274 lines
8.8 KiB
JavaScript
274 lines
8.8 KiB
JavaScript
/* Copyright (c) 2015, 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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* The node-oracledb test suite uses 'mocha', 'should' and 'async'.
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* See LICENSE.md for relevant licenses.
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*
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* NAME
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* 40. dataTypeClob.js
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*
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* DESCRIPTION
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* Testing Oracle data type support - CLOB.
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* This test corresponds to example files:
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* clobinsert1.js, clobstream1.js and clobstream2.js
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* Firstly, reads text from clobexample.txt and INSERTs it into a CLOB column.
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* Secondly, SELECTs a CLOB and pipes it to a file, clobstreamout.txt
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* Thirdly, SELECTs the CLOB and compares it with the content in clobexample.txt.
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* Fourthly, query the CLOB with Object outFormat.
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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 fs = require('fs');
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var async = require('async');
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var should = require('should');
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var dbConfig = require('./dbconfig.js');
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var assist = require('./dataTypeAssist.js');
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var inFileName = './test/clobexample.txt'; // the file with text to be inserted into the database
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var outFileName = './test/clobstreamout.txt';
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describe('40. dataTypeClob.js', function() {
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var connection = null;
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var tableName = "nodb_myclobs";
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before('get one connection', function(done) {
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oracledb.getConnection(
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{
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user: dbConfig.user,
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password: dbConfig.password,
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connectString: dbConfig.connectString
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},
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function(err, conn) {
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should.not.exist(err);
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connection = conn;
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done();
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}
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);
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});
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after('release connection', function(done) {
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connection.release( function(err) {
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should.not.exist(err);
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done();
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});
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});
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describe('40.1 testing CLOB data type', function() {
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before('create table', function(done) {
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assist.createTable(connection, tableName, done);
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});
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after(function(done) {
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connection.execute(
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"DROP table " + tableName + " PURGE",
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function(err) {
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should.not.exist(err);
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done();
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}
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);
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});
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it('40.1.1 stores CLOB value correctly', function(done) {
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connection.should.be.ok();
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async.series([
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function clobinsert1(callback) {
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var lobFinishEventFired = false;
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setTimeout( function() {
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lobFinishEventFired.should.equal(true, "lob does not fire 'finish' event!");
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callback();
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}, 2000);
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connection.execute(
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"INSERT INTO nodb_myclobs (num, content) VALUES (:n, EMPTY_CLOB()) RETURNING content INTO :lobbv",
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{ n: 1, lobbv: {type: oracledb.CLOB, dir: oracledb.BIND_OUT} },
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{ autoCommit: false }, // a transaction needs to span the INSERT and pipe()
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function(err, result) {
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should.not.exist(err);
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(result.rowsAffected).should.be.exactly(1);
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(result.outBinds.lobbv.length).should.be.exactly(1);
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var inStream = fs.createReadStream(inFileName);
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var lob = result.outBinds.lobbv[0];
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lob.on('error', function(err) {
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should.not.exist(err, "lob.on 'error' event");
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});
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inStream.on('error', function(err) {
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should.not.exist(err, "inStream.on 'error' event");
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});
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lob.on('finish', function() {
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lobFinishEventFired = true;
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// now commit updates
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connection.commit( function(err) {
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should.not.exist(err);
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});
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});
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inStream.pipe(lob); // copies the text to the CLOB
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}
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);
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},
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function clobstream1(callback) {
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var streamFinishEventFired = false;
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setTimeout( function() {
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streamFinishEventFired.should.equal(true, "stream does not call 'Finish' Event!");
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callback();
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}, 2000);
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connection.execute(
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"SELECT content FROM nodb_myclobs WHERE num = :n",
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{ n: 1 },
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function(err, result) {
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should.not.exist(err);
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var lob = result.rows[0][0];
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should.exist(lob);
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lob.setEncoding('utf8');
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lob.on('error', function(err) {
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should.not.exist(err, "lob.on 'error' event");
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});
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var outStream = fs.createWriteStream(outFileName);
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outStream.on('error', function(err) {
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should.not.exist(err, "outStream.on 'error' event");
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});
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lob.pipe(outStream);
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outStream.on('finish', function() {
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fs.readFile( inFileName, { encoding: 'utf8' }, function(err, originalData) {
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should.not.exist(err);
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fs.readFile( outFileName, { encoding: 'utf8' }, function(err, generatedData) {
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should.not.exist(err);
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originalData.should.equal(generatedData);
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streamFinishEventFired = true;
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});
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});
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});
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}
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);
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},
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function clobstream2(callback) {
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var lobEndEventFired = false;
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var lobDataEventFired = false;
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setTimeout( function(){
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lobDataEventFired.should.equal(true, "lob does not call 'data' event!");
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lobEndEventFired.should.equal(true, "lob does not call 'end' event!");
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callback();
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}, 2000);
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connection.execute(
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"SELECT content FROM nodb_myclobs WHERE num = :n",
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{ n: 1 },
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function(err, result) {
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should.not.exist(err);
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var clob = '';
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var lob = result.rows[0][0];
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should.exist(lob);
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lob.setEncoding('utf8'); // set the encoding so we get a 'string' not a 'buffer'
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lob.on('data', function(chunk) {
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// console.log("lob.on 'data' event");
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// console.log(' - got %d bytes of data', chunk.length);
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lobDataEventFired = true;
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clob += chunk;
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});
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lob.on('end', function() {
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fs.readFile( inFileName, { encoding: 'utf8' }, function(err, data) {
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should.not.exist(err);
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lobEndEventFired = true;
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data.length.should.be.exactly(clob.length);
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data.should.equal(clob);
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});
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});
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lob.on('error', function(err) {
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should.not.exist(err, "lob.on 'error' event");
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});
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}
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);
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},
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function objectOutFormat(callback) {
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var lobEndEventFired = false;
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var lobDataEventFired = false;
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setTimeout( function(){
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lobDataEventFired.should.equal(true, "lob does not call 'data' event!");
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lobEndEventFired.should.equal(true, "lob does not call 'end' event!");
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callback();
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}, 2000);
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connection.execute(
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"SELECT content FROM nodb_myclobs WHERE num = :n",
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{ n: 1 },
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{ outFormat: oracledb.OBJECT },
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function(err, result) {
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should.not.exist(err);
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var clob = '';
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var row = result.rows[0];
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var lob = row['CONTENT'];
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lob.setEncoding('utf8');
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lob.on('data', function(chunk) {
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lobDataEventFired = true;
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clob = clob + chunk;
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});
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lob.on('end', function() {
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lobEndEventFired = true;
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});
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lob.on('error', function(err) {
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should.not.exist(err, "lob.on 'error' event");
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});
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}
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);
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},
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function deleteOutFile(callback) {
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fs.unlink(outFileName, 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); // async
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}); // 40.1.1
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}); // 40.1
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describe('40.2 stores null value correctly', function() {
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it('40.2.1 testing Null, Empty string and Undefined', function(done) {
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assist.verifyNullValues(connection, tableName, done);
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});
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});
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});
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