Hi Andy,
the default constructor for -basex has been added with REx v5.39.
For controlling the namespace, please use the "Name/Namespace" option at parser generation time. Its effect depends on the target:
- for XQuery, it will be used as the module namespace. The output file name still depends on the input file name,
- for Java, it will be used as the package- and class name, thus also affecting the output file name, and for -basex the external function/module namespace.
Best regards
Gunther
Gesendet: Sonntag, 10. April 2016 um 23:27 Uhr
Von: "Andy Bunce" <bunce.a...@gmail.com>
An: "Christian Grün" <christian.gr...@gmail.com>
Cc: "Gunther Rademacher" <g...@gmx.net>, "basex-talk@mailman.uni-konstanz.de" <basex-talk@mailman.uni-konstanz.de>
Betreff: Re: Re: [basex-talk] Problem deleting jar packaged item from repo
Von: "Andy Bunce" <bunce.a...@gmail.com>
An: "Christian Grün" <christian.gr...@gmail.com>
Cc: "Gunther Rademacher" <g...@gmx.net>, "basex-talk@mailman.uni-konstanz.de" <basex-talk@mailman.uni-konstanz.de>
Betreff: Re: Re: [basex-talk] Problem deleting jar packaged item from repo
Hi Gunther Christian,
>Will take care of this.
Thanks that's great. I have added the constructor by hand for a couple of examples and released a new ex-xparse version [1] based on this. I am very happy with the results - it is orders of magnitude faster and more functional than the previous version.>Will take care of this.
On 8 April 2016 at 12:01, Christian Grün <christian.gr...@gmail.com> wrote:
+1 ;)
On Fri, Apr 8, 2016 at 12:45 PM, Gunther Rademacher <g...@gmx.net> wrote:
> Hi Andy,
>
> thanks for the hint, it helped me reproducing the problem.
>
> Well, if a BaseX repository module needs a zero argument constructor, it
> makes sense to have REx create one as an effect of the -basex option. Will
> take care of this.
>
> Best regards
> Gunther
>
> Gesendet: Freitag, 08. April 2016 um 11:34 Uhr
> Von: "Andy Bunce" <bunce.a...@gmail.com>
> An: "Gunther Rademacher" <g...@gmx.net>
> Cc: "Christian Grün" <christian.gr...@gmail.com>,
> "basex-talk@mailman.uni-konstanz.de" <basex-talk@mailman.uni-konstanz.de>
>
> Betreff: Re: [basex-talk] Problem deleting jar packaged item from repo
> Hi,
> I want a solution that lives in the repository. This is to allow
> installation to be automated. That is not to require users to manually place
> jar files and/or edit classpaths. I think this requires the "import module"
> form.
>
> I am happy to go with Christian's Java extra class or maybe Ex-path xar
> packaging with a small XQuery module and the existing jar in order to
> achieve this.
>
> Thanks
> /Andy
>
>
> On 8 April 2016 at 10:30, Gunther Rademacher <g...@gmx.net> wrote:
>>
>> ...sorry, I mixed up "declare" and "import" in my previous post. It should
>> have been:
>>
>>
>> Hi Christian,
>>
>> but the instantiation occurs only when the calling code uses "import
>> module", right? I still can't see a problem when just declaring the
>> namespace properly.
>>
>> It remains unclear to me why "import module" would be necessary here. Is
>> that because the calling code should be the same, regardless of using an
>> XQuery module or a Java coded module? But isn't the Java variant supposed to
>> have a URI using the "java:" scheme? I noticed that this is not enforced,
>> though.
>>
>> Best regards
>> Gunther
>>
>>
>> Gesendet: Freitag, 08. April 2016 um 08:55 Uhr
>> Von: "Christian Grün" <christian.gr...@gmail.com>
>> An: "Gunther Rademacher" <g...@gmx.net>
>> Cc: "Andy Bunce" <bunce.a...@gmail.com>,
>> "basex-talk@mailman.uni-konstanz.de" <basex-talk@mailman.uni-konstanz.de>
>> Betreff: Re: Re: [basex-talk] Problem deleting jar packaged item from repo
>> Hi Gunther,
>>
>> I agree, it wouldn’t make too much sense to add a default constructor
>> to your code as long as there is the one-argument constructor that
>> will be called by the parseXQuery function.
>>
>> The reason why a default constructor is required in BaseX is because
>> "import module" will always create an instance of the imported Java
>> class, which can then be addressed in the XQuery code, using the
>> assigned prefix [1].
>>
>> @Andy: For creating a BaseX module, you could add another simple Java
>> class, which will then call the actual parser class:
>>
>> import org.basex.query.value.item.Str;
>> import org.basex.query.value.node.ANode;
>> public class XQuery31Parser {
>> public ANode parseXQuery(Str str) throws IOException {
>> return CR_xquery_31_20151217.parseXQuery(str);
>> }
>> }
>>
>> Hope this helps,
>> Christian
>>
>> [1] http://docs.basex.org/wiki/Java_Bindings#Module_Imports
>>
>>
>>
>> On Thu, Apr 7, 2016 at 11:54 PM, Gunther Rademacher <g...@gmx.net> wrote:
>> > Hi Andy, Christian,
>> >
>> > a default constructor is added implicitly, when a class does not provide
>> > any
>> > constructors itself. A REx-generated class however comes with a
>> > constructor.
>> > In that case any instantiation must provide arguments for some defined
>> > constructor.
>> >
>> > However I do not see a real reason for instantiating the class at load
>> > time.
>> > The generated parse function is static and it takes care of
>> > instantiating a
>> > parser object internally.
>> >
>> > I just did a quick test and found that I see this instantiating problem
>> > when
>> > using "import module namespace ...". No problem when using "declare
>> > namespace ...." or just an EQName literal instead. I have put my
>> > extension
>> > function class files into the classpath for checking this.
>> >
>> > Am I missing something here?
>> >
>> > Best regards
>> > Gunther
>> >
>> > Gesendet: Donnerstag, 07. April 2016 um 19:34 Uhr
>> > Von: "Christian Grün" <christian.gr...@gmail.com>
>> > An: "Andy Bunce" <bunce.a...@gmail.com>
>> > Cc: "Gunther Rademacher" <g...@gmx.net>,
>> > "basex-talk@mailman.uni-konstanz.de"
>> > <basex-talk@mailman.uni-konstanz.de>
>> > Betreff: Re: [basex-talk] Problem deleting jar packaged item from repo
>> >> I can't see why Java's Default Constructor [1] rule does not apply
>> >> here?
>> >
>> > Well, me neither ;) Maybe it’s got to do with the way we instantiate
>> > the class via reflection? I didn’t track this down yet (I should
>> > probably do so).
>> >
>> >
>> >> /Andy
>> >> http://docs.oracle.com/javase/specs/jls/se7/html/jls-8.html#jls-8.8.9
>> >>
>> >> On 7 April 2016 at 17:58, Christian Grün <christian.gr...@gmail.com>
>> >> wrote:
>> >>>
>> >>> > No constructor is the issue. Adding
>> >>> > public CR_xquery_31_20151217() {}
>> >>> > to java src fixes it.
>> >>>
>> >>> Thanks! @Gunther: Do you think such a dummy constructor could be added
>> >>> to the Java class?
>> >>>
>> >>>
>> >>>
>> >>> > On 7 April 2016 at 16:05, Andy Bunce <bunce.a...@gmail.com> wrote:
>> >>> >>
>> >>> >> C:\Program Files (x86)\BaseX\bin
>> >>> >> +>basex -d
>> >>> >> BaseX 8.4.3 beta d7bbbe7 [Standalone]
>> >>> >> Try 'help' to get more information.
>> >>> >> > xquery import module namespace
>> >>> >> > p="org.basex.modules.CR_xquery_31_20151217";2
>> >>> >> Creating Database...
>> >>> >> . 27.04 ms (25844 KB)
>> >>> >> Creating Database...
>> >>> >> . 4.83 ms (25844 KB)
>> >>> >> Creating Database...
>> >>> >> . 5.0 ms (25844 KB)
>> >>> >> Creating Database...
>> >>> >> . 3.52 ms (26509 KB)
>> >>> >> Creating Database...
>> >>> >> . 4.36 ms (26509 KB)
>> >>> >> Creating Database...
>> >>> >> . 8.26 ms (26509 KB)
>> >>> >> Creating Database...
>> >>> >> . 8.37 ms (26509 KB)
>> >>> >> Creating Database...
>> >>> >> . 4.32 ms (27175 KB)
>> >>> >> Creating Database...
