342 lines
11 KiB
JavaScript
342 lines
11 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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* 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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*****************************************************************************/
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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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describe('59. lobResultSet.js', function() {
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let connection = null;
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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('59.1 CLOB data', function() {
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let insertID = 1;
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const tableName = "nodb_myclobs";
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const inFileName = './test/clobexample.txt';
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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('drop table', async function() {
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await connection.execute(`DROP table ` + tableName + ` PURGE`);
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});
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async function fetchOneRowFromRS(resultSet, rowsFetched, rowsExpected) {
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const row = await resultSet.getRow();
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if (!row) {
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await resultSet.close();
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assert.strictEqual(rowsFetched, rowsExpected);
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} else {
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rowsFetched++;
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const text = await row[1].getData();
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const originalData = fs.readFileSync(inFileName, { encoding: 'utf8' });
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assert.strictEqual(text, originalData);
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await fetchOneRowFromRS(resultSet, rowsFetched, rowsExpected);
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}
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}
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async function streamIntoClob(id) {
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const result = await 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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const lob = result.outBinds.lobbv[0];
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const inStream = await fs.createReadStream(inFileName);
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await new Promise((resolve, reject) => {
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lob.on('error', reject);
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lob.on('finish', resolve);
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inStream.on('error', reject);
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inStream.pipe(lob);
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});
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await connection.commit();
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}
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it('59.1.1 reads clob data one by one row from result set', async function() {
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const id_1 = insertID++;
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const id_2 = insertID++;
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const id_3 = insertID++;
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await streamIntoClob(id_1);
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await streamIntoClob(id_2);
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await streamIntoClob(id_3);
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const result = await 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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const actualRowsFetched = 0; // actual rows read from resultset
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const rowsExpected = 3; // expected rows read from resultSet
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await fetchOneRowFromRS(result.resultSet, actualRowsFetched, rowsExpected);
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}); // 59.1.1
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it('59.1.2 works with oracledb.maxRows > actual number of rows fetched', async function() {
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const maxRowsBak = oracledb.maxRows;
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oracledb.maxRows = 10;
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const id_1 = insertID++;
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const id_2 = insertID++;
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const id_3 = insertID++;
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await streamIntoClob(id_1);
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await streamIntoClob(id_2);
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await streamIntoClob(id_3);
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const result = await 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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const actualRowsFetched = 0; // actual rows read from resultset
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const rowsExpected = 3; // expected rows read from resultSet
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await fetchOneRowFromRS(result.resultSet, actualRowsFetched, rowsExpected);
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oracledb.maxRows = maxRowsBak;
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}); // 59.1.2
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it('59.1.3 works with oracledb.maxRows = actual number of rows fetched', async function() {
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const maxRowsBak = oracledb.maxRows;
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oracledb.maxRows = 3;
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const id_1 = insertID++;
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const id_2 = insertID++;
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const id_3 = insertID++;
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await streamIntoClob(id_1);
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await streamIntoClob(id_2);
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await streamIntoClob(id_3);
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const result = await 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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const actualRowsFetched = 0; // actual rows read from resultset
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const rowsExpected = 3; // expected rows read from resultSet
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await fetchOneRowFromRS(result.resultSet, actualRowsFetched, rowsExpected);
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oracledb.maxRows = maxRowsBak;
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}); // 59.1.3
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it('59.1.4 works with oracledb.maxRows < actual number of rows fetched', async function() {
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const maxRowsBak = oracledb.maxRows;
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oracledb.maxRows = 1;
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const id_1 = insertID++;
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const id_2 = insertID++;
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const id_3 = insertID++;
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await streamIntoClob(id_1);
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await streamIntoClob(id_2);
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await streamIntoClob(id_3);
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const result = await 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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const actualRowsFetched = 0; // actual rows read from resultset
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const rowsExpected = 3; // expected rows read from resultSet
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await fetchOneRowFromRS(result.resultSet, actualRowsFetched, rowsExpected);
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oracledb.maxRows = maxRowsBak;
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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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let insertID = 1;
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const tableName = "nodb_myblobs";
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const jpgFileName = "./test/fuzzydinosaur.jpg";
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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('drop table', async function() {
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await connection.execute(`DROP table ` + tableName + ` PURGE`);
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});
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async function fetchOneRowFromRS(resultSet, rowsFetched, rowsExpected) {
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const row = await resultSet.getRow();
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if (!row) {
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await resultSet.close();
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assert.strictEqual(rowsFetched, rowsExpected);
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rowsFetched = 0;
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} else {
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rowsFetched++;
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const blobData = await row[1].getData();
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const originalData = fs.readFileSync(jpgFileName);
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assert.deepStrictEqual(originalData, blobData);
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await fetchOneRowFromRS(resultSet, rowsFetched, rowsExpected);
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}
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}
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async function streamIntoBlob(id) {
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const result = await 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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const lob = result.outBinds.lobbv[0];
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const inStream = await fs.createReadStream(jpgFileName);
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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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}
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it('59.2.1 reads blob data one by one row from result set', async function() {
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const id_1 = insertID++;
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const id_2 = insertID++;
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const id_3 = insertID++;
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await streamIntoBlob(id_1);
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await streamIntoBlob(id_2);
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await streamIntoBlob(id_3);
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const result = await 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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const actualRowsFetched = 0; // actual rows read from resultset
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const rowsExpected = 3; // expected rows read from resultSet
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await fetchOneRowFromRS(result.resultSet, actualRowsFetched, rowsExpected);
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}); // 59.2.1
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it('59.2.2 works with oracledb.maxRows > actual number of rows fetched', async function() {
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const maxRowsBak = oracledb.maxRows;
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oracledb.maxRows = 10;
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const id_1 = insertID++;
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const id_2 = insertID++;
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const id_3 = insertID++;
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await streamIntoBlob(id_1);
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await streamIntoBlob(id_2);
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await streamIntoBlob(id_3);
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const result = await 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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const actualRowsFetched = 0; // actual rows read from resultset
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const rowsExpected = 3; // expected rows read from resultSet
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await fetchOneRowFromRS(result.resultSet, actualRowsFetched, rowsExpected);
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oracledb.maxRows = maxRowsBak;
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}); // 59.2.2
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it('59.2.3 works with oracledb.maxRows = actual number of rows fetched', async function() {
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const maxRowsBak = oracledb.maxRows;
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oracledb.maxRows = 3;
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const id_1 = insertID++;
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const id_2 = insertID++;
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const id_3 = insertID++;
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await streamIntoBlob(id_1);
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await streamIntoBlob(id_2);
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await streamIntoBlob(id_3);
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const result = await 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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const actualRowsFetched = 0; // actual rows read from resultset
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const rowsExpected = 3; // expected rows read from resultSet
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await fetchOneRowFromRS(result.resultSet, actualRowsFetched, rowsExpected);
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oracledb.maxRows = maxRowsBak;
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}); // 59.2.3
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it('59.2.4 works with oracledb.maxRows < actual number of rows fetched', async function() {
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const maxRowsBak = oracledb.maxRows;
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oracledb.maxRows = 1;
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const id_1 = insertID++;
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const id_2 = insertID++;
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const id_3 = insertID++;
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await streamIntoBlob(id_1);
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await streamIntoBlob(id_2);
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await streamIntoBlob(id_3);
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const result = await 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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const actualRowsFetched = 0; // actual rows read from resultset
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const rowsExpected = 3; // expected rows read from resultSet
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await fetchOneRowFromRS(result.resultSet, actualRowsFetched, rowsExpected);
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oracledb.maxRows = maxRowsBak;
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}); // 59.2.4
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}); // 59.2
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}); // 59
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