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/*
Copyright (C) 2000 Stefan Westerfeld
stefan@space.twc.de
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "dynamicrequest.h"
#include "common.h"
#include "debug.h"
#include <iostream>
using namespace Arts;
using namespace std;
class Arts::DynamicRequestPrivate {
public:
Connection *connection;
Buffer *buffer;
MethodDef method;
Object object;
/**
* methodID is kept between the requests, so that we don't need to lookup
* a method again when it gets called twice - the value for "we need to
* lookup again" is -1, which gets set whenever the current request differs
* from the last
*/
long requestID, methodID, objectID;
unsigned long paramCount;
/**
* constructor
*/
DynamicRequestPrivate(const Object &obj)
: buffer(0), object(obj), methodID(-1)
{
}
};
DynamicRequest::DynamicRequest(const Object& obj)
{
d = new DynamicRequestPrivate(obj);
d->connection = obj._base()->_connection;
d->objectID = obj._base()->_objectID;
}
DynamicRequest::~DynamicRequest()
{
delete d;
}
DynamicRequest& DynamicRequest::method(const string& method)
{
assert(!d->buffer);
// methodID will be set later
d->buffer = Dispatcher::the()->createRequest(d->requestID, d->objectID, 0);
if(d->method.name != method)
{
d->method.name = method;
d->methodID = -1;
}
d->paramCount = 0;
return *this;
}
DynamicRequest& DynamicRequest::param(const AnyConstRef& ref)
{
if(d->paramCount == d->method.signature.size())
{
ParamDef pd;
pd.type = ref.type();
d->method.signature.push_back(pd);
}
else
{
if(d->method.signature[d->paramCount].type != ref.type())
{
d->method.signature[d->paramCount].type = ref.type();
d->methodID = -1;
}
}
d->paramCount++;
ref.write(d->buffer);
return *this;
}
bool DynamicRequest::invoke()
{
AnyRef voidReference;
return invoke(voidReference);
}
bool DynamicRequest::invoke(const AnyRef& returnCode)
{
if(d->method.type != returnCode.type())
{
d->method.type = returnCode.type();
d->methodID = -1;
}
if(d->method.signature.size() != d->paramCount)
d->methodID = -1;
/*
* need to lookup method? (if the requested method is exactly the
* same as the last, we need not, which signigicantly improves performance
*/
if(d->methodID == -1)
{
d->method.signature.resize(d->paramCount);
d->methodID = d->object._lookupMethod(d->method);
if(d->methodID == -1)
{
arts_warning("DynamicRequest: invalid method called");
return false;
}
}
d->buffer->patchLength();
d->buffer->patchLong(16,d->methodID);
d->connection->qSendBuffer(d->buffer);
d->buffer = 0;
Buffer *result =
Dispatcher::the()->waitForResult(d->requestID,d->connection);
if(result)
{
returnCode.read(result);
delete result;
}
return result != 0;
}
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