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Node JDBC Example Project

Shell 2.97% JavaScript 97.03%

node-jdbc-example's Issues

How to create multiple connections with jars of same kind(Athena) but differently configured for separate accounts?

How to purge the pool

Hi @CraZySacX (Jason),

var derby = new JDBC({
url: 'jdbc:derby://localhost:1527/testdb;create=true',
minpoolsize: 5,
maxpoolsize: 10
});

Above function mentioned in example will create 5 connection and hold in pool. How to clean/drop connections from the pool on application exit?

Thanks,
Vikram

How to run this example with my existing JDBC in Netbeans?

I have 2 problems.
First, I installed node-jdbc in my project and I couldn't make it work. Then I try this example to understand more about how node-jdbc works. But I had following error during npm install.

Second, how do you suggest I can use node-jdbc to connect to my db using NodeJS+Express?
Below is my current JDBC details in glassfish

Query bind with a lot of parameters !

Hi,

I have a problem and I wanted to know is there anyway to write a clean code for inserting data in for example 16 columns without using nested if & else?

Because if i do in a more clean way without nested if & else, it always returns randomly(sometimes it inserts sometimes returns error) an error which is like below

[Error: Error running instance method
java.sql.SQLException: Missing IN or OUT parameter at index:: 1
        at oracle.jdbc.driver.OraclePreparedStatement.processCompletedBindRow(OraclePreparedStatement.java:1937)
        at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3657)
        at oracle.jdbc.driver.T4CPreparedStatement.executeInternal(T4CPreparedStatement.java:1426)
        at oracle.jdbc.driver.OraclePreparedStatement.executeLargeUpdate(OraclePreparedStatement.java:3756)
        at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeUpdate(OraclePreparedStatementWrapper.java:1063)
        at jdk.internal.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:567)
] {
  cause: nodeJava_java_sql_SQLException {},
  level: 'error',
  [Symbol(level)]: 'error'
}

And, also the code is not clean and looks like below

statement.setInt(1, l_id, function (err) {
                                if (err) {
                                    console.log(err);
                                    res.status(500).json({ "status": 0, "statusDescription": err.toString() });
                                } else {
                                    statement.setString(2, nome, function (err) {
                                        if (err) {
                                            console.log(err);
                                            res.status(500).json({ "status": 0, "statusDescription": err.toString() });
                                        } else {
                                            statement.setString(3, cognome, function (err) {
                                                if (err) {
                                                    console.log(err);
                                                    res.status(500).json({ "status": 0, "statusDescription": err.toString() });
                                                } else {
                                                    statement.setString(4, stato, function (err) {
                                                        if (err) {
                                                            console.log(err);
                                                            res.status(500).json({ "status": 0, "statusDescription": err.toString() });
                                                        } else {
                                                            .....
}

My idea is to use another .js file to do this job for me with using switch case for binding types and using a function for executing the query. So, my queryBind.js is like below

module.exports = {
    setVal: setVal,
    executeRicetta: executeRicetta,
    executeRicettaDettagli: executeRicettaDettagli,
    executePazienti: executePazienti

}
async function setVal(statement, type, col, val) {
    switch (type) {
        case "setInt":
            statement.setInt(col, val, function (err) {
                if (err) {
                    return false;
                } else {
                    return true;
                }
            });
            break;
        case "setString":
            statement.setString(col, val, function (err) {
                if (err) {
                    return false;
                } else {
                    return true;
                }
            });
            break;
    }
}

async function executeRicetta(statement, callback, res) {
    statement.executeUpdate(function (err, count) {
        if (err) {
            console.log(err);
            res.status(500).json({ "status": 0, "statusDescription": err.message });
        } else {
            console.log('Statement executed for ricetta insert!');
            callback(null, count);
            //console.log(count)
        }
    });
}

async function executeRicettaDettagli(statement, callback, res) {
    statement.executeUpdate(function (err, count) {
        if (err) {
            console.log(err);
            res.status(500).json({ "status": 0, "statusDescription": err.message });
        } else {
            console.log('Statement executed for ricetta_dettagli insert!');
            callback(null, count);
            //console.log(count)
        }
    });
}

async function executePazienti(statement, callback, res, req) {
    statement.executeUpdate(function (err, count) {
        var statement_str = JSON.stringify(statement)
        if (err) {
            console.log(err);
            create_logFile(req, -1, JSON.stringify(statement));
            console.log("SATEMENT",statement)
            res.status(500).json({ "status": 0, "statusDescription": err.message });
        } else {
            console.log('Statement executed for pazienti insert!');
            callback(null, count);
            //console.log(count)
        }
    });
}

