Add getLatestTimestamp()

source/RobotAPI/libraries/armem/memory/Entity.cpp

@@ -88,14 +88,15 @@ namespace armarx::armem
 
     const EntitySnapshot& Entity::getLatestSnapshot() const
     {
-        if (history.empty())
-        {
-            throw armem::error::EntityHistoryEmpty(name, "when getting the latest snapshot.");
-        }
-        ARMARX_CHECK_NOT_NULL(history.rbegin()->second);
-        return *history.rbegin()->second;
+        auto& latest = getLatestItem();
+        ARMARX_CHECK_NOT_NULL(latest.second);
+        return *latest.second;
     }
 
+    Time Entity::getLatestTimestamp() const
+    {
+        return getLatestItem().first;
+    }
 
     std::vector<Time> Entity::getTimestamps() const
     {
@@ -168,4 +169,13 @@ namespace armarx::armem
         }
     }
 
+    const std::map<Time, EntitySnapshotPtr>::value_type& Entity::getLatestItem() const
+    {
+        if (history.empty())
+        {
+            throw armem::error::EntityHistoryEmpty(name, "when getting the latest snapshot.");
+        }
+        return *history.rbegin();
+    }
+
 }

source/RobotAPI/libraries/armem/memory/Entity.h

@@ -42,10 +42,20 @@ namespace armarx::armem
         /**
          * @brief Return the snapshot with the most recent timestamp.
          * @return The latest snapshot.
+         * @throw `armem::error::EntityHistoryEmpty` If the history is empty.
          */
         EntitySnapshot& getLatestSnapshot();
         const EntitySnapshot& getLatestSnapshot() const;
 
+        /**
+         * @brief Get the latest timestamp.
+         * @throw `armem::error::EntityHistoryEmpty` If the history is empty.
+         */
+        Time getLatestTimestamp() const;
+
+        /**
+         * @brief Get all timestamps in the history.
+         */
         std::vector<Time> getTimestamps() const;
 
 
@@ -81,6 +91,13 @@ namespace armarx::armem
         void truncateHistoryToSize();
         void checkEntityName(const std::string& name) const;
 
+        /**
+         * @brief Return the snapshot with the most recent timestamp.
+         * @return The latest snapshot.
+         * @throw `armem::error::EntityHistoryEmpty` If the history is empty.
+         */
+        const std::map<Time, EntitySnapshotPtr>::value_type& getLatestItem() const;
+
 
     public: