--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancFramework/Sources/SQLite/FunctionContext.cpp	Wed Jun 10 20:30:34 2020 +0200
@@ -0,0 +1,127 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ *
+ * Copyright (C) 2012-2016 Sebastien Jodogne <s.jodogne@orthanc-labs.com>,
+ * Medical Physics Department, CHU of Liege, Belgium
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *    * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *    * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *    * Neither the name of the CHU of Liege, nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ **/
+
+
+#if ORTHANC_SQLITE_STANDALONE != 1
+#include "../PrecompiledHeaders.h"
+#endif
+
+#include "FunctionContext.h"
+#include "OrthancSQLiteException.h"
+
+#include <string>
+
+#include "sqlite3.h"
+
+namespace Orthanc
+{
+  namespace SQLite
+  {
+    FunctionContext::FunctionContext(struct sqlite3_context* context,
+                                     int argc,
+                                     Internals::SQLiteValue** 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 OrthancSQLiteException(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]);
+    }
+
+    int64_t FunctionContext::GetInt64Value(unsigned int index) const
+    {
+      CheckIndex(index);
+      return sqlite3_value_int64(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])));
+    }
+
+    bool FunctionContext::IsNullValue(unsigned int index) const
+    {
+      CheckIndex(index);
+      return sqlite3_value_type(argv_[index]) == SQLITE_NULL;
+    }
+  
+    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(), static_cast<int>(str.size()), SQLITE_TRANSIENT);
+    }
+  }
+}