Hello Oleg, 1) I use the axis2c 1.0 libraries and sample as available at this place<http://ws.apache.org/axis2/c/download.cgi> .[1]
2) The sample I am trying out is the yahoo_client.c. The code is here [2] 3) I wrote the same in J. The code is here [3] I have isolated the offending line in a call method. When I invoke this method, J.exe crashes. When debugged from VC, this leads to a function call invocation that is prepared by the various libraries before the call is made. So, an access is made into the J.exe process space that results in a violation. The way I went about the code is like follows: a) Get the yahoo_client.c to work. (It cashes later on some free calls but that I have not yet investigated) b) Write the j version as a translation of dll calls using the declarations as I found fit. For this I looked into the lib files to identify the exported function name and used the header files to deduce the declarations. c) There are no cd errors so far - only a big crash!! (Note: I could have attached files but I am not sure if this mail server accepts attachments. So I have pasted the whole code). Do let me know if you have some ideas that I can try out. Regards, Yuva [1] http://ws.apache.org/axis2/c/download.cgi [2] int main (int argc, char *argv[]) { const axutil_env_t *env = NULL; const axis2_char_t *address = NULL; axis2_endpoint_ref_t* endpoint_ref = NULL; axis2_options_t *options = NULL; const axis2_char_t *client_home = NULL; axis2_svc_client_t* svc_client = NULL; axiom_node_t *payload = NULL; axiom_node_t *ret_node = NULL; axis2_char_t *search_string = NULL; if (argc > 1) { if (!strcmp (argv[1], "-h") || !strcmp (argv[1], "--help")) { print_help (); } else search_string = argv[1]; } env = axutil_env_create_all("yahoo_rest_search.log", AXIS2_LOG_LEVEL_TRACE); address = "http://search.yahooapis.com/WebSearchService/V1/webSearch";; printf ("using endpoint %s \n", address); endpoint_ref = axis2_endpoint_ref_create(env, address); options = axis2_options_create(env); axis2_options_set_to(options, env, endpoint_ref); axis2_options_set_enable_rest(options, env, AXIS2_TRUE); axis2_options_set_http_method(options, env, AXIS2_HTTP_GET); client_home = AXIS2_GETENV("AXIS2C_HOME"); if (!client_home || !strcmp (client_home, "")) client_home = "../.."; /* Create service client */ svc_client = axis2_svc_client_create(env, client_home); if (!svc_client) { printf("Error creating service client, Please check AXIS2C_HOME again\n"); AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI, "Stub invoke FAILED: Error code:" " %d :: %s", env->error->error_number, AXIS2_ERROR_GET_MESSAGE(env->error)); return -1; } /* Set service client options */ axis2_svc_client_set_options(svc_client, env, options); /* adding proxy support */ axis2_svc_client_set_proxy(svc_client,env, "proxy","8080"); /* Build the SOAP request message payload using OM API.*/ payload = build_yahoo_rest_payload (env, search_string); /* Send request */ ret_node = axis2_svc_client_send_receive(svc_client, env, payload); if (ret_node) { format_output (env, ret_node); printf("\necho client invoke SUCCESSFUL!\n"); } else { AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI, "Stub invoke FAILED: Error code:" " %d :: %s", env->error->error_number, AXIS2_ERROR_GET_MESSAGE(env->error)); printf("Yahoo REST client invoke FAILED!\n"); } if (svc_client) { axis2_svc_client_free(svc_client, env); svc_client = NULL; } return 0; } [3] ROOTDIR =: jpath '~user\projects\websvc\' NB. v1 : echo application d=. (<jhostpath ROOTDIR,'lib/') ,&.> cut 'axiom.dll axutil.dllaxis2_engine.dll' 'AXIOM UTILITY ENGINE' =: ('"'&,@],&'" ') L:0 d NB.DEBUG ENGINE =: 'C:\08.Utils\axis2\axis2c- bin-1.0.0-win32\samples\WebServiceSamples\debug\Engine.dll ' NB. AXIOM =: 'C:\08.Utils\axis2\axis2c- bin-1.0.0-win32\samples\WebServiceSamples\debug\Axiom.dll ' cdu =: 1 : '(UTILITY,m)&cd' cde =: 1 : '(ENGINE,m)&cd' cda =: 1 : '(AXIOM,m)&cd' NB. win32 setenv =: 'kernel32 SetEnvironmentVariableA > i *c *c'&cd NB. methods strcmp =: '[EMAIL PROTECTED] > i *c *c' cdu env_create_all =: '[EMAIL PROTECTED] > i *c i' cdu endpoint_ref =: '[EMAIL PROTECTED] > i i *c' cde options_create =: '[EMAIL PROTECTED] > i i' cde options_set_to =: '[EMAIL PROTECTED] > i i i i' cde options_set_enable_rest=: '[EMAIL PROTECTED] > i i i i' cde