result dbo

src/DBO/Result.h

@@ -0,0 +1,52 @@
+//
+// Created by robin on 8/9/15.
+//
+
+#ifndef PDNS_SLAVE_RESULT_H
+#define PDNS_SLAVE_RESULT_H
+
+# include <string>
+# include <vector>
+
+template <class T> class Result
+{
+public:
+    Result();
+
+    Result(const T& data);
+
+    virtual ~Result();
+
+    Result<T>& ok(const T& data);
+
+    T& getData();
+
+    bool isSuccess() const;
+
+    Result<T>& addWarning(const std::string& warning);
+
+    const std::vector<std::string>& getWarnings() const;
+
+    Result<T>& error(const std::string& error);
+
+    const std::string& getError() const;
+
+    bool operator !() const;
+
+    operator bool() const;
+
+    const Result<T>& print() const;
+
+private:
+    T _data;
+
+    std::vector<std::string> _warnings;
+
+    std::string _error;
+};
+
+typedef Result<bool> BResult;
+
+# include "DBO/Result.hxx"
+
+#endif //PDNS_SLAVE_RESULT_H

src/DBO/Result.hxx

@@ -0,0 +1,89 @@
+//
+// Created by robin on 8/9/15.
+//
+
+#include <iostream>
+#include "Result.h"
+
+template<class T>
+Result<T>::Result()
+{
+}
+
+template<class T>
+Result<T>::Result(const T &data)
+        : _data(data)
+{
+}
+
+template<class T>
+Result<T>::~Result()
+{
+}
+
+template<class T>
+Result<T> &Result<T>::ok(const T &data)
+{
+    _data = data;
+    return *this;
+}
+
+template<class T>
+T &Result<T>::getData()
+{
+    return _data;
+}
+
+template<class T>
+bool Result<T>::isSuccess() const
+{
+    return _error.empty();
+}
+
+template<class T>
+const std::vector<std::string>& Result<T>::getWarnings() const
+{
+    return _warnings;
+}
+
+template<class T>
+Result<T>& Result<T>::addWarning(const std::string &warning)
+{
+    _warnings.push_back(warning);
+    return *this;
+}
+
+template<class T>
+bool Result<T>::operator!() const
+{
+    return !isSuccess();
+}
+
+template<class T>
+Result<T>::operator bool() const
+{
+    return isSuccess();
+}
+
+template<class T>
+Result<T> &Result<T>::error(const std::string &error)
+{
+    _error = error;
+    return *this;
+}
+
+template<class T>
+const std::string &Result<T>::getError() const
+{
+    return _error;
+}
+
+template<class T>
+const Result<T>& Result<T>::print() const
+{
+    for (auto warning : _warnings)
+        std::cerr << "WARNING: " << warning << std::endl;
+    if (!isSuccess())
+        std::cerr << "ERROR: " << _error << std::endl;
+    return *this;
+}