From 6049ef11fbb13b28faf4699baaa08f0e5065ff04 Mon Sep 17 00:00:00 2001
From: Lucas Dohmen <lucas@arangodb.com>
Date: Thu, 31 Oct 2013 15:12:06 +0100
Subject: [PATCH] Graph: Replace a given edge by ID

---
 js/client/modules/org/arangodb/graph.js        |  8 ++++++++
 js/common/modules/org/arangodb/graph-common.js | 12 ++++++++++++
 js/common/tests/shell-graph.js                 | 16 ++++++++++++++++
 js/server/modules/org/arangodb/graph.js        |  8 ++++++++
 4 files changed, 44 insertions(+)

diff --git a/js/client/modules/org/arangodb/graph.js b/js/client/modules/org/arangodb/graph.js
index 6465c6c175..8d0e94d30e 100644
--- a/js/client/modules/org/arangodb/graph.js
+++ b/js/client/modules/org/arangodb/graph.js
@@ -287,6 +287,14 @@ Graph.prototype._replaceVertex = function (id, data) {
   GraphAPI.putVertex(this._properties._key, id, data);
 };
 
+////////////////////////////////////////////////////////////////////////////////
+/// @brief replace an edge in the graph
+////////////////////////////////////////////////////////////////////////////////
+
+Graph.prototype._replaceEdge = function (id, data) {
+  GraphAPI.putEdge(this._properties._key, id, data);
+};
+
 ////////////////////////////////////////////////////////////////////////////////
 /// @brief returns a vertex given its id
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/js/common/modules/org/arangodb/graph-common.js b/js/common/modules/org/arangodb/graph-common.js
index a5640bb029..0c9810b397 100644
--- a/js/common/modules/org/arangodb/graph-common.js
+++ b/js/common/modules/org/arangodb/graph-common.js
@@ -793,6 +793,18 @@ Graph.prototype.replaceVertex = function (id, data) {
   this._replaceVertex(id, data);
 };
 
+////////////////////////////////////////////////////////////////////////////////
+/// @brief replaces an existing edge by ID
+///
+/// @FUN{@FA{graph}.replaceEdge(@FA{id}, @FA{data})}
+///
+/// Replaces an existing edge by ID
+////////////////////////////////////////////////////////////////////////////////
+
+Graph.prototype.replaceEdge = function (id, data) {
+  this._replaceEdge(id, data);
+};
+
 ////////////////////////////////////////////////////////////////////////////////
 /// @brief returns the number of vertices
 ///
diff --git a/js/common/tests/shell-graph.js b/js/common/tests/shell-graph.js
index 33ab47227f..7d0973cc6a 100644
--- a/js/common/tests/shell-graph.js
+++ b/js/common/tests/shell-graph.js
@@ -239,6 +239,22 @@ function GraphBasicsSuite() {
       assertEqual(edge._properties._key, edge.getId());
     },
 
+    testReplaceEdge : function () {
+      var v1,
+        v2,
+        edge;
+
+      v1 = graph.addVertex("vertex1");
+      v2 = graph.addVertex("vertex2");
+
+      graph.addEdge(v1, v2, "my-edge");
+
+      graph.replaceEdge("my-edge", { weight: 2 });
+      edge = graph.getEdge("my-edge");
+
+      assertEqual(2, edge.getProperty("weight"));
+    },
+
 ////////////////////////////////////////////////////////////////////////////////
 /// @brief change a property
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/js/server/modules/org/arangodb/graph.js b/js/server/modules/org/arangodb/graph.js
index 1957a75b64..49884cf767 100644
--- a/js/server/modules/org/arangodb/graph.js
+++ b/js/server/modules/org/arangodb/graph.js
@@ -602,6 +602,14 @@ Graph.prototype._replaceVertex = function (vertex_id, data) {
   var result = this._vertices.replace(vertex_id, data);
 };
 
+////////////////////////////////////////////////////////////////////////////////
+/// @brief replaces an edge in the graph
+////////////////////////////////////////////////////////////////////////////////
+
+Graph.prototype._replaceEdge = function (edge_id, data) {
+  var result = this._edges.replace(edge_id, data);
+};
+
 ////////////////////////////////////////////////////////////////////////////////
 /// @brief returns a vertex given its id
 ///