I've been searching for some time now, and I'm sure I've missed it, is there any documentation that states what should be thrown when a value is incorrect/blank?
For example, Python has ValueError and the documentation clearly states when to use it.
I have the following method:
proc getJobinfo {question} {
puts -nonewline "$question: "
flush stdout
gets stdin answer
set cleanedanswer [string trim [string totitle $answer]]
if {$cleanedanswer eq ""} {
# What error should be thrown?
}
return $cleanedanswer
}
I've searched throw, error, and catch, but couldn't find it.
Tcl doesn't have a pre-defined hierarchy of exceptions. The throw command takes 2 arguments: type is a list of words; and message is an error message for humans.
You could do something like
proc getJobinfo {question} {
...
if {$cleanedanswer eq ""} {
throw {Value Empty} "Please provide a suitable answer."
} elseif {[string length $cleanedanswer] < 5} {
throw {Value Invalid} "Your answer is too short."
} else ...
return $cleanedanswer
}
If you want to trap that error:
try {
set answer [getJobinfo "What is the answer to this question"]
} trap {Value *} msg {
puts "Value Error: $msg"
}
throw and try interact via the type words of the throw call. We throw "Value Empty" or "Value Invalid". In the trap, we match Value exactly, but we won't match * exactly. In hindsight the * should not be there.
The try manpage is not super clear at first read:
trap pattern variableList script
This clause matches if the evaluation of body resulted in an error and the prefix of the -errorcode from the interpreter's status dictionary is equal to the pattern. The number of prefix words taken from the -errorcode is equal to the list-length of pattern, and inter-word spaces are normalized in both the -errorcode and pattern before comparison.
pattern is not a pattern in the regexp or string match sense: it's a list of words that is matched one-by-one with the list of words thrown in the try body.
The try can be implemented with multiple traps to have cascading "catches":
try {
set answer [getJobinfo "What is the answer to this question"]
} trap {Value Empty} msg {
do something specific here
} trap {Value Invalid} msg {
do something specific here
} trap {Value} msg {
do something general for some other "throw {Value anything} msg"
} on error e {
this can be default catch-all for any other error
} finally {
any cleanup code goes here
}
I am trying to test a java.sql.SQLException handler which unwraps the exceptions like below. However I'm not sure how I would throw this exception in a test.
(-> e
(.getNextException)
(.getMessage)
(.startsWith "ERROR: duplicate key value"))
current mock (.getNextException) returns nil on this:
(throw (SQLException. "ERROR: duplicate key value"))
You want:
(throw (doto (SQLException. "Top-level exception")
(.setNextException (SQLException. "ERROR: duplicate key value"))))
This should be enough for someone to correct my issue - I'm very much a newbie at this.
It's a short bit of code to strip spaces from the ends of strings submitted in forms.
The warning message is saying "Use of undefined constant mystriptag - assumed 'mystriptag' (this will throw an error..."
How should I change this?
function mystriptag($item)
{
$item = strip_tags($item);
}
array_walk($_POST, mystriptag);
function t_area($str){
$order = array("\r\n", "\n", "\r");
$replace = ', ';
$newstr = str_replace($order, $replace, $str);
return $newstr;
}
You must use single quote in order for PHP to understand your parameter mystriptag.
So the correct line would be :
array_walk($_POST, 'mystriptag');
I'm new to DXL programming language in IBM DOORS. However, I think I have managed to do many interesting things: create Modules, create Objects, create Links, delete Objects etc.
However, I have a very specific problem regarding "null" Modules. I've just written null between "" because the modules exist and they are referenced with a correct name.
When doing this:
Module m1 = edit("1. MY_MODULE", false)
save(m1)
close(m1)
An error like this appears:
enter image description here
You could not understand what does that mean as it is spanish. Basically states this: "Module null parameter in the first position of the argument." That means that the "m1" is null, as the parameter for save() method is null.
The point is that it is an error which appears only sometimes. It seems that the Module is null as it has been previously opened and DOORS does not close properly.
Is there any way, any method...whatever to avoid this error?
I assume that the script cannot find the module when another folder is active.
Try
Module m1 = edit ("/myproject/myfolder/mysubfolder/1. MY_MODULE", false)
There might be many reasons that the module can't be opened in edit mode. For example: User do not have write access OR Module is being used by other user, etc.
However, you can get around the error with the below code snippet:
Module m = edit('My_module', false)
if(!null m) {
//execute program
...
}
else {
//do something
}
I hope this helps.
How does your script work? do you open the same module again and again and sometimes get the error or do you open lots of modules and for some of them it works and for others it doesn't? In the latter case, perhaps you misspelled the path. You could add some sanity checks like
string fullPathToMod = "/myproject/myfolder.."
Item i = item fullPathToMod;
if null i then error "there is no item called " fullPathToMod
if "Module" != type i then error "there is an item, but it's not a module, it's a " type i
This is how the Code is structured:
void checkModule(string folderPath, string mName, Skip list, int listSize, int listLastIndex, string headers[], string heading[], string headerKey, bool uniqueKey, string combinedKey[]){
if (module mName){
Folder f = folder(folderPath)
current = f
Module m = edit(folderPath""mName, false)
current = m
Object o = first(m) // error sometimes: Se ha pasado un parametro Module null en una posición de argumento 1
if (o == null){
loadModule(m, list, listSize, listLastIndex, headers, heading)
} else {
updateModule(m, mName, list, listSize, listLastIndex, heading, headerKey, headers, uniqueKey, combinedKey)
save(m)
close(m)
}
if (lastError() != ""){
print "Error: " lastError() "\n"
}
} else {
print "No module " mName ".\n"
}
}
Exactly it breaks in line:
current = m
But as said, only sometimes, not always.
BTW, I'm executing this script via Batch, via Java code. One curious thing is that if I close DOORS, and execute the script it does execute correctly. It is as if it needs to be closed in order to edit modules correctly.
I pressume current can be used more than once with different types of Items. I guess it should not be wrong, but it breaks saying (more or less):
Null value passed to DXL commmand (current Module).
Obviously, it means that m is null, but I cannot see any reason for that.
I am testing DROOLS 7.0 with a simple test Rule set using the following code:
KieContainer kc = KieServices.Factory.get().getKieClasspathContainer();
KieSession ksession = kc.newKieSession("DroolsTestKS");
...
The KieSession instance is returned even if there are errors in the rule .drl file, and no exception is thrown. I would like to check the result of the rules compilation.
The Drools reference (see 4.2.2.4) says that the build result can be obtained with:
KieServices kieServices = KieServices.Factory.get();
KieBuilder kieBuilder = kieServices.newKieBuilder( kfs ).buildAll();
assertEquals( 0, kieBuilder.getResults().getMessages( Message.Level.ERROR ).size() );
where kfs is a KieFileSystem instance, but the examples on how to build such a KieFileSystem in the previous pages of the manual are much more complex and a little bit confused IMHO.
Is there a way to have the Session buid result (i.e. to access a KieBuilder ) when creating a the KieSession with the simple two lines of code I show at the beginning of this post ?
I am answering to my question, because I've just found a solution:
KieContainer kc = KieServices.Factory.get().getKieClasspathContainer();
Results rs = kc.verify("KBase");
if (rs.hasMessages(Level.ERROR)) {
System.out.println("ERRORI DROOLS: " + rs.getMessages());
... // handle this
}
I'm wondering if with this validation the actual rules compilation is executed twice or not ... but anyway this method seems to work.