Pool.hxx

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/*
 * Copyright (c) 2004 MUSIC TECHNOLOGY GROUP (MTG)
 *                         UNIVERSITAT POMPEU FABRA
 *
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#ifndef _Pool_hxx_
#define _Pool_hxx_

#include "ScopePool.hxx"
#include "DescriptionScheme.hxx"

namespace CLAM
{
        class DescriptionDataPool : public Component
        {
        public:
                DescriptionDataPool(const DescriptionScheme & scheme)
                        : _scheme(scheme), _scopePools(_scheme.GetNScopes(),(ScopePool*)0)
                {
                        }
                ~DescriptionDataPool();

                void SetNumberOfContexts(const std::string & scopeName, unsigned size)
                {
                        unsigned scopeIndex = _scheme.GetScopeIndex(scopeName);
                        const DescriptionScope & scope = _scheme.GetScope(scopeIndex);
                        _scopePools[scopeIndex] = new ScopePool(scope, size);
                }

                unsigned GetNumberOfContexts(const std::string & scopeName) const
                {
                        unsigned scopeIndex = _scheme.GetScopeIndex(scopeName);
                        CLAM_ASSERT(_scopePools[scopeIndex],
                                ("Getting the size of scope '"+scopeName+"' but it is not populated").c_str());
                        return _scopePools[scopeIndex]->GetSize();
                }

                void Insert(const std::string & scopeName, unsigned pos)
                {
                        unsigned scopeIndex = _scheme.GetScopeIndex(scopeName);
                        CLAM_ASSERT(_scopePools[scopeIndex], "booooo");
                        _scopePools[scopeIndex]->Insert(pos);
                }
                void Remove(const std::string & scopeName, unsigned pos)
                {
                        unsigned scopeIndex = _scheme.GetScopeIndex(scopeName);
                        CLAM_ASSERT(_scopePools[scopeIndex], "booooo");
                        _scopePools[scopeIndex]->Remove(pos);
                }

                void InstantiateAttribute(const std::string & scopeName, const std::string & attributeName)
                {
                        unsigned scopeIndex = _scheme.GetScopeIndex(scopeName);
                        const DescriptionScope & scope = _scheme.GetScope(scopeIndex);
                        scope.GetIndex(attributeName);
                        CLAM_ASSERT(_scopePools[scopeIndex],
                                ("Instantianting '"+scopeName+":"+attributeName+"' but the scope is not yet populated").c_str());
                }
                template <typename AttributeType>
                AttributeType * GetWritePool(const std::string & scopeName, const std::string & attributeName)
                {
                        unsigned scopeIndex = _scheme.GetScopeIndex(scopeName);

                        CLAM_ASSERT(_scopePools[scopeIndex],
                                ("Writting data on '"+scopeName+":"+attributeName+"' but the scope is not yet populated").c_str());

                        return _scopePools[scopeIndex]->template GetWritePool<AttributeType>(attributeName);
                }
                template <typename AttributeType>
                const AttributeType * GetReadPool(const std::string & scopeName, const std::string & attributeName) const
                {
                        unsigned scopeIndex = _scheme.GetScopeIndex(scopeName);

                        CLAM_ASSERT(_scopePools[scopeIndex],
                                ("Reading data from '"+scopeName+":"+attributeName+"' but the scope is not yet populated").c_str());

                        return _scopePools[scopeIndex]->template GetReadPool<AttributeType>(attributeName);
                }
                bool IsInstantiated(const std::string & scopeName, const std::string & attributeName) const
                {
                        unsigned scopeIndex = _scheme.GetScopeIndex(scopeName);
                        if (!_scopePools[scopeIndex]) return false;
                        return _scopePools[scopeIndex]->IsInstantiated(attributeName);
                }
        // Component Interface

                const char * GetClassName() const { return "DescriptionDataPool"; }
                void StoreOn(Storage & storage) const
                {
                        for (unsigned i = 0; i<_scopePools.size(); i++)
                        {
                                XMLComponentAdapter adapter(*(_scopePools[i]), "ScopePool", true);
                                storage.Store(adapter);
                        }
                }
                void LoadFrom(Storage & storage)
                {
                        for (unsigned i = 0; i<_scopePools.size(); i++)
                        {
                                const DescriptionScope & scope = _scheme.GetScope(i);
                                _scopePools[i] = new ScopePool(scope,0);
                                XMLComponentAdapter adapter(*(_scopePools[i]), "ScopePool", true);
                                storage.Load(adapter);
                        }
                }

        private:
                const DescriptionScheme & _scheme;
                typedef std::vector<ScopePool*> ScopePools;
                ScopePools _scopePools;
        };

}


#endif// _Pool_hxx_