metadataengine/server/inc/mdsnamespacedef.h
changeset 0 c53acadfccc6
child 15 3cebc1a84278
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     1 /*
       
     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:  Class to hold description about one namespace and every objects,
       
    15 *                properties and events it holds.
       
    16 *
       
    17 */
       
    18 
       
    19 #ifndef __MDSNAMESPACE_H__
       
    20 #define __MDSNAMESPACE_H__
       
    21 
       
    22 #include <e32base.h>
       
    23 #include <s32file.h>
       
    24 
       
    25 #include "mdsitemdef.h"
       
    26 
       
    27 class CMdsObjectDef;
       
    28 class CMdsEventDef;
       
    29 class CMdsRelationDef;
       
    30 class CMdCSerializationBuffer;
       
    31 class CMdsPropertyDef;
       
    32 class CMdsSchema;
       
    33 
       
    34 /**
       
    35  *  Metadata namespace class
       
    36  *
       
    37  *  This class is responsible for holding information about everything
       
    38  *  which namespace can contain (name, objects, event, relations)
       
    39  *
       
    40  */
       
    41 class CMdsNamespaceDef : public CMdsItemDef
       
    42     {
       
    43     friend class CMdsSchema;
       
    44     friend class CMdsImportExport;
       
    45 
       
    46 public:
       
    47 	/**
       
    48 	 * Create new namespace object
       
    49 	 * @param aId id of namespace
       
    50 	 * @param aName name of namespace
       
    51 	 * @param aReadOnly read-only namespace flag
       
    52 	 * @return pointer to new created namespace
       
    53 	 */
       
    54     static CMdsNamespaceDef* NewL( TDefId aId, const TDesC& aName, TBool aReadOnly,
       
    55     		TUint32 aVendorId );
       
    56 
       
    57 	/**
       
    58 	 * Create new namespace object
       
    59 	 * @param aId id of namespace
       
    60 	 * @param aName name of namespace
       
    61 	 * @param aReadOnly read-only namespace flag
       
    62 	 * @return pointer to new created namespace
       
    63 	 */
       
    64     static CMdsNamespaceDef* NewLC( TDefId aId, const TDesC& aName, TBool aReadOnly,
       
    65     		TUint32 aVendorId );
       
    66 
       
    67     virtual ~CMdsNamespaceDef();
       
    68 
       
    69 	inline TBool GetReadOnly() const;
       
    70 
       
    71 	inline TBool GetFirstRead() const;
       
    72 
       
    73 	inline void UnsetFirstRead();
       
    74 
       
    75 	inline void SetBaseObject( CMdsObjectDef* const aBaseObject );
       
    76 
       
    77 	inline TInt32 GetVendorId() const;
       
    78 
       
    79 	inline void SetVendorId(TInt32 aVendorId);
       
    80 
       
    81 	/**
       
    82 	 * Add object to namespace and return pointer to it,
       
    83 	 * if object already exist function leaves with KErrAlreadyExists
       
    84 	 * @param objName name of the object definition
       
    85 	 * @param parName name of the object parent
       
    86 	 * @return pointer to new object definition or leave with error
       
    87 	 */
       
    88 	CMdsObjectDef* AddObjectDefL( const TDesC& aObjectName, const TDesC& aParentName, CMdsSchema* aDefaultSchema );
       
    89 	
       
    90 	/**
       
    91 	 * Add relation to array
       
    92 	 * @param relName name of relation
       
    93 	 */
       
    94 	void AddRelationDefL( const TDesC& aRelationName );
       
    95 	
       
    96 	/**
       
    97 	 * Add event to event array
       
    98 	 * @param objName name of event
       
    99 	 * @param aPriority priority of event
       
   100 	 */
       
   101 	void AddEventDefL( const TDesC& aEventName, TInt32 aPriority );
       
   102 	
       
   103 	/**
       
   104 	 * Gets object def by object def id.
       
   105 	 * @param aId objectdef id
       
   106 	 * @return a pointer to object definition
       
   107 	 */
       
   108 	const CMdsObjectDef* GetObjectByIdL( TDefId aId ) const;
       
   109 	
       
   110 	/**
       
   111 	 * Gets event def by devent def id.
       
   112 	 * @param aId eventdef id
       
   113 	 * @return a pointer to event definition
       
   114 	 */
       
   115 	const CMdsEventDef* GetEventByIdL( TDefId aId ) const;
       
   116 	
       
   117 	/**
       
   118 	 * Gets relation def by relation def id.
       
   119 	 * @param aId relationdef id
       
   120 	 * @return a pointer to relation definition
       
   121 	 */
       
   122 	const CMdsRelationDef* GetRelationByIdL( TDefId aId ) const;
       
   123 	
       
   124 	/**
       
   125 	 * Gets property def by property def id.
       
   126 	 * @param aId property id
       
   127 	 * @return a pointer to relation property
       
   128 	 */
       
   129 	const CMdsPropertyDef* GetPropertyL( TDefId aId ) const;
       
   130 	
       
   131 	/**
       
   132 	 * Import object, event and relation defs from default DB.
       
