517 lines
16 KiB
JavaScript
517 lines
16 KiB
JavaScript
/* Copyright (c) 2015, 2017, 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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* 59. lobResultSet.js
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*
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* DESCRIPTION
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*
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* Inspired by https://github.com/oracle/node-oracledb/issues/210
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* Testing Lob data and result set.
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* Create a table contains Lob data. Read the Lob to result set. Get
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* rows one by one. Read the lob data on each row.
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*
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* NUMBERING RULE
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* Test numbers follow this numbering rule:
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* 1 - 20 are reserved for basic functional tests
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* 21 - 50 are reserved for data type supporting tests
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* 51 onwards are for other tests
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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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describe('59. lobResultSet.js', function() {
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var connection = null;
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var node6plus = false; // assume node runtime version is lower than 6
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before('get one connection', function(done) {
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oracledb.getConnection(dbConfig, function(err, conn) {
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should.not.exist(err);
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// Check whether node runtime version is >= 6 or not
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if ( process.versions["node"].substring (0, 1) >= "6")
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node6plus = true;
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connection = conn;
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done();
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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('59.1 CLOB data', function() {
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var insertID = 1;
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var tableName = "nodb_myclobs";
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var inFileName = './test/clobexample.txt';
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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('drop table', 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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function fetchOneRowFromRS(resultSet, rowsFetched, rowsExpected, callback) {
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resultSet.getRow( function(err, row) {
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should.not.exist(err);
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if (!row) {
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resultSet.close( function(err) {
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should.not.exist(err);
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should.strictEqual(rowsFetched, rowsExpected);
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callback();
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});
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} else {
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var lob = row[1];
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lob.setEncoding('utf8');
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var text = "";
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lob.on('data', function(chunk) {
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text = text + chunk;
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});
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lob.on('end', function() {
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rowsFetched ++;
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fs.readFile(inFileName, { encoding: 'utf8' }, function(err, originalData) {
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should.not.exist(err);
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should.strictEqual(text, originalData);
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});
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fetchOneRowFromRS(resultSet, rowsFetched, rowsExpected, callback);
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});
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lob.on('error', function(err) {
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console.log("lob.on 'error' event");
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console.error(err.message);
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});
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}
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});
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}
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function streamIntoClob(id, cb) {
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connection.execute(
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"INSERT INTO " + tableName + " VALUES (:n, EMPTY_CLOB()) RETURNING content INTO :lobbv",
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{ n: id, lobbv: { type: oracledb.CLOB, dir: oracledb.BIND_OUT } },
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function(err, result) {
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should.not.exist(err);
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var lob = result.outBinds.lobbv[0];
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var inStream = fs.createReadStream(inFileName);
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inStream.pipe(lob);
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inStream.on('end', function() {
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connection.commit( function(err) {
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should.not.exist(err);
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cb(); // insertion done
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});
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});
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inStream.on('error', function(err) {
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should.not.exist(err);
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});
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}
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);
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}
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it('59.1.1 reads clob data one by one row from result set', function(done) {
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var id_1 = insertID++;
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var id_2 = insertID++;
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var id_3 = insertID++;
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async.series([
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function(callback) {
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streamIntoClob(id_1, callback);
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},
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function(callback) {
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streamIntoClob(id_2, callback);
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},
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function(callback) {
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streamIntoClob(id_3, callback);
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},
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function(callback) {
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connection.execute(
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"SELECT num, content FROM " + tableName + " where num = " + id_1 + " or num = " + id_2 + " or num = " + id_3,
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[],
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{ resultSet: true },
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function(err, result) {
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should.not.exist(err);
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var actualRowsFetched = 0; // actual rows read from resultset
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var rowsExpected = 3; // expected rows read from resultSet
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fetchOneRowFromRS(result.resultSet, actualRowsFetched, rowsExpected, callback);
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}
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);
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}
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], done);
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}); // 59.1.1
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it('59.1.2 works with oracledb.maxRows > actual number of rows fetched', function(done) {
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var maxRowsBak = oracledb.maxRows;
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oracledb.maxRows = 10;
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var id_1 = insertID++;
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var id_2 = insertID++;
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var id_3 = insertID++;
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async.series([
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function(callback) {
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streamIntoClob(id_1, callback);
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},
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function(callback) {
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streamIntoClob(id_2, callback);
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},
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function(callback) {
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streamIntoClob(id_3, callback);
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},
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function(callback) {
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connection.execute(
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"SELECT num, content FROM " + tableName + " where num = " + id_1 + " or num = " + id_2 + " or num = " + id_3,
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[],
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{ resultSet: true },
