/* Copyright (c) 2021, 2023, Oracle and/or its affiliates. */ /****************************************************************************** * * This software is dual-licensed to you under the Universal Permissive License * (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl and Apache License * 2.0 as shown at https://www.apache.org/licenses/LICENSE-2.0. You may choose * either license. * * If you elect to accept the software under the Apache License, Version 2.0, * the following applies: * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * https://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * NAME * 245. fetchLobAsStrBuf.js * * DESCRIPTION * Testing CLOB binding as String with DML and Blob binding as Buffer with DML * *****************************************************************************/ 'use strict'; const oracledb = require('oracledb'); const assert = require('assert'); const dbConfig = require('./dbconfig.js'); const random = require('./random.js'); describe('245. fetchLobAsStrBuf.js', function() { let connection = null; let insertID = 1; const tableName = "fetchLobAsStrBuf_table"; const fun_create_table = "BEGIN \n" + " DECLARE \n" + " e_table_missing EXCEPTION; \n" + " PRAGMA EXCEPTION_INIT(e_table_missing, -00942);\n" + " BEGIN \n" + " EXECUTE IMMEDIATE ('DROP TABLE " + tableName + " PURGE' ); \n" + " EXCEPTION \n" + " WHEN e_table_missing \n" + " THEN NULL; \n" + " END; \n" + " EXECUTE IMMEDIATE ( ' \n" + " CREATE TABLE " + tableName + " ( \n" + " id NUMBER, \n" + " clob_col clob, \n" + " blob_col blob \n" + " ) \n" + " '); \n" + "END; "; const drop_table = "DROP TABLE " + tableName + " PURGE"; before(async function() { connection = await oracledb.getConnection(dbConfig); }); after(async function() { await connection.close(); }); const executeSQL = async function(sql) { await connection.execute(sql); }; const insertIntoTable = async function(id, contentClob, contentBlob) { let result = null; if (contentClob == "EMPTY_CLOB" && contentBlob == "EMPTY_BLOB") { result = await connection.execute("insert INTO fetchLobAsStrBuf_table values(:id, EMPTY_CLOB(), EMPTY_BLOB())", [ id ]); assert.strictEqual(result.rowsAffected, 1); } else { const sql = "insert into fetchLobAsStrBuf_table (id, clob_col, blob_col) values(:id, :str, :buf)"; const bindings = { id: { val: id }, str: {val: contentClob, type: oracledb.STRING, dir: oracledb.BIND_IN}, buf: {val: contentBlob, type: oracledb.BUFFER, dir: oracledb.BIND_IN} }; result = await connection.execute(sql, bindings); assert.strictEqual(result.rowsAffected, 1); } }; const checkInsertResult = async function(id, contentClob, specialStr, contentBlob) { let sql = "select clob_col from fetchLobAsStrBuf_table where id = " + id; await verifyClobValueWithString(sql, contentClob, specialStr); sql = "select blob_col from fetchLobAsStrBuf_table where id = " + id; await verifyBlobValueWithBuffer(sql, contentBlob, specialStr); }; const verifyClobValueWithString = async function(selectSql, originalString, specialStr) { let result = null; result = await connection.execute(selectSql); const lob = result.rows[0][0]; if (originalString == '' || originalString == undefined || originalString == null) { assert.ifError(lob); } else { assert(lob); // set the encoding so we get a 'string' not a 'buffer' lob.setEncoding('utf8'); let clobData = ''; await new Promise((resolve, reject) => { lob.on('data', function(chunk) { clobData += chunk; }); lob.on('error', function(err) { assert.ifError(err, "lob.on 'error' event."); reject(); }); lob.on('end', function(err) { assert.ifError(err); if (originalString == "EMPTY_CLOB") { assert.strictEqual(clobData, ""); } else { const resultLength = clobData.length; const specStrLength = specialStr.length; assert.strictEqual(resultLength, originalString.length); assert.strictEqual(clobData.substring(0, specStrLength), specialStr); assert.strictEqual(clobData.substring(resultLength - specStrLength, resultLength), specialStr); } resolve(); }); }); } }; const verifyBlobValueWithBuffer = async function(selectSql, originalBuffer, specialStr) { let result = null; result = await connection.execute(selectSql); const lob = result.rows[0][0]; if (originalBuffer == '' || originalBuffer == undefined) { assert.ifError(lob); } else { assert(lob); let blobData = Buffer.alloc(0); let totalLength = 0; await new Promise((resolve, reject) => { lob.on('data', function(chunk) { totalLength = totalLength + chunk.length; blobData = Buffer.concat([blobData, chunk], totalLength); }); lob.on('error', function(err) { assert.ifError(err, "lob.on 'error' event."); reject(); }); lob.on('end', function() { if (originalBuffer == "EMPTY_BLOB") { const nullBuffer = Buffer.from('', "utf-8"); assert.deepStrictEqual(blobData, nullBuffer); } else { assert.strictEqual(totalLength, originalBuffer.length); const specStrLength = specialStr.length; assert.strictEqual(blobData.toString('utf8', 0, specStrLength), specialStr); assert.strictEqual(blobData.toString('utf8', (totalLength - specStrLength), totalLength), specialStr); assert.deepStrictEqual(blobData, originalBuffer); } resolve(); }); }); } }; describe('245.1 CLOB,BLOB Insert', function() { before(async function() { await executeSQL(fun_create_table); }); after(async function() { await executeSQL(drop_table); }); it('245.1.1 Insert and fetch CLOB,BLOB with EMPTY_CLOB and EMPTY_BLOB', async function() { const id = insertID++; const contentClob = "EMPTY_CLOB"; const contentBlob = "EMPTY_BLOB"; await insertIntoTable(id, contentClob, contentBlob); await checkInsertResult(id, contentClob, null, contentBlob); }); it('245.1.2 Insert and fetch CLOB,BLOB with String and Buffer of length 32K', async function() { const id = insertID++; const contentLength = 32768; const specialStr = "245.1.2"; const contentClob = random.getRandomString(contentLength, specialStr); const contentBlob = Buffer.from(contentClob, "utf-8"); await insertIntoTable(id, contentClob, contentBlob); await checkInsertResult(id, contentClob, specialStr, contentBlob); }); it('245.1.3 Insert and fetch CLOB,BLOB with String and Buffer of length (1MB + 1)', async function() { const id = insertID++; const contentLength = 1048577; const specialStr = "245.1.2"; const contentClob = random.getRandomString(contentLength, specialStr); const contentBlob = Buffer.from(contentClob, "utf-8"); await insertIntoTable(id, contentClob, contentBlob); await checkInsertResult(id, contentClob, specialStr, contentBlob); }); }); });