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diff --git a/connectivity/source/inc/file/fcode.hxx b/connectivity/source/inc/file/fcode.hxx
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+++ b/connectivity/source/inc/file/fcode.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_CONNECTIVITY_SOURCE_INC_FILE_FCODE_HXX
+#define INCLUDED_CONNECTIVITY_SOURCE_INC_FILE_FCODE_HXX
+
+#include <connectivity/sqliterator.hxx>
+#include <com/sun/star/sdbc/DataType.hpp>
+#include <connectivity/FValue.hxx>
+#include <file/filedllapi.hxx>
+
+#include <stack>
+
+namespace connectivity
+{
+    class OSQLParseNode;
+    namespace file
+    {
+
+        class OOperand;
+        typedef std::stack<OOperand*> OCodeStack;
+
+        class OOO_DLLPUBLIC_FILE OCode
+        {
+        public:
+            //virtual dtor to allow this to be the root of the class hierarchy
+            virtual ~OCode();
+            //but that disables the default move ctor
+            OCode(OCode&&) = default;
+            //but that disables the rest of default ctors
+            OCode(const OCode&) = default;
+            OCode() = default;
+            //and same issue for the assignment operators
+            OCode& operator=(const OCode&) = default;
+            OCode& operator=(OCode&&) = default;
+        };
+
+
+        // operands that the parsetree generate
+        class OOO_DLLPUBLIC_FILE OOperand : public OCode
+        {
+        protected:
+            sal_Int32 m_eDBType;
+
+            OOperand(sal_Int32 _rType) : m_eDBType(_rType){}
+            OOperand() : m_eDBType(css::sdbc::DataType::OTHER){}
+
+        public:
+            virtual const ORowSetValue& getValue() const = 0;
+            virtual void setValue(const ORowSetValue& _rVal) = 0;
+
+            sal_Int32 getDBType() const {return m_eDBType;}
+            inline bool isValid() const;
+
+        };
+
+        class OOperandRow : public OOperand
+        {
+            sal_uInt16  m_nRowPos;
+            OValueRefRow    m_pRow;
+
+        protected:
+            OOperandRow(sal_uInt16 _nPos, sal_Int32 _rType);
+        public:
+            virtual const ORowSetValue& getValue() const override;
+            virtual void setValue(const ORowSetValue& _rVal) override;
+            void bindValue(const OValueRefRow& _pRow); // Bind to the value that the operand represents
+
+        };
+
+        // Attributes from a result row
+        class OOperandAttr : public OOperandRow
+        {
+        public:
+            OOperandAttr(sal_uInt16 _nPos,
+                         const css::uno::Reference< css::beans::XPropertySet>& _xColumn);
+
+        };
+
+        // Parameter for a predicate
+        class OOperandParam : public OOperandRow
+        {
+        public:
+            OOperandParam(connectivity::OSQLParseNode const * pNode, sal_Int32 _nPos);
+        };
+
+        // Value operands
+        class OOperandValue : public OOperand
+        {
+        protected:
+            ORowSetValue m_aValue;
+
+        protected:
+            OOperandValue(){}
+            OOperandValue(const ORowSetValue& _rVar, sal_Int32 eDbType)
+                : OOperand(eDbType)
+                , m_aValue(_rVar)
+            {}
+
+            OOperandValue(sal_Int32 eDbType) :OOperand(eDbType){}
+        public:
+            virtual const ORowSetValue& getValue() const override;
+            virtual void setValue(const ORowSetValue& _rVal) override;
+
+        };
+
+
+        // Constants
+        class OOperandConst : public OOperandValue
+        {
+        public:
+            OOperandConst(const connectivity::OSQLParseNode& rColumnRef, const OUString& aStrValue);
+
+        };
+
+
+        // Result operands
+        class OOperandResult : public OOperandValue
+        {
+        protected:
+            OOperandResult(sal_Int32 eDbType)
+                            :OOperandValue(eDbType) {}
+        public:
+            OOperandResult(const ORowSetValue& _rVar)
+                            :OOperandValue(_rVar, _rVar.getTypeKind()) {}
+        };
+
+
+        class OOperandResultBOOL : public OOperandResult
+        {
+        public:
+            OOperandResultBOOL(bool bResult) : OOperandResult(css::sdbc::DataType::BIT)
+            {
+                m_aValue = bResult ? 1.0 : 0.0;
+                m_aValue.setBound(true);
+            }
+        };
+
+        class OOperandResultNUM : public OOperandResult
+        {
+        public:
+            OOperandResultNUM(double fNum) : OOperandResult(css::sdbc::DataType::DOUBLE)
+            {
+                m_aValue = fNum;
+                m_aValue.setBound(true);
+            }
+        };
+
+        /** special stop operand
