1 files changed, 57 insertions, 0 deletions
diff --git a/infrastructure/framework-src/modules/sqlbase/persistent_vars.js b/infrastructure/framework-src/modules/sqlbase/persistent_vars.js
new file mode 100644
index 0000000..1c4cc95
--- /dev/null
+++ b/infrastructure/framework-src/modules/sqlbase/persistent_vars.js
@@ -0,0 +1,57 @@
+/**
+ * Copyright 2009 Google Inc.
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS-IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+import("sqlbase.sqlobj");
+import("sqlbase.sqlcommon");
+
+jimport("java.lang.System.out.println");
+
+// TODO: add caching?
+
+// Curently supports:
+//   Strings
+
+function get(name) {
+  if (!sqlcommon.doesTableExist('persistent_vars')) {
+    return undefined;
+  }
+  var r = sqlobj.selectSingle('persistent_vars', {name: name});
+  if (!r) {
+    return undefined;
+  }
+  return r.stringVal;
+}
+
+function put(name, val) {
+  if (typeof(val) != 'string') {
+    throw Error("unsupported type for persistent_vars: "+typeof(val));
+  }
+
+  var r = sqlobj.selectSingle('persistent_vars', {name: name});
+  if (r) {
+    sqlobj.updateSingle('persistent_vars', {id: r.id}, {stringVal: val});
+  } else {
+    sqlobj.insert('persistent_vars', {name: name, stringVal: val});
+  }
+}
+
+function remove(name) {
+  var r = sqlobj.selectSingle('persistent_vars', {name: name});
+  if (r) {
+    sqlobj.deleteRows('persistent_vars', {id: r.id});
+  }
+}