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function(err, result) {
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should.not.exist(err);
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var actualRowsFetched = 0; // actual rows read from resultset
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var rowsExpected = 3; // expected rows read from resultSet
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fetchOneRowFromRS(result.resultSet, actualRowsFetched, rowsExpected, callback);
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}
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);
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},
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function(callback) {
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oracledb.maxRows = maxRowsBak;
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callback();
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}
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], done);
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}); // 59.1.2
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it('59.1.3 works with oracledb.maxRows = actual number of rows fetched', function(done) {
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var maxRowsBak = oracledb.maxRows;
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oracledb.maxRows = 3;
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var id_1 = insertID++;
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var id_2 = insertID++;
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var id_3 = insertID++;
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async.series([
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function(callback) {
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streamIntoClob(id_1, callback);
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},
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function(callback) {
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streamIntoClob(id_2, callback);
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},
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function(callback) {
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streamIntoClob(id_3, callback);
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},
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function(callback) {
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connection.execute(
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"SELECT num, content FROM " + tableName + " where num = " + id_1 + " or num = " + id_2 + " or num = " + id_3,
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[],
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{ resultSet: true },
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function(err, result) {
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should.not.exist(err);
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var actualRowsFetched = 0; // actual rows read from resultset
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var rowsExpected = 3; // expected rows read from resultSet
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fetchOneRowFromRS(result.resultSet, actualRowsFetched, rowsExpected, callback);
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}
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);
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},
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function(callback) {
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oracledb.maxRows = maxRowsBak;
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callback();
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}
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], done);
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}); // 59.1.3
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it('59.1.4 works with oracledb.maxRows < actual number of rows fetched', function(done) {
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var maxRowsBak = oracledb.maxRows;
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oracledb.maxRows = 1;
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var id_1 = insertID++;
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var id_2 = insertID++;
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var id_3 = insertID++;
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async.series([
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function(callback) {
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streamIntoClob(id_1, callback);
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},
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function(callback) {
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streamIntoClob(id_2, callback);
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},
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function(callback) {
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streamIntoClob(id_3, callback);
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},
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function(callback) {
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connection.execute(
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"SELECT num, content FROM " + tableName + " where num = " + id_1 + " or num = " + id_2 + " or num = " + id_3,
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[],
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{ resultSet: true },
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function(err, result) {
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should.not.exist(err);
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var actualRowsFetched = 0; // actual rows read from resultset
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var rowsExpected = 3; // expected rows read from resultSet
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fetchOneRowFromRS(result.resultSet, actualRowsFetched, rowsExpected, callback);
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}
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);
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},
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function(callback) {
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oracledb.maxRows = maxRowsBak;
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callback();
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}
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], done);
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}); // 59.1.4
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}); // 59.1
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describe('59.2 BLOB data', function() {
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var insertID = 1;
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var tableName = "nodb_myblobs";
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var jpgFileName = "./test/fuzzydinosaur.jpg";
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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('drop table', 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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function fetchOneRowFromRS(resultSet, rowsFetched, rowsExpected, callback) {
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resultSet.getRow( function(err, row) {
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should.not.exist(err);
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if (!row) {
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resultSet.close( function(err) {
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should.not.exist(err);
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should.strictEqual(rowsFetched, rowsExpected);
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rowsFetched = 0;
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callback();
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});
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} else {
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var lob = row[1];
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var blobData = 0;
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var totalLength = 0;
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blobData = node6plus ? Buffer.alloc(0) : new Buffer(0);
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lob.on('data', function(chunk) {
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totalLength = totalLength + chunk.length;
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blobData = Buffer.concat([blobData, chunk], totalLength);
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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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lob.on('end', function() {
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fs.readFile( jpgFileName, function(err, originalData) {
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should.not.exist(err);
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should.strictEqual(totalLength, originalData.length);
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originalData.should.eql(blobData);
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});
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rowsFetched ++;
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fetchOneRowFromRS(resultSet, rowsFetched, rowsExpected, callback);
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});
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}
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});
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}
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function streamIntoBlob(id, cb) {
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connection.execute(
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"INSERT INTO " + tableName + " VALUES (:n, EMPTY_BLOB()) RETURNING content INTO :lobbv",
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{ n: id, lobbv: { type: oracledb.BLOB, dir: oracledb.BIND_OUT } },
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function(err, result) {
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should.not.exist(err);
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var lob = result.outBinds.lobbv[0];
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var inStream = fs.createReadStream(jpgFileName);
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inStream.pipe(lob);
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inStream.on('end', function() {
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connection.commit( function(err) {
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should.not.exist(err);
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cb(); // insertion done
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});
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});
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inStream.on('error', function(err) {
