10:35 p.m.
I'm interested in using the
http://mvel.codehaus.org/Inline+List,+Maps+and+Arrays compact syntax
available for Maps in MVEL , but I can't quite get it right. I am
attempting to write a simple function to convert English numbers (i.e.
"one", "two", etc) to the integer value. This is how I would LIKE it
to
work:
/function int englishToInt(String englishNumber)
{
return ["one":1, "two":2, "three":3, "four":4,
"five":5].get(englishNumber.toLowerCase());
}/
The closest I've gotten to having it work is this:
/function int englishToInt(String englishNumber)
{
Map m = ["one":1, "two":2, "three":3, "four":4,
"five":5];
Object obj = m.get(englishNumber.toLowerCase());
if(obj != null)
return Integer.parseInt(obj.toString());
}/
But I get this rather unhelpful error message:
/
Error importing : 'defaultpkg.EnglishToInt.englishToInt'
[ function englishToIntenglishToInt (line:7): Syntax error on tokens, delete
these tokens
]/
... What tokens?? lol
Thanks,
Joe
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10:37 p.m.
Correction.... I didn't paste the whole function the second time. I do have
a return for the else...
/function int englishToInt(String englishNumber)
{
Map m = ["one":1, "two":2, "three":3, "four":4,
"five":5];
Object obj = m.get(englishNumber.toLowerCase());
if(obj != null)
return Integer.parseInt(obj.toString());
else
return -1;
}/
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3:32 p.m.
functions can only be written in Java.
There is no support for MVEL dialect in functions.
Mark
On 21/03/2012 03:37, barnesjd wrote:
Correction.... I didn't paste the whole function the second time.
I do have
a return for the else...
/function int englishToInt(String englishNumber)
{
Map m = ["one":1, "two":2, "three":3, "four":4,
"five":5];
Object obj = m.get(englishNumber.toLowerCase());
if(obj != null)
return Integer.parseInt(obj.toString());
else
return -1;
}/
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3:37 p.m.
Yes, I was quite surprised when the DRL compilation accepted the MVEL-ishly
written function with dialect "mvel" preceding it. I thought that there was
some
undocumented development. So, why does it go the way it does?
-W
On 21 March 2012 21:32, Mark Proctor <mproctor(a)codehaus.org> wrote:
functions can only be written in Java.
There is no support for MVEL dialect in functions.
Mark
On 21/03/2012 03:37, barnesjd wrote:
> Correction.... I didn't paste the whole function the second time. I do
have
> a return for the else...
>
> /function int englishToInt(String englishNumber)
> {
> Map m = ["one":1, "two":2, "three":3,
"four":4, "five":5];
> Object obj = m.get(englishNumber.toLowerCase());
>
> if(obj != null)
> return Integer.parseInt(obj.toString());
> else
> return -1;
> }/
>
>
> --
> View this message in context:
http://drools.46999.n3.nabble.com/Trouble-with-the-MVEL-Map-syntax-tp3844...
> Sent from the Drools: User forum mailing list archive at Nabble.com.
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
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3:41 p.m.
On 21/03/2012 20:37, Wolfgang Laun wrote:
Yes, I was quite surprised when the DRL compilation accepted the
MVEL-ishly
written function with dialect "mvel" preceding it. I thought that
there was some
undocumented development. So, why does it go the way it does?
I dont' think it
does. All we do is slurp in the text and pass it to the
JDT compiler. So I doubt the the code below works. i'm looking at the
JavaFunctionBuilder, I don't see any pre-processors that would enable
those inline maps to work.
Mark
-W
On 21 March 2012 21:32, Mark Proctor <mproctor(a)codehaus.org
<mailto:mproctor@codehaus.org>> wrote:
functions can only be written in Java.
There is no support for MVEL dialect in functions.
Mark
On 21/03/2012 03:37, barnesjd wrote:
> Correction.... I didn't paste the whole function the second
time. I do have
> a return for the else...
>
> /function int englishToInt(String englishNumber)
> {
> Map m = ["one":1, "two":2, "three":3,
"four":4, "five":5];
> Object obj = m.get(englishNumber.toLowerCase());
>
> if(obj != null)
> return Integer.parseInt(obj.toString());
> else
> return -1;
> }/
>
>
> --
> View this message in context:
http://drools.46999.n3.nabble.com/Trouble-with-the-MVEL-Map-syntax-tp3844...
