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// **********************************************************************
//
// Copyright (c) 2003-2006 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <IceGrid/Internal.h>
#include <IceGrid/QueryI.h>
#include <IceGrid/Database.h>
#include <IceGrid/ObjectCache.h>
#include <IceGrid/SessionI.h>
using namespace std;
using namespace Ice;
using namespace IceGrid;
template<class T>
class GetObjectProxy : public ObjectAllocationRequest
{
typedef IceUtil::Handle<T> TPtr;
public:
GetObjectProxy(const SessionIPtr& session, const TPtr& cb) :
ObjectAllocationRequest(session), _cb(cb)
{
}
virtual void
response(const Ice::ObjectPrx& proxy)
{
assert(_cb);
_cb->ice_response(proxy);
_cb = 0;
}
virtual void
exception(const AllocationException& ex)
{
assert(_cb);
_cb->ice_response(0);
_cb = 0;
}
virtual bool
allocateOnce()
{
return true; // Only allow one allocation
}
private:
TPtr _cb;
};
template<class T> static GetObjectProxy<T>*
newGetObjectProxy(const SessionIPtr& session, const IceUtil::Handle<T>& cb)
{
return new GetObjectProxy<T>(session, cb);
}
QueryI::QueryI(const CommunicatorPtr& communicator, const DatabasePtr& database, const SessionIPtr& session) :
_communicator(communicator),
_database(database),
_session(session)
{
}
QueryI::~QueryI()
{
}
void
QueryI::findObjectById_async(const AMD_Query_findObjectByIdPtr& cb, const Ice::Identity& id, const Ice::Current&) const
{
try
{
if(_session)
{
_database->allocateObject(id, newGetObjectProxy(_session, cb));
}
else
{
cb->ice_response(_database->getObjectProxy(id));
}
}
catch(const NotAllocatableException&)
{
cb->ice_response(0);
}
catch(const ObjectNotRegisteredException&)
{
cb->ice_response(0);
}
}
void
QueryI::findObjectByType_async(const AMD_Query_findObjectByTypePtr& cb, const string& type, const Ice::Current&) const
{
try
{
if(_session)
{
_database->allocateObjectByType(type, newGetObjectProxy(_session, cb));
}
else
{
cb->ice_response(_database->getObjectByType(type));
}
}
catch(const NotAllocatableException&)
{
cb->ice_response(0);
}
catch(const ObjectNotRegisteredException&)
{
cb->ice_response(0);
}
}
void
QueryI::findObjectByTypeOnLeastLoadedNode_async(const AMD_Query_findObjectByTypeOnLeastLoadedNodePtr& cb,
const string& type,
LoadSample sample,
const Ice::Current&) const
{
try
{
if(_session)
{
_database->allocateObjectByTypeOnLeastLoadedNode(type, newGetObjectProxy(_session, cb), sample);
}
else
{
cb->ice_response(_database->getObjectByTypeOnLeastLoadedNode(type, sample));
}
}
catch(const NotAllocatableException&)
{
cb->ice_response(0);
}
catch(const ObjectNotRegisteredException&)
{
cb->ice_response(0);
}
}
void
QueryI::findAllObjectsByType_async(const AMD_Query_findAllObjectsByTypePtr& cb,
const string& type,
const Ice::Current&) const
{
try
{
if(_session)
{
//
// We don't allow allocating multiple objects.
//
cb->ice_response(Ice::ObjectProxySeq());
}
else
{
cb->ice_response(_database->getObjectsByType(type));
}
}
catch(const ObjectNotRegisteredException&)
{
cb->ice_response(Ice::ObjectProxySeq());
}
}
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