add Interet class for flexibility if we need selectors in the future
diff --git a/include/ccnx-interest.h b/include/ccnx-interest.h
new file mode 100644
index 0000000..fd1db18
--- /dev/null
+++ b/include/ccnx-interest.h
@@ -0,0 +1,31 @@
+#ifndef CCNX_INTEREST_H
+#define CCNX_INTEREST_H
+#include "ccnx-common.h"
+
+namespace Ccnx {
+
+// Currently, other classes use string when Interest is needed.
+// The constructor from string ensures that if we change other classes' APIs to use Interest object
+// instead of string, it is still backwards compatible
+// Using a separate Interest class instead of simple string allows us to add control fields
+// to the Interest, e.g. ChildSelector. Perhaps that's a separate Selectors class. Will do it after ChronoShare project finishes.
+
+// Since the selector is only useful when sending Interest (in callbacks, usually we only need to know the name of the Interest),
+// we currently only use Interest object in sendInterest of CcnxWrapper. In other places, Interest object is equivalent of
+// its string name.
+
+class Interest
+{
+public:
+ Interest(const string &name) : m_name(name) {}
+ virtual ~Interest() {}
+
+ string
+ name() const { return m_name; }
+
+protected:
+ string m_name;
+};
+
+} // Ccnx
+#endif