From 5591077fe9241def5fa33fc90a24681c8b7b0976 Mon Sep 17 00:00:00 2001
From: Florian Dold <florian.dold@gmail.com>
Date: Tue, 23 Feb 2016 14:07:53 +0100
Subject: repurchase detection

---
 extension/lib/wallet/query.ts | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'extension/lib/wallet/query.ts')

diff --git a/extension/lib/wallet/query.ts b/extension/lib/wallet/query.ts
index b82c85189..62411dab3 100644
--- a/extension/lib/wallet/query.ts
+++ b/extension/lib/wallet/query.ts
@@ -287,6 +287,29 @@ class QueryRoot {
                   .then(() => promise);
   }
 
+  /**
+   * Get one object from a store by its key.
+   */
+  getIndexed(storeName, indexName, key): Promise<any> {
+    if (key === void 0) {
+      throw Error("key must not be undefined");
+    }
+
+    const {resolve, promise} = openPromise();
+
+    const doGetIndexed = (tx) => {
+      const req = tx.objectStore(storeName).index(indexName).get(key);
+      req.onsuccess = (r) => {
+        resolve(req.result);
+      };
+    };
+
+    this.addWork(doGetIndexed, storeName, false);
+    return Promise.resolve()
+                  .then(() => this.finish())
+                  .then(() => promise);
+  }
+
   /**
    * Finish the query, and start the query in the first place if necessary.
    */
-- 
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