And, I call this file in my controller like below

oracledb.reserve(function (err, connObj) {
        //         // The connection returned from the pool is an object with two fields
        //         // {uuid: <uuid>, conn: <Connection>}
        if (err) {
            res.status(500).json({ "status": 0, "statusDescription": err.toString() });
            logger.create_logFile(req, 1, err.message);
        } else if (connObj) {
            console.log("Using connection: " + connObj.uuid);
            // Grab the Connection for use.
            var conn = connObj.conn;

 asyncjs.series([
                function (callback) {
                    conn.prepareStatement(query.importaAnagrafica, function (err, statement) {
                        if (err) {
                            callback(err);
                            console.log(err);
                            res.status(500).json({ "status": 0, "statusDescription": err.toString() });
                        } else {
                            console.log('Statement prepared for pazienti insert');
                            l_step = "[/queryBind for pazienti]"

                            queryBind.setVal(statement, "setInt", 1, pazientiJson.id);
                            console.log("BIND 1", pazientiJson.id);
                            queryBind.setVal(statement, "setString", 2, pazientiJson.nome);
                            console.log("BIND 2", pazientiJson.nome);
                            queryBind.setVal(statement, "setString", 3, pazientiJson.cognome);
                            console.log("BIND 3", pazientiJson.cognome);
                            queryBind.setVal(statement, "setString", 4, pazientiJson.stato);
                            console.log("BIND 4", pazientiJson.stato);
                            queryBind.setVal(statement, "setString", 5, pazientiJson.sesso);
                            console.log("BIND 5", pazientiJson.sesso);
                            queryBind.setVal(statement, "setString", 6, pazientiJson.codice_fiscale);
                            console.log("BIND 6", pazientiJson.codice_fiscale);
                            queryBind.setVal(statement, "setString", 7, data_di_nascita_str);
                            console.log("BIND 7", data_di_nascita_str);
                            queryBind.setVal(statement, "setString", 8, pazientiJson.indirizzo_residenza);
                            console.log("BIND 8", pazientiJson.indirizzo_residenza);
                            queryBind.setVal(statement, "setString", 9, pazientiJson.cap_residenza);
                            console.log("BIND 9", pazientiJson.cap_residenza);
                            queryBind.setVal(statement, "setString", 10, pazientiJson.indirizzo_domicilio);
                            console.log("BIND 10", pazientiJson.indirizzo_domicilio);
                            queryBind.setVal(statement, "setString", 11, pazientiJson.cap_domicilio);
                            console.log("BIND 11", pazientiJson.cap_domicilio);
                            queryBind.setVal(statement, "setString", 12, pazientiJson.id_comune_domicilio);
                            console.log("BIND 12", pazientiJson.id_comune_domicilio);
                            queryBind.setVal(statement, "setString", 13, pazientiJson.id_provincia_domicilio);
                            console.log("BIND 13", pazientiJson.id_provincia_domicilio);
                            queryBind.setVal(statement, "setString", 14, pazientiJson.id_comune_residenza);
                            console.log("BIND 14", pazientiJson.id_comune_residenza);
                            queryBind.setVal(statement, "setString", 15, pazientiJson.id_provincia_residenza);
                            console.log("BIND 15", pazientiJson.id_provincia_residenza);
                            queryBind.setVal(statement, "setString", 16, data_inserimento_str);
                            console.log("BIND 16", data_inserimento_str);
                            console.log("STATEMENT", JSON.stringify(statement))
                            queryBind.executePazienti(statement, callback, res, req);
 }
                    });
                }
            ], function (err, results) {
                // Results can also be processed here.
                if (err) {
                    console.log(err)
                    logger.create_logFile(req, -1, err.message);
                    res.status(500).json({ "status": 0, "statusDescription": err.message });
                } else {
                    console.log(results)
                    res.status(200).send({ "status": "1", "statusDescription": "Ok" });
                    l_message = "status:1, statusDescription: Ok";
                    logger.create_logFile(req, 1, l_message);
                    // Release the connection back to the pool.
                    oracledb.release(connObj, function (err) {
                        if (err) {
                            console.log(err.message);
                            res.status(500).json({ "status": 0, "statusDescription": err.message });
                        }
                    });
                }

            });

If I write above code(which is much more clean than nested if & else), I will get the error that I have mentioned at the beggining.

