Re: [rules-users] expander mappings empty !
I think because the stream has reached the end once you load it the first time. Get a fresh reader from a fresh stream and it should work. On 8/13/07, hypnosat7 <[EMAIL PROTECTED]> wrote: > > > But why the expand methode in DrlParser.parse(final String source, final > Reader dsl) can't build the expander with an inputStreamReader on a used > ressource ? > And If I use two FileReader on the same dsl file it work's > > example : > > dslReader = new > InputStreamReader(getClass().getResourceAsStream(dslSource)); > ... >DSLMappingFile dslMappingFile = new DSLMappingFile(); >dslMappingFile.parseAndLoad(dslReader); >... >builder.addPackageFromDrl(drlReader, dslReader); > > the package built is invalid because the mappings property in the expander > is empty > > Any explaination to this ? > thanks > > > > > hypnosat7 wrote: > > > > > > In fact I used the dsl Reader before to build a DefaultDslMapping. So > the > > problem is fixed > > > > > > hypnosat7 wrote: > >> > >> Hi, > >> I have an error when I try to buil a package using a dsl Reader : > >> [EMAIL PROTECTED],1]: unknown:16:1 Unexpected > >> token 'une' > >> > >> I try to debug it with eclipse and I find no mappings in the variable > >> "expander" > >> > >> final String expanded = expander.expand( source ); > >> > >> I'ts in the method DrlParser.parse(final String source, final Reader > dsl) > >> throws DroolsParserException > >> > >> So what can be the problem > >> > > > > > > -- > View this message in context: > http://www.nabble.com/expander-mappings-empty-%21-tf4260034.html#a12124221 > Sent from the drools - user mailing list archive at Nabble.com. > > ___ > rules-users mailing list > rules-users@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] expander mappings empty !
I need the mapping for a wizard.
In fact if I execute the methode below before the
addPackageFromDrl(drlReader, dslReader) I have problems.
private DSLMapping generateDslMapping(Reader dslReader)
{
DSLMappingFile dslMappingFile = new DSLMappingFile();
try
{
dslMappingFile.parseAndLoad(dslReader);
}
catch (IOException e)
{
throw new DroolsRuleAppException(e);
}
return dslMappingFile.getMapping();
}
Kris Verlaenen wrote:
>
> This is not Drools-related but rather a generic Java problem.
> You should read the Java API of the Reader class.
> A reader remembers the last position it used to read out data.
> So if you try to use the same reader twice, the second time it will be
> empty,
> as it will already be at the end of the file.
> You could try to reset the reader to the start of the file, however,
> this method is not supported by all implementations of Reader.
>
> It is unclear why you are building your own dslMappingFile however.
> The builder will do all that for you if you just use
> builder.addPackageFromDrl(drlReader, dslReader);
>
> Kris
>
> - Original Message -
> From: "hypnosat7" <[EMAIL PROTECTED]>
> To:
> Sent: Monday, August 13, 2007 12:53 PM
> Subject: Re: [rules-users] expander mappings empty !
>
>
>>
>> But why the expand methode in DrlParser.parse(final String source, final
>> Reader dsl) can't build the expander with an inputStreamReader on a used
>> ressource ?
>> And If I use two FileReader on the same dsl file it work's
>>
>> example :
>>
>>dslReader = new
>> InputStreamReader(getClass().getResourceAsStream(dslSource));
>>...
>> DSLMappingFile dslMappingFile = new DSLMappingFile();
>> dslMappingFile.parseAndLoad(dslReader);
>> ...
>> builder.addPackageFromDrl(drlReader, dslReader);
>>
>> the package built is invalid because the mappings property in the
>> expander
>> is empty
>>
>> Any explaination to this ?
>> thanks
>>
>>
>>
>>
>> hypnosat7 wrote:
>>>
>>>
>>> In fact I used the dsl Reader before to build a DefaultDslMapping. So
>>> the
>>> problem is fixed
>>>
>>>
>>> hypnosat7 wrote:
>>>>
>>>> Hi,
>>>> I have an error when I try to buil a package using a dsl Reader :
>>>> [EMAIL PROTECTED],1]: unknown:16:1 Unexpected
>>>> token 'une'
>>>>
>>>> I try to debug it with eclipse and I find no mappings in the variable
>>>> "expander"
>>>>
>>>> final String expanded = expander.expand( source );
>>>>
>>>> I'ts in the method DrlParser.parse(final String source, final Reader
>>>> dsl)
>>>> throws DroolsParserException
>>>>
>>>> So what can be the problem
>>>>
>>>
>>>
>>
>> --
>> View this message in context:
>> http://www.nabble.com/expander-mappings-empty-%21-tf4260034.html#a12124221
>> Sent from the drools - user mailing list archive at Nabble.com.
