Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 110 insertions, 0 deletions

diff --git a/connectivity/source/inc/TSortIndex.hxx b/connectivity/source/inc/TSortIndex.hxx
new file mode 100644
index 000000000..3ac339f7e
--- /dev/null
+++ b/connectivity/source/inc/TSortIndex.hxx
@@ -0,0 +1,110 @@
+/* -*- 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 <connectivity/dbtoolsdllapi.hxx>
+#include "TKeyValue.hxx"
+
+namespace connectivity
+{
+    enum class OKeyType
+    {
+        NONE,        // do not sort
+        Double,      // numeric key
+        String       // String Key
+    };
+
+    enum class TAscendingOrder
+    {
+        ASC     = 1,            // ascending
+        DESC    = -1            // otherwise
+    };
+
+    class OKeySet;
+    class OKeyValue;                // simple class which holds a sal_Int32 and a std::vector<ORowSetValueDecoratorRef>
+
+    /**
+        The class OSortIndex can be used to implement a sorted index.
+        This can depend on the fields which should be sorted.
+    */
+    class OOO_DLLPUBLIC_DBTOOLS OSortIndex
+    {
+    public:
+        typedef std::vector<std::pair<sal_Int32, std::unique_ptr<OKeyValue>>> TIntValuePairVector;
+        typedef std::vector<OKeyType> TKeyTypeVector;
+
+    private:
+        TIntValuePairVector             m_aKeyValues;
+        TKeyTypeVector                  m_aKeyType;
+        std::vector<TAscendingOrder>  m_aAscending;
+        bool                        m_bFrozen;
+
+    public:
+
+        OSortIndex( std::vector<OKeyType>&& _aKeyType,
+                    std::vector<TAscendingOrder>&& _aAscending);
+        OSortIndex(OSortIndex const &) = delete; // MSVC2015 workaround
+        OSortIndex& operator=(OSortIndex const &) = delete; // MSVC2015 workaround
+
+        ~OSortIndex();
+
+        /**
+            AddKeyValue appends a new value.
+            @param
+                pKeyValue   the keyvalue to be appended
+            ATTENTION: when the sortindex is already frozen the parameter will be deleted
+        */
+        void AddKeyValue(std::unique_ptr<OKeyValue> pKeyValue);
+
+        /**
+            Freeze freezes the sortindex so that new values could only be appended by their value
+        */
+        void Freeze();
+
+        /**
+            CreateKeySet creates the keyset which values could be used to travel in your table/result
+            The returned keyset is frozen.
+        */
+        ::rtl::Reference<OKeySet> CreateKeySet();
+
+        const std::vector<OKeyType>& getKeyType() const { return m_aKeyType; }
+        TAscendingOrder getAscending(std::vector<TAscendingOrder>::size_type _nPos) const { return m_aAscending[_nPos]; }
+
+    };
+
+    // MSVC hack to avoid multiply defined std::vector-related symbols:
+    class OKeySet_Base: public ORefVector<sal_Int32> {};
+
+    /**
+        The class OKeySet is a refcountable vector which also has a state.
+        This state gives information about if the keyset is fixed.
+    */
+    class OOO_DLLPUBLIC_DBTOOLS OKeySet : public OKeySet_Base
+    {
+        bool m_bFrozen;
+    public:
+        OKeySet()
+            : m_bFrozen(false){}
+
+        bool    isFrozen() const   { return m_bFrozen; }
+        void    setFrozen()        { m_bFrozen = true; }
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */