246 lines
6.9 KiB
JavaScript
246 lines
6.9 KiB
JavaScript
/* Copyright (c) 2017, 2021, 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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* 124. nclobDMLBindAsString.js
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*
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* DESCRIPTION
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* Testing NCLOB binding as STRING in DML.
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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 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 random = require('./random.js');
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describe('124. nclobDMLBindAsString.js', function() {
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var connection = null;
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var tableName = "nodb_nclob";
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var insertID = 0;
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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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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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beforeEach(function(done) {
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insertID++;
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done();
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});
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describe('124.1 DML binding', 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('124.1.1 bind in via INSERT', function(done) {
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var insertLength = 100;
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var insertStr = random.getRandomLengthString(insertLength);
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async.series([
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function(cb) {
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bindIn(tableName, insertStr, cb);
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},
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function(cb) {
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streamLob(tableName, insertStr, cb);
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}
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], done);
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});
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it('124.1.2 bind out via RETURNING INTO', function(done) {
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var insertLength = 3000;
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var insertStr = random.getRandomLengthString(insertLength);
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async.series([
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function(cb) {
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insertData(tableName, insertStr, cb);
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},
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function(cb) {
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bindOut(tableName, insertStr, cb);
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}
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], done);
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});
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it('124.1.3 bind in via UPDATE', function(done) {
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var insertLength = 100;
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var insertStr = random.getRandomLengthString(insertLength);
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var updateStr = random.getRandomLengthString(200);
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async.series([
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function(cb) {
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insertData(tableName, insertStr, cb);
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},
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function(cb) {
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bind_update(tableName, updateStr, cb);
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},
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function(cb) {
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streamLob(tableName, updateStr, cb);
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}
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], done);
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});
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it('124.1.3 bind in via WHERE', function(done) {
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var insertLength = 500;
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var insertStr = random.getRandomLengthString(insertLength);
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async.series([
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function(cb) {
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insertData(tableName, insertStr, cb);
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},
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function(cb) {
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bind_where(tableName, insertStr, cb);
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}
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], done);
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});
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});
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var insertData = function(tableName, insertStr, callback) {
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var sql = "INSERT INTO " + tableName + "(num, content) VALUES(" + insertID + ", TO_NCLOB('" + insertStr + "'))";
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connection.execute(
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sql,
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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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var bindIn = function(tableName, insertStr, callback) {
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var sql = "INSERT INTO " + tableName + "(num, content) VALUES(:i, TO_NCLOB(:c))";
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var bindVar = {
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i: { val: insertID, type: oracledb.NUMBER, dir: oracledb.BIND_IN},
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c: { val: insertStr, type: oracledb.STRING, dir: oracledb.BIND_IN},
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};
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connection.execute(
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sql,
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bindVar,
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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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var bindOut = function(tableName, insertStr, callback) {
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insertID++;
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connection.execute(
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"INSERT INTO " + tableName + " (num, content) VALUES (:i, TO_NCLOB(:c)) RETURNING content INTO :lobbv",
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{
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i: { val: insertID, type: oracledb.NUMBER, dir: oracledb.BIND_IN},
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c: { val: insertStr, type: oracledb.STRING, dir: oracledb.BIND_IN },
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lobbv: { type: oracledb.STRING, dir: oracledb.BIND_OUT, maxSize: insertStr.length }
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},
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function(err, result) {
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should.not.exist(err);
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var resultStr = result.outBinds.lobbv[0];
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should.strictEqual(resultStr.length, insertStr.length);
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should.strictEqual(resultStr, insertStr);
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callback();
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});
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};
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var bind_update = function(tableName, insertStr, callback) {
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var sql = "update " + tableName + " set content = TO_NCLOB(:c) where num = :i";
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var bindVar = {
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i: { val: insertID, type: oracledb.NUMBER, dir: oracledb.BIND_IN},
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c: { val: insertStr, type: oracledb.STRING, dir: oracledb.BIND_IN}
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};
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connection.execute(
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sql,
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bindVar,
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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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var bind_where = function(tableName, insertStr, callback) {
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var sql = "select * from " + tableName + " where dbms_lob.compare(content, TO_NCLOB(:c)) = 0";
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var bindVar = {
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c: { val: insertStr, type: oracledb.STRING, dir: oracledb.BIND_IN}
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};
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connection.execute(
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sql,
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bindVar,
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{
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fetchInfo : { CONTENT : { type : oracledb.STRING } }
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},
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function(err, result) {
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should.not.exist(err);
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should.strictEqual(result.rows[0][0], insertID);
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should.strictEqual(result.rows[0][1], insertStr);
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callback();
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}
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);
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};
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var streamLob = function(tableName, originalStr, callback) {
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connection.execute(
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"SELECT TO_CLOB(content) FROM " + tableName + " where num = " + insertID,
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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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clob += chunk;
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});
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lob.on('end', function() {
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should.strictEqual(clob.length, originalStr.length);
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should.strictEqual(clob, originalStr);
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callback();
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});
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lob.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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