options_set_http_method =: '[EMAIL PROTECTED] > i i i *c' cde svc_client_create =: '[EMAIL PROTECTED] > i i *c' cde svc_client_set_options=: '[EMAIL PROTECTED] > i i i i' cde svc_client_set_proxy=: '[EMAIL PROTECTED] > i i i *c *c' cde svc_client_send_receive =: '[EMAIL PROTECTED] > i i i i' cde node_create =: '[EMAIL PROTECTED] > i i' cda element_create =: '[EMAIL PROTECTED] > i i i *c i i' cda element_set_text =: '[EMAIL PROTECTED] > i i i *c i' cda NB. enumerations 'L_CRITICAL L_ERROR L_WARNING L_INFO L_DEBUG L_TRACE' =: 0 1 2 3 4 5 'TRUE FALSE' =: 1 0 HTTP_GET =: 'GET' NB. Test evp =: ROOTDIR evv =: 'AXIS_HOME' setenv evv;evp l =: ROOTDIR,'/logs/test_yahoo.log' a =: 'http://search.yahooapis.com/WebSearchService/V1/webSearch' e =: env_create_all l;L_TRACE ep =: endpoint_ref e;a op =: options_create <e options_set_to op;e;ep options_set_enable_rest op;e;TRUE options_set_http_method op;e;HTTP_GET c =: svc_client_create e;ROOTDIR NB. axis2.xml + modules/ + services/ svc_client_set_options c;e;op svc_client_set_proxy c;e;'proxy';'8080' NB. build payload rn =: node_create <e an =: node_create <e qn =: node_create <e re =: element_create e;0;'yahoo_rest_search';0;rn ae =: element_create e;rn;'appid';0;an element_set_text ae;e;'Yahoo Demo';an qe =: element_create e;rn;'query';0;qn element_set_text qe;e;'finance';qn NB. make the call NB. retn =: svc_client_send_receive c;e;rn call =: 3 : 0 try. retn =: svc_client_send_receive c;e;rn catch. smoutput 'error occurred' end. ) On 8/8/07, Oleg Kobchenko <[EMAIL PROTECTED]> wrote: > > You need to be either more specific, or the > general advice is use the debuggers (J and C++) > and trace up to the offending line and observe all > the parameters carefully. This will involve a lot > of crashes and restarts, which is normal. As you > gain more handle over it, you will be constructing the > definitions and preparing parameters that will work > without crashing the first time around. > > Can you privide a few representative code samples > what you are doing? > > > --- Yuvaraj Athur Raghuvir <[EMAIL PROTECTED]> wrote: > > > Hello, > > > > I started the implementation of my own wrapper. Now, almost all the > calls > > are going fine. At the critical point when I have to establish the > > connection and send the message, there is an Access Violation that > brings > > down J environment. I am able to execute the same sequence of calls from > a > > simple client application. > > > > Now, how to debug this access violation? > > > > 1) I have done a simple mapping of pointers to structures as integers. > This > > seems to work because all I do is manage the various pointers - get it > from > > one call and pass it to the other. But is this the right way? > > > > 2) I built the engine in the VC++ Express edition. However, all I get to > > understand if that a certain call causes a access violation in j.exe and > the > > second time J crashes. This is related to invoking a function pointer > buried > > deep in the various pointers I manage from J. > > > > Any clues? > > > > Regards, > > Yuva > > > > p.s: If you need more info on the code I have written, just let me know > and > > I shall paste the code into the mail (the C/C++ working version & my J > > translation) > > > > On 7/18/07, Yuvaraj Athur Raghuvir <[EMAIL PROTECTED]> wrote: > > > > > > Hello, > > > > > > I recently came across Axis2C - a C implementation for Web Service > > > Consumption - developed by Apache (http://ws.apache.org/axis2/c/) > > > > > > Looking at the example clients that comes with the installation, I > think > > > it would be quite straight forward to provide a web service client > facility > > > in J via an addon. > > > > > > Being a novice at DLL integration into J, I was wondering if someone > else > > > is looking into this. > > > > > > I think adding this as another package under JAL would be quite > useful. > > > > > > Let me know. > > > > > > Thanks, > > > Yuva > > > > > > > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > > > > > > ____________________________________________________________________________________ > Park yourself in front of a world of choices in alternative vehicles. > Visit the Yahoo! Auto Green Center. > http://autos.yahoo.com/green_center/ > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
