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Custom renameParticpant dialogue with "FATALERROR: No input element provided"

I am creating a custom renameParticpant to rename an Eclipse project's launch configuration files, and to change the APPNAME variable in the Makefile. The Makefile side works 100% of the time, but attempting to rename the launch configs causes the following error to occur:
<FATALERROR
FATALERROR: No input element provided
Context: <Unspecified context>
code: none
Data: null
>
This error occurs when the changes are being validated at the following line in org.eclipse.ltk.core.refactoring.PerformChangeOperation [line: 248].
fValidationStatus= fChange.isValid(new SubProgressMonitor(monitor, 1));
Below is a screenshot of the variable view. I suspect that my compositeChange is not in the correct format or is missing some information, however; the error dialogue and logs don't give any helpful information.
Debugger variable view of fChanges
The following is relevant code snippets:
// This one sparks joy (it works great, 100% success)
final HashMap<IFile, TextFileChange> textChanges = new HashMap<IFile, TextFileChange>();
// Stuff gets put inside
textChanges.put(makefile, changeAppname);
// This one does not spark joy (it runs, but results in an invalid Change)
final HashMap<IFile, RenameResourceChange> renameChanges = new HashMap<IFile, RenameResourceChange>();
// Stuff gets put inside
RenameResourceChange renameChange = new RenameResourceChange(
launch.getFile().getProjectRelativePath(), newLaunchName);
renameChanges.put(launch.getFile(), renameChange);
// This is where they get added to the hashmap.
CompositeChange result;
if (textChanges.isEmpty() && renameChanges.isEmpty()) {
result = null;
} else {
result = new CompositeChange(
String.format("Rename project references and dependencies for %1$s", proj.getName()));
for (Iterator<TextFileChange> iter = textChanges.values().iterator(); iter.hasNext();) {
result.add(iter.next());
}
for (Iterator<RenameResourceChange> iter = renameChanges.values().iterator(); iter.hasNext();) {
result.add(iter.next());
}
}
return result;
I looked into adding or generating a changeDescriptor, however that seems like the wrong approach.

Java Bukkit/Spigot - Block Specified Commands

i'm trying to make a plugin, it must block a specified commands setted by config. i've maked this but it doesn't block any command.
Code:
#EventHandler(priority = EventPriority.HIGHEST)
public void onPreprocess(PlayerCommandPreprocessEvent event)
{
Player player = event.getPlayer();
String command = event.getMessage();
List<String> bCmds = this.plugin.cfg.getStringList("blocked-commands");
for (String bCmd : bCmds)
{
if(command.equalsIgnoreCase(bCmd))
{
event.setCancelled(true);
}
}
}
Config:
blocked-commands:
- /pl
- /op
- /sp
- /gravityblock
PS: I've tried to use:
String command = event.getMessage().subString(1);
Thanks for Help... :)

Registered events? implemented listner?
Also your code will not work with additional arguments in the command.
If it contains spaces, split it with " " and get the first element to just get the command
if (cmd.contains(" ")) cmd = cmd.split(" ")[0];

As stated by Bukkit's wiiki, the priorities are called in the following order:
EventPriority.LOWEST
EventPriority.LOW
EventPriority.NORMAL
EventPriority.HIGH
EventPriority.HIGHEST
EventPriority.MONITOR
Maybe you could try to use the Lowest priority, so the event gets cancelled before the command is handled.
I also believe that the command might have arguments, so it might not be equal to the string provided, you should also try
String command = event.getMessage();
if (command.toLowerCase().startsWith("/command") ) {
//cancel
}

