93 lines
2.4 KiB
JavaScript
93 lines
2.4 KiB
JavaScript
/* Copyright (c) 2016, 2019, 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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* NAME
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* refcursortoquerystream.js
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*
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* DESCRIPTION
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* Converts a refcursor (returned from execute) to a query stream for an
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* alternative means of processing instead of using resultSet.getRows().
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*
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* Scripts to create the HR schema can be found at:
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* https://github.com/oracle/db-sample-schemas
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*
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* This example requires node-oracledb 1.9 or later.
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*
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*****************************************************************************/
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var oracledb = require('oracledb');
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var dbConfig = require('./dbconfig.js');
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oracledb.getConnection(
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{
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user : dbConfig.user,
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password : dbConfig.password,
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connectString : dbConfig.connectString
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},
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function(err, connection) {
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if (err) {
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console.error(err.message);
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return;
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}
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connection.execute(
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`BEGIN
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OPEN :cursor FOR SELECT department_id, department_name FROM departments;
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END;`,
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{
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cursor: { type: oracledb.CURSOR, dir : oracledb.BIND_OUT }
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},
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function(err, result) {
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var cursor;
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var queryStream;
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if (err) {
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console.error(err.message);
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doRelease(connection);
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return;
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}
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cursor = result.outBinds.cursor;
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queryStream = cursor.toQueryStream();
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queryStream.on('data', function (row) {
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console.log(row);
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});
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queryStream.on('error', function (err) {
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console.error(err.message);
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doRelease(connection);
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});
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queryStream.on('close', function () {
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doRelease(connection);
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});
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}
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);
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}
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);
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function doRelease(connection) {
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connection.close(
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function(err) {
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if (err) {
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console.error(err.message);
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}
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}
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);
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}
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