--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Core/SQLite/FunctionContext.cpp	Thu Jul 19 14:32:22 2012 +0200
@@ -0,0 +1,94 @@
+/**
+ * Palantir - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012 Medical Physics Department, CHU of Liege,
+ * Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "FunctionContext.h"
+
+#include <sqlite3.h>
+
+namespace Palantir
+{
+  namespace SQLite
+  {
+    FunctionContext::FunctionContext(struct sqlite3_context* context,
+                                     int argc,
+                                     struct ::Mem** argv)
+    {
+      assert(context != NULL);
+      assert(argc >= 0);
+      assert(argv != NULL);
+
+      context_ = context;
+      argc_ = static_cast<unsigned int>(argc);
+      argv_ = argv;
+    }
+
+    void FunctionContext::CheckIndex(unsigned int index) const
+    {
+      if (index >= argc_)
+      {
+        throw PalantirException(ErrorCode_ParameterOutOfRange);
+      }
+    }
+
+    ColumnType FunctionContext::GetColumnType(unsigned int index) const
+    {
+      CheckIndex(index);
+      return static_cast<SQLite::ColumnType>(sqlite3_value_type(argv_[index]));
+    }
+
+    int FunctionContext::GetIntValue(unsigned int index) const
+    {
+      CheckIndex(index);
+      return sqlite3_value_int(argv_[index]);
+    }
+
+    double FunctionContext::GetDoubleValue(unsigned int index) const
+    {
+      CheckIndex(index);
+      return sqlite3_value_double(argv_[index]);
+    }
+
+    std::string FunctionContext::GetStringValue(unsigned int index) const
+    {
+      CheckIndex(index);
+      return std::string(reinterpret_cast<const char*>(sqlite3_value_text(argv_[index])));
+    }
+  
+    void FunctionContext::SetNullResult()
+    {
+      sqlite3_result_null(context_);
+    }
+
+    void FunctionContext::SetIntResult(int value)
+    {
+      sqlite3_result_int(context_, value);
+    }
+
+    void FunctionContext::SetDoubleResult(double value)
+    {
+      sqlite3_result_double(context_, value);
+    }
+
+    void FunctionContext::SetStringResult(const std::string& str)
+    {
+      sqlite3_result_text(context_, str.data(), str.size(), SQLITE_TRANSIENT);
+    }
+  }
+}