/*

 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of "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:  ?Description

 *

 */

#ifndef __CCAINNERQUERY_H__

#define __CCAINNERQUERY_H__

#include <e32base.h>

#include "caentryattribute.h"

//FORWARD DECLARATIONS

class CDesC16ArrayFlat;

class RWriteStream;

class RReadStream;

/**

 * Class represents Content Arsenal query

 */

NONSHARABLE_CLASS( CCaInnerQuery ): public CBase

    {

public:

    enum TSortAttribute

        {

        Name = 1,

        NameDesc,

        CreatedTimestamp,

        CreatedTimestampDesc,

        Default, // default - return items in custom order

        DefaultDesc

        };

    enum TEntryRole

        {

        Item = 0x1,

        Group = 0x2

        };

    /**

     * Destructor.

     */

    virtual ~CCaInnerQuery();

    /**

     * Two-phased constructor.

     * @return The created object.

     */

    IMPORT_C static CCaInnerQuery* NewL();

    /**

     * Two-phased constructor.

     * @return The created object.

     */

    IMPORT_C static CCaInnerQuery* NewLC();

    /**

     * Get query entry array ids. 

     * @return Array od entries' ids to be queried.

     */

    IMPORT_C const RArray<TInt>& GetIds() const;

    /**

     * Sets the ids to be queried, entries to be fetched from storage.

     * @param aArray The array of entries to be fetched.

     */

    IMPORT_C void SetIdsL( const RArray<TInt>& aArray );

    /**

     * Returns the parent id set for the query.

     * @return Id of entry's parent.

     */

    IMPORT_C TInt GetParentId() const;

    /**

     * Sets the parent id to be queried. This will cause returning only entries whose parent ids are aId.

     * @param aId The parent id to be set for the query.

     */

    IMPORT_C void SetParentId( TInt aId );

    /**

     * Returns the child id set for the query.

     * @return Id of entry's child.

     */

    IMPORT_C TInt GetChildId() const;

    /**

     * Sets the child id to be queried. This will cause returning parents of the entry with id aId

     * @param aId The child id to be set for the query.

     */

    IMPORT_C void SetChildId( TInt aId );

    /**

     * Gets the typenames filter set in the query.

     * @return Array of typenames set in this query. 

     */

    IMPORT_C const CDesC16ArrayFlat* GetEntryTypeNames() const;

    /**

     * Sets the typename filter for the query. 

     * @param aArray Sets the typename filter for the query.

     */

    IMPORT_C void SetEntryTypeNames( CDesC16ArrayFlat* aArray );

    /**

     * Reutrns the role of teh queried entries.

     * @return Role filter.

     */

    IMPORT_C TInt GetRole() const;

    /**

     * Sets the role filter for the query.

     * @param The role of which type items should be fetched.

     */

    IMPORT_C void SetRole( TInt aRole );

    /**

     * Gets flags which are on.

     * @return Flags which are on.

     */

    IMPORT_C TUint GetFlagsOn() const;

    /**

     * Sets flags which are on (filter).

     * @param aFlagsOn Flags which are on filter.

     */

    IMPORT_C void SetFlagsOn( TUint aFlagsOn );

    /**

     * Gets flags which are on filter.

     * @return Filter of flags which are on.

     */

    IMPORT_C TUint GetFlagsOff() const;

    /**

     * Sets flags which are off (filter).

     * @param aFlagsOff Flags which are off filter.

     */

    IMPORT_C void SetFlagsOff( TUint aFlagsOff );

    /**

     * The uid filter of the entry to be fetched.

     * @return Uid of entry to be fetched.

     */

    IMPORT_C TUint GetUid() const;

    /**

     * Sets the uid filter.

     * @param aUid Uid filter. Items will be fetched with only the specific uid.

     */

    IMPORT_C void SetUid( TUint aUid );

    /**

     * Specifies the order type in which queried entiries are returned. 

     * @return The sort type of the query.

     */

    IMPORT_C CCaInnerQuery::TSortAttribute GetSort() const;

    /**

     * Sets the sort order to in which items will be returned.

     * @param aSort The sort order to in which items will be returned.

     */

    IMPORT_C void SetSort( CCaInnerQuery::TSortAttribute aSort );

    /**

     * Externalizes to stream.

     * @param aStream Stream to which CCaInnerQuery is externalized.

     */

    IMPORT_C void ExternalizeL( RWriteStream& aStream ) const;

    /**

     * Internalizes from stream.

     * @param aStream Stream from which CCaInnerQuery is internalized.

     */

    IMPORT_C void InternalizeL( RReadStream& aStream );

    /**

     * Sets the maximum amount of entries to be fetched.

     * @param aCount The number of entries to be fetched.

     */

    IMPORT_C void SetCount( TUint aCount );

    /**

     * Gets the maximum amount of entries to be fetched.

     * @return The maximum amount of entries to be fetched.

     */

    IMPORT_C TUint GetCount() const;

    /**

      * Adds attribute to query.

      * @param aKey Attribute key.

      * @param aValue Attribute value.

      */

     IMPORT_C void AddAttributeL( const TDesC& aKey, const TDesC& aValue );

     /**

       * Get attributes array

       * @return attributes array

       */

     IMPORT_C const RCaEntryAttrArray& GetAttributes() const;

private:

    /**

     * Second phased constructor.

     */

    void ConstructL();

    /**

     * Constructor

     */

    CCaInnerQuery();

private:

    // data

    /*

     * Unique identifier of entries. Own

     */

    RArray<TInt> iIds;

    /*

     * Unique identifier of the parent.

     */

    TInt iParentId;

    /*

     * Unique identifier of the child entry.

     */

    TInt iChildId;

    /*

     * Own.

     */

    CDesC16ArrayFlat* iEntryTypeNames;

    /*

     * Entry types.

     */

    TInt iRole;

    /*

     * Flags on.

     */

    TUint iFlagsOn;

    /*

     * Flags off.

     */

    TUint iFlagsOff;

    /*

     * Uid.

     */

    TUint iUid;

    /*

     * Sorting option.

     */

    TUint iSort;

    /*

     * Number of entries to fetch

     */

    TUint iCount;

    /*

     * Attributes array. Own

     */

    RCaEntryAttrArray iAttributes;

    };

#endif // __CCAQUERY_H__