sqlite handle: Initial implementation
Note that this commit does not properly implement ChildSelector==1
(rightmost). Currently, this selector just means the max value of
names vector, but it is not right. This is a known issue and is tracked
as part of refs #1433 (http://redmine.named-data.net/issues/1433).
Change-Id: I4d6dfaa5d52a3ab955aefa21d7b330cff7c68be6
diff --git a/storage/storage-handle.hpp b/storage/storage-handle.hpp
new file mode 100644
index 0000000..48359d4
--- /dev/null
+++ b/storage/storage-handle.hpp
@@ -0,0 +1,127 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
+/**
+ * Copyright (C) 2014 Regents of the University of California.
+ * See COPYING for copyright and distribution information.
+ */
+
+#ifndef REPO_STORAGE_STORAGE_HANDLE_HPP
+#define REPO_STORAGE_STORAGE_HANDLE_HPP
+
+#include <string>
+#include <stdexcept>
+
+#include <ndn-cpp-dev/interest.hpp>
+#include <ndn-cpp-dev/name.hpp>
+#include <ndn-cpp-dev/data.hpp>
+#include <ndn-cpp-dev/selectors.hpp>
+#include <ndn-cpp-dev/key-locator.hpp>
+
+#include "storage-method.hpp"
+
+namespace repo {
+
+using ndn::Interest;
+using ndn::Name;
+using ndn::Data;
+using ndn::Selectors;
+using ndn::KeyLocator;
+using ndn::Block;
+using ndn::Exclude;
+
+using std::vector;
+using std::string;
+using boost::noncopyable;
+
+/**
+ * @brief this class defines handles to read, insert and delete data packets in storage media
+ */
+
+class StorageHandle : noncopyable
+{
+public:
+ class Error : public std::runtime_error
+ {
+ public:
+ explicit
+ Error(const std::string& what)
+ : std::runtime_error(what)
+ {
+ }
+ };
+
+ /**
+ * @brief Create a basic class object the specified storage type
+ */
+ explicit
+ StorageHandle(StorageMethod storageMethod);
+
+ virtual
+ ~StorageHandle();
+
+ /**
+ * @return storage method defined in storage-define.hpp
+ */
+ StorageMethod
+ getStorageMethod() const;
+
+ /**
+ * @brief insert data
+ * @return true on success, false otherwise
+ */
+ virtual bool
+ insertData(const Data& data) = 0;
+
+ /**
+ * @brief delete the data that exactly matches the name
+ * @return true on success, false otherwise
+ * @note It's considered successful if Data doesn't exist.
+ */
+ virtual bool
+ deleteData(const Name& name) = 0;
+
+ /**
+ * @brief find data according to the interest. This interest may contain selectors.
+ * @param[out] data Data matching Interest.
+ * @return true if Data is found, false otherwise
+ */
+ virtual bool
+ readData(const Interest& interest, Data& data) = 0;
+
+ /**
+ * @return if storage media has data packets with this name, return true, else return false
+ */
+ virtual bool
+ hasName(const Name& name) = 0;
+
+ /**
+ * @brief select any data conforms to the selector
+ * @param[out] names Data names matching @p name and @p selectors.
+ * @return true if at least one Data is found, false otherwise
+ */
+ virtual bool
+ readNameAny(const Name& name, const Selectors& selectors, vector<Name>& names) = 0;
+
+private:
+ StorageMethod m_storageMethod;
+};
+
+inline
+StorageHandle::StorageHandle(StorageMethod storageMethod)
+ : m_storageMethod(storageMethod)
+{
+}
+
+inline
+StorageHandle::~StorageHandle()
+{
+}
+
+inline StorageMethod
+StorageHandle::getStorageMethod() const
+{
+ return m_storageMethod;
+}
+
+} // namespace repo
+
+#endif // REPO_STORAGE_STORAGE_HANDLE_HPP