> Sent from the Drools: User forum mailing list archive at Nabble.com.
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org <mailto:rules-users@lists.jboss.org>
> https://lists.jboss.org/mailman/listinfo/rules-users
_______________________________________________
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rules-users(a)lists.jboss.org <mailto:rules-users@lists.jboss.org>
https://lists.jboss.org/mailman/listinfo/rules-users
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3:44 p.m.
It compiles without indicating an error.
2012/3/21 Mark Proctor <mproctor(a)codehaus.org>
On 21/03/2012 20:37, Wolfgang Laun wrote:
Yes, I was quite surprised when the DRL compilation accepted the MVEL-ishly
written function with dialect "mvel" preceding it. I thought that there
was some
undocumented development. So, why does it go the way it does?
I dont' think it does. All we do is slurp in the text and pass it to the
JDT compiler. So I doubt the the code below works. i'm looking at the
JavaFunctionBuilder, I don't see any pre-processors that would enable those
inline maps to work.
Mark
-W
On 21 March 2012 21:32, Mark Proctor <mproctor(a)codehaus.org> wrote:
> functions can only be written in Java.
>
> There is no support for MVEL dialect in functions.
>
> Mark
> On 21/03/2012 03:37, barnesjd wrote:
> > Correction.... I didn't paste the whole function the second time. I do
> have
> > a return for the else...
> >
> > /function int englishToInt(String englishNumber)
> > {
> > Map m = ["one":1, "two":2, "three":3,
"four":4, "five":5];
> > Object obj = m.get(englishNumber.toLowerCase());
> >
> > if(obj != null)
> > return Integer.parseInt(obj.toString());
> > else
> > return -1;
> > }/
> >
> >
> > --
> > View this message in context:
>
http://drools.46999.n3.nabble.com/Trouble-with-the-MVEL-Map-syntax-tp3844...
> > Sent from the Drools: User forum mailing list archive at Nabble.com.
> > _______________________________________________
> > rules-users mailing list
> > rules-users(a)lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
>
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
_______________________________________________
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listrules-users@lists.jboss.orghttps://lists.jboss.org/mailman/listinfo/rules-users
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2:14 a.m.
See below.
On 21/03/2012, barnesjd <barnesjd+nabble(a)gmail.com> wrote:
I'm interested in using the
http://mvel.codehaus.org/Inline+List,+Maps+and+Arrays compact syntax
available for Maps in MVEL , but I can't quite get it right. I am
attempting to write a simple function to convert English numbers (i.e.
"one", "two", etc) to the integer value. This is how I would LIKE it
to
work:
/function int englishToInt(String englishNumber)
{
return ["one":1, "two":2, "three":3, "four":4,
"five":5].get(englishNumber.toLowerCase());
}/
The closest I've gotten to having it work is this:
/function int englishToInt(String englishNumber)
{
Map m = ["one":1, "two":2, "three":3, "four":4,
"five":5];
Object obj = m.get(englishNumber.toLowerCase());
if(obj != null)
return Integer.parseInt(obj.toString());
}/
But I get this rather unhelpful error message:
/
Error importing : 'defaultpkg.EnglishToInt.englishToInt'
[ function englishToIntenglishToInt (line:7): Syntax error on tokens, delete
these tokens
]/
... What tokens?? lol
The given line is the one with "function int..." - so delete all of it :)
When using MVEL like this, inserting
dialect "mvel"
up front helps a lot.
-W
Thanks,
Joe
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1:31 p.m.
laune wrote
The given line is the one with "function int..." - so delete all of it :)
When using MVEL like this, inserting
dialect "mvel"
up front helps a lot.
-W
LOL... Thanks for the tip! I thought that wasn't necessary because I
explicitly set my default dialect to mvel. Now that I have this working,
I've discovered a different issue that I'm having which I believe merits a
separate thread.
Joe
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5126
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5126
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7 comments
3 participants
participants (3)
-
barnesjd -
Mark Proctor -
Wolfgang Laun