[Error: Error running instance method
java.sql.SQLException: Missing IN or OUT parameter at index:: 1
        at oracle.jdbc.driver.OraclePreparedStatement.processCompletedBindRow(OraclePreparedStatement.java:1937)
        at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3657)
        at oracle.jdbc.driver.T4CPreparedStatement.executeInternal(T4CPreparedStatement.java:1426)
        at oracle.jdbc.driver.OraclePreparedStatement.executeLargeUpdate(OraclePreparedStatement.java:3756)
        at oracle.jdbc.driver.OraclePreparedStatementWrapper.executeUpdate(OraclePreparedStatementWrapper.java:1063)
        at jdk.internal.reflect.GeneratedMethodAccessor6.invoke(Unknown Source)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:567)
] {
  cause: nodeJava_java_sql_SQLException {},
  level: 'error',
  [Symbol(level)]: 'error'
}

Unable to build under node 5.0

Tried to install under node 5.0, npm 3.3.6 and java open idk 1.8.0, the package wouldn't build. Here are the error messages:

CXX(target) Release/obj.target/nodejavabridge_bindings/src/java.o
In file included from ../../nan/nan_new.h:190:0,
from ../../nan/nan.h:80,
from ../src/java.h:9,
from ../src/java.cpp:1:
../../nan/nan_implementation_12_inl.h: In static member function ‘static NanIntern::FactoryBasev8::Signature::return_t NanIntern::Factoryv8::Signature::New(NanIntern::Factoryv8::Signature::FTH, int, NanIntern::Factoryv8::Signature::FTH_)’:
../../nan/nan_implementation_12_inl.h:181:76: error: no matching function for call to ‘v8::Signature::New(v8::Isolate_, NanIntern::Factoryv8::Signature::FTH&, int&, NanIntern::Factoryv8::Signature::FTH_&)’
return v8::Signature::New(v8::Isolate::GetCurrent(), receiver, argc, argv);
^
In file included from ../src/java.h:5:0,
from ../src/java.cpp:1:
/home//.node-gyp/5.0.0/include/node/v8.h:4674:27: note: candidate: static v8::Localv8::Signature v8::Signature::New(v8::Isolate*, v8::Localv8::FunctionTemplate)
static Local New(
^
/home//.node-gyp/5.0.0/include/node/v8.h:4674:27: note: candidate expects 2 arguments, 4 provided
In file included from ../src/java.h:9:0,
from ../src/java.cpp:1:
../../nan/nan.h: At global scope:
../../nan/nan.h:171:25: error: redefinition of ‘template v8::Local _NanEnsureLocal(v8::Local)’
NAN_INLINE v8::Local NanEnsureLocal(v8::Local val) {
^
../../nan/nan.h:166:25: note: ‘template v8::Local NanEnsureLocal(v8::Handle)’ previously declared here
NAN_INLINE v8::Local NanEnsureLocal(v8::Handle val) {
^
../../nan/nan.h:564:13: error: ‘node::smalloc’ has not been declared
, node::smalloc::FreeCallback callback
^
../../nan/nan.h:564:35: error: expected ‘,’ or ‘...’ before ‘callback’
, node::smalloc::FreeCallback callback
^
../../nan/nan.h: In function ‘v8::Localv8::Object NanNewBufferHandle(char, size_t, int)’:
../../nan/nan.h:568:50: error: ‘callback’ was not declared in this scope
v8::Isolate::GetCurrent(), data, length, callback, hint);
^
../../nan/nan.h:568:60: error: ‘hint’ was not declared in this scope
v8::Isolate::GetCurrent(), data, length, callback, hint);
^
../../nan/nan.h: In function ‘v8::Localv8::Object NanNewBufferHandle(const char, uint32_t)’:
../../nan/nan.h:575:67: error: no matching function for call to ‘New(v8::Isolate, const char*&, uint32_t&)’

And quite some similar messages. It mainly looks v8 interface mismatch.

How to execute Batch Select

Hi
I have 100 SELECT queries that differ by one input.
How to use the a PreparedStatement to execute batch select.

Thanks,
Sai

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