How to use JCo connection without creating *.JcoDestination file

I'm trying to connect to SAP ECC 6.0 using JCo. I'm following this tutorial. However, there is a Note saying:
For this example the destination configuration is stored in a file that is called by the program. In practice you should avoid this for security reasons.
And that is reasonable and understood. But, there is no explenation how to set up secure destination provider.
I found solution in this thread that created custom implementation of DestinationDataProvider and that works on my local machine. But when I deploy it on Portal I get an error saying that there is already registered DestinationDataProvider.
So my question is:
How to store destination data in SAP Java EE application?
Here is my code to further clarify what I'm trying to do.
public static void main(String... args) throws JCoException {
CustomDestinationProviderMap provider = new CustomDestinationProviderMap();
com.sap.conn.jco.ext.Environment.registerDestinationDataProvider(provider);
Properties connectProperties = new Properties();
connectProperties.setProperty(DestinationDataProvider.JCO_ASHOST, "host.sap.my.domain.com");
connectProperties.setProperty(DestinationDataProvider.JCO_SYSNR, "00");
connectProperties.setProperty(DestinationDataProvider.JCO_CLIENT, "100");
connectProperties.setProperty(DestinationDataProvider.JCO_USER, "user");
connectProperties.setProperty(DestinationDataProvider.JCO_PASSWD, "password");
connectProperties.setProperty(DestinationDataProvider.JCO_LANG, "en");
provider.addDestination(DESTINATION_NAME1, connectProperties);
connect();
}
public static void connect() throws JCoException {
String FUNCTION_NAME = "BAPI_EMPLOYEE_GETDATA";
JCoDestination destination = JCoDestinationManager.getDestination(DESTINATION_NAME1);
JCoContext.begin(destination);
JCoFunction function = destination.getRepository().getFunction(FUNCTION_NAME);
if (function == null) {
throw new RuntimeException(FUNCTION_NAME + " not found in SAP.");
}
//function.getImportParameterList().setValue("EMPLOYEE_ID", "48");
function.getImportParameterList().setValue("FSTNAME_M", "ANAKIN");
function.getImportParameterList().setValue("LASTNAME_M", "SKYWALKER");
try {
function.execute(destination);
} catch (AbapException e) {
System.out.println(e.toString());
return;
}
JCoTable table = function.getTableParameterList().getTable("PERSONAL_DATA");
for (int i = 0; i < table.getNumRows(); i++) {
table.setRow(i);
System.out.println(table.getString("PERNO") + '\t' + table.getString("FIRSTNAME") + '\t' + table.getString("LAST_NAME")
+'\t' + table.getString("BIRTHDATE")+'\t' + table.getString("GENDER"));
}
JCoContext.end(destination);
}

Ok, so I got this up and going and thought I'd share my research.
You need to add your own destination in Portal. To achieve that you need to go to NetWeaver Administrator, located at: host:port/nwa. So it'll be something like sapportal.your.domain.com:50000/nwa.
Then you go to Configuration-> Infrastructure-> Destinations and add your destination there. You can leave empty most of the fields like Message Server. The important part is Destination name as it is how you will retrieve it and destination type which should be set to RFC Destination in my case. Try pinging your newly created destination to check if its up and going.
Finally you should be able to get destination by simply calling: JCoDestination destination = JCoDestinationManager.getDestination(DESTINATION_NAME); as it is added to your Portal environment and managed from there.

Take a look at the CustomDestinationDataProvider in the JCo examples of the Jco connector download. The important parts are:
static class MyDestinationDataProvider implements DestinationDataProvider
...
com.sap.conn.jco.ext.Environment.registerDestinationDataProvider(new MyDestinationDataProvider());
Then you can simply do:
instance = JCoDestinationManager.getDestination(DESTINATION_NAME);
Btw. you may also want to check out http://hibersap.org/ as they provide nice ways to store the config as well.

Having Java call an Applescript file with arguments

I have a Java program that calls an Applescript file to run, and returns information back to Java. However, I need to also pass some arguments to the Applescript file. The relevant portion of the Java file:
public static void scriptRunner(String[] args) {
// Connect to the database.
ConnectionManager.getInstance().setDBType(DBType.MYSQL);
// Prepare the AppleScript file to be executed.
String homeFolder = System.getenv("HOME");
File scriptFile = new File(homeFolder + "/Documents/Output--Test.applescript");
InputStream scriptStream = null;
try {
scriptStream = FileUtils.openInputStream(scriptFile);
} catch (IOException e) {
JOptionPane.showMessageDialog(null, "Could not find the Output AppleScript file. Please notify Chris McGee", "File not found", JOptionPane.ERROR_MESSAGE);
ConnectionManager.getInstance().close();
System.exit(1);
}
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(scriptStream));
// These two lines prepare the scripting engine, ready to run the script.
ScriptEngineManager mgr = new ScriptEngineManager();
ScriptEngine engine = mgr.getEngineByName("AppleScript");
// Add the parameters to the engine so they will be passed to the script.
engine.put("javaOrderNum", args[0]);
engine.put("javaShipDate", args[1]);
engine.put("javaInitials", args[2]);
engine.put("javaOverruns", args[3]);
// Run the script and evaluate the result.
log.trace("Run the script and evaluate the result.");
Object result = null;
try {
result = engine.eval(bufferedReader); // Run the script and place the result into an abstract object.
} catch (ScriptException e) {
JOptionPane.showMessageDialog(null, "Either an error occurred with the Output script or the user cancelled it.", "Script error / cancel", JOptionPane.INFORMATION_MESSAGE);
ConnectionManager.getInstance().close();
System.exit(1);
}
log.debug(result); // Check that we received the correct information back from the script.
log.debug("");
.
.
.
Sadly, the engine.put lines, as suggested from a forum I read during my searches to get this problem solved, don't seem to work. The AppleScript file:
-- Get variables passed in
set jOrderNum to item 1 of arguments
set jShipDate to item 2 of arguments
set jInitials to item 3 of arguments
set jOverruns to item 4 of arguments
-- Set the correct folder variable
if (folderExists(POSIX path of "/Volumes/Users/Scripts/")) then
set server_prefix to "/Volumes/Users/Scripts/"
else if (folderExists(POSIX path of "/centralserver/Users/Scripts/")) then
set server_prefix to "/centralserver/Users/Scripts/"
else
display alert "Please connect to the central server, then try again.
If you have already done so, please let Chris McGee know."
end if
with timeout of (30 * 60) seconds
tell application "Adobe InDesign CS6"
set myJavaScript to server_prefix & "sky-artdept/Test/Output.jsx"
set myResult to do script myJavaScript with arguments {jOrderNum, jShipDate, jInitials, jOverruns} language javascript
return myResult
end tell
end timeout
on folderExists(posixPath)
return ((do shell script "if test -e " & quoted form of posixPath & "; then
echo 1;
else
echo 0;
fi") as integer) as boolean
end folderExists
I am given an error that the variable arguments is not defined. What can I try next?

I can't help with the javascript running the applescript. But, you applescript code is missing a declaration. You're asking for "item 1 of arguments" but you never define the variable arguments.
When the script is not inside any handler, it is implicit that it is inside a run() handler. And, since you're needing to pass arguments on run, you should try wrapping your script, minus the on folderExists() handler, inside a run handler that includes the arguments declaration.
on run(arguments)
-- Get variables passed in
set jOrderNum to item 1 of arguments
set jShipDate to item 2 of arguments
…
end timeout
end run
on folderExists(posixPath)
…
end folderExists

JT400 ProgramCall's run() method is not returning any result

I am new to JT400. I am trying to invoke a test program in AS400 through JT400. Here is my code
public class TestRpg {
public static void main(String[] args){
try{
AS400 sys=new AS400("mydomain","username","password");
String number="asdf <= Return value from Java Input";
String lnsts="";
String amount="";
String lnofcd="";
AS400Text txt80 = new AS400Text(80);
AS400Text txt50 = new AS400Text(50);
ProgramParameter[] parmList = new ProgramParameter[4];
parmList[0] = new ProgramParameter( txt80.toBytes(number),80);
parmList[1] = new ProgramParameter( txt50.toBytes(lnsts),50);
parmList[2] = new ProgramParameter( txt80.toBytes(amount),80);
parmList[3] = new ProgramParameter( txt50.toBytes(lnofcd),50);
ProgramCall pgm = new ProgramCall(sys,"/QSYS.LIB/mylib.LIB/testrpg.PGM",parmList);
if (pgm.run()!=true) {
System.out.println("executed");
}else{
System.out.println("Output Data 0: " + (String)txt80.toObject( parmList[0].getOutputData() ) );
System.out.println("Output Data 1: " + (String)txt50.toObject( parmList[1].getOutputData() ) );
System.out.println("Output Data 2: " + (String)txt80.toObject( parmList[2].getOutputData() ) );
System.out.println("Output Data 3: " + (String)txt50.toObject( parmList[3].getOutputData() ) );
sys.disconnectService(AS400.COMMAND);
}
AS400Message[] messageList = pgm.getMessageList();
System.out.println(messageList.length);
for (int i=0; i < messageList.length; i++)
{
System.out.print ( messageList[i].getID() );
System.out.print ( ": " );
System.out.println( messageList[i].getText() );
}
sys.disconnectService(AS400.COMMAND);
}catch(Exception e) {
System.out.println(e.toString());
}
}
}
I had debug the code it's not giving any response after executing
pgm.run(). It is not even showing any exception. Programme is just holding at pgm.run() and not returning any thing.
As per the comments I got, I want to include the scenario I am trying to work on. In AS400 when we execute the testrpg.pgm program, it displays a screen with four input fields and some function keys to perform operations. My intention is to invoke f2 function key of that program from JT400. Is the approach I am following is the right way? Please suggest me

All program calls happen in batch so your program is most likely in MSGW on the server. Find it with wrkactjob and investigate the message it is waiting for, and give the appropriate action.
This is typically due to incorrectly formed parameters.

This is a common misunderstanding, so just for clarification for other readers:
Calling a Cobol/RPG program from Java is batch, just the same as calling the Cobol/RPG program from a Cobol/RPG/CL.
How to begin: Create a program which you can call from CL:
... declare and fill MYFIELD1, MYFIELD2 ...
CALL PGM(MYPGM) PARM(&MYFIELD1 &MYFIELD2)
...
If this works, it will also work from Java using jt400, if you:
call the right AS400 using correct credentials
call the right program in the right library
use the right number and lentgh of parameters
In case of crash as described (waiting forever), DSPMSG QSYSOPR will show an open message, like "MCH0801 = wrong number of parameters". D=Dump will create a spoolfile where you see which incoming parameters are filled with which content, or you see "undefined".