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should.not.exist(err);
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});
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}
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);
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}
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it('59.2.1 reads blob data one by one row from result set', function(done) {
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var id_1 = insertID++;
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var id_2 = insertID++;
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var id_3 = insertID++;
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async.series([
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function(callback) {
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streamIntoBlob(id_1, callback);
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},
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function(callback) {
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streamIntoBlob(id_2, callback);
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},
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function(callback) {
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streamIntoBlob(id_3, callback);
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},
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function(callback) {
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connection.execute(
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"SELECT num, content FROM " + tableName + " where num = " + id_1 + " or num = " + id_2 + " or num = " + id_3,
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[],
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{ resultSet: true },
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function(err, result) {
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should.not.exist(err);
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var actualRowsFetched = 0; // actual rows read from resultset
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var rowsExpected = 3; // expected rows read from resultSet
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fetchOneRowFromRS(result.resultSet, actualRowsFetched, rowsExpected, callback);
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}
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);
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}
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], done);
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}); // 59.2.1
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it('59.2.2 works with oracledb.maxRows > actual number of rows fetched', function(done) {
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var maxRowsBak = oracledb.maxRows;
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oracledb.maxRows = 10;
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var id_1 = insertID++;
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var id_2 = insertID++;
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var id_3 = insertID++;
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async.series([
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function(callback) {
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streamIntoBlob(id_1, callback);
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},
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function(callback) {
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streamIntoBlob(id_2, callback);
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},
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function(callback) {
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streamIntoBlob(id_3, callback);
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},
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function(callback) {
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connection.execute(
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"SELECT num, content FROM " + tableName + " where num = " + id_1 + " or num = " + id_2 + " or num = " + id_3,
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[],
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{ resultSet: true },
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function(err, result) {
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should.not.exist(err);
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var actualRowsFetched = 0; // actual rows read from resultset
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var rowsExpected = 3; // expected rows read from resultSet
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fetchOneRowFromRS(result.resultSet, actualRowsFetched, rowsExpected, callback);
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}
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);
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},
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function(callback) {
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oracledb.maxRows = maxRowsBak;
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callback();
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}
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], done);
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}); // 59.2.2
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it('59.2.3 works with oracledb.maxRows = actual number of rows fetched', function(done) {
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var maxRowsBak = oracledb.maxRows;
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oracledb.maxRows = 3;
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var id_1 = insertID++;
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var id_2 = insertID++;
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var id_3 = insertID++;
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async.series([
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function(callback) {
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streamIntoBlob(id_1, callback);
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},
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function(callback) {
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streamIntoBlob(id_2, callback);
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},
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function(callback) {
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streamIntoBlob(id_3, callback);
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},
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function(callback) {
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connection.execute(
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"SELECT num, content FROM " + tableName + " where num = " + id_1 + " or num = " + id_2 + " or num = " + id_3,
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[],
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{ resultSet: true },
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function(err, result) {
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should.not.exist(err);
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var actualRowsFetched = 0; // actual rows read from resultset
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var rowsExpected = 3; // expected rows read from resultSet
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fetchOneRowFromRS(result.resultSet, actualRowsFetched, rowsExpected, callback);
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}
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);
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},
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function(callback) {
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oracledb.maxRows = maxRowsBak;
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callback();
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}
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], done);
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}); // 59.2.3
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it('59.2.4 works with oracledb.maxRows < actual number of rows fetched', function(done) {
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var maxRowsBak = oracledb.maxRows;
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oracledb.maxRows = 1;
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var id_1 = insertID++;
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var id_2 = insertID++;
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var id_3 = insertID++;
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async.series([
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function(callback) {
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streamIntoBlob(id_1, callback);
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},
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function(callback) {
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streamIntoBlob(id_2, callback);
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},
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function(callback) {
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streamIntoBlob(id_3, callback);
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},
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function(callback) {
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connection.execute(
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"SELECT num, content FROM " + tableName + " where num = " + id_1 + " or num = " + id_2 + " or num = " + id_3,
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[],
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{ resultSet: true },
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function(err, result) {
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should.not.exist(err);
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var actualRowsFetched = 0; // actual rows read from resultset
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var rowsExpected = 3; // expected rows read from resultSet
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fetchOneRowFromRS(result.resultSet, actualRowsFetched, rowsExpected, callback);
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}
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);
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},
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function(callback) {
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oracledb.maxRows = maxRowsBak;
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callback();
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}
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], done);
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}); // 59.2.4
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}); // 59.2
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}); // 59
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