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1 /* |
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2 * Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: The MCoreDbSyncRecoveryHandler provides means to restore the database |
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15 * synchronisation between Speech Recognition DB (SR DB) and VAS DB. |
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16 * |
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17 * Training a new name saves stuff to SR DB. The SaveTag() call saves |
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18 * stuff to VAS DB. If the client decides after training not to save, or |
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19 * battery is removed between training the name and saving it, then the |
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20 * two databases are out of sync. |
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21 * These functions add to VAS DB enough information for proper rollback. |
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22 * If they are called before changing SR DB, the databases will always |
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23 * stay in sync. |
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24 * |
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25 * |
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26 */ |
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27 |
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28 |
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29 #ifndef MNSSCORERECOVERYHANDLER_H |
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30 #define MNSSCORERECOVERYHANDLER_H |
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31 |
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32 class CNssTag; |
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33 |
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34 /** |
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35 * The MNssCoreSrsDBEventHandler provides interface to handle events |
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36 * from Save and Delete utterance data into SRS. |
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37 * |
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38 * @lib NssVasApi.lib |
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39 * @since 2.0 |
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40 */ |
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41 class MNssCoreSyncRecoveryHandler |
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42 { |
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43 public: |
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44 |
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45 /** |
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46 * Recovery functions. |
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47 * These are called, before changing the speech recognition database. |
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48 * They save enough information to clean up and fall back, if: |
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49 * (a) The client changes SR DB, but doesn't save the tag. |
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50 * (b) A crash happens during operation. |
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51 */ |
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52 |
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53 /** |
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54 * Callback |
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55 * @return None |
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56 */ |
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57 virtual void PrepareRecoveryInTraining( const RPointerArray<CNssSpeechItem>& anArray, |
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58 const CNssContext* aContext )=0; |
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59 |
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60 /** |
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61 * Callback |
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62 * @return None |
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63 */ |
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64 virtual void PrepareRecoveryInChanging(const RPointerArray<CNssSpeechItem>& anArray)=0; |
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65 |
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66 /** |
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67 * Callback |
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68 * @return None |
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69 */ |
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70 virtual void PrepareRecoveryInDeleting(const RPointerArray<CNssSpeechItem>& anArray)=0; |
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71 |
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72 |
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73 }; |
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74 |
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75 #endif |