handling DatasetEntries

src/fsfw/datapool/Dataset.cpp

@@ -4,6 +4,7 @@
 #include <fsfw/objectmanager/ObjectManager.h>
 #include <fsfw/returnvalues/returnvalue.h>
 
+//TODO for non allocated: detect if initialized, and if not, call it
 
 #include "HasDatapoolIF.h"
 

src/fsfw/datapool/DatasetEntry.h

@@ -20,7 +20,12 @@ class DatasetEntry : public Parameter<T>, public DatasetEntryIF {
       : Parameter<T>(owner)
 #endif
   {
-    owner->registerEntry(this);
+    allocated = owner->registerEntry(this);
+    if (!allocated) {
+      return;
+    }
+    storedValue = new T();
+    storedValid = new bool
   }
 
  public:
@@ -32,19 +37,45 @@ class DatasetEntry : public Parameter<T>, public DatasetEntryIF {
   static DatasetEntry createDatasetEntry(Dataset *owner) { return DatasetEntry(owner); }
 #endif
 
+  ~DatasetEntry() {
+    if (allocated) {
+      delete storedValue;
+      delete storedValid;
+    }
+  }
+
   virtual void setValid(bool isValid) { valid = isValid; }
 
   virtual bool getValid() { return valid; }
 
  protected:
-  virtual void commit() {}
+  virtual void commit() {
-  virtual void read() {}
+    *storedValue = value;
-  virtual void connect(DatasetEntryIF *entry) {}
+    *storedValid = valid;
+  }
+  virtual void read() {
+    value = *storedValue;
+    valid = *storedValid;
+  }
 
-  virtual bool changed() { return false; }
+  virtual void connect(DatasetEntryIF *entry) {
+    HousekeepingEntry<T> *theOther = dynamic_cast<HousekeepingEntry<T> *>(entry);
+    if (theOther == nullptr) {
+      // Configuration error
+      return;
+    }
+    this->storedValue = theOther->storedValue;
+    this->storedValid = theOther->storedValid;
+  }
+
+  virtual bool changed() { return ((value != *storedValue) || (valid != *storedValid)); }
 
  private:
+  T value;
+  T *storedValue;
+  bool *storedValid;
   bool valid;
+  bool allocated;
 };
 
 #ifdef FSFW_INTROSPECTION

src/fsfw/datapool/DatasetEntryIF.h

@@ -26,10 +26,18 @@ class DatasetEntryIF {
   virtual void read() = 0;
   virtual void connect(DatasetEntryIF* entry) = 0;
 
+  /**
+   * create actualValue
+  */
+  virtual void allocate() = 0;
+
   /**
    * returns if value and actual value is different
    */
   virtual bool changed() = 0;
+
+private:
+
 };
 
 #endif /* FSFW_DATAPOOL_POOLENTRYIF_H_ */