187 lines
6.0 KiB
JavaScript
187 lines
6.0 KiB
JavaScript
/* Copyright (c) 2017, 2023, Oracle and/or its affiliates. */
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/******************************************************************************
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*
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* This software is dual-licensed to you under the Universal Permissive License
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* (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl and Apache License
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* 2.0 as shown at https://www.apache.org/licenses/LICENSE-2.0. You may choose
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* either license.
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*
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* If you elect to accept the software under the Apache License, Version 2.0,
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* the following applies:
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* NAME
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* 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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const oracledb = require('oracledb');
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const assert = require('assert');
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const dbConfig = require('./dbconfig.js');
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const assist = require('./dataTypeAssist.js');
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const random = require('./random.js');
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describe('124. nclobDMLBindAsString.js', function() {
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let connection = null;
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const tableName = "nodb_nclob";
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let insertID = 0;
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before('get one connection', async function() {
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connection = await oracledb.getConnection(dbConfig);
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});
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after('release connection', async function() {
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await connection.close();
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});
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beforeEach(function() {
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insertID++;
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});
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describe('124.1 DML binding', function() {
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before('create table', async function() {
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await connection.execute(assist.sqlCreateTable(tableName));
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});
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after(async function() {
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await connection.execute("DROP table " + tableName + " PURGE");
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});
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it('124.1.1 bind in via INSERT', async function() {
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const insertLength = 100;
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const insertStr = random.getRandomLengthString(insertLength);
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await bindIn(tableName, insertStr);
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await streamLob(tableName, insertStr);
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});
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it('124.1.2 bind out via RETURNING INTO', async function() {
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const insertLength = 3000;
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const insertStr = random.getRandomLengthString(insertLength);
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await insertData(tableName, insertStr);
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await bindOut(tableName, insertStr);
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});
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it('124.1.3 bind in via UPDATE', async function() {
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const insertLength = 100;
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const insertStr = random.getRandomLengthString(insertLength);
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const updateStr = random.getRandomLengthString(200);
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await insertData(tableName, insertStr);
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await bind_update(tableName, updateStr);
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await streamLob(tableName, updateStr);
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});
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it('124.1.3 bind in via WHERE', async function() {
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const insertLength = 500;
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const insertStr = random.getRandomLengthString(insertLength);
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await insertData(tableName, insertStr);
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await bind_where(tableName, insertStr);
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});
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});
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const insertData = async function(tableName, insertStr) {
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const sql = "INSERT INTO " + tableName + "(num, content) VALUES(" + insertID + ", TO_NCLOB('" + insertStr + "'))";
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await connection.execute(sql);
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};
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const bindIn = async function(tableName, insertStr) {
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const sql = "INSERT INTO " + tableName + "(num, content) VALUES(:i, TO_NCLOB(:c))";
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const 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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await connection.execute(sql, bindVar);
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};
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const bindOut = async function(tableName, insertStr) {
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insertID++;
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let result = null;
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result = await 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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const resultStr = result.outBinds.lobbv[0];
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assert.strictEqual(resultStr.length, insertStr.length);
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assert.strictEqual(resultStr, insertStr);
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};
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const bind_update = async function(tableName, insertStr) {
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const sql = "update " + tableName + " set content = TO_NCLOB(:c) where num = :i";
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const 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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await connection.execute(sql, bindVar);
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};
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const bind_where = async function(tableName, insertStr) {
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const sql = "select * from " + tableName + " where dbms_lob.compare(content, TO_NCLOB(:c)) = 0";
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const bindVar = {
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c: { val: insertStr, type: oracledb.STRING, dir: oracledb.BIND_IN}
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};
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let result = null;
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result = await 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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assert.strictEqual(result.rows[0][0], insertID);
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assert.strictEqual(result.rows[0][1], insertStr);
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};
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const streamLob = async function(tableName, originalStr) {
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let result = null;
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result = await connection.execute(
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"SELECT TO_CLOB(content) FROM " + tableName + " where num = " + insertID);
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await new Promise((resolve, reject) => {
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let clob = '';
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const lob = result.rows[0][0];
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assert(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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assert.strictEqual(clob.length, originalStr.length);
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assert.strictEqual(clob, originalStr);
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resolve();
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});
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lob.on('error', reject);
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});
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};
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});
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