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1 // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // Notification handling for client requests for notificaiton on database changes |
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15 // |
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16 // |
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17 |
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18 /** |
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19 @file |
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20 @internalTechnology |
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21 */ |
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22 |
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23 |
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24 #if (!defined COMMSDATNOTIFIER_H) |
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25 #define COMMSDATNOTIFIER_H |
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26 |
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27 #include <e32property.h> |
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28 |
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29 namespace CommsDatInternal |
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30 { |
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31 |
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32 using namespace CommsDat; |
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33 |
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34 NONSHARABLE_CLASS(TCommsDatPubSubNotification) |
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35 //@internalComponent |
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36 //@released |
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37 { |
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38 public: |
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39 TCommsDatPubSubNotification(); |
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40 void Set(TUid aUid, TInt aVal); |
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41 public: |
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42 TUid iUid; |
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43 TInt iValue; |
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44 }; |
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45 |
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46 _LIT(KCommsdatNotifierExecutable,"ShimNotifierSvr"); |
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47 /** Commsdat Notifier |
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48 * |
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49 * @internalComponent */ |
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50 class RCommsdatNotifier : public RSessionBase |
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51 { |
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52 public: |
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53 RCommsdatNotifier(); |
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54 TVersion Version() const; |
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55 |
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56 TInt Connect(); |
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57 void RequestNotification(TRequestStatus& aStatus); |
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58 void CancelNotification(TRequestStatus& aStatus); |
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59 void CancelAllNotifications(); |
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60 void Close(); |
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61 private: |
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62 TInt StartNotifierProcess(); |
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63 }; |
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64 |
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65 |
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66 NONSHARABLE_CLASS(CCDNotifier) : public CBase |
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67 /* |
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68 This class records notification requests from clients and completes them when |
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69 own TRequestStatus is completed by storage server. |
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70 |
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71 CommsDat doesn't need to act on the info itself. |
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72 It is just acting as a broker for the client to completely hide the db server. |
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73 |
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74 FUTURE - At the moment CommsDat makes a simple general request for notification on the whole repository. |
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75 Because this is all that Commdb does. It would be good to change this to register for individual areas of change. |
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76 |
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77 This class also publishes notification of changes made to the database by this client process |
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78 where pub/sub notification is required |
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79 */ |
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80 { |
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81 public : |
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82 |
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83 CCDNotifier(CMDBSessionImpl& aOwner); |
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84 |
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85 ~CCDNotifier(); |
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86 |
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87 static CCDNotifier* NewL(CMDBSessionImpl& aOwner); |
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88 |
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89 void ConstructL(); |
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90 |
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91 // Functions to inform clients of commsdat events. |
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92 |
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93 TInt RegisterNotifyL(TRequestStatus& aStatus); |
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94 |
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95 TInt CancelNotify(TRequestStatus& aStatus); |
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96 |
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97 TInt CancelAllNotifications(); |
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98 |
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99 TInt NotifyClients(TInt aEventType); |
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100 |
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101 void SuppressRollBackEvents() |
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102 { |
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103 iSuppressRollBackEvents = ETrue; |
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104 } |
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105 |
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106 // Functions for publish and subscribe notification |
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107 |
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108 void MaybeNotifyChange(TMDBElementId aElementId); |
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109 void MaybeNotifyChangeForDelete(TMDBElementId aElementId, TBool aModemBearerDeleted); |
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110 |
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111 void NotifyAllChanges(); |
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112 |
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113 void ClearPubSubNotifications(); |
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114 |
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115 TUint32 GetNewNumber(TUid aUid); |
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116 |
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117 void ConvertToUid(TMDBElementId aId, TCommsDatPubSubNotification& aNotification); |
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118 |
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119 private : |
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120 |
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121 TBool iSuppressRollBackEvents; |
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122 RArray<TCommsDatPubSubNotification> iNotifications; |
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123 |
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124 RCommsdatNotifier iNotifier; |
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125 |
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126 CMDBSessionImpl& iOwner; |
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127 }; |
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128 |
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129 // |
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130 |
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131 } // namespace CommsDatInternal |
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132 |
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133 #endif //COMMSDATNOTIFIER_H |