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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 .
 */

#include "connpoolconfig.hxx"
#include "connpoolsettings.hxx"

#include "connpooloptions.hxx"
#include <svl/itemset.hxx>
#include <unotools/confignode.hxx>
#include <svl/eitem.hxx>
#include <comphelper/processfactory.hxx>
#include "sdbcdriverenum.hxx"


namespace offapp
{


    using namespace ::utl;
    using namespace ::com::sun::star::uno;


    static OUString getConnectionPoolNodeName()
    {
        return OUString("org.openoffice.Office.DataAccess/ConnectionPool" );
    }


    static OUString getEnablePoolingNodeName()
    {
        return OUString("EnablePooling");
    }


    static OUString getDriverSettingsNodeName()
    {
        return OUString("DriverSettings");
    }


    static OUString getDriverNameNodeName()
    {
        return OUString("DriverName");
    }


    static OUString getEnableNodeName()
    {
        return OUString("Enable");
    }


    static OUString getTimeoutNodeName()
    {
        return OUString("Timeout");
    }

    void ConnectionPoolConfig::GetOptions(SfxItemSet& _rFillItems)
    {
        // the config node where all pooling relevant info are stored under
        OConfigurationTreeRoot aConnectionPoolRoot = OConfigurationTreeRoot::createWithComponentContext(
            ::comphelper::getProcessComponentContext(), getConnectionPoolNodeName(), -1, OConfigurationTreeRoot::CM_READONLY);

        // the global "enabled" flag
        Any aEnabled = aConnectionPoolRoot.getNodeValue(getEnablePoolingNodeName());<--- Variable 'aEnabled' is assigned a value that is never used.
        bool bEnabled = true;
        aEnabled >>= bEnabled;<--- Variable 'aEnabled' is assigned a value that is never used.
        _rFillItems.Put(SfxBoolItem(SID_SB_POOLING_ENABLED, bEnabled));

        // the settings for the single drivers
        DriverPoolingSettings aSettings;
        // first get all the drivers register at the driver manager
        ODriverEnumeration aEnumDrivers;
        for (auto const& elem : aEnumDrivers)
        {
            aSettings.push_back(DriverPooling(elem));<--- Consider using std::transform algorithm instead of a raw loop.
        }

        // then look for which of them settings are stored in the configuration
        OConfigurationNode aDriverSettings = aConnectionPoolRoot.openNode(getDriverSettingsNodeName());

        Sequence< OUString > aDriverKeys = aDriverSettings.getNodeNames();
        const OUString* pDriverKeys = aDriverKeys.getConstArray();
        const OUString* pDriverKeysEnd = pDriverKeys + aDriverKeys.getLength();
        for (;pDriverKeys != pDriverKeysEnd; ++pDriverKeys)
        {
            // the name of the driver in this round
            OConfigurationNode aThisDriverSettings = aDriverSettings.openNode(*pDriverKeys);
            OUString sThisDriverName;
            aThisDriverSettings.getNodeValue(getDriverNameNodeName()) >>= sThisDriverName;

            // look if we (resp. the driver manager) know this driver
            // doing O(n) search here, which is expensive, but this doesn't matter in this small case ...
            DriverPoolingSettings::iterator aLookup;
            for    (   aLookup = aSettings.begin();
                    aLookup != aSettings.end();
                    ++aLookup
                )
                if (sThisDriverName == aLookup->sName)
                    break;

            if (aLookup == aSettings.end())
            {   // do not know the driver - add it
                aSettings.push_back(DriverPooling(sThisDriverName));

                // and the position of the new entry
                aLookup = aSettings.end();
                --aLookup;
            }

            // now fill this entry with the settings from the configuration
            aThisDriverSettings.getNodeValue(getEnableNodeName()) >>= aLookup->bEnabled;
            aThisDriverSettings.getNodeValue(getTimeoutNodeName()) >>= aLookup->nTimeoutSeconds;
        }

        _rFillItems.Put(DriverPoolingSettingsItem(SID_SB_DRIVER_TIMEOUTS, aSettings));
    }


    void ConnectionPoolConfig::SetOptions(const SfxItemSet& _rSourceItems)
    {
        // the config node where all pooling relevant info are stored under
        OConfigurationTreeRoot aConnectionPoolRoot = OConfigurationTreeRoot::createWithComponentContext(
            ::comphelper::getProcessComponentContext(), getConnectionPoolNodeName());

        if (!aConnectionPoolRoot.isValid())
            // already asserted by the OConfigurationTreeRoot
            return;

        bool bNeedCommit = false;

        // the global "enabled" flag
        const SfxBoolItem* pEnabled = _rSourceItems.GetItem<SfxBoolItem>(SID_SB_POOLING_ENABLED);
        if (pEnabled)
        {
            bool bEnabled = pEnabled->GetValue();
            aConnectionPoolRoot.setNodeValue(getEnablePoolingNodeName(), Any(bEnabled));
            bNeedCommit = true;
        }

        // the settings for the single drivers
        const DriverPoolingSettingsItem* pDriverSettings = _rSourceItems.GetItem<DriverPoolingSettingsItem>(SID_SB_DRIVER_TIMEOUTS);
        if (pDriverSettings)
        {
            OConfigurationNode aDriverSettings = aConnectionPoolRoot.openNode(getDriverSettingsNodeName());
            if (!aDriverSettings.isValid())
                return;

            OUString sThisDriverName;
            OConfigurationNode aThisDriverSettings;

            const DriverPoolingSettings& rNewSettings = pDriverSettings->getSettings();
            for (auto const& newSetting : rNewSettings)
            {
                // need the name as OUString
                sThisDriverName = newSetting.sName;

                // the sub-node for this driver
                if (aDriverSettings.hasByName(newSetting.sName))
                    aThisDriverSettings = aDriverSettings.openNode(newSetting.sName);
                else
                    aThisDriverSettings = aDriverSettings.createNode(newSetting.sName);

                // set the values
                aThisDriverSettings.setNodeValue(getDriverNameNodeName(), Any(sThisDriverName));
                aThisDriverSettings.setNodeValue(getEnableNodeName(), Any(newSetting.bEnabled));
                aThisDriverSettings.setNodeValue(getTimeoutNodeName(), Any(newSetting.nTimeoutSeconds));
            }
            bNeedCommit = true;
        }
        if (bNeedCommit)
            aConnectionPoolRoot.commit();
    }


}   // namespace offapp


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