node-firebird2
Advanced tools
Pure JavaScript and Asynchronous Firebird client for Node.js. Firebird forum on Google Groups.
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This lib exposes a promise API around the implementation of sdnetwork (https://www.npmjs.com/package/node-firebird-dev)
import {promises: fb} from 'node-firebird2'
await fb.attach(config)
await fb.query(query)
const tx = await fb.transaction(ISOLATION_XXXX)
const rows = await tx.query('SELECT 1 1 FROM RDB$DATABASE');
console.log(rows) // []
await tx.restart('auto') // restart the transaction using the same connection and isolation strategy
await tx.restart(SIOLATION_XXX) // restarts the transaction using a different strategy
const query = 'INSERT INTO CONFIGURATION (CONF_ID, CONF_CLE, CONF_VALEUR, CONF_INTERNE, CONF_CENTRE) ' +
' VALUES (NEXT VALUE FOR IDGENERIQUE, \'TEST_\' || CURRENT_TIMESTAMP, \'-1\', 0, null) RETURNING CONF_ID';
const res = await tx.query(query);
console.log(res); // {CONF_ID: 127312312 };
const rows = await tx.query('SELECT 1 1 FROM RDB$DATABASE');c
console.log(rows) // []
....
Events: (requires local database)
const evtmgr = await fb.attachEvent();
evtmgr.on("post_event", function (name, count) {
console.log("Event fired: ", name, count);
});
// register events
evtmgr.registerEvent(['evt1', 'evt2'], async function (err) {
console.log('ready to receive evt1 and evt2')
})
// stop tracking a particular event
evtmgr.unregisterEvent(["evt1"], function (err) {
console.log('remove evt1, after that you only receive evt2')
})
*********************************************
node test/mr/01_02-connect_and_start_tx.js vm1
vm1 is a conf key in config.js and stands for the target execution environement.
NOTE: setup the environment variables with your own settings
Firebird database on social networks
Changelog for version v0.9.x
Changelog for version v0.2.x
database.detach() waits for last commandnpm install node-firebird2
var Firebird = require('node-firebird2');
Firebird.escape(value) -> return {String} - prevent for SQL InjectionsFirebird.attach(options, function(err, db)) attach a databaseFirebird.create(options, function(err, db)) create a databaseFirebird.attachOrCreate(options, function(err, db)) attach or create databaseFirebird.pool(max, options, function(err, db)) -> return {Object} create a connection pooling## Connection types
var options = {};
options.host = '127.0.0.1';
options.port = 3050;
options.database = 'database.fdb';
options.user = 'SYSDBA';
options.password = 'masterkey';
options.lowercase_keys = false; // set to true to lowercase keys
options.role = null; // default
options.pageSize = 4096; // default when creating database
Firebird.attach(options, function(err, db) {
if (err)
throw err;
// db = DATABASE
db.query('SELECT * FROM TABLE', function(err, result) {
// IMPORTANT: close the connection
db.detach();
});
});
// 5 = the number is count of opened sockets
var pool = Firebird.pool(5, options);
// Get a free pool
pool.get(function(err, db) {
if (err)
throw err;
// db = DATABASE
db.query('SELECT * FROM TABLE', function(err, result) {
// IMPORTANT: release the pool connection
db.detach();
});
});
// Destroy pool
pool.destroy();
db.query(query, [params], function(err, result)) - classic query, returns Array of Objectdb.execute(query, [params], function(err, result)) - classic query, returns Array of Arraydb.sequentially(query, [params], function(row, index, next), function(err), asArray) - sequentially querydb.detach(function(err)) detach a databasedb.transaction(isolation, function(err, transaction)) create transactiontransaction.query(query, [params], function(err, result)) - classic query, returns Array of Objecttransaction.execute(query, [params], function(err, result)) - classic query, returns Array of Arraytransaction.sequentially(query, [params], function(row, index, next), function(err), asArray) - sequentially querytransaction.commit(function(err)) commit current transactiontransaction.rollback(function(err)) rollback current transaction### Parameters
Firebird.attach(options, function(err, db) {
if (err)
throw err;
// db = DATABASE
db.query('INSERT INTO USERS (ID, ALIAS, CREATED) VALUES(?, ?, ?) RETURNING ID', [1, 'Pe\'ter', new Date()] function(err, result) {
console.log(result[0].id);
db.query('SELECT * FROM USERS WHERE Alias=?', ['Peter'], function(err, result) {
console.log(result);
db.detach();
});
});
});
Firebird.attach(options, function(err, db) {
if (err)
throw err;
// db = DATABASE
// INSERT STREAM as BLOB
db.query('INSERT INTO USERS (ID, ALIAS, FILE) VALUES(?, ?, ?)', [1, 'Peter', fs.createReadStream('/users/image.jpg')] function(err, result) {
// IMPORTANT: close the connection
db.detach();
});
});
Firebird.attach(options, function(err, db) {
if (err)
throw err;
// db = DATABASE
// INSERT BUFFER as BLOB
db.query('INSERT INTO USERS (ID, ALIAS, FILE) VALUES(?, ?, ?)', [1, 'Peter', fs.readFileSync('/users/image.jpg')] function(err, result) {
// IMPORTANT: close the connection
db.detach();
});
});
// async (only with transaction)
Firebird.attach(options, function(err, db) {
if (err)
throw err;
db.transaction(function(err, transaction) {
// db = DATABASE
db.query('SELECT ID, ALIAS, USERPICTURE FROM USER', function(err, rows) {
if (err)
throw err;
// first row
rows[0].userpicture(function(err, name, e) {
if (err)
throw err;
// +v0.2.4
// e.pipe(writeStream/Response);
// e === EventEmitter
e.on('data', function(chunk) {
// reading data
});
e.on('end', function() {
// end reading
// IMPORTANT: close the connection
db.detach();
});
});
});
});
});
// sync blob are fetched automatically
Firebird.attach(options, function(err, db) {
if (err)
throw err;
// db = DATABASE
db.query('SELECT ID, ALIAS, USERPICTURE FROM USER', function(err, rows) {
if (err)
throw err;
// first row
// userpicture is a Buffer that contain the blob data
rows[0].userpicture;
});
});
Firebird.attach(options, function(err, db) {
if (err)
throw err;
// db = DATABASE
db.sequentially('SELECT * FROM BIGTABLE', function(row, index, next) {
// EXAMPLE
stream.write(JSON.stringify(row));
next()
}, function(err) {
// END
// IMPORTANT: close the connection
db.detach();
});
});
Transaction types:
Firebird.ISOLATION_READ_UNCOMMITTEDFirebird.ISOLATION_READ_COMMITEDFirebird.ISOLATION_REPEATABLE_READFirebird.ISOLATION_SERIALIZABLEFirebird.ISOLATION_READ_COMMITED_READ_ONLYFirebird.attach(options, function(err, db) {
if (err)
throw err;
// db = DATABASE
db.transaction(Firebird.ISOLATION_READ_COMMITED, function(err, transaction) {
transaction.query('INSERT INTO users VALUE(?,?)', [1, 'Janko'], function(err, result) {
if (err) {
transaction.rollback();
return;
}
transaction.commit(function(err) {
if (err)
transaction.rollback();
else
db.detach();
});
});
});
});
Firebird.attach(options, function(err, db) {
if (err)
throw err;
db.on('row', function(row, index, isObject) {
// index === Number
// isObject === is row object or array?
});
db.on('result', function(result) {
// result === Array
});
db.on('attach', function() {
});
db.on('detach', function(isPoolConnection) {
// isPoolConnection == Boolean
});
db.on('reconnect', function() {
});
db.on('error', function(err) {
});
db.on('transaction', function(isolation: Isolation) {
// console.log(isolation) ---> Isolation { mode: 'write', ..... }
});
db.on('commit', function() {
});
db.on('rollback', function() {
});
db.detach();
});
var sql1 = 'SELECT * FROM TBL_USER WHERE ID>' + Firebird.escape(1);
var sql2 = 'SELECT * FROM TBL_USER WHERE NAME=' + Firebird.escape('Pe\'er');
var sql3 = 'SELECT * FROM TBL_USER WHERE CREATED<=' + Firebird.escape(new Date());
var sql4 = 'SELECT * FROM TBL_USER WHERE NEWSLETTER=' + Firebird.escape(true);
// or db.escape()
console.log(sql1);
console.log(sql2);
console.log(sql3);
console.log(sql4);
// each row : fctname : [params], typeofreturn
var fbsvc = {
"backup" : { [ "options"], "stream" },
"nbackup" : { [ "options"], "stream" },
"restore" : { [ "options"], "stream" },
"nrestore" : { [ "options"], "stream" },
"setDialect": { [ "database","dialect"], "stream" },
"setSweepinterval": { [ "database","sweepinterval"], "stream" },
"setCachebuffer" : { [ "database","nbpagebuffers"], "stream" },
"BringOnline" : { [ "database"], "stream" },
"Shutdown" : { [ "database","shutdown","shutdowndelay","shutdownmode"], "stream" },
"setShadow" : { [ "database","activateshadow"], "stream" },
"setForcewrite" : { [ "database","forcewrite"], "stream" },
"setReservespace" : { [ "database","reservespace"], "stream" },
"setReadonlyMode" : { [ "database"], "stream" },
"setReadwriteMode" : { [ "database"], "stream" },
"validate" : { [ "options"], "stream" },
"commit" : { [ "database", "transactid"], "stream" },
"rollback" : { [ "database", "transactid"], "stream" },
"recover" : { [ "database", "transactid"], "stream" },
"getStats" : { [ "options"], "stream" },
"getLog" : { [ "options"], "stream" },
"getUsers" : { [ "username"], "object" },
"addUser" : { [ "username", "password", "options"], "stream" },
"editUser" : { [ "username", "options"], "stream" },
"removeUser" : { [ "username","rolename"], "stream" },
"getFbserverInfos" : { [ "options", "options"], "object" },
"startTrace" : { [ "options"], "stream" },
"suspendTrace" : { [ "options"], "stream" },
"resumeTrace" : { [ "options"], "stream" },
"stopTrace" : { [ "options"], "stream" },
"getTraceList" : { [ "options"], "stream" },
"hasActionRunning" : { [ "options"], "object"}
}
Firebird.attach(options, function(err, svc) {
if (err)
return;
svc.backup(
{
database:'/DB/MYDB.FDB',
files: [
{
filename:'/DB/MYDB.FBK',
sizefile:'0'
}
]
},
function(err, data) {
console.log(data);
});
fb.attach(_connection, function(err, svc) {
if (err)
return;
// all function that return a stream take two optional parameter
// optread => byline or buffer byline use isc_info_svc_line and buffer use isc_info_svc_to_eof
// buffersize => is the buffer for service manager it can't exceed 8ko (i'm not sure)
svc.getLog({optread:'buffer', buffersize:2048}, function (err, data) {
// data is a readablestream that contain the firebird.log file
console.log(err);
data.on('data', function (data) {
console.log(data.toString());
});
data.on('end', function() {
console.log('finish');
});
});
// an other exemple to use function that return object
svc.getFbserverInfos(
{
"dbinfo" : true,
"fbconfig" : true,
"svcversion" : true,
"fbversion" : true,
"fbimplementation" : true,
"fbcapatibilities" : true,
"pathsecuritydb" : true,
"fbenv" : true,
"fbenvlock" : true,
"fbenvmsg" : true
}, {}, function (err, data) {
console.log(err);
console.log(data);
});
});
node-firebird doesn't let you chose the charset connection, it will always use UTF8. Node is unicode, no matter if your database is using another charset to store string or blob, Firebird will transliterate automatically.
This is why you should use Firebird 2.5 server at least.
Firebird new wire protocol is not supported yet so for Firebird 3.0 you need to add the following in firebird.conf
AuthServer = Legacy_Auth
WireCrypt = Disabled
## Contributors
FAQs
Pure JavaScript and Asynchronous Firebird client for Node.js.
We found that node-firebird2 demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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