From 02d60454f5edf1a13c393a1dfd5ba0553c0a3268 Mon Sep 17 00:00:00 2001
From: kaloyane <kaloyane>
Date: Wed, 9 Nov 2011 21:39:06 +0000
Subject: [PATCH] add: utility that caches JSON responses and allows offline
development (without a running backend) of new-style webapps
SVN: 23623
---
.../html/downloader/openbis-request-cache.js | 47 +++++++++++++++++++
1 file changed, 47 insertions(+)
create mode 100644 deep_sequencing_unit/source/html/downloader/openbis-request-cache.js
diff --git a/deep_sequencing_unit/source/html/downloader/openbis-request-cache.js b/deep_sequencing_unit/source/html/downloader/openbis-request-cache.js
new file mode 100644
index 00000000000..f89dd844733
--- /dev/null
+++ b/deep_sequencing_unit/source/html/downloader/openbis-request-cache.js
@@ -0,0 +1,47 @@
+/**
+ * Caches openBIS JSON responses into the local browser storage.
+ *
+ * Once the local storage is populated with data from real
+ * server interactions, the UI development can be done offline
+ * based on the cached server responses.
+ *
+ * USAGE : include this script in your app *after* the openbis facade.
+ * Be careful not to distribute it to your customers.
+ *
+ * <script type="text/javascript" src="openbis-request-cache.js"></script>
+ */
+
+var original_ajax_request_func = ajaxRequest;
+
+ajaxRequest = function(settings) {
+
+ function getCacheId(settings) {
+ methodName = settings.data['method']
+ if (methodName.toLowerCase().indexOf('login') != -1) {
+ // do not store sensitive parameters information
+ // for login methods (e.g. username/password)
+ return methodName
+ } else {
+ params = settings.data['params']
+ return methodName + '-' + JSON.stringify(params)
+ }
+ }
+
+ cacheId = getCacheId(settings)
+ cachedResponse = localStorage.getItem(cacheId)
+
+ if (cachedResponse == null) {
+ originalCallback = settings.success
+ settings.success = function(response) {
+ localStorage.setItem(cacheId, JSON.stringify(response))
+ originalCallback(response)
+ }
+ original_ajax_request_func(settings);
+ } else {
+ // async execution after a delay of 100ms
+ setTimeout(function() {
+ settings.success(JSON.parse(cachedResponse))
+ }, 100)
+
+ }
+}
\ No newline at end of file
--
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