On Friday 25 March 2011 01:20:07 Willy Lambert wrote:
> Hi all,
>
> from :
> http://www.orocos.org/stable/documentation/rtt/v2.x/doc-xml/orocos-componen
> ts-manual.html#program-syntax
>
> here I read I have to use this to get a reference on a pre-loaded program :
>
> ProgramInterfacePtr p = dynamic_cast<ScriptingAccess
> <http://www.orocos.org/stable/documentation/rtt/v2.x/api/html/classRTT_1_1s
> cripting_1_1ScriptingAccess.html>*>(this->getService("scripting"))->getProg
> ram("progname");
>
> But this failed to compile, did I missed something ?
>
> [ 8%] Building CXX object
> src/CMakeFiles/arp-hml.dir/can/CanOpenNode.cpp.o
> /media/DD_data/opt/ros/ard/arp_hml/src/can/CanOpenNode.cpp: In
> member function ‘bool HML::CanOpenNode::configureNode()’:
> /media/DD_data/opt/ros/ard/arp_hml/src/can/CanOpenNode.cpp:181:
> error: expected type-specifier before ‘ScriptingAccess’
> /media/DD_data/opt/ros/ard/arp_hml/src/can/CanOpenNode.cpp:181:
> error: expected ‘>’ before ‘ScriptingAccess’
> /media/DD_data/opt/ros/ard/arp_hml/src/can/CanOpenNode.cpp:181:
> error: expected ‘(’ before ‘ScriptingAccess’
> /media/DD_data/opt/ros/ard/arp_hml/src/can/CanOpenNode.cpp:181:
> error: ‘ScriptingAccess’ was not declared in this scope
> /media/DD_data/opt/ros/ard/arp_hml/src/can/CanOpenNode.cpp:181:
> error: expected primary-expression before ‘>’ token
> /media/DD_data/opt/ros/ard/arp_hml/src/can/CanOpenNode.cpp:181:
> error: ‘class HML::CanOpenNode’ has no member named ‘getService’
> /media/DD_data/opt/ros/ard/arp_hml/src/can/CanOpenNode.cpp:181:
> error: expected ‘)’ before ‘;’ token
> make[3]: *** [src/CMakeFiles/arp-hml.dir/can/CanOpenNode.cpp.o] Erreur 1

It's a typo in the manual. It should have been: 'RTT::ScriptingService'
instead of 'ScriptingAccess'. Also, it returns a shared_ptr and getService()
is a function of Service, not of TaskContext:

ProgramInterfacePtr p = 
boost::dynamic_pointer_cast<RTT::scripting::ScriptingService::shared_ptr>(this-
>provides()->getService("scripting"))->getProgram("progname");  

I've updated the manual, it should be updated online shortly...

Peter
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2011/3/25 Willy Lambert <lambert [dot] willy [..] ...>:
> Hi all,
>
> from :
> http://www.orocos.org/stable/documentation/rtt/v2.x/doc-xml/orocos-compo...
>
>
> here I read I have to use this to get a reference on a pre-loaded program :
>
> ProgramInterfacePtr p =
> dynamic_cast<ScriptingAccess*>(this->getService("scripting"))->getProgram("progname");
>
>
> But this failed to compile, did I missed something ?
>
> [ 8%] Building CXX object
> src/CMakeFiles/arp-hml.dir/can/CanOpenNode.cpp.o
> /media/DD_data/opt/ros/ard/arp_hml/src/can/CanOpenNode.cpp: In member
> function ‘bool HML::CanOpenNode::configureNode()’:
>
> /media/DD_data/opt/ros/ard/arp_hml/src/can/CanOpenNode.cpp:181: error:
> expected type-specifier before ‘ScriptingAccess’
> /media/DD_data/opt/ros/ard/arp_hml/src/can/CanOpenNode.cpp:181: error:
> expected ‘>’ before ‘ScriptingAccess’
>
> /media/DD_data/opt/ros/ard/arp_hml/src/can/CanOpenNode.cpp:181: error:
> expected ‘(’ before ‘ScriptingAccess’
> /media/DD_data/opt/ros/ard/arp_hml/src/can/CanOpenNode.cpp:181: error:
> ‘ScriptingAccess’ was not declared in this scope
>
> /media/DD_data/opt/ros/ard/arp_hml/src/can/CanOpenNode.cpp:181: error:
> expected primary-expression before ‘>’ token
> /media/DD_data/opt/ros/ard/arp_hml/src/can/CanOpenNode.cpp:181: error:
> ‘class HML::CanOpenNode’ has no member named ‘getService’
>
> /media/DD_data/opt/ros/ard/arp_hml/src/can/CanOpenNode.cpp:181: error:
> expected ‘)’ before ‘;’ token
> make[3]: *** [src/CMakeFiles/arp-hml.dir/can/CanOpenNode.cpp.o] Erreur 1
>
>

This looks like a namespace issue,

try
using namespace RTT

or put RTT: in front of the ScriptingService

assuming it is in the RTT namespace - it might be a bit better hidden
in e.g. RTT:scripting:

Regards,

Steven