214 lines
7.4 KiB
JavaScript
214 lines
7.4 KiB
JavaScript
/* Copyright (c) 2015, 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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* 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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const oracledb = require('oracledb');
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const fs = require('fs');
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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 testsUtil = require('./testsUtil.js');
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let inFileName = 'test/clobexample.txt'; // the file with text to be inserted into the database
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let outFileName = 'test/clobstreamout.txt'; // output file with the stream out data
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describe('40. dataTypeClob.js', function() {
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let connection = null;
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let tableName = "nodb_myclobs";
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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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describe('40.1 testing CLOB data type', 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('40.1.1 stores CLOB value correctly', async function() {
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let result = await connection.execute(
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'INSERT INTO nodb_myclobs (num, content) ' +
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'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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assert.strictEqual(result.rowsAffected, 1);
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assert.strictEqual(result.outBinds.lobbv.length, 1);
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let inStream = await fs.createReadStream(inFileName);
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let lob = result.outBinds.lobbv[0];
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await new Promise((resolve, reject) => {
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inStream.on('error', reject);
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lob.on('error', reject);
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lob.on('finish', resolve);
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inStream.pipe(lob);
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});
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await connection.commit();
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result = await connection.execute(
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"SELECT content FROM nodb_myclobs WHERE num = :n",
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{ n: 1 });
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lob = result.rows[0][0];
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lob.setEncoding('utf8');
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await new Promise((resolve, reject) => {
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lob.on("error", reject);
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const outStream = fs.createWriteStream(outFileName);
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outStream.on('error', reject);
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outStream.on('finish', resolve);
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lob.pipe(outStream);
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});
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const originalData = fs.readFileSync(inFileName, { encoding: 'utf8' });
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const generatedData = fs.readFileSync(outFileName, { encoding: 'utf8' });
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assert.strictEqual(originalData, generatedData);
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result = await connection.execute(
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"SELECT content FROM nodb_myclobs WHERE num = :n",
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{ n: 1 });
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lob = result.rows[0][0];
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let clob = await lob.getData();
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const data = fs.readFileSync(inFileName, { encoding: 'utf8' });
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assert.strictEqual(data, clob);
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result = await 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.OUT_FORMAT_OBJECT });
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let row = result.rows[0];
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lob = row['CONTENT'];
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clob = await lob.getData();
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assert.strictEqual(data, clob);
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fs.unlinkSync(outFileName);
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}); // 40.1.1
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it('40.1.2 CLOB getData()', async function() {
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let result = await connection.execute(
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`INSERT INTO nodb_myclobs (num, content) ` +
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`VALUES (:n, EMPTY_CLOB()) RETURNING content INTO :lobbv`,
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{ n: 2, 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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assert.strictEqual(result.rowsAffected, 1);
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assert.strictEqual(result.outBinds.lobbv.length, 1);
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let inStream = await fs.createReadStream(inFileName);
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let lob = result.outBinds.lobbv[0];
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await new Promise((resolve, reject) => {
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inStream.on('error', reject);
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lob.on('error', reject);
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lob.on('finish', resolve);
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inStream.pipe(lob);
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});
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await connection.commit();
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result = await connection.execute(
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"SELECT content FROM nodb_myclobs WHERE num = :n",
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{ n: 2 });
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lob = result.rows[0][0];
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const data = fs.readFileSync(inFileName, { encoding: 'utf8' });
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const clob = await lob.getData();
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assert.strictEqual(data, clob);
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}); // 40.1.2
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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', async function() {
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await assist.verifyNullValues(connection, tableName);
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});
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});
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describe('40.3 Read CLOB data on meta data change', function() {
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let connection = null;
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const tableNameCLOB = 'nodb_myclobs_re_create';
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const sqlCreateQuery = `
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CREATE TABLE ${tableNameCLOB} (
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num NUMBER,
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content CLOB
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)`;
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const sqlDrop = testsUtil.sqlDropTable(tableNameCLOB);
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const sqlCreate = testsUtil.sqlCreateTable(tableNameCLOB, sqlCreateQuery);
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const insertSql = `INSERT INTO ${tableNameCLOB} (num, content) ` +
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`VALUES (:n, 'CLOB')`;
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const selectSql = `SELECT content FROM ${tableNameCLOB} WHERE num = 1`;
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before(async function() {
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oracledb.fetchAsString = [oracledb.CLOB];
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connection = await oracledb.getConnection(dbConfig);
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await connection.execute(sqlCreate);
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await connection.execute(insertSql, { n: 1 }, { autoCommit: false });
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});
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after(async function() {
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oracledb.fetchAsString = [];
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await connection.execute(sqlDrop);
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await connection.close();
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});
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it('40.3.1 Recreate table after CLOB column is read and statement is in statement cache',
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async function() {
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await connection.execute(selectSql, {}, { keepInStmtCache: true });
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await connection.execute(sqlDrop);
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await connection.execute(sqlCreate);
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await connection.execute(insertSql, { n: 1 }, { autoCommit: false });
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await connection.execute(selectSql);
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});
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});
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});
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