installationservices/swcomponentregistry/inc/screntries.h
branchRCL_3
changeset 65 7333d7932ef7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/installationservices/swcomponentregistry/inc/screntries.h	Tue Aug 31 15:21:33 2010 +0300
@@ -0,0 +1,1105 @@
+/*
+* Copyright (c) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+* Declares entry classes for Software Components Registry interface.
+*
+*/
+
+
+/**
+ @file
+ @publishedAll
+ @released
+*/
+
+#ifndef SCRENTRIES_H
+#define SCRENTRIES_H
+
+#include <e32base.h>
+#include <s32strm.h>
+#include <f32file.h> 
+#include <usif/usifcommon.h>
+
+namespace Usif
+    {
+    // CONSTANTS
+    
+    /**
+        KUnspecifiedLocale means that the locale is not specified and locale resolving will be done by SCR.
+        First, the current locale with its downgraded languages (@see BaflUtils::GetDowngradePathL) is tried 
+        by SCR. If no value is found, then non-localized values are searched for. 
+     */
+    static const TLanguage KUnspecifiedLocale = TLanguage(-1);
+    
+    /**
+        KNonLocalized means that only non-localized values are looked up by SCR.
+     */
+    static const TLanguage KNonLocalized = TLanguage(0); 
+    
+    // CLASSES
+    
+        
+    NONSHARABLE_CLASS(CGlobalComponentId) : public CBase
+    /**
+        Encapsulates the global software component identifier which is a named, component level and nullable string.
+        that an installer may use to specify a deterministic identifier for the component that is unique within 
+        the context of that software type. This global component id would be the package UID for native applications 
+        or the midlet-names for Java etc 
+        
+        The global component id is consistent and equal on all devices. It is used to state dependencies 
+        and to check for the presence of installed software components of arbitrary types without each installer having 
+        to be aware of every other installers naming scheme.        
+     */
+        {
+    public:
+        /**
+            Creates an empty global software component ID object.
+            @return A pointer to the newly allocated global software component ID object, if creation is successful.
+                    The pointer is also put onto the cleanup stack.
+         */
+        IMPORT_C static CGlobalComponentId* NewLC();
+                
+        /**
+            Creates a global software component ID object.
+            @param aGlobalIdName A deterministic identifier for the component that is unique within the context of that software type.
+            @param aUniqueSwTypeName Non-localized unique software type name, such as @see Usif::KSoftwareTypeNative and @see Usif::KSoftwareTypeJava.
+            @return A pointer to the newly allocated global software component ID object, if creation is successful.
+         */ 
+        IMPORT_C static CGlobalComponentId* NewL(const TDesC& aGlobalIdName, const TDesC& aUniqueSwTypeName);
+        
+        /**
+            Creates a global software component ID object.
+            @param aGlobalIdName A deterministic identifier for the component that is unique within the context of that software type.
+            @param aUniqueSwTypeName Non-localized unique software type name, such as @see Usif::KSoftwareTypeNative and @see Usif::KSoftwareTypeJava.
+            @return A pointer to the newly allocated global software component ID object, if creation is successful.
+                    The pointer is also put onto the cleanup stack.
+         */ 
+        IMPORT_C static CGlobalComponentId* NewLC(const TDesC& aGlobalIdName, const TDesC& aUniqueSwTypeName);
+        
+        /**
+            Creates a global software component ID object from a stream.
+            @param aStream The stream to read the software component entry object from
+            @return A pointer to the newly allocated global software component ID object, if creation is successful.
+            @internalComponent
+         */
+        IMPORT_C static CGlobalComponentId* NewL(RReadStream& aStream);
+                
+        /**
+            Externalises this CGlobalComponentId object to a write stream.
+            @param aStream The stream to which the object is externalised.
+            @internalComponent
+         */
+        IMPORT_C void ExternalizeL(RWriteStream& aStream) const;
+                
+        /**
+            Internalises this CGlobalComponentId object from a read stream.
+            @param aStream The stream from which the object is internalised.
+            @internalComponent
+         */
+        IMPORT_C void InternalizeL(RReadStream& aStream);
+                
+        /** @return The global id name part (@see CGlobalComponentId::NewLC) of the global component id.*/
+        IMPORT_C const TDesC& GlobalIdName() const;
+            
+        /** @return The software type name part (@see CGlobalComponentId::NewLC) of the global component id. */
+        IMPORT_C const TDesC& SoftwareTypeName() const;
+        
+        IMPORT_C ~CGlobalComponentId();
+        
+    private:
+        CGlobalComponentId();
+        void ConstructL(const TDesC& aGlobalIdName, const TDesC& aSoftwareTypeName);
+        
+    private:
+        HBufC* iGlobalIdName;       ///< The global id name part of the global component id.
+        HBufC* iSoftwareTypeName;   ///< The software type name part of the global component id.
+        };
+    
+    
+    NONSHARABLE_CLASS(CVersionedComponentId) : public CBase
+    /**     
+        Class that represents a continuous set of versions for a particular component.
+        
+        This class is used for specifying dependencies, where a dependant component requires 
+        specific version(s) of the supplier to be present on the system. The version information 
+        is optional, i.e. this class can be used to represent any version of a component.
+        
+        If this class is used to represent a dependant component, it specifies the range of versions
+        of the dependency relationship defined by the dependant component. 
+     */
+        {
+    public:
+        
+        /**
+            Creates an empty version component identifier object.
+            @return A pointer to the newly allocated version component identifier object, if creation is successful.
+                    The pointer is also put onto the cleanup stack.
+         */
+        IMPORT_C static CVersionedComponentId* NewLC();
+                
+        /**
+            Creates a versioned component identifier object.
+            
+            N.B. The version parameters are optional and used to set the lower and upper limit of the version range. 
+                 It is also possible to set only an upper limit or a lower limit or none. If only one version 
+                 parameter is supplied then a lower limit will be set. In this case, there is no upper limit. 
+                 If the first version parameter is upplied with KNullDesC, then the second version parameter
+                 will be used to set an upper limit.
+            
+            @param aGlobalId The global software component identifier.
+            @param aVersionFrom The first version of the specified version range.
+            @param aVersionTo The last version of the specified version range.
+                    
+            @return A pointer to the newly allocated versioned component identifier object, if creation is successful.
+         */ 
+        IMPORT_C static CVersionedComponentId* NewL(const CGlobalComponentId& aGlobalId, const TDesC* aVersionFrom=NULL, const TDesC* aVersionTo=NULL);
+
+        /**
+            Creates a versioned component identifier object.
+            For more information about the version parameters look at @see CVersionedComponentId::NewLC().
+            
+            @param aGlobalId The global software component identifier.
+            @param aVersionFrom The first version of the specified version range.  
+            @param aVersionTo The last version of the specified version range.
+            
+            @return A pointer to the newly allocated versioned component identifier object, if creation is successful.
+                    The pointer is also put onto the cleanup stack.
+         */ 
+        IMPORT_C static CVersionedComponentId* NewLC(const CGlobalComponentId& aGlobalId, const TDesC* aVersionFrom=NULL, const TDesC* aVersionTo=NULL);
+        
+        /**
+            Creates a versioned component identifier object from a stream.
+            @param aStream The stream to read the versioned component identifier object from
+            @return A pointer to the newly allocated versioned component identifier object, if creation is successful.
+            @internalComponent
+          */
+        IMPORT_C static CVersionedComponentId* NewL(RReadStream& aStream);
+
+        /**
+            Internalises this CVersionedComponentId object from a read stream.
+            @param aStream The stream from which the object is internalised.
+            @internalComponent
+         */
+        IMPORT_C void InternalizeL(RReadStream& aStream);
+        
+        /**
+            Externalises this CVersionedComponentId object to a write stream.
+            @param aStream The stream to which the object is externalised.
+            @internalComponent
+         */
+        IMPORT_C void ExternalizeL(RWriteStream& aStream) const;
+        
+        /** @return The global id of the versioned component. */
+        IMPORT_C const CGlobalComponentId& GlobalId() const;
+        
+        /** @return The first version of the specified version range. NULL, if there is no lower limit for the version range. */
+        IMPORT_C const TDesC* VersionFrom() const;
+        
+        /** @return  The last version of the specified version range. NULL, if there is no upper limit for the version range. */
+        IMPORT_C const TDesC* VersionTo() const;
+        
+        IMPORT_C ~CVersionedComponentId();
+                
+    private:
+        CVersionedComponentId();
+        void ConstructL(const CGlobalComponentId& aGlobalId, const TDesC* aVersionFrom, const TDesC* aVersionTo);
+        
+    private:
+        CGlobalComponentId* iGlobalId;  ///< The global id of the versioned component identifier.
+        HBufC* iVersionFrom;        ///< The first version of the specified version range.
+        HBufC* iVersionTo;      ///< The last version of the specified version range.
+        };
+
+    
+    class CComponentEntry : public CBase
+    /**
+        Class that represents a software component entry stored in the SCR.
+     */
+        {
+        friend class CScrRequestImpl;
+    public:
+        /**
+            Creates an empty software component entry object.
+            @return A pointer to the newly allocated software component object, if creation is successful.
+         */
+        IMPORT_C static CComponentEntry* NewL();
+        
+        /**
+            Creates an empty software component entry object.
+            @return A pointer to the newly allocated software component object, if creation is successful.
+                    The pointer is also put onto the cleanup stack.
+         */
+        IMPORT_C static CComponentEntry* NewLC();
+        
+        /**
+            Creates a software component entry object from a stream.
+            @param aStream The stream to read the software component entry object from
+            @return A pointer to the newly allocated software component entry object, if creation is successful.
+            @internalComponent
+         */
+        IMPORT_C static CComponentEntry* NewL(RReadStream& aStream);
+        
+        /**
+            Creates a software component entry object.
+            
+            @param aId  The unique ID of the software component.
+            @param aName The name of of the software component.
+            @param aVendor The vendor name of the software component.
+            @param aSwType The software type of the component.
+            @param aGlobalId The globally unique identifier of the component.
+            @param aRemovable Whether the component is removable. ETrue means the component is removable.
+            @param aSize The total size of the component at installation time in bytes.
+            @param aScomoState The SCOMO state of the component.
+            @param aInstalledDrives The set of drives that files for the software component were installed to. 
+            @param aVersion The version identifier of the software component.
+            @param aInstallTime The formatted install time string. The format is as following: YYYYMMDD:HHMMSS
+            @param aDrmProtected Whether the component is DRM protected. ETrue means the component is DRM protected.
+            @param aHidden Whether the component is displayed in the list of installed components. ETrue means the component is hidden.
+            @param aKnownRevoked Whether the component has been revoked. ETrue means that a revocation check was
+                                   performed during or after the installation and the component was found to be revoked.
+            @param aOriginVerified Whether the installer has verified the originator of the component. ETrue means the installer 
+                                    has verified the originator of the software component by using appropriate checking mechanisms.
+            @return A pointer to the newly allocated software component object, if creation is successful.
