--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Odbc/OdbcStatement.cpp	Tue Aug 10 20:08:53 2021 +0200
@@ -0,0 +1,86 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2021 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Affero 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
+ * Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "OdbcStatement.h"
+
+#include "OdbcEnvironment.h"
+
+#include <Logging.h>
+#include <OrthancException.h>
+
+#include <sqlext.h>
+
+
+namespace OrthancDatabases
+{
+  OdbcStatement::OdbcStatement(SQLHSTMT databaseHandle)
+  {
+    if (!SQL_SUCCEEDED(SQLAllocHandle(SQL_HANDLE_STMT, databaseHandle, &handle_)))
+    {
+      throw Orthanc::OrthancException(Orthanc::ErrorCode_Database, "Cannot allocate statement");          
+    }
+  }
+
+  
+  OdbcStatement::~OdbcStatement()
+  {
+    if (!SQL_SUCCEEDED(SQLFreeHandle(SQL_HANDLE_STMT, handle_)))
+    {
+      LOG(ERROR) << "Cannot destruct statement";
+    }
+  }
+
+  
+  std::string OdbcStatement::FormatError()
+  {
+    return OdbcEnvironment::FormatError(handle_, SQL_HANDLE_STMT);
+  }
+
+
+  void OdbcStatement::CheckCollision(Dialect dialect)
+  {
+    SQLINTEGER native = -1;
+    SQLCHAR stateBuf[SQL_SQLSTATE_SIZE + 1];
+    SQLSMALLINT stateLength = 0;
+
+    for (SQLSMALLINT recNum = 1; ; recNum++)
+    {
+      if (SQL_SUCCEEDED(SQLGetDiagField(SQL_HANDLE_STMT, handle_,
+                                        recNum, SQL_DIAG_NATIVE, &native, SQL_IS_INTEGER, 0)) &&
+          SQL_SUCCEEDED(SQLGetDiagField(SQL_HANDLE_STMT, handle_,
+                                        recNum, SQL_DIAG_SQLSTATE, &stateBuf, sizeof(stateBuf), &stateLength)))
+      {
+        const std::string state(reinterpret_cast<const char*>(stateBuf));
+          
+        if (state == "40001" ||
+            (dialect == Dialect_MySQL && native == 1213) ||
+            (dialect == Dialect_MSSQL && native == 1205))
+        {
+          throw Orthanc::OrthancException(Orthanc::ErrorCode_DatabaseCannotSerialize);
+        }
+      }
+      else
+      {
+        return;
+      }
+    }
+  }
+}