+            is appended when a list of arguments ends
+        */
+        class OStopOperand : public OOperandValue
+        {
+        public:
+            OStopOperand(){}
+        };
+
+        // Operators
+        class OOO_DLLPUBLIC_FILE OOperator : public OCode
+        {
+        public:
+            virtual void Exec(OCodeStack&) = 0;
+        };
+
+
+        // Boolean operators
+        class OOO_DLLPUBLIC_FILE OBoolOperator : public OOperator
+        {
+        public:
+            virtual void Exec(OCodeStack&) override;
+            virtual bool operate(const OOperand*, const OOperand*) const;
+        };
+
+        class OOp_NOT : public OBoolOperator
+        {
+        public:
+
+        protected:
+            virtual void Exec(OCodeStack&) override;
+            virtual bool operate(const OOperand*, const OOperand*) const override;
+        };
+
+        class OOp_AND : public OBoolOperator
+        {
+        public:
+
+        protected:
+            virtual bool operate(const OOperand*, const OOperand*) const override;
+        };
+
+        class OOp_OR : public OBoolOperator
+        {
+        public:
+        protected:
+            virtual bool operate(const OOperand*, const OOperand*) const override;
+        };
+
+        class OOO_DLLPUBLIC_FILE OOp_ISNULL : public OBoolOperator
+        {
+        public:
+        public:
+            virtual void Exec(OCodeStack&) override;
+            virtual bool operate(const OOperand*, const OOperand*) const override;
+        };
+
+        class OOO_DLLPUBLIC_FILE OOp_ISNOTNULL : public OOp_ISNULL
+        {
+        public:
+            virtual bool operate(const OOperand*, const OOperand*) const override;
+        };
+
+        class OOO_DLLPUBLIC_FILE OOp_LIKE : public OBoolOperator
+        {
+            const sal_Unicode cEscape;
+
+        public:
+            OOp_LIKE(const sal_Unicode cEsc):cEscape(cEsc){};
+
+            virtual bool operate(const OOperand*, const OOperand*) const override;
+        };
+
+        class OOp_NOTLIKE : public OOp_LIKE
+        {
+        public:
+        public:
+            OOp_NOTLIKE(const sal_Unicode cEsc):OOp_LIKE(cEsc){};
+
+            virtual bool operate(const OOperand*, const OOperand*) const override;
+        };
+
+        class OOO_DLLPUBLIC_FILE OOp_COMPARE : public OBoolOperator
+        {
+            sal_Int32 aPredicateType;
+
+        public:
+            OOp_COMPARE(sal_Int32 aPType)
+                         :aPredicateType(aPType) {}
+
+            sal_Int32 getPredicateType() const { return aPredicateType; }
+            virtual bool operate(const OOperand*, const OOperand*) const override;
+        };
+
+        // Numerical operators
+        class ONumOperator : public OOperator
+        {
+        public:
+            virtual void Exec(OCodeStack&) override;
+
+
+        protected:
+            virtual double operate(const double& fLeft,const double& fRight) const = 0;
+        };
+
+        class OOp_ADD : public ONumOperator
+        {
+        protected:
+            virtual double operate(const double& fLeft,const double& fRight) const override;
+        };
+
+        class OOp_SUB : public ONumOperator
+        {
+        protected:
+            virtual double operate(const double& fLeft,const double& fRight) const override;
+        };
+
+        class OOp_MUL : public ONumOperator
+        {
+        protected:
+            virtual double operate(const double& fLeft,const double& fRight) const override;
+        };
+
+        class OOp_DIV : public ONumOperator
+        {
+        protected:
+            virtual double operate(const double& fLeft,const double& fRight) const override;
+        };
+
+        inline bool OOperand::isValid() const
+        {
+            return getValue().getDouble() != 0.0;
+        }
+
+        // Operator
+        class ONthOperator : public OOperator
+        {
+        public:
+            virtual void Exec(OCodeStack&) override;
+
+
+        protected:
+            virtual ORowSetValue operate(const std::vector<ORowSetValue>& lhs) const = 0;
+        };
+
+        class OBinaryOperator : public OOperator
+        {
+        public:
+            virtual void Exec(OCodeStack&) override;
+
+
+        protected:
+            virtual ORowSetValue operate(const ORowSetValue& lhs,const ORowSetValue& rhs) const = 0;
+        };
+
+        class OUnaryOperator : public OOperator
+        {
+        public:
+            virtual void Exec(OCodeStack&) override;
+            virtual ORowSetValue operate(const ORowSetValue& lhs) const = 0;
+
+
+        };
+    }
+}
+
+#endif // INCLUDED_CONNECTIVITY_SOURCE_INC_FILE_FCODE_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */