anselmo / node-jdbc

JDBC Wrapper for node.js

node-jdbc

JDBC Wrapper for node.js

Latest Version

0.0.8

Please visit node-jdbc for information on installing with npm.

Status

Initialize

var jdbc = new ( require('jdbc') );

var config = {
  libpath: __dirname + 'path/to/jdbc.jar',
  drivername: 'com.java.driverclass',
  url: 'url/to/database'
};

jdbc.initialize(config, function(err, res) {
  if (err) {
    console.log(err);
  }
});

Open Connection, Execute Queries, Close

var genericQueryHandler = function(err, results) {
  if (err) {
    console.log(err);
  } else if (results) {
    console.log(results);
  }
  
  jdbc.close(function(err) {
    if(err) {
      console.log(err);
    } else {
      console.log("Connection closed successfully!");
    }
  });

};

jdbc.open(function(err, conn) {
  if (conn) {
    // SELECT statements are called with executeQuery
    jdbc.executeQuery("SELECT * FROM table", genericQueryHandler);

    // Table modifying statements (UPDATE/INSERT/DELETE/etc) are called with executeUpdate
    jdbc.executeUpdate("UPDATE table SET column = value", genericQueryHandler);

    // Use non-generic callbacks to handle queries individually and/or to nest queries
    jdbc.executeUpdate("INSERT INTO table VALUES (value)", function(err, results) {
      
      if(results > some_arbitrary_value) {
        jdbc.executeQuery("SELECT * FROM table where column = value", genericQueryHandler);
      }
    
    });
  }
});

API

initialize(config, callback)

• see above example for config object
• callback(error)

open(callback)

• opens a new connection
• callback(error)

close(callback)

• closes any existing connection
• callback(error)

executeQuery(sql, callback)

• SELECT commands.
• callback(error, rset)

executeUpdate(sql, callback)

• table modifying commands (INSERT, UPDATE, DELETE, etc).
• callback(error, num_rows)
• where @num_rows is the number of rows modified