From 44b15422a0830b03c22e5e38292362f284e61867 Mon Sep 17 00:00:00 2001
From: Andrew Dunstan <andrew@dunslane.net>
Date: Thu, 21 Feb 2013 17:32:47 -0500
Subject: [PATCH 1/3] allow passing JS array as a parameter instead of an array
 literal where SQL expects an array

---
 lib/utils.js                           | 28 ++++++++++++++++++++++++++
 test/integration/client/array-tests.js | 16 +++++++++++++++
 2 files changed, 44 insertions(+)

diff --git a/lib/utils.js b/lib/utils.js
index 44d83421..b4923302 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -13,6 +13,31 @@ if(typeof events.EventEmitter.prototype.once !== 'function') {
   };
 }
 
+// convert a JS array to a postgres array literal
+// uses comma separator so won't work for types like box that use
+// a different array separator.
+function arrayString(val) {
+	var result = '{'
+	for (var i = 0 ; i < val.length; i++) {
+		if (i > 0)
+			result = result + ',';
+		if (val[i] instanceof Date) {
+			result = result + JSON.stringify(val[i]);
+		}
+		else if(typeof val[i] === 'undefined') {
+			result = result + 'NULL';
+		}
+		else if (Array.isArray(val[i])) {
+			result = result + arrayString(val[i]);
+		}
+		else
+			result = result + 
+			(val[i] === null ? 'NULL' : JSON.stringify(val[i]));
+	}
+	result = result + '}';
+	return result;
+}
+
 //converts values from javascript types
 //to their 'raw' counterparts for use as a postgres parameter
 //note: you can override this function to provide your own conversion mechanism
@@ -24,6 +49,9 @@ var prepareValue = function(val) {
   if(typeof val === 'undefined') {
     return null;
   }
+  if (Array.isArray(val)) {
+	  return arrayString(val);
+  }
   return val === null ? null : val.toString();
 };
 
diff --git a/test/integration/client/array-tests.js b/test/integration/client/array-tests.js
index dde3e5dd..074665b6 100644
--- a/test/integration/client/array-tests.js
+++ b/test/integration/client/array-tests.js
@@ -122,6 +122,22 @@ test('parsing array results', function() {
       }))
     })
     
+    test('JS array parameter', function(){
+      client.query("SELECT $1::integer[] as names", [[[1,100],[2,100],[3,100]]], assert.success(function(result) {
+        var names = result.rows[0].names;
+        assert.lengthIs(names, 3);
+        assert.equal(names[0][0], 1);
+        assert.equal(names[0][1], 100);
+
+        assert.equal(names[1][0], 2);
+        assert.equal(names[1][1], 100);
+
+        assert.equal(names[2][0], 3);
+        assert.equal(names[2][1], 100);
+        pg.end();
+      }))
+    })
+    
   }))
 })
 

From a3af2a21cf29ad13f98666209d1700ac63f088c4 Mon Sep 17 00:00:00 2001
From: Andrew Dunstan <andrew@dunslane.net>
Date: Thu, 21 Feb 2013 17:45:46 -0500
Subject: [PATCH 2/3] a visit from the jshint police

---
 lib/utils.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/utils.js b/lib/utils.js
index b4923302..0d0be9d8 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -17,7 +17,7 @@ if(typeof events.EventEmitter.prototype.once !== 'function') {
 // uses comma separator so won't work for types like box that use
 // a different array separator.
 function arrayString(val) {
-	var result = '{'
+	var result = '{';
 	for (var i = 0 ; i < val.length; i++) {
 		if (i > 0)
 			result = result + ',';
@@ -31,7 +31,7 @@ function arrayString(val) {
 			result = result + arrayString(val[i]);
 		}
 		else
-			result = result + 
+			result = result +
 			(val[i] === null ? 'NULL' : JSON.stringify(val[i]));
 	}
 	result = result + '}';
@@ -50,7 +50,7 @@ var prepareValue = function(val) {
     return null;
   }
   if (Array.isArray(val)) {
-	  return arrayString(val);
+    return arrayString(val);
   }
   return val === null ? null : val.toString();
 };

From c5b88dbff29e1cb5f6ab7fa520ccd9e97742182b Mon Sep 17 00:00:00 2001
From: Andrew Dunstan <andrew@dunslane.net>
Date: Fri, 22 Feb 2013 09:37:29 -0500
Subject: [PATCH 3/3] make indentation and blocking style consistent.

---
 lib/utils.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/lib/utils.js b/lib/utils.js
index 0d0be9d8..273decb8 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -19,8 +19,9 @@ if(typeof events.EventEmitter.prototype.once !== 'function') {
 function arrayString(val) {
 	var result = '{';
 	for (var i = 0 ; i < val.length; i++) {
-		if (i > 0)
+		if (i > 0) {
 			result = result + ',';
+		}
 		if (val[i] instanceof Date) {
 			result = result + JSON.stringify(val[i]);
 		}
@@ -31,8 +32,10 @@ function arrayString(val) {
 			result = result + arrayString(val[i]);
 		}
 		else
+		{
 			result = result +
-			(val[i] === null ? 'NULL' : JSON.stringify(val[i]));
+				(val[i] === null ? 'NULL' : JSON.stringify(val[i]));
+		}
 	}
 	result = result + '}';
 	return result;