1 files changed, 44 insertions, 0 deletions
diff --git a/lib/livestatus/aggregator.hpp b/lib/livestatus/aggregator.hpp
new file mode 100644
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+++ b/lib/livestatus/aggregator.hpp
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+/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
+
+#ifndef AGGREGATOR_H
+#define AGGREGATOR_H
+
+#include "livestatus/i2-livestatus.hpp"
+#include "livestatus/table.hpp"
+#include "livestatus/filter.hpp"
+
+namespace icinga
+{
+
+/**
+ * @ingroup livestatus
+ */
+struct AggregatorState
+{
+	virtual ~AggregatorState();
+};
+
+/**
+ * @ingroup livestatus
+ */
+class Aggregator : public Object
+{
+public:
+	DECLARE_PTR_TYPEDEFS(Aggregator);
+
+	virtual void Apply(const Table::Ptr& table, const Value& row, AggregatorState **state) = 0;
+	virtual double GetResultAndFreeState(AggregatorState *state) const = 0;
+	void SetFilter(const Filter::Ptr& filter);
+
+protected:
+	Aggregator() = default;
+
+	Filter::Ptr GetFilter() const;
+
+private:
+	Filter::Ptr m_Filter;
+};
+
+}
+
+#endif /* AGGREGATOR_H */