   133 	 */
       
   134 	void ImportFromDBL();
       
   135 	
       
   136 	/**
       
   137 	 * Adds new object definition to DB.
       
   138 	 * @param aId object def id
       
   139 	 * @param aParentId parent object def id
       
   140 	 * @param aFlags flags for the new object
       
   141 	 * @param aName new object def name
       
   142 	 */
       
   143 	void AddObjectDefL( TDefId aId, TDefId aParentId, TInt aFlags, const TDesC& aName );
       
   144 	
       
   145 	/**
       
   146 	 * Adds new relation definition to DB.
       
   147 	 * @param aId relation def id
       
   148 	 * @param aRelationName new relation name
       
   149 	 */
       
   150 	void AddRelationDefL( TDefId aId, const TDesC& aRelationName );
       
   151 	
       
   152 	/**
       
   153 	 * Adds new event definition to DB.
       
   154 	 * @param aId event def id
       
   155 	 * @param aEventName new event name
       
   156 	 * @param aPriority
       
   157 	 */
       
   158 	void AddEventDefL( TDefId aId, const TDesC& aEventName, TInt32 aPriority );
       
   159 	
       
   160     /**
       
   161      * Get required size of serialized buffer when this is serialized.
       
   162      *
       
   163      * @return required size of serialized buffer
       
   164      */
       
   165     TUint32 RequiredBufferSize();
       
   166 
       
   167     /**
       
   168      * Serialize own data to serialized buffer (correct position must be set 
       
   169      * before calling) and return new position of serialized buffer.
       
   170 	 *
       
   171      * @param aBuffer  serialized buffer.
       
   172      */
       
   173     TMdCOffset SerializeL(CMdCSerializationBuffer& aBuffer, TMdCOffset aFreeSpace);
       
   174     
       
   175 	/**
       
   176 	 * Search for relation, using name
       
   177 	 * @param objName name of object to search for
       
   178 	 * @return pointer to found object or NULL
       
   179 	 */
       
   180 	CMdsRelationDef* GetRelationDef( const TDesC& aRelationName ) const;
       
   181 
       
   182 	/**
       
   183 	 * Search for event, using name
       
   184 	 * @param objName name of object to search for
       
   185 	 * @return pointer to found object or NULL
       
   186 	 */
       
   187 	CMdsEventDef* GetEventDef( const TDesC& aEventName ) const;
       
   188 
       
   189 	/**
       
   190 	 * Search for object, using name
       
   191 	 * @param objName name of object to search for
       
   192 	 * @return pointer to found object or NULL
       
   193 	 */
       
   194 	CMdsObjectDef* GetObjectDef( const TDesC& aObjectName ) const;
       
   195 
       
   196 
       
   197 private:
       
   198 
       
   199 	/**
       
   200 	 * default constructor
       
   201 	 */
       
   202     inline CMdsNamespaceDef( TDefId aId, TBool aReadOnly,
       
   203     		                 TUint32 aVendorId );
       
   204 
       
   205 	/**
       
   206 	 * Second phase constructor
       
   207 	 * @param aName name of namespace
       
   208 	 */
       
   209     void ConstructL( const TDesC& aName );
       
   210 
       
   211 	void StoreToDBL(TBool aStoreOnlyNamespace = EFalse );
       
   212 	void MergeObjectsL( CMdsNamespaceDef* aNamespace, const TBool& aDryRun );
       
   213 	void MergeRelationsL( CMdsNamespaceDef* aNamespace, const TBool& aDryRun );
       
   214 	void MergeEventsL( CMdsNamespaceDef* aNamespace, const TBool& aDryRun );
       
   215 
       
   216 private:
       
   217 enum TNamespaceDefFlags
       
   218 	{
       
   219 	ENamespaceDefFlagsReadOnly  = 0x0001,
       
   220 	ENamespaceDefFlagsFirstRead = 0x0002,
       
   221 	};
       
   222 
       
   223 private:
       
   224     /**
       
   225      * Store every namespace read from schema file.
       
   226      */
       
   227 	RPointerArray<CMdsObjectDef> iObjectDefs;
       
   228 
       
   229    /**
       
   230      * Store every namespace read from schema file.
       
   231      */
       
   232 	RPointerArray<CMdsEventDef> iEventDefs;
       
   233 
       
   234    /**
       
   235      * Store every namespace read from schema file.
       
   236      */
       
   237 	RPointerArray<CMdsRelationDef> iRelationDefs;
       
   238 
       
   239 	TInt32 iVendorId;
       
   240 
       
   241 	/**
       
   242 	 * Namespace flags: readOnly, firstRead
       
   243 	 */
       
   244 	TUint32 iFlags;
       
   245 
       
   246 	/**
       
   247 	 * Pointer to base object
       
   248 	 * DO NOT DELETE, NOT OWN !!!
       
   249 	 */
       
   250 	static CMdsObjectDef* iBaseObject;
       
   251     };
       
   252 
       
   253 #include "mdsnamespacedef.inl"
       
   254 
       
   255 #endif // __MDSNAMESPACE_H__