+            @internalComponent
+         */
+        IMPORT_C static CComponentEntry* NewL(const TComponentId& aId, const TDesC& aName, const TDesC& aVendor, const TDesC& aSwType,
+                                              const TDesC& aGlobalId, TBool aRemovable, TInt64 aSize, const TScomoState& aScomoState,
+                                              const TDriveList& aInstalledDrives, const TDesC& aVersion, const TDesC& aInstallTime,
+                                              TBool aDrmProtected, TBool aHidden, TBool aKnownRevoked, TBool aOriginVerified);
+        
+        /**
+            Creates a software component entry object.
+            
+            @param aId  The unique ID of the software component.
+            @param aName The name of of the software component.
+            @param aVendor The vendor name of the software component.
+            @param aSwType The software type of the component.
+            @param aGlobalId The globally unique identifier of the component.
+            @param aRemovable Whether the component is removable. ETrue means the component is removable.
+            @param aSize The total size of the component at installation time in bytes.
+            @param aScomoState The SCOMO state of the component.
+            @param aInstalledDrives The set of drives that files for the software component were installed to. 
+            @param aVersion The version identifier of the software component.
+            @param aInstallTime The formatted install time string. The format is as following: YYYYMMDD:HHMMSS  
+            @param aDrmProtected Whether the component is DRM protected. ETrue means the component is DRM protected.
+            @param aHidden Whether the component is displayed in the list of installed components. ETrue means the component is hidden.
+            @param aKnownRevoked Whether the component has been revoked. ETrue means that a revocation check was
+                                   performed during or after the installation and the component was found to be revoked.
+            @param aOriginVerified Whether the installer has verified the originator of the component. ETrue means the installer 
+                                    has verified the originator of the software component by using appropriate checking mechanisms.
+            @return A pointer to the newly allocated software component object, if creation is successful.
+                           The pointer is also put onto the cleanup stack.
+            @internalComponent
+         */
+        IMPORT_C static CComponentEntry* NewLC(const TComponentId& aId, const TDesC& aName, const TDesC& aVendor, const TDesC& aSwType, 
+                                               const TDesC& aGlobalId, TBool aRemovable, TInt64 aSize, const TScomoState& aScomoState, 
+                                               const TDriveList& aInstalledDrives, const TDesC& aVersion, const TDesC& aInstallTime,
+                                               TBool aDrmProtected, TBool aHidden, TBool aKnownRevoked, TBool aOriginVerified);
+        
+        IMPORT_C ~CComponentEntry();
+        
+        /**
+            Externalises this CComponentEntry object to a write stream.
+            @param aStream The stream to which the object is externalised.
+            @internalComponent
+        */
+        IMPORT_C void ExternalizeL(RWriteStream& aStream) const;
+        
+        /**
+            Internalises this CComponentEntry object from a read stream.
+            @param aStream The stream from which the object is internalised.
+            @internalComponent
+        */
+        IMPORT_C void InternalizeL(RReadStream& aStream);
+        
+        /** @return The unique ID of the software component. */
+        IMPORT_C const TComponentId& ComponentId() const; 
+        
+        /** @return The name of the software component. */
+        IMPORT_C const TDesC& Name() const;
+        
+        /** @return The vendor name of the software component. */
+        IMPORT_C const TDesC& Vendor() const;
+        
+        /** @return The software type name of the software component, e.g @see Usif::KSoftwareTypeNative. */
+        IMPORT_C const TDesC& SoftwareType() const;
+        
+        /** @return Globally unique component identifier. */
+        IMPORT_C const TDesC& GlobalId() const;
+        
+        /** @return Whether the software component is removable. ETrue means it is removable. */
+        IMPORT_C TBool IsRemovable() const;
+        
+        /** @return The total size of the component at installation time in bytes. */
+        IMPORT_C TInt64  ComponentSize() const;
+        
+        /** @return The SCOMO state of the software component. @see Usif::TScomoState */
+        IMPORT_C const TScomoState& ScomoState() const;
+        
+        /** @return The set of drives that files for the software component were installed to. */
+        IMPORT_C const TDriveList& InstalledDrives() const;
+        
+        /** @return The version identifier of the software component. */
+        IMPORT_C const TDesC& Version() const;
+        
+        /** @return The install time of the component. */
+        IMPORT_C TTime InstallTimeL() const;
+        
+        /** @return  Whether the component is DRM protected. ETrue means the component is DRM protected.*/
+        IMPORT_C TBool IsDrmProtected() const;
+        
+        /** @return  Whether the component is hidden in the list of installed components. ETrue means the component is hidden. */
+        IMPORT_C TBool IsHidden() const;
+        
+        /** @return  Whether the component has been revoked. ETrue means that a revocation check was performed
+                  during or after the installation and the component was found to be revoked.
+         */
+        IMPORT_C TBool IsKnownRevoked() const;
+        
+        /** @return  Whether the installer has verified the originator of the component. ETrue means the installer 
+                         has verified the originator of the software component by using appropriate checking mechanisms.
+         */
+        IMPORT_C TBool IsOriginVerified()const;
+        
+    private:
+        CComponentEntry();
+        void ConstructL(const TComponentId& aId, const TDesC& aName, const TDesC& aVendor, const TDesC& aSwType, const TDesC& aGlobalId, TBool aRemovable, 
+                        TInt64 aSize, const TScomoState& aScomoState, const TDriveList& aInstalledDrives, const TDesC& aVersion, const TDesC& aInstallTime,
+                        TBool aDrmProtected, TBool aHidden, TBool aKnownRevoked, TBool aOriginVerified);
+    private:
+        TComponentId iComponentId;   ///< The unique id of the software component.
+        HBufC* iName;                ///< Name of the software component.
+        HBufC* iVendor;              ///< Vendor of the software component.
+        HBufC* iSwType;              ///< Software type name of the component.
+        HBufC* iGlobalId;            ///< Globally unique component identifier.
+        TBool iRemovable;            ///< Whether the component is removable.
+        TInt64 iSize;                ///< The total size of the component at installation time in bytes.
+        TScomoState iScomoState;     ///< SCOMO state of the component.
+        TDriveList iInstalledDrives; ///< The set of drives that files for the software component were installed to.
+        HBufC* iVersion;             ///< Version identifier of the software component
+        HBufC* iInstallTime;         ///< The install time of the component. 
+        TBool iDrmProtected;         ///< Whether the component is DRM protected.
+        TBool iHidden;               ///< Whether the component is hidden in the list of installed components.
+        TBool iKnownRevoked;         ///< Whether the component has been revoked.
+        TBool iOriginVerified;       ///< Whether the installer has verified the originator of the component.
+        };
+        
+    class CPropertyEntry : public CBase
+    /**
+        Abstract base class for a software component property entry. 
+        Specifies the type of a software component property. Before getting a property value, 
+        the base property object must be converted to a derived property object (e.g. CIntPropertyEntry). 
+     */
+        {
+    public:
+    /** 
+        Enumeration to indicate the type of the property.
+     */
+    enum TPropertyType
+        {
+        EBinaryProperty = 1,    ///< The property value is binary data. See @see CBinaryPropertyEntry.
+        EIntProperty,       ///< The property value is integer. See @see CIntPropertyEntry.
+        ELocalizedProperty,  ///< The property is a localizable string. See @see CLocalizablePropertyEntry.
+        };  
+    
+    public:
+        /**
+            Creates a base software component property object from a stream.
+            @param aStream The stream to read the software property object from.
+            @return A pointer to the newly allocated software property object, if creation is successful.
+            @internalComponent
+         */
+        IMPORT_C static CPropertyEntry* NewL(RReadStream& aStream);
+        
+        /** @return The name of the property. */
+        IMPORT_C const TDesC& PropertyName() const;
+        
+        /** Virtual destructor for the component property object*/
+        IMPORT_C virtual ~CPropertyEntry();
+        
+        /**
+            Externalises a base/derived property object to a write stream.
+            @param aStream The stream to which the object is externalised.
+            @internalComponent
+        */
+        IMPORT_C void ExternalizeL(RWriteStream& aStream) const;         
+        
+        /** @return The type of the property object. Implemented by derived classes. */
+        virtual CPropertyEntry::TPropertyType PropertyType() const = 0;
+        
+    protected:
+        CPropertyEntry();
+        void ConstructL(const TDesC& aPropertyName);
+    
+    private:
+        virtual void DoExternalizeL(RWriteStream &aStream) const = 0;
+        virtual void DoInternalizeL(RReadStream& aStream) = 0;
+        
+    private:    
+        HBufC* iPropertyName;         ///< The name of the property entry.
+        };
+    
+    class CIntPropertyEntry : public CPropertyEntry
+    /**
+        Class that represents an integer component property. 
+     */
+        {
+    public:
+        /**
+            Creates an integer component property object.
+            
+            @param aPropertyName The name of the property.
+            @param aPropertyValue The value of the property.
+            @return A pointer to the newly allocated component property object, if creation is successful.
+         */
+        IMPORT_C static CIntPropertyEntry* NewL(const TDesC& aPropertyName, TInt64 aPropertyValue);
+        
+        /**
+            Creates an integer component property object.
+            
+            @param aPropertyName The name of the property.
+            @param aPropertyValue The value of the property.
+            @return A pointer to the newly allocated component property object, if creation is successful.
+                    The pointer is also put onto the cleanup stack.
+         */
+        IMPORT_C static CIntPropertyEntry* NewLC(const TDesC& aPropertyName, TInt64 aPropertyValue);
+        
+        IMPORT_C ~CIntPropertyEntry();
+        
+        /**
+            The implementation of pure virtual function from @see Usif::CPropertyEntry.
+            @return The type of the property object.
+         */
+        IMPORT_C CPropertyEntry::TPropertyType PropertyType() const;
+        
+        /** @return The 32-bit integer value. */ 
+        IMPORT_C TInt IntValue();
+        
+        /** @return The 64-bit integer value. */ 
+        IMPORT_C TInt64 Int64Value();
+        
+    private:
+        void DoExternalizeL(RWriteStream& aStream) const;
+        void DoInternalizeL(RReadStream& aStream);
+        
+        CIntPropertyEntry();
+        CIntPropertyEntry(TInt64 aPropertyIntValue);
+        void ConstructL(const TDesC& aPropertyName);
+        static CIntPropertyEntry* NewLC();
+        friend CPropertyEntry* CPropertyEntry::NewL(RReadStream& aStream);
+        
+    private:
+        TInt64 iIntValue;   ///< The integer property value.
+        };
+    
+    class CBinaryPropertyEntry : public CPropertyEntry
+    /**
+        Class that represents a binary non-localizable 8-bit descriptor component property.     
+    */
+        {
+    public:
+        /**
+            Creates a binary component property object.
+                
+            @param aPropertyName The name of the property.
+            @param aPropertyValue The value of the property.
+            @return A pointer to the newly allocated component property object, if creation is successful.
+         */
+        IMPORT_C static CBinaryPropertyEntry* NewL(const TDesC& aPropertyName, const TDesC8& aPropertyValue);
+        
+        /**
+            Creates a binary component property object.
+                        
+            @param aPropertyName The name of the property.
+            @param aPropertyValue The value of the property.
+            @return A pointer to the newly allocated component property object, if creation is successful.
+                    The pointer is also put onto the cleanup stack.
+         */
+        IMPORT_C static CBinaryPropertyEntry* NewLC(const TDesC& aPropertyName, const TDesC8& aPropertyValue);
+        
+        IMPORT_C ~CBinaryPropertyEntry(); 
+        
+        /**
+            The implementation of pure virtual function from @see Usif::CPropertyEntry.
+            @return The type of the property object.
+         */
+        IMPORT_C TPropertyType PropertyType() const;
+        
+        /** @return The binary property value. */ 
+        IMPORT_C const TDesC8& BinaryValue();
+    
+    private:
+        CBinaryPropertyEntry();
+        void ConstructL(const TDesC& aPropertyName, const TDesC8& aPropertyValue);
+        void DoExternalizeL(RWriteStream& aStream) const;
+        void DoInternalizeL(RReadStream& aStream);
+    
+        static CBinaryPropertyEntry* NewLC();
+        friend CPropertyEntry* CPropertyEntry::NewL(RReadStream& aStream);
+        
+    private:
+        HBufC8* iValue; ///< The value of the binary property.
+        };
+    
+    NONSHARABLE_CLASS(CLocalizablePropertyEntry) : public CPropertyEntry
+    /**
+        Class that represents a localizable string component property.
+        
+        A localized component property is a string property which can have different values 
+        for different locales. A particular instance of a localized component property includes 
+        both the localized string value and the locale in question.
+     */
+        {
+    public:
+        /**
+            Creates a localizable component property object.
+                    
+            @param aPropertyName The name of the property.
+            @param aPropertyValue The value of the property.
+            @param aLocale The locale of the property.
+            @return A pointer to the newly allocated component property object, if creation is successful.
+         */
+        IMPORT_C static CLocalizablePropertyEntry* NewL(const TDesC& aPropertyName, const TDesC& aPropertyValue, TLanguage aLocale);
+        
+        /**
+            Creates a localizable component property object.
+                            
+            @param aPropertyName The name of the property.
+            @param aPropertyValue The value of the property.
+            @param aLocale The locale of the property.
+            @return A pointer to the newly allocated component property object, if creation is successful.
+                    The pointer is also put onto the cleanup stack.
+         */
+        IMPORT_C static CLocalizablePropertyEntry* NewLC( const TDesC& aPropertyName, const TDesC& aPropertyValue, TLanguage aLocale);
+        
+        IMPORT_C ~CLocalizablePropertyEntry();
+        
+        /** The locale of the localizable property object. */
+        IMPORT_C TLanguage LocaleL() const;
+        
+        /**
+            The implementation of pure virtual function from @see Usif::CPropertyEntry.
+            @return The type of the property object.
+         */
+        IMPORT_C TPropertyType PropertyType() const;
+        
+        /** @return The string property value. */
+        IMPORT_C const TDesC& StrValue() const;     
+        
+    private:
+        CLocalizablePropertyEntry();
+        CLocalizablePropertyEntry(TLanguage aLocale);
+        void DoExternalizeL(RWriteStream &aStream) const;
+        void DoInternalizeL(RReadStream& aStream);
+        static CLocalizablePropertyEntry* NewLC();
+        friend CPropertyEntry* CPropertyEntry::NewL(RReadStream& aStream);
+        void ConstructL(const TDesC& aPropertyName, const TDesC& aPropertyValue);
+        
+    private:
+        TLanguage iLocale; ///< The language code of the locale.
+        HBufC* iStrValue; ///< The string value of the property
+        };
+    
+    NONSHARABLE_CLASS(CComponentFilter) : public CBase
+    /**
+        A filter class which is used to filter the software components stored in the SCR.
+        An empty filter object is first created and then required filter keys are set separately.
+     */
+        {
+        friend class CScrRequestImpl;
+    public:
+        
+        enum TDbOperator
+            {
+            EEqual = 1,
+            ELike
+            };
+        
+        /**
+            Creates an empty component filter object.
+            @return A pointer to the newly allocated component filter object, if creation is successful.
+         */
+        IMPORT_C static CComponentFilter* NewL();
+        
+        /**
+            Creates an empty component filter object.
+            @return A pointer to the newly allocated component filter object, if creation is successful.
+                    The pointer is also put onto the cleanup stack.
+         */
+        IMPORT_C static CComponentFilter* NewLC();
+        
+        /**
+            Creates a component filter object from a stream.
+            @param aStream The stream to read the component filter object from
+            @return A pointer to the newly allocated component filter object, if creation is successful.
+            @internalComponent
+         */
+        IMPORT_C static CComponentFilter* NewL(RReadStream& aStream);
+        
+        ~CComponentFilter();
+        
+        /**
+            Restricts the returned component names in the filter.
+            Please note that wildcards are not supported and matching is case-sensitive.
+            @param aName The name of the software component.
+         */
+        IMPORT_C void SetNameL(const TDesC& aName);
+        
+        /**
+            Restricts the returned component vendor names in the filter.
+            Please note that wildcards are not supported and matching is case-sensitive.
+            @param aVendor The vendor name of the software component.
+         */
+        IMPORT_C void SetVendorL(const TDesC& aVendor);
+        
+        /**
+            Restricts the returned component software types in the filter.
+            @param aSwType The software type name of the software component (e.g. @see Usif::KSoftwareTypeNative and @see Usif::KSoftwareTypeJava). 
+        */
+        IMPORT_C void SetSoftwareTypeL(const TDesC& aSwType);
+        
+        /**
+            Sets whether the software component which is being searched for is removable.
+            @param aValue ETrue, if the software component is removable. Otherwise, EFalse.
+         */
+        IMPORT_C void SetRemovable(TBool aValue);
+        
+        /**
+            Sets whether the software component which is being searched for is DRM protected.
+            @param aValue ETrue, if the software component is DRM protected. Otherwise, EFalse.
+         */
+        IMPORT_C void SetDrmProtected(TBool aValue);
+        
+        /**
+            Sets whether the software component which is being searched for is hidden.
+            @param aValue ETrue, if the software component is hidden. Otherwise, EFalse.
+         */
+        IMPORT_C void SetHidden(TBool aValue);
+        
+        /**
+            Sets whether the software component which is being searched for is known-revoked.
+            @param aValue ETrue, if the software component is known-revoked. Otherwise, EFalse.
+         */
+        IMPORT_C void SetKnownRevoked(TBool aValue);
+        
+        /**
+            Sets whether the software component which is being searched for is origin-verified.
+            @param aValue ETrue, if the software component is origin-verified. Otherwise, EFalse.
+         */
+        IMPORT_C void SetOriginVerified(TBool aValue);
+        
+        /**
+            Restricts the returned component SCOMO states in the filter.
+            See @see Usif::TScomoState for the list of SCOMO states.
+            @param aScomoState The SCOMO state of the software component.
+         */
+        IMPORT_C void SetScomoStateL(TScomoState aScomoState);
+        
+        /**
+            Sets the set of drives that files of the software components were installed to.
+            If more than one drive is supplied, all software components which files were installed to
+            any of these drives are returned.
+         */
+        IMPORT_C void SetInstalledDrivesL(const TDriveList& aDrives);
+        
+        /**
+            Adds a localizable property to the filter. Only the software components having 
+            this property with the specified value are returned by the filter. It is possible to 
+            add more than one property. In this case, the software components possessing all provided 
+            properties with the specified values are returned by the filter.
+            
+            For more information about searching for current locale variant of properties look at 
+            @see RSoftwareComponentRegistry::GetComponentPropertyL.
+            
+            If the locale is provided, the component will be returned only if the property exists 
+            for the specified locale. If the locale is not provided, or is equal to KUnspecifiedLocale,
+            then all software components which have the property with the specified value for any locale will
+            match this condition.
+            
+            @param aName The name of the property. Please note that matching is case-insensitive.
+            @param aValue The value of the property.    
+            @param aLocale Optional. The language code of the property value.
+            @param aNameOperator The comparison operator (TDbOperator type) to be associated with the name.
+            @param aValueOperator The comparison operator (TDbOperator type) to be associated with the value.          
+                    
+         */
+        IMPORT_C void AddPropertyL(const TDesC& aName, const TDesC& aValue, TLanguage aLocale=KUnspecifiedLocale, 
+                TDbOperator aNameOperator = EEqual, TDbOperator aValueOperator = EEqual);
+        
+        /**
+            Adds an integer property to the filter. The software components having this
+            property with the specified value are enumerated. It is possible to add more than one property. 
+            In this case, the software components possessing all provided properties with the specified 
+            values are enumerated.
+            
+            @param aName The name of the property. Please note that matching is case-insensitive.
+            @param aValue The value of the property.
+            @param aNameOperator The comparison operator (TDbOperator type) to be associated with the name.
+            @param aValueOperator The comparison operator (TDbOperator type) to be associated with the value.          
+            
+         */
+        IMPORT_C void AddPropertyL(const TDesC& aName, TInt64 aValue, TDbOperator aNameOperator = EEqual, 
+                TDbOperator aValueOperator = EEqual);
+        
+        /**
+            Adds a binary 8-bit descriptor property to the filter. The software components having this
+            property with the specified value are enumerated. It is possible to add more than one property. 
+            In this case, the software components possessing all provided properties with the specified 
+            values are enumerated.
+            
+            @param aName The name of the property. Please note that matching is case-insensitive.
+            @param aValue The value of the property.
+            @param aNameOperator The comparison operator (TDbOperator type) to be associated with the name.
+            @param aValueOperator The comparison operator (TDbOperator type) to be associated with the value.          
+            
+         */
+        IMPORT_C void AddPropertyL(const TDesC& aName, const TDesC8& aValue, TDbOperator aNameOperator = EEqual, 
+                TDbOperator aValueOperator = EEqual);       
+        
+        /**
+            Sets a file name to filter the software components having registered this file.
+            Please note that wildcards are not supported and matching is case-insensitive.
+            
+            N.B. This call can be invoked multiple times for the same filter in order to request components which register a particular set of files.
+            @param aFile The fully qualified file path.
+         */
+        IMPORT_C void SetFileL(const TDesC& aFile);
+        
+        /**
+            Externalises a component filter object to a write stream.
+            @param aStream The stream to which the object is externalised.
+            @internalComponent
+        */
+        IMPORT_C void ExternalizeL(RWriteStream& aStream) const;
+        
+    private:
+        CComponentFilter();
+        void ConstructL();
+        void InternalizeL(RReadStream& aStream);
+        
+        enum TFieldsFlag
+            {
+            EName           = 0x0001,
+            EVendor         = 0x0002,
+            ESoftwareType   = 0x0004,
+            ERemovable      = 0x0008,
+            EScomoState     = 0x0010,
+            EInstalledDrive = 0x0020,
+            EProperty       = 0x0040,
+            EFile           = 0x0080,
+            EDrmProtected   = 0x0100,
+            EHidden         = 0x0200,
+            EKnownRevoked   = 0x0400,
+            EOriginVerified = 0x0800
+            };
+        
+        class TPropertyOperator
+            {
+        public:
+            IMPORT_C TPropertyOperator(TDbOperator aNameOperator = EEqual, TDbOperator aValueOperator = EEqual);
+            void ExternalizeL(RWriteStream& aStream) const;
+            IMPORT_C void InternalizeL(RReadStream& aStream);  
+            IMPORT_C TDbOperator NameOperator() const;
+            IMPORT_C TDbOperator ValueOperator() const;
+        
+        private:
+            TDbOperator iNameOperator;
+            TDbOperator iValueOperator;
+            };
+        
+    private:
+        TUint16 iSetFlag;            ///< Flag variable that shows what fields have been set
+        HBufC* iName;                ///< Name for the software component
+        HBufC* iVendor;              ///< Vendor for the software component
+        HBufC* iSwType;              ///< Software type of the component.
+        TBool iRemovable;            ///< Whether the software component is removable
+        TScomoState iScomoState;     ///< SCOMO state for the software component
+        TDriveList iInstalledDrives; ///< Installed drives for the software component
+        RPointerArray<CPropertyEntry> iPropertyList; ///< The list of key properties
+        HBufC* iFile;               ///< The full name of the file owned by the component
+        TBool iDrmProtected;         ///< Whether the component is DRM protected.
+        TBool iHidden;               ///< Whether the component is displayed in the list of installed components.
+        TBool iKnownRevoked;         ///< Whether the component has been revoked.
+        TBool iOriginVerified;       ///< Whether the installer has verified the originator of the component.
+        RArray<TPropertyOperator> iPropertyOperatorList; ///< The list of operators associated with each property. 
+        };
+
+    
+    class CLocalizableCommonData : public CBase
+    /**
+        Base class which provides common functionality for localized information classes (e.g. CLocalizableComponentInfo). 
+        Please note that this class cannot be instantiated.
+     */
+        {
+    public:
+        ~CLocalizableCommonData();  
+        
+        /** @return The locale of the data. */
+        IMPORT_C TLanguage Locale() const;
+        
+    protected:
+        CLocalizableCommonData();
+        CLocalizableCommonData(TLanguage aLocale);
+        
+        void ExternalizeL(RWriteStream& aStream) const;
+        void InternalizeL(RReadStream& aStream);
+        
+    private:
+        TLanguage iLocale; ///< The language code of the locale.
+        };
+        
+    NONSHARABLE_CLASS(CLocalizableComponentInfo) : public CLocalizableCommonData
+    /**
+        This class contains the localizable information of a software component.
+        Component names and vendor names are localizable names and transferred to the SCR 
+        with the objects of this class.
+     */
+        {
+    public:
+        /**
+            Creates a localizable component information object.
+            @param aName The name of the component.
+            @param aVendor The vendor of the component.
+            @param aLocale The language code of the object's locale.
+            @return A pointer to the newly allocated localizable component info object, if creation is successful.
+         */
+        IMPORT_C static CLocalizableComponentInfo* NewL(const TDesC& aName, const TDesC& aVendor, TLanguage aLocale);
+        
+        /**
+            Creates a localizable component information object.
+            @param aName The name of the component.
+            @param aVendor The vendor of the component.
+            @param aLocale The language code of the object's locale.
+            @return A pointer to the newly allocated component information object, if creation is successful.
+                    The pointer is also put onto the cleanup stack.
+         */
+        IMPORT_C static CLocalizableComponentInfo* NewLC(const TDesC& aName, const TDesC& aVendor, TLanguage aLocale);
+        
+        /**
+            Creates a localizable component information from a stream.
+            @param aStream The stream to read the component information object from.
+            @return A pointer to the newly allocated component information object, if creation is successful.
+            @internalComponent
+         */
+        IMPORT_C static CLocalizableComponentInfo* NewL(RReadStream& aStream);
+        
+        ~CLocalizableComponentInfo();
+        
+        /**
+            Externalises a localizable component information object to a write stream.
+            @param aStream The stream to which the object is externalised.
+            @internalComponent
+         */
+        IMPORT_C void ExternalizeL(RWriteStream& aStream) const;    
+        
+        /** @return The localizable name of the component. */
+        IMPORT_C const TDesC& NameL() const;
+        
+        /** @return The localizable vendor name of the component. */
+        IMPORT_C const TDesC& VendorL() const;
+        
+    private:
+        CLocalizableComponentInfo();
+        CLocalizableComponentInfo(TLanguage aLocale);
+        void ConstructL(const TDesC& aName, const TDesC& aVendor);
+        void InternalizeL(RReadStream& aStream);
+        
+    private:
+        HBufC* iName;      ///< The localizable component name.
+        HBufC* iVendor;    ///< The localizable component vendor name.
+        };
+    
+#ifndef SYMBIAN_ENABLE_SPLIT_HEADERS    
+    NONSHARABLE_CLASS(CLocalizedSoftwareTypeName) : public CLocalizableCommonData
+        /**
+            This class contains localized software type names.
+            Software type names are localizable names and transferred to the SCR 
+            with the objects of this class.
+            
+            @internalTechnology
+         */
+            {
+        public: 
+            /**
+                Creates a localized software type name object.
+                @param aName The name of the software type.
+                @param aLocale The language code of the object's locale.
+                @return A pointer to the newly allocated localized software type name object, if creation is successful.
+             */
+            IMPORT_C static CLocalizedSoftwareTypeName* NewL(const TDesC& aName, TLanguage aLocale);
+            
+            /**
+                Creates a localized software type name object.
+                @param aName The name of the software type.
+                @param aLocale The language code of the object's locale.
+                @return A pointer to the newly allocated localized software type name object, if creation is successful.
+                        The pointer is also put onto the cleanup stack.
+             */
+            IMPORT_C static CLocalizedSoftwareTypeName* NewLC(const TDesC& aName, TLanguage aLocale);
+            
+            /**
+                Creates a localized software type name object from a stream.
+                @param aStream The stream to read the localized software type name object from.
+                @return A pointer to the newly allocated localized software type name object, if creation is successful.
+                @internalComponent
+             */
+            IMPORT_C static CLocalizedSoftwareTypeName* NewL(RReadStream& aStream);
+            
+            ~CLocalizedSoftwareTypeName();
+            
+            /**
+                Externalises a localized software type name object to a write stream.
+                @param aStream The stream to which the object is externalised.
+                @internalComponent
+             */
+            IMPORT_C void ExternalizeL(RWriteStream& aStream) const;    
+            
+            /** @return The localized software type name. */
+            IMPORT_C const TDesC& NameL() const;
+            
+        private:
+            CLocalizedSoftwareTypeName();
+            CLocalizedSoftwareTypeName(TLanguage aLocale);
+            void ConstructL(const TDesC& aName);
+            void InternalizeL(RReadStream& aStream);
+            
+        private:
+            HBufC* iName;      ///< The localized software type name.
+            };
+#endif //SYMBIAN_ENABLE_SPLIT_HEADERS   
+    
+    enum TScrComponentOperationType
+    /**
+        The type of the operation being performed on an SCR component. 
+     */
+        {
+        EScrCompInstall =0,     ///< A new SCR component is added.
+        EScrCompUnInstall,      ///< A existing SCR component is removed.
+        EScrCompUpgrade,        ///< An existing SCR component is updated.
+        EScrCompHidden          ///< The component operation is hidden to the user. N.B. SCR doesn't save logs for this type of operation.
+        };
+    
+    NONSHARABLE_CLASS (CScrLogEntry) : public CBase
+    /**
+        Class that represents a software component log record generated by the SCR.
+     */ 
+        {
+        friend class CScrRequestImpl;
+    public:
+        /**
+            Creates a log entry object.
+            @param aComponentName The name of the component.
+            @param aUniqueSwTypeName The non-localized, unique software type name, such as @see Usif::KSoftwareTypeNative and @see Usif::KSoftwareTypeJava.
+            @param aGlobalId The global Id of the component.
+            @param aVersion The version of the component.
+            @param aCompOpType The type of the component operation. @see Usif::TScrComponentOperationType
+            @return A pointer to the newly allocated log entry object, if creation is successful.
+            @internalComponent
+         */
+        IMPORT_C static CScrLogEntry* NewL(const TDesC& aComponentName, const TDesC& aUniqueSwTypeName, const TDesC& aGlobalId, const TDesC& aVersion, const TScrComponentOperationType aCompOpType);
+        
+        /**
+            Creates a log entry object.
+            @param aComponentName The name of the component.
+            @param aUniqueSwTypeName The non-localized, unique software type name, such as @see Usif::KSoftwareTypeNative and @see Usif::KSoftwareTypeJava.
+            @param aGlobalId The global Id of the component.
+            @param aVersion The version of the component.
+            @param aCompOpType The type of the component operation. @see Usif::TScrComponentOperationType
+            @return A pointer to the newly allocated log entry object, if creation is successful.
+                    The pointer is also put onto the cleanup stack.
+            @internalComponent      
+         */
+        IMPORT_C static CScrLogEntry* NewLC(const TDesC& aComponentName, const TDesC& aUniqueSwTypeName, const TDesC& aGlobalId, const TDesC& aVersion, const TScrComponentOperationType aCompOpType);
+
+        /**
+            Creates a log entry object from a stream.
+            @param aStream The stream to read the log entry object from.
+            @return A pointer to the newly allocated log entry object, if creation is successful.
+                    The pointer is also put onto the cleanup stack.
+            @internalComponent
+        */
+        IMPORT_C static CScrLogEntry* NewLC(RReadStream& aStream);
+        
+        ~CScrLogEntry();
+        
+        /**
+            Write the object to a stream 
+         
+            @param aStream The stream to write to
+            @internalComponent
+         */
+        IMPORT_C void ExternalizeL(RWriteStream& aStream) const;
+         
+        /**
+            Read the object from a stream
+         
+            @param aStream The stream to read from.
+            @internalComponent
+         */
+        IMPORT_C void InternalizeL(RReadStream& aStream) ;
+        
+        /**
+            @return The name of the component for which the log was generated.
+         */
+        IMPORT_C const TDesC& ComponentName() const; 
+        
+        /**
+            @return The non-localized, unique software type name, such as @see Usif::KSoftwareTypeNative and @see Usif::KSoftwareTypeJava.
+         */
+        IMPORT_C const TDesC& SoftwareTypeName() const;
+        
+        /**
+            The UID.
+            @return The global ID of the component.
+         */
+        IMPORT_C const TDesC& GlobalId() const; 
+                
+        /**
+            @return The version of the component.
+         */
+        IMPORT_C const TDesC& ComponentVersion() const; 
+        
+        /**
+            @return The time when the operation occured.
+         */
+        IMPORT_C const TTime OperationTime() const; 
+                
+        /**
+            @return The type of the component operation for the log record.
+         */
+        IMPORT_C TScrComponentOperationType OperationType() const;
+        
+        /**
+            @return The component id of the log record.
+            @internalComponent
+         */
+        IMPORT_C TComponentId ComponentId() const;
+    
+    private:
+        CScrLogEntry();
+        void ConstructL(const TDesC& aComponentName, const TDesC& aUniqueSwTypeName, const TDesC& aGlobalId, const TDesC& aVersion, const TScrComponentOperationType aCompOpType);
+        
+    private:    
+        HBufC* iComponentName ;
+        HBufC* iSwTypeName;
+        HBufC* iVersion;
+        TScrComponentOperationType iOpType ; 
+        TTime  iRecordTime ;   
+        HBufC* iGlobalId;
+        TComponentId iComponentId; 
+        };
+
+    } // End of namespace Usif
+
+#endif // SCRENTRIES_H