Extracting method names from JNI probes

Hello.
I would like to use the Call* probes from the hotspot_jni provider. These probes provide as argument a "method id". My question is how I can extract, for instance, the method name from this ID. I saw that JNI provides a method "GetMethodName" but being a dtrace novice, I am unsure how to obtain a handle to the JNI api from within dtrace.
Any hint would be greatly appreciated.
Best wishes,
Eric

Actually, it can be done. Otherwise, how do you think debugger shows variables and formal parameters?
You should compile your aplication with debuginng information (for details see tools doc). Then you have 3 options:
1) run application under debugger and use JVMDI to get everything you want;
2) use bytecode libraries (BCEL, CGLib etc) to read class file and fetch required information through their API
3) write your own class file parser based on class file format described in Java Virtual Machine Specification
First way is quite complex and is definitely not for "production use".
Second way is the best in case you have time limitations, but size of your application will be increased because of thrid-party libraries.
Thrid way is the best if you have application size restrictions and have enough time to write simple class file parser to fetch that specific information (1-2 days depending on your experience).
Have fun ;)

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HI ,
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meenaalenoor wrote:
I am storing method names in a properties file . Can any one tell me , how can I invoke those methods?
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Please tell me how to invoke method which is represented by the String "methodTobeInvoked" in the below program.
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     public void setName(String name) {
          this.name = name;
     public static void main(String[] args) {
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Post Author: gronkette
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If I have the followng list:
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Post Author: gronkette
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When I use the Split function with [2]..... I get the following error:
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I would like to be able to have te names of some classes. So I will be able to add new classes without changing other classes. I'm writing an application where I explain different kinds of sorting algorithms. I would like to be able to make a list of algorithms that are implemented. And also it should be no problem to add new algoritms. Each algorithm is in another class with a name that's related to their original name. It would be easy that when someone adds a new algorithm, he/she only have to implement a new class without looking at the other classes.
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I would like to be able to have te names of some
classes. So I will be able to add new classes
without changing other classes.Huh? What keeps you from simply doing it?
I'm writing an
application where I explain different kinds of
sorting algorithms. I would like to be able to make
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Re: Method name and/or line number available from withinForte?

To my knowledge there is no such capability with forte, and for sure it
would be nice. Short
of storing all that metadata at runtime, a compile-time substitution such
as is done with
most C preprocessors would work as well.
However, I believe the solution you've identified falls short in a deployed
fashion - I think
all that method name/line number stuff is only available from the workshop...
-J
At 02:54 PM 10/27/98 -0600, [email protected] wrote:
I'm sure this question has been asked many times, but I don't know that I've
ever heard the answer. Is there any way from Forte to access the method
name of the currently executing method? What about the current line number?
I'm sure you all know what I'm getting at by now -- when raising your own
custom exceptions or logging messages we'd like to be able to not hard-code
method names and line numbers into them. I know these are available with
log flags so this information is stored somewhere -- is there an API to
access it on an agent, the task, or the environment? The only way I can
think of doing this (which is not-so-elegant) is to force a Forte exception
to be raised (like access a method on a null TextData or something), then
immediately catch it and extract the method and line number from it. Is
there a more elegant way?
-J.C.
J.C. Hamlin, Senior Consultant, Forte National Practice
Born Information Services Group, Wayzata, MN
Ph: (612) 404-4000 Ph2: (612) 783-8270 FAX: (612) 404-4441
<[email protected]> <[email protected]>
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Sage IT Partners, Inc.
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Method task.TraceBack () returns a string suitable for shoving on the error
stack, and representing a call trace. The method
method TomW_RaiseException.RaiseException
begin
ge : GenericException = New ();
ge.SetWithParams (SP_ER_USER, task.TraceBack ());
task.ErrorMgr.AddError (ge);
Raise ge;
end method;
produces the following when called from the display method of the window in
which it is embedded.
USER ERROR:
Traceback:
TomW_RaiseException.RaiseException at line 2
TomW_RaiseException.Display at line 4
TomW_RaiseException. at offset 13
C++ Method(s)
UserApp.Run at offset 96
Class: qqsp_Exception
Last TOOL statement: method TomW_RaiseException.RaiseException, line 3
Error Time: Wed Oct 28 08:28:34
Exception occurred (locally) on partition "TomW_Test_CL0_Client",
(partitionId = AA6475E0-3DD2-11D2-B582-04228BFFAA77:0x117f:0x6,
taskId =
[AA6475E0-3DD2-11D2-B582-04228BFFAA77:0x117f:0x6.34]) in application
"FTLaunch_cl0", pid 195 on node SPNMXSHOP7 in environment SFDEVL.
I suppose that a sufficiently determined person could parse the results of
TraceBack () and extract the
method and line from it. But I know of no method that explicitly returns
the name of the calling method.
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'unsubscribe forte-users' as the body of the message.
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Using oc4j to generate interfaces from wsdl produced improper method names

The method names that were produced from the opperations in my WSDL, generated an interface file with incorrect method names. The name went from "DoTest" in the wsdl to "doTest" in the Interface file.
I double checked and all the cases are correct in the wsdl.
<?xml version="1.0" encoding="UTF-8"?>

