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diff --git a/sc/inc/dpcache.hxx b/sc/inc/dpcache.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 .
+ */
+#pragma once
+
+#include "address.hxx"
+#include "calcmacros.hxx"
+#include "dpitemdata.hxx"
+#include "dpnumgroupinfo.hxx"
+#include "scdllapi.h"
+#include "types.hxx"
+
+#include <mdds/flat_segment_tree.hpp>
+#include <tools/long.hxx>
+#include <o3tl/sorted_vector.hxx>
+
+#include <memory>
+#include <unordered_set>
+#include <vector>
+
+struct ScQueryParam;
+class ScDPObject;
+class ScDocument;
+class SvNumberFormatter;
+
+enum class SvNumFormatType : sal_Int16;
+
+/**
+ * This class represents the cached data part of the datapilot cache table
+ * implementation.
+ */
+class SC_DLLPUBLIC ScDPCache
+{
+public:
+    typedef std::unordered_set<OUString> StringSetType;
+    typedef mdds::flat_segment_tree<SCROW, bool> EmptyRowsType;
+    typedef std::vector<ScDPItemData> ScDPItemDataVec;
+    typedef o3tl::sorted_vector<ScDPObject*> ScDPObjectSet;
+    typedef std::vector<SCROW> IndexArrayType;
+
+    struct SAL_DLLPRIVATE GroupItems
+    {
+        ScDPItemDataVec maItems;
+        ScDPNumGroupInfo maInfo;
+        sal_Int32 mnGroupType;
+
+        GroupItems();
+        GroupItems(const GroupItems&) = delete;
+        const GroupItems& operator=(const GroupItems&) = delete;
+        GroupItems(const ScDPNumGroupInfo& rInfo, sal_Int32 nGroupType);
+    };
+
+    struct SAL_DLLPRIVATE Field
+    {
+        /**
+         * Optional items for grouped field.
+         */
+        std::unique_ptr<GroupItems> mpGroup;
+
+        /**
+         * Unique values in the field, stored in ascending order.
+         */
+        ScDPItemDataVec maItems;
+
+        /**
+         * Original source data represented as indices to the unique value
+         * list.  The order of the data is as they appear in the original
+         * data source.
+         */
+        IndexArrayType maData;
+
+        sal_uInt32 mnNumFormat;
+
+        Field();
+        Field(const Field&) = delete;
+        const Field& operator=(const Field&) = delete;
+    };
+
+    /**
+     * Interface for connecting to database source.  Column index is 0-based.
+     */
+    class DBConnector
+    {
+    public:
+        virtual tools::Long getColumnCount() const = 0;
+        virtual OUString getColumnLabel(tools::Long nCol) const = 0;
+        virtual bool first() = 0;
+        virtual bool next() = 0;
+        virtual void finish() = 0;
+        virtual void getValue(tools::Long nCol, ScDPItemData& rData, SvNumFormatType& rNumType) const = 0;
+        virtual ~DBConnector() {}
+    };
+
+private:
+
+    ScDocument& mrDoc;
+    SCCOL mnColumnCount;
+
+    /**
+     * All pivot table objects that references this cache.
+     */
+    mutable ScDPObjectSet maRefObjects;
+
+    typedef std::vector< std::unique_ptr<Field> > FieldsType;
+    typedef std::vector< std::unique_ptr<GroupItems> > GroupFieldsType;
+
+    FieldsType maFields;
+    GroupFieldsType maGroupFields;
+    std::vector<StringSetType> maStringPools; // one for each field.
+
+    std::vector<OUString> maLabelNames; // Stores dimension names and the data layout dimension name at position 0.
+    EmptyRowsType maEmptyRows;
+    SCROW mnDataSize;
+    SCROW mnRowCount;
+
+    bool mbDisposing;
+
+public:
+    rtl_uString* InternString( size_t nDim, const OUString& rStr );
+    void AddReference(ScDPObject* pObj) const;
+    void RemoveReference(ScDPObject* pObj) const;
+    const ScDPObjectSet& GetAllReferences() const;
+
+    SCROW GetIdByItemData(tools::Long nDim, const ScDPItemData& rItem) const;
+
+    static sal_uInt32 GetLocaleIndependentFormat( SvNumberFormatter& rFormatter, sal_uInt32 nNumFormat );
+    static OUString GetLocaleIndependentFormattedNumberString( double fValue );
+    static OUString GetLocaleIndependentFormattedString( double fValue, SvNumberFormatter& rFormatter, sal_uInt32 nNumFormat );
+    OUString GetFormattedString(tools::Long nDim, const ScDPItemData& rItem, bool bLocaleIndependent) const;
+    SvNumberFormatter* GetNumberFormatter() const;
+
+    tools::Long AppendGroupField();
+    void ResetGroupItems(tools::Long nDim, const ScDPNumGroupInfo& rNumInfo, sal_Int32 nGroupType);
+    SCROW SetGroupItem(tools::Long nDim, const ScDPItemData& rData);
+    void GetGroupDimMemberIds(tools::Long nDim, std::vector<SCROW>& rIds) const;
+    void ClearGroupFields();
+    void ClearAllFields();
+    const ScDPNumGroupInfo* GetNumGroupInfo(tools::Long nDim) const;
+
+    /**
+     * Return a group type identifier.  The values correspond with
+     * css::sheet::DataPilotFieldGroupBy constant values.
+     *
+     * @param nDim 0-based dimension index.
+     *
+     * @return group type identifier, or 0 on failure.
+     */
+    sal_Int32 GetGroupType(tools::Long nDim) const;
+
+    SCCOL GetDimensionIndex(std::u16string_view sName) const;
+    sal_uInt32 GetNumberFormat( tools::Long nDim ) const;
+    bool  IsDateDimension( tools::Long nDim ) const ;
+    tools::Long GetDimMemberCount(tools::Long nDim) const;
+
+    const IndexArrayType* GetFieldIndexArray( size_t nDim ) const;
+    const ScDPItemDataVec& GetDimMemberValues( SCCOL nDim ) const;
+    void InitFromDoc(ScDocument& rDoc, const ScRange& rRange);
+    bool InitFromDataBase(DBConnector& rDB);
+
+    /**
+     * Row count is the number of records plus any trailing empty rows in case
+     * the source data is sheet and contains trailing empty rows.
+     */
+    SCROW GetRowCount() const;
+
+    /**
+     * Data size is the number of records without any trailing empty rows for
+     * sheet source data.  For any other source type, this should equal the
+     * row count.
+     */
+    SCROW GetDataSize() const;
+    SCROW GetItemDataId( sal_uInt16 nDim, SCROW nRow, bool bRepeatIfEmpty ) const;
+    OUString GetDimensionName(std::vector<OUString>::size_type nDim) const;
+    bool IsRowEmpty(SCROW nRow) const;
+    bool ValidQuery(SCROW nRow, const ScQueryParam& rQueryParam) const;
+
+    ScDocument& GetDoc() const;
+    tools::Long GetColumnCount() const;
+
+    const ScDPItemData* GetItemDataById( tools::Long nDim, SCROW nId ) const;
+
+    size_t GetFieldCount() const;
+    size_t GetGroupFieldCount() const;
+
+    ScDPCache(const ScDPCache&) = delete;
+    const ScDPCache& operator=(const ScDPCache&) = delete;
+    ScDPCache(ScDocument& rDoc);
+    ~ScDPCache();
+
+#if DUMP_PIVOT_TABLE
+    void Dump() const;
+#endif
+
+private:
+    void PostInit();
+    void Clear();
+    const GroupItems* GetGroupItems(tools::Long nDim) const;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */