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# RefTable.h

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    00001 // $Header: /local/reps/Gaudi/GaudiKernel/GaudiKernel/RefTable.h,v 1.6 2006/02/06 13:22:20 hmd Exp $
    00002 #ifndef GAUDIKERNEL_REFTABLE_H
    00003 #define GAUDIKERNEL_REFTABLE_H 1
    00004
    00005
    00006 // Include files
    00007 #include "GaudiKernel/Kernel.h"
    00008 #include "GaudiKernel/DataObject.h"
    00009 #include "GaudiKernel/StreamBuffer.h"
    00010 #include "GaudiKernel/SmartRefVector.h"
    00011 #include "GaudiKernel/SmartRef.h"
    00012 #include "GaudiKernel/HashMap.h" // Cannot use maps through sharable images....
    00013
    00014 // Externals
    00015 static const CLID CLID_RefTable1to1 = 300;
    00016 static const CLID CLID_RefTable1toN = 301;
    00017
    00018
    00019 //------------------------------------------------------------------------------
    00020 //
    00021 // Implementation and definition of template classes
    00022 // RefTableBase, RefTable1to1, RefTable1toN
    00023 //
    00024 // Author                  :  Markus Frank
    00025 //
    00026 //------------------------------------------------------------------------------
    00046 template <class FROM, class MAPENTRY> class RefTableBase : public DataObject    {
    00047 public:
    00048   // Type of the key
    00049   typedef FROM                                      KeyType;
    00050   // Type of map entries
    00051   typedef MAPENTRY                                  EntryType;
    00052   // My own type
    00053   typedef RefTableBase<FROM, EntryType>             BaseType;
    00057   typedef GaudiUtils::HashMap< const void* , EntryType >      TableType;
    00059   typedef TableType::iterator       iterator;
    00061   typedef TableType::const_iterator const_iterator;
    00063   CLID       m_clid;
    00064 private:
    00066   TableType  m_table;
    00071   SmartRef<KeyType> m_fromRef;
    00072
    00073 protected:
    00075   bool insertMapElement ( const KeyType* from, EntryType& to )    {
    00076     return m_table.insert( from, to );
    00077   }
    00079   EntryType* i_reference(const KeyType* from)  {
    00080     iterator i = m_table.find( from );
    00081     if ( i != 0 )    {
    00082       return &((*i).second);
    00083     }
    00084     return 0;
    00085   }
    00087   const EntryType* i_reference(const KeyType* from)  const  {
    00088     const_iterator i = m_table.find( from );
    00089     if ( i != m_table.end() )    {
    00090       return &((*i).second);
    00091     }
    00092     return 0;
    00093   }
    00094
    00095 public:
    00097   RefTableBase(const CLID& clid, int len) : m_clid(clid), m_table(len)   {
    00098   }
    00100   virtual ~RefTableBase()  {
    00101     clear();
    00102   }
    00104   virtual void clear()    {
    00105     m_table.clear();
    00106   }
    00108   iterator begin()   {
    00109     return m_table.begin();
    00110   }
    00112   const_iterator begin()  const  {
    00113     return m_table.begin();
    00114   }
    00116   iterator end()   {
    00117     return m_table.end();
    00118   }
    00120   const_iterator end()  const  {
    00121     return m_table.end();
    00122   }
    00124   long size()   const   {
    00125     return m_table.size();
    00126   }
    00128   void reserve(int len)   {
    00129     m_table.reserve(len);
    00130   }
    00132   virtual StreamBuffer& serialize( StreamBuffer& s ) const   {
    00133     DataObject::serialize(s) << m_table.size();
    00134     //for (TableType::const_iterator i = m_table.begin(), stop = m_table.end(); i != stop; i++ )    {
    00135     //  SmartRef<KeyType> fromRef;
    00136     //  fromRef = (KeyType*)(*i).first;
    00137     //  s << fromRef(this);
    00138     //  s << (*i).second(this);
    00139     //}
    00140     return s;
    00141   }
    00143   virtual StreamBuffer& serialize( StreamBuffer& s )         {
    00144     long siz;
    00145     DataObject::serialize(s) >> siz;
    00146     m_table.reserve(siz);
    00147     //for ( long i = 0; i < siz; i++ )   {
    00148     //  SmartRef<KeyType> fromRef;
    00149     //  EntryType entry;
    00150     //  s >> fromRef(this);
    00151     //  s >> entry(this);
    00152     //  insertMapElement( fromRef, entry);
    00153     //}
    00154     return s;
    00155   }
    00156 };
    00157
    00158 template <class FROM, class TO> class RefTable1to1
    00159 : public RefTableBase< FROM , SmartRef<TO> >    {
    00160 public:
    00162   RefTable1to1 (const CLID& clid, int len=16)
    00163   : RefTableBase< FROM , SmartRef<TO> >(clid, len)
    00164   {
    00165   }
    00167   virtual ~RefTable1to1()   {
    00168   }
    00170         virtual const CLID& clID() const  {
    00171     return m_clid;
    00172   }
    00174   bool insert ( const FROM* from, TO* to )    {
    00175     return insertMapElement(from, EntryType(to));
    00176   }
    00178   bool insert ( const FROM* from, const EntryType& to)    {
    00179     // We MUST check the environment of the smart pointer!
    00180     if ( 0 != to.data() || StreamBuffer::INVALID != to.hintID() )    {
    00181       return insertMapElement(from, EntryType(to));
    00182     }
    00183     return false;
    00184   }
    00186   TO* reference(const FROM* from)  {
    00187     EntryType* e = i_reference(from);
    00188     return (0 == e) ? 0 : (*e);
    00189   }
    00190
    00192   const TO* reference(const FROM* from)  const {
    00193     const EntryType* e = i_reference(from);
    00194     return (0 == e) ? 0 : (*e);
    00195   }
    00196
    00198   bool isReferenced(const FROM* from, const TO* to )   {
    00199     const EntryType* e = i_reference(from);
    00200     return (e == 0) ? false : ((*e) == to);
    00201   }
    00203   bool isReferenced(const FROM* from, const EntryType& to )   {
    00204     const EntryType* e = i_reference(from);
    00205     return (assoc!=0) ? ((*e)=!to) ? (e->target()==to.target()) : false : false;
    00206   }
    00207 };
    00208
    00209 template <class FROM, class TO> class RefTable1toN
    00210 : public RefTableBase< FROM , SmartRefVector<TO> >    {
    00211 public:
    00213   RefTable1toN (const CLID& clid, int len=16)
    00214   : RefTableBase< FROM , SmartRefVector<TO> >(clid, len)    {
    00215   }
    00217   virtual ~RefTable1toN()   {
    00218   }
    00220         virtual const CLID& clID() const  {
    00221     return m_clid;
    00222   }
    00224   bool insert ( const FROM* from, TO* to)    {
    00225     EntryType* entry = i_reference(from);
    00226     if ( 0 == entry )   {
    00227       bool result = insertMapElement(from, EntryType());
    00228       EntryType* newEntry = i_reference(from);
    00229       if ( !( 0 == newEntry) )    {
    00230         newEntry->push_back( SmartRef<TO>(to) );
    00231         return true;
    00232       }
    00233       return false;
    00234     }
    00235     entry->push_back( SmartRef<TO>(to) );
    00236     return true;
    00237   }
    00239   bool insert ( const FROM* from, const SmartRef<TO>& to)    {
    00240     EntryType* entry = i_reference(from);
    00241     if ( 0 == entry )   {
    00242       bool result = insertMapElement(from, EntryType());
    00243       EntryType* newEntry = i_reference(from);
    00244       if ( !(0 == newEntry) )    {
    00245         newEntry->push_back( to );
    00246         return true;
    00247       }
    00248       return false;
    00249     }
    00250     entry->push_back( to );
    00251     return true;
    00252   }
    00254   bool insert ( const FROM* from, const EntryType& to)    {
    00255     return insertMapElement(from, const_cast<EntryType&>(to));
    00256   }
    00258   EntryType& reference(const FROM* from)  {
    00259     static EntryType empty;
    00260     EntryType* e = i_reference(from);
    00261     return (0 == e) ? empty : *e;
    00262   }
    00264   const EntryType& reference(const FROM* from)  const {
    00265     static EntryType empty;
    00266     EntryType* e = i_reference(from);
    00267     return (0 == e) ? empty : (*e);
    00268   }
    00270   bool isReferenced(const FROM* from, const EntryType& to )   {
    00271     const EntryType* e = i_reference(from);
    00272     return (0 == e) ? false : (*e == to);
    00273   }
    00275   bool isReferenced(const FROM* from, const TO* to )   {
    00276     return isReferenced(from, SmartRef<TO>(to));
    00277   }
    00279   bool isReferenced(const FROM* from, const SmartRef<TO>& to )   {
    00280     const EntryType* e = i_reference(from);
    00281     if ( 0 != assoc )   {
    00282       SmartRefVector<TO>::const_iterator i = std::find(e->begin(), e->end(), to);
    00283       return (i == e->end()) ? false : true;
    00284     }
    00285     return false;
    00286   }
    00287 };
    00288
    00289
    00290 #endif // GAUDIKERNEL_REFTABLE_H
    00291