CatalogDelegate.h

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/*
 * Copyright (c) 2005 Palmsource, Inc.
 * 
 * This software is licensed as described in the file LICENSE, which
 * you should have received as part of this distribution. The terms
 * are also available at http://www.openbinder.org/license.html.
 * 
 * This software consists of voluntary contributions made by many
 * individuals. For the exact contribution history, see the revision
 * history and logs, available at http://www.openbinder.org
 */

#ifndef _STORAGE_CATALOGDELEGATE_H
#define _STORAGE_CATALOGDELEGATE_H

#include <storage/GenericIterable.h>
#include <storage/NodeDelegate.h>

#include <support/ICatalog.h>
#include <support/Locker.h>

#if _SUPPORTS_NAMESPACE
namespace palmos {
namespace storage {
#endif



class BCatalogDelegate : public BNodeDelegate, public BGenericIterable, public BnCatalog
{
public:
    // --------------------------------------------------------------
                                    BCatalogDelegate(   const SContext& context,
                                                        const sptr<IBinder>& base);
protected:
    virtual                         ~BCatalogDelegate();
public:

    virtual lock_status_t           Lock() const;
    virtual void                    Unlock() const;
    inline  SContext                Context() { return BnNode::Context(); }

    virtual SValue                  Inspect(const sptr<IBinder>& caller, const SValue& which, uint32_t flags);


    // --------------------------------------------------------------

            class IteratorDelegate;

    inline  sptr<IIterable>         BaseIterable() const { return m_baseIterable; }

    virtual sptr<GenericIterator>   NewGenericIterator(const SValue& args);


    // --------------------------------------------------------------

    inline  sptr<ICatalog>          BaseCatalog() const { return m_baseCatalog; }

    virtual status_t                AddEntry(const SString& name, const SValue& entry);
    virtual status_t                RemoveEntry(const SString& name);
    virtual status_t                RenameEntry(const SString& entry, const SString& name);
    
    virtual sptr<INode>             CreateNode(SString* name, status_t* err);
    virtual sptr<IDatum>            CreateDatum(SString* name, uint32_t flags, status_t* err);


private:
                                    BCatalogDelegate(const BCatalogDelegate&);
            BCatalogDelegate&       operator=(const BCatalogDelegate&);

            const sptr<IIterable>   m_baseIterable;
            const sptr<ICatalog>    m_baseCatalog;
};

// --------------------------------------------------------------------------


class BCatalogDelegate::IteratorDelegate : public BGenericIterable::GenericIterator
{
public:
    // --------------------------------------------------------------
                                IteratorDelegate(   const SContext& context,
                                                    const sptr<BGenericIterable>& owner);
protected:
    virtual                     ~IteratorDelegate();
public:

    virtual SValue              Inspect(const sptr<IBinder>& caller, const SValue& which, uint32_t flags);
    virtual status_t            StatusCheck() const;


    virtual SValue              Options() const;

    virtual status_t            Next(IIterator::ValueList* keys, IIterator::ValueList* values, uint32_t flags, size_t count);
    virtual status_t            Remove();

    virtual size_t              Count() const;
    virtual size_t              Position() const;
    virtual void                SetPosition(size_t p);

    virtual status_t            ParseArgs(const SValue& args);

    virtual status_t            NextLocked(uint32_t flags, SValue* key, SValue* entry);

private:
            status_t                m_baseError;
            sptr<IIterator>         m_baseIterator;
            sptr<IRandomIterator>   m_baseRandomIterator;
};

// ==========================================================================
// ==========================================================================

#if _SUPPORTS_NAMESPACE
} } // namespace palmos::storage
#endif

#endif // _STORAGE_CATALOGDELEGATE_H

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PalmSource, Inc. © 2005