<definitions xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" xmlns:y="http://localhost/TestService" targetNamespace="http://localhost/TestService">
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     <message name="DoTestResponse">
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          <part name="Name" element="y:Tname"/>
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     <message name="DoTestFault">
          <part name="ExceptionDetail" element="y:Tfault"/>
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     <portType name="TestService">
          <operation name="DoTest">
               <input message="y:DoTestRequest"/>
               <output message="y:DoTestResponse"/>
               <fault name="DoTestException" message="y:DoTestFault"/>
          </operation>
     </portType>
     <binding name="TestService" type="y:TestService">
          <soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
          <operation name="DoTest">
               <soap:operation soapAction="urn:#DoTest" style="document"/>
               <input>
                    <soap:body use="literal"/>
               </input>
               <output>
                    <soap:body use="literal"/>
               </output>
               <fault name="DoTestException">
                    <soap:fault name="DoTestException" use="literal"/>
               </fault>
          </operation>
     </binding>
     <service name="TestServiceSoap">
          <port name="TestService" binding="y:TestService">
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Obviously one could rename the operation to that standard, but that doesn't exactly strike me as being anything other that a work around for a bug.
WSDL provides a contract in which multiple languages have to conform to a set of interfaces, and it's not exactly good to have a tool, just a assume the contract for an interface is wrong.
I could argue that I'm only doing Java on the front end and .Net on the client side and that they don't neccessarily follow the Java convention, nor should be constrained by it.
I do agree with you that they probably just followed the convention when writing to code generator and just happened to pick up the convention. They just need to fix it now.

How to extract email address from Outlook friendly name cache

Hi guys,
A while ago, somebody wrote a little VBA utility to help us to log CRM events. Whenever a user sends an email to a customer, it logs the fact in our CRM database. This is the programmatic process:
1. Grab the email address from ActiveInspector.CurrentItem.To
2. If it's a valid email address, all well and good. Proceed to Step 8.
3. If not a valid email address (it must be a friendly name, perhaps located in Exchange), look for the address in:
ActiveInspector.CurrentItem.Recipients.Item(1).AddressEntry.GetExchangeUser.PrimarySmtpAddress
4. If it's a valid email address, all well and good. Proceed to Step 8.
5. If not a valid email address (it must be in the user's Contact list), look for the address in:
ActiveInspector.CurrentItem.Recipients.Item(1).AddressEntry.GetContact.Email1Address
6. If it's a valid email address, all well and good. Proceed to Step 8.
7. If not a valid email address, then crash!!! <<------------------------------------------------- Here's where I'm stuck!
8. Get the CustomerID from the CRM, based on email address.
9. Do a bunch of other stuff (for example, send the email, and log the event in the CRM).
I'm a former Access MVP, and am highly experienced with VBA, but my forte is clearly not Outlook. What I'd like to do is find the email address by looking in the local cache, and make sure I get the actual email address rather than the friendly name.
I'm not sure if 'local cache' is the right word; I know Outlook stores frequently used email address in some sort of cache, even if the user has not explicitly stored it as a Contact. I just don't know how to find it. Can anyone point me in the right
direction, maybe with a method name?
Also, while mucking about with it, I found the following. Would it be useful in this scenario?
ActiveInspector.CurrentItem.Recipients.Item(1).AddressEntry.GetExchangeDistributionList
Many thanks,
Graham R Seach
Regards, Graham R Seach Sydney, Australia

Hi Graham,
This might help you to figure things out a bit.
The contact cache you are looking for is called the nickname cache, also known as the "autocomplete stream."
The nickname files (.nk2) used by older versions of Outlook (2007 and below).
Outlook 2010 and 2013 does not use the NK2 file; it stores the autocomplete cache in the mailbox or data file and caches the addresses in an autocomplete stream at C:\Users\username\AppData\Local\Microsoft\Outlook\RoamCache. The cache is stored in a file
named Stream_Autocomplete_0_[long GUID].dat.
For applications that interact with Outlook 2010 or Outlook 2013, the autocomplete stream is stored as a MAPI property and can be modified using the MAPI or the
PropertyAccessor object of the message. The PropertyAccessor object is exposed in the Outlook 2010 or Outlook 2013 object models.
Outlook 2010 or Outlook 2013 reads the autocomplete stream from a message in the Associated Contents table of the Inbox of the mail account’s delivery store. This hidden message has a message class and subject of IPM.Configuration.Autocomplete. The autocomplete
stream is stored on this message in the PR_ROAMING_BINARYSTREAM property (PidTagRoamingBinary Canonical Property).
References:
How to import .nk2 files into Outlook 2013
Some Application which can read the Nickname Cache
Interacting with the Autocomplete Stream
Autocomplete Stream
https://msdn.microsoft.com/en-us/library/office/ff625291.aspx
Regards,
Satyajit
Please “Vote As Helpful”
if you find my contribution useful or “Mark As Answer” if it does answer your question. That will encourage me - and others - to take time out to help you.

Parse SQL: How to extract column names, table names from a SQL query

Hi all,
I have a requirement wherein a SQL query will be given in a text file.
The text file has to be read (probably using text_io package), the SQL query needs to be parsed and the column names, table names and where clauses have to be extracted and inserted into separate tables.
Is there a way to do it using PL/SQL ?
Is there a PL/SQL script available to parse and extract column names, table names etc ?
Pls help.
Regards,
Sam

I think I jumped to conclusion too early saying it is completely possible and straight forward. But after reading through your post for one more time I realised you are not interested only in the column_names, also the table_names and the predicates .
>
SQL query needs to be parsed and the column names
>
The above is possible and straight forward using the dbms_sql package.
I am pasting the same information as I did in the other forum.
Check this link and search for Example 8 and .
http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14258/d_sql.htm#sthref6136
Also check the working example from asktom
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1035431863958
>
table names and where clauses have to be extracted
>
Now this is the tricky bit. You can extract the list of tables by getting the sql_id from v$sql and joining it with v$sql_plan. But sometimes you may not get all the results because the optimizer may choose to refine your query (check this link)
http://optimizermagic.blogspot.com/2008/06/why-are-some-of-tables-in-my-query.html
and you can get the predicate information from the same table v$sql_plan but I will leave that area for you to do some R&D.
Regards
Raj
Edited by: R.Subramanian on Dec 10, 2008 3:14 AM

Extracting method names from JNI probes

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