM nodb_stream2 WHERE employee_id = :id';
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var stream = connection.queryStream(sql, { id: 40 });
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var metaDataRead = false;
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stream.on('metadata', function(metaData) {
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should.deepEqual(
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metaData,
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[ { name: 'EMPLOYEE_ID' },
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{ name: 'EMPLOYEE_NAME' },
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{ name: 'EMPLOYEE_HISTORY' } ]
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);
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metaDataRead = true;
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});
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stream.on('error', function(error) {
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should.not.exist(error);
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});
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stream.on('data', function(data) {
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should.exist(data);
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data[2].destroy(); // close the CLOB
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should.equal(metaDataRead, true);
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});
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stream.on('end', function() {
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stream.destroy();
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});
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stream.on('close', done);
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});
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it('14.13 metadata event - no return rows', function(done) {
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var sql = 'SELECT employee_name FROM nodb_stream2 WHERE employee_id = :id';
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var stream = connection.queryStream(sql, { id: 400 });
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var metaDataRead = false;
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stream.on('metadata', function(metaData) {
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should.deepEqual(
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metaData,
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[ { name: 'EMPLOYEE_NAME' } ]
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);
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metaDataRead = true;
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});
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stream.on('error', function(error) {
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should.not.exist(error);
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});
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stream.on('data', function(data) {
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should.exist(data);
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should.equal(metaDataRead, true);
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});
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stream.on('end', function() {
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stream.destroy();
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});
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stream.on('close', done);
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});
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it('14.15 metadata event - case sensitive columns', function(done) {
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async.series([
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function(cb) {
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var 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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connection.execute(
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proc,
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function(err) {
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should.not.exist(err);
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cb();
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}
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);
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},
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function(cb) {
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var sql = 'SELECT "nAmE" FROM nodb_streamcases ORDER BY id';
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var stream = connection.queryStream(sql);
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var resultArray = new Array();
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var metaDataRead = false;
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stream.on('metadata', function(metaData) {
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should.deepEqual(
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metaData,
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[ { name: 'nAmE' } ]
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);
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metaDataRead = true;
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});
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stream.on('error', function(error) {
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should.not.exist(error);
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});
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stream.on('data', function(data) {
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should.exist(data);
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resultArray.push(data);
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should.equal(metaDataRead, true);
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});
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stream.on('end', function() {
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should.deepEqual(
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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', function() {
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cb();
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});
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},
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function(cb) {
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connection.execute(
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"DROP TABLE nodb_streamcases PURGE",
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function(err) {
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should.not.exist(err);
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cb();
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}
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);
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}
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], done);
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}); // 14.15
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it('14.16 metadata event - large number of columns', function(done) {
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var column_size = 10;
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var columns_string = genColumns(column_size);
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function genColumns(size) {
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var buffer = [];
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for (var 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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var table_name = "nodb_streamstess";
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var sqlSelect = "SELECT * FROM " + table_name;
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var sqlDrop = "DROP TABLE " + table_name + " PURGE";
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var 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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async.series([
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function(cb) {
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connection.execute(
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proc,
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function(err) {
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should.not.exist(err);
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cb();
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}
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);
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},
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function(cb) {
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var stream = connection.queryStream(sqlSelect);
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var metaDataRead = false;
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stream.on('metadata', function(metaData) {
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for (var i = 0; i < column_size; i++) {
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metaData[i].name.should.eql('COLUMN_' + i);
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}
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metaDataRead = true;
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});
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stream.on('error', function(error) {
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should.not.exist(error);
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});
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stream.on('data', function(data) {
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should.exist(data);
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should.equal(metaDataRead, true);
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});
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stream.on('end', function() {
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stream.destroy();
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});
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stream.on('close', cb);
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},
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function(cb) {
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connection.execute(
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sqlDrop,
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function(err) {
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should.not.exist(err);
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cb();
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}
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);
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}
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], done);
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}); // 14.16
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it('14.17 metadata event - single character column', function(done) {
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var tableName = "nodb_streamsinglechar";
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var 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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var sqlSelect = "SELECT * FROM " + tableName;
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var sqlDrop = "DROP TABLE " + tableName + " PURGE";
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async.series([
|
|
function(cb) {
|
|
connection.execute(
|
|
sqlCreate,
|
|
function(err) {
|
|
should.not.exist(err);
|
|
cb();
|
|
}
|
|
);
|
|
},
|
|
function(cb) {
|
|
var stream = connection.queryStream(sqlSelect);
|
|
|
|
var metaDataRead = false;
|
|
stream.on('metadata', function(metaData) {
|
|
should.deepEqual(
|
|
metaData,
|
|
[ { name: 'A' }, { name: 'B' } ]
|
|
);
|
|
metaDataRead = true;
|
|
});
|
|
|
|
stream.on('error', function(error) {
|
|
should.not.exist(error);
|
|
});
|
|
|
|
stream.on('data', function() {
|
|
should.equal(metaDataRead, true);
|
|
});
|
|
|
|
stream.on('end', function() {
|
|
stream.destroy();
|
|
});
|
|
|
|
stream.on('close', cb);
|
|
},
|
|
function(cb) {
|
|
connection.execute(
|
|
sqlDrop,
|
|
function(err) {
|
|
should.not.exist(err);
|
|
cb();
|
|
}
|
|
);
|
|
}
|
|
], done);
|
|
}); // 14.17
|
|
|
|
it('14.18 metadata event - duplicate column alias', function(done) {
|
|
|
|
var stream = connection.queryStream("SELECT 1 a, 'abc' a FROM dual");
|
|
|
|
var metaDataRead = false;
|
|
stream.on('metadata', function(metaData) {
|
|
should.deepEqual(
|
|
metaData,
|
|
[ { name: 'A' }, { name: 'A' } ]
|
|
);
|
|
metaDataRead = true;
|
|
});
|
|
|
|
stream.on('error', function(error) {
|
|
should.not.exist(error);
|
|
});
|
|
|
|
stream.on('data', function(data) {
|
|
should.exist(data);
|
|
data.should.eql([1, 'abc']);
|
|
should.equal(metaDataRead, true);
|
|
});
|
|
|
|
stream.on('end', function() {
|
|
stream.destroy();
|
|
});
|
|
|
|
stream.on('close', done);
|
|
});
|
|
});
|