overloaded "simple" query api to provide callback enabled prepared statement

lib/client.js

@@ -98,10 +98,21 @@ p.pulseQueryQueue = function() {
   }
 };
 
-p.query = function(config, callback) {
+p.query = function(config, values, callback) {
   //can take in strings or config objects
   config = (config.text || config.name) ? config : { text: config };
-  config.callback = config.callback || callback;
+  if(values) {
+    if(typeof values === 'function') {
+      callback = values;
+    }
+    else {
+      config.values = values;
+    }
+  }
+  if(callback) {
+    config.callback = callback;
+  }
+
   var query = new Query(config);
   this.queryQueue.push(query);
   this.pulseQueryQueue();

lib/query.js

@@ -50,7 +50,7 @@ p.submit = function(connection) {
       result[names[i]] = rawValue === null ? null : converters[i](rawValue);
     }
     self.emit('row', result);
-    
+
     //if no reciever, buffer rows
     if(self.callback) {
       rows.push(result);

test/integration/client/api-tests.js

@@ -2,33 +2,38 @@ var helper = require(__dirname + '/../test-helper');
 var pg = require(__dirname + '/../../../lib');
 
 var connected = false
-var called = false
+var simpleCalled = false
+var preparedCalled = false
+
 pg.connect(helper.args, function(err, client) {
   connected = true
   test('error is null', function() {
     assert.equal(err, null)
   })
 
-  test('query execution', function() {
+  test('simple query execution', function() {
     client.query('CREATE TEMP TABLE band(name varchar(100))')
     client.query("INSERT INTO band (name) VALUES ('dead black hearts')")
     client.query("SELECT * FROM band WHERE name = 'dead black hearts'", function(err, result) {
-      called = true;
+      simpleCalled = true
       assert.equal(result.rows.pop().name, 'dead black hearts')
     })
   })
 
+  test('prepared statement execution', function() {
+    client.query('SELECT * FROM band WHERE name = $1', ['dead black hearts'], function(err, result) {
+      preparedCalled = true
+      assert.equal(result.rows.pop().name, 'dead black hearts')
+    })
+  })
 })
 
 process.on('exit', function() {
   assert.ok(connected, 'never connected')
-  assert.ok(called, 'query result callback was never called')
+  assert.ok(simpleCalled, 'query result callback was never called')
+  assert.ok(preparedCalled, 'prepared callback was never called')
 })
 
-
-
-
-
 test('raises error if cannot connect', function() {
   pg.connect({database:'asdlfkajsdf there is no way this is a real database, right?!'}, function(err, client) {
     assert.ok(err, 'error was null')