>>
>> ___
>> rules-users mailing list
>> rules-users@lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/rules-users
>
> ___
> rules-users mailing list
> rules-users@lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
--
View this message in context:
http://www.nabble.com/expander-mappings-empty-%21-tf4260034.html#a12126286
Sent from the drools - user mailing list archive at Nabble.com.
___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] expander mappings empty !
This is not Drools-related but rather a generic Java problem. You should read the Java API of the Reader class. A reader remembers the last position it used to read out data. So if you try to use the same reader twice, the second time it will be empty, as it will already be at the end of the file. You could try to reset the reader to the start of the file, however, this method is not supported by all implementations of Reader. It is unclear why you are building your own dslMappingFile however. The builder will do all that for you if you just use builder.addPackageFromDrl(drlReader, dslReader); Kris - Original Message - From: "hypnosat7" <[EMAIL PROTECTED]> To: Sent: Monday, August 13, 2007 12:53 PM Subject: Re: [rules-users] expander mappings empty ! But why the expand methode in DrlParser.parse(final String source, final Reader dsl) can't build the expander with an inputStreamReader on a used ressource ? And If I use two FileReader on the same dsl file it work's example : dslReader = new InputStreamReader(getClass().getResourceAsStream(dslSource)); ... DSLMappingFile dslMappingFile = new DSLMappingFile(); dslMappingFile.parseAndLoad(dslReader); ... builder.addPackageFromDrl(drlReader, dslReader); the package built is invalid because the mappings property in the expander is empty Any explaination to this ? thanks hypnosat7 wrote: In fact I used the dsl Reader before to build a DefaultDslMapping. So the problem is fixed hypnosat7 wrote: Hi, I have an error when I try to buil a package using a dsl Reader : [EMAIL PROTECTED],1]: unknown:16:1 Unexpected token 'une' I try to debug it with eclipse and I find no mappings in the variable "expander" final String expanded = expander.expand( source ); I'ts in the method DrlParser.parse(final String source, final Reader dsl) throws DroolsParserException So what can be the problem -- View this message in context: http://www.nabble.com/expander-mappings-empty-%21-tf4260034.html#a12124221 Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] expander mappings empty !
But why the expand methode in DrlParser.parse(final String source, final Reader dsl) can't build the expander with an inputStreamReader on a used ressource ? And If I use two FileReader on the same dsl file it work's example : dslReader = new InputStreamReader(getClass().getResourceAsStream(dslSource)); ... DSLMappingFile dslMappingFile = new DSLMappingFile(); dslMappingFile.parseAndLoad(dslReader); ... builder.addPackageFromDrl(drlReader, dslReader); the package built is invalid because the mappings property in the expander is empty Any explaination to this ? thanks hypnosat7 wrote: > > > In fact I used the dsl Reader before to build a DefaultDslMapping. So the > problem is fixed > > > hypnosat7 wrote: >> >> Hi, >> I have an error when I try to buil a package using a dsl Reader : >> [EMAIL PROTECTED],1]: unknown:16:1 Unexpected >> token 'une' >> >> I try to debug it with eclipse and I find no mappings in the variable >> "expander" >> >> final String expanded = expander.expand( source ); >> >> I'ts in the method DrlParser.parse(final String source, final Reader dsl) >> throws DroolsParserException >> >> So what can be the problem >> > > -- View this message in context: http://www.nabble.com/expander-mappings-empty-%21-tf4260034.html#a12124221 Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] expander mappings empty !
In fact I used the dsl Reader before to build a DefaultDslMapping. So the problem is fixed hypnosat7 wrote: > > Hi, > I have an error when I try to buil a package using a dsl Reader : > [EMAIL PROTECTED],1]: unknown:16:1 Unexpected > token 'une' > > I try to debug it with eclipse and I find no mappings in the variable > "expander" > > final String expanded = expander.expand( source ); > > I'ts in the method DrlParser.parse(final String source, final Reader dsl) > throws DroolsParserException > > So what can be the problem > -- View this message in context: http://www.nabble.com/expander-mappings-empty-%21-tf4260034.html#a12123289 Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] expander mappings empty !
Hi, I have an error when I try to buil a package using a dsl Reader : [EMAIL PROTECTED],1]: unknown:16:1 Unexpected token 'une' I try to debug it with eclipse and I find no mappings in the variable "expander" final String expanded = expander.expand( source ); I'ts in the method DrlParser.parse(final String source, final Reader dsl) throws DroolsParserException So what can be the problem -- View this message in context: http://www.nabble.com/expander-mappings-empty-%21-tf4260034.html#a12123116 Sent from the drools - user mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
