Get All/Resolve All Feature for Retrieve Action, issue #76 (#78)

Get All/Resolve All Feature for Retrieve Action

added "get all" feature to retrieve action if payload has no id property
use getAll instead of resolveAll for retrieval of participants
added node info text for getAll/resolveAll feature

Signed-off-by: marcus <wittigmarcus@gmail.com>

packages/node-red-contrib-composer/README.md

@@ -1,12 +1,12 @@
-#node-red-contrib-hyperledger-composer
+# node-red-contrib-hyperledger-composer
 A set of nodes for interacting with Hyperledger Composer
 
 *Note : These node will only work if you are running node red locally. It won't work if you are using node red on bluemix.*
 
-##Hyperledger-Composer-Out
+## Hyperledger-Composer-Out
 A node red output node that allows you to create, update or delete assets or participants and submit transactions.
 
-###Example Usage
+### Example Usage
 This example uses the Car Auction Sample Network that can be obtained from [here](https://github.com/hyperledger/composer-sample-networks/tree/master/packages/carauction-network)
 
 The Car Auction Sample, simulates a car auction. It has two kinds of participant. An Auctioneer, who is responsible for conducting the auction, and a member who can bid on cars in the auction.
@@ -26,10 +26,10 @@ In this example we will create a participant, the participant .
 
 5. Using the playground or command line you should now be able to see the participant that has been created.
 
-##Hyperledger-Composer-Mid
+## Hyperledger-Composer-Mid
 A node red mid flow node that allows you to create, retrieve, update, or delete assets and participants from a registry.
 
-###Example Usage
+### Example Usage
 This example follows on from the above example. It will retrieve the participant that was created above.
 
  1. Create a `hyperledger-composer-mid node`
@@ -44,7 +44,7 @@ This example follows on from the above example. It will retrieve the participant
 
 4. Use a `debug node` to capture the output from the `hyperledger-composer-mid node`
 
-##Hyperledger-Composer-In
+## Hyperledger-Composer-In
 A node red input node that subscribes to events from a blockchain
 
 1. On `Composer Card` click the pencil top add a new config node. Specify the `card name`, or use the drop down to use one previous created.

packages/node-red-contrib-composer/nodes/hyperledger-composer.html

@@ -127,6 +127,9 @@
 <p>Hyperledger-Composer node. Gets an asset, or participant using the <code>msg.payload</code>.</p>
     <p>The name of the resource or transaction should be set in <code>msg.payload.$class</code></p>
     <p>The id of the resource should be set in <code>msg.payload.id</code></p>
+    <p>If <code>msg.payload.id</code> is not set and the action type is set to <code>retrieve</code>,
+all resources of the given type <code>msg.payload.$class</code> will be retrieved. Additionally,
+all resources will be resolved if the <code>retrieve</code> checkbox is checked.</p>
 </script>
 
 <script type="text/javascript">

packages/node-red-contrib-composer/nodes/hyperledger-composer.js

@@ -192,9 +192,19 @@ module.exports = function (RED) {
                             node.log('got asset registry');
 
                             if (resolve) {
-                                return assetRegistry.resolve(id);
+                                if (id == null) {
+                                  return assetRegistry.resolveAll();
+                                }
+                                else {
+                                  return assetRegistry.resolve(id);
+                                }
                             } else {
+                              if (id == null) {
+                                return assetRegistry.getAll();
+                              }
+                              else {
                                 return assetRegistry.get(id);
+                              }
                             }
                         })
                         .then((result) => {
@@ -213,7 +223,21 @@ module.exports = function (RED) {
                     return businessNetworkConnection.getParticipantRegistry(modelName)
                         .then((participantRegistry) => {
                             node.log('got participant registry');
-                            return participantRegistry.get(id);
+                            if (resolve) {
+                              if (id == null) {
+                                return participantRegistry.resolveAll();
+                              }
+                              else {
+                                return participantRegistry.resolve(id);
+                              }
+                            } else {
+                              if (id == null) {
+                                return participantRegistry.getAll();
+                              }
+                              else {
+                                return participantRegistry.get(id);
+                              }
+                            }
                         })
                         .then((result) => {
                             node.log('got participant');
@@ -379,12 +403,6 @@ module.exports = function (RED) {
             if (!payLoad.$class) {
                 throw new Error('$class not set in payload');
             }
-
-            if (type === RETRIEVE) {
-                if (!payLoad.id) {
-                    throw new Error('id not set in payload');
-                }
-            }
         });
     }