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CdbBdbSimpleCache.hh

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#ifndef CDBBDB_SIMPLE_CACHE_HH
#define CDBBDB_SIMPLE_CACHE_HH

// File and Version Information:
//      $Id: CdbBdbSimpleCache.hh,v 1.3 2004/10/21 20:35:52 gapon Exp $

#include "CdbBdb/CdbBdbCache.hh"

#include <oo.h>

#include <string>
#include <map>

/// A simple implementation of the interface to the caching facility
/**
  * This class provides a cache implementation based on std::map for
  * persistent object references of ooRef(ooObj) type.
  *
  * @see class CdbBdbCache
  */
class CdbBdbSimpleCache : public CdbBdbCache< ooRef(ooObj) > {

public:

  /// Default constructor

    CdbBdbSimpleCache( );

  /// Destructor

    virtual ~CdbBdbSimpleCache( );

  /// Add a new element to the cache
  /**
    * Implements the corresponding method at the base class.
    *
    * @see CdbBdbCache::addObject()
    */
    virtual void addObject( const ooRef(ooObj)& theKeyRef,
                            const ooRef(ooObj)& theValueRef );

  /// Find an object at the cache
  /**
    * Implements the corresponding method at the base class.
    *
    * @see CdbBdbCache::findObject()
    */
    virtual ooRef(ooObj) findObject( const ooRef(ooObj)& theKeyRef ) const;

  /// Create an iterator for keys stored at the cache
  /**
    * Implements the corresponding method at the base class.
    *
    * @see CdbBdbCache::iterator()
    */
    virtual CdbItr<ooRef(ooObj)> iterator( ) const;

public:

  /// Translate an OID into a string
  /**
    * This method is used to produce dictionary keys from OID-s.
    */
    static std::string refToString( const ooRef(ooObj)& theRef );

  /// Translate a string into an OID
  /**
    * This method is used by the iterator of keys to retirn OID-s instead of strings.
    */
    static ooRef(ooObj) stringToRef( const std::string& theString );

private:

  // Data members

    std::map<std::string, ooRef(ooObj)>* _dict;
};

#endif /* CDBBDB_SIMPLE_CACHE_HH */

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