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