>> >>> >> . 11.38 ms (27175 KB)
>> >>> >> java.lang.InstantiationException:
>> >>> >> org.basex.modules.CR_xquery_31_20151217
>> >>> >> at java.lang.Class.newInstance(Unknown Source)
>> >>> >> at
>> >>> >>
>> >>> >> org.basex.query.util.pkg.ModuleLoader.addImport(ModuleLoader.java:124)
>> >>> >> at
>> >>> >> org.basex.query.QueryParser.importModule(QueryParser.java:772)
>> >>> >> at
>> >>> >> org.basex.query.QueryParser.importModules(QueryParser.java:758)
>> >>> >> at org.basex.query.QueryParser.parseMain(QueryParser.java:172)
>> >>> >> at
>> >>> >> org.basex.query.QueryContext.parseMain(QueryContext.java:223)
>> >>> >> at org.basex.query.QueryProcessor.parse(QueryProcessor.java:57)
>> >>> >> at org.basex.core.cmd.AQuery.parse(AQuery.java:145)
>> >>> >> at org.basex.core.cmd.AQuery.updates(AQuery.java:159)
>> >>> >> at org.basex.core.cmd.AQuery.updating(AQuery.java:267)
>> >>> >> at org.basex.core.Command.execute(Command.java:94)
>> >>> >> at
>> >>> >> org.basex.api.client.LocalSession.execute(LocalSession.java:132)
>> >>> >> at org.basex.api.client.Session.execute(Session.java:36)
>> >>> >> at org.basex.core.CLI.execute(CLI.java:103)
>> >>> >> at org.basex.core.CLI.execute(CLI.java:87)
>> >>> >> at org.basex.BaseX.console(BaseX.java:191)
>> >>> >> at org.basex.BaseX.<init>(BaseX.java:166)
>> >>> >> at org.basex.BaseX.main(BaseX.java:42)
>> >>> >> Caused by: java.lang.NoSuchMethodException:
>> >>> >> org.basex.modules.CR_xquery_31_20151217.<init>()
>> >>> >> at java.lang.Class.getConstructor0(Unknown Source)
>> >>> >> ... 18 more
>> >>> >> org.basex.query.QueryException: Could not instantiate
>> >>> >> org.basex.modules.CR_xquery_31_20151217:
>> >>> >> org.basex.modules.CR_xquery_31_20151217.
>> >>> >> at org.basex.query.QueryError.get(QueryError.java:1343)
>> >>> >> at
>> >>> >>
>> >>> >> org.basex.query.util.pkg.ModuleLoader.addImport(ModuleLoader.java:127)
>> >>> >> at
>> >>> >> org.basex.query.QueryParser.importModule(QueryParser.java:772)
>> >>> >> at
>> >>> >> org.basex.query.QueryParser.importModules(QueryParser.java:758)
>> >>> >> at org.basex.query.QueryParser.parseMain(QueryParser.java:172)
>> >>> >> at
>> >>> >> org.basex.query.QueryContext.parseMain(QueryContext.java:223)
>> >>> >> at org.basex.query.QueryProcessor.parse(QueryProcessor.java:57)
>> >>> >> at org.basex.core.cmd.AQuery.parse(AQuery.java:145)
>> >>> >> at org.basex.core.cmd.AQuery.updates(AQuery.java:159)
>> >>> >> at org.basex.core.cmd.AQuery.updating(AQuery.java:267)
>> >>> >> at org.basex.core.Command.execute(Command.java:94)
>> >>> >> at
>> >>> >> org.basex.api.client.LocalSession.execute(LocalSession.java:132)
>> >>> >> at org.basex.api.client.Session.execute(Session.java:36)
>> >>> >> at org.basex.core.CLI.execute(CLI.java:103)
>> >>> >> at org.basex.core.CLI.execute(CLI.java:87)
>> >>> >> at org.basex.BaseX.console(BaseX.java:191)
>> >>> >> at org.basex.BaseX.<init>(BaseX.java:166)
>> >>> >> at org.basex.BaseX.main(BaseX.java:42)
>> >>> >> Caused by: java.lang.InstantiationException:
>> >>> >> org.basex.modules.CR_xquery_31_20151217
>> >>> >> at java.lang.Class.newInstance(Unknown Source)
>> >>> >> at
>> >>> >>
>> >>> >> org.basex.query.util.pkg.ModuleLoader.addImport(ModuleLoader.java:124)
>> >>> >> ... 16 more
>> >>> >> Caused by: java.lang.NoSuchMethodException:
>> >>> >> org.basex.modules.CR_xquery_31_20151217.<init>()
>> >>> >> at java.lang.Class.getConstructor0(Unknown Source)
>> >>> >> ... 18 more
>> >>> >> org.basex.query.QueryException: Could not instantiate
>> >>> >> org.basex.modules.CR_xquery_31_20151217:
>> >>> >> org.basex.modules.CR_xquery_31_20151217.
>> >>> >> at org.basex.query.QueryError.get(QueryError.java:1343)
>> >>> >> at
>> >>> >>
>> >>> >> org.basex.query.util.pkg.ModuleLoader.addImport(ModuleLoader.java:127)
>> >>> >> at
>> >>> >> org.basex.query.QueryParser.importModule(QueryParser.java:772)
>> >>> >> at
>> >>> >> org.basex.query.QueryParser.importModules(QueryParser.java:758)
>> >>> >> at org.basex.query.QueryParser.parseMain(QueryParser.java:172)
>> >>> >> at
>> >>> >> org.basex.query.QueryContext.parseMain(QueryContext.java:223)
>> >>> >> at org.basex.query.QueryProcessor.parse(QueryProcessor.java:57)
>> >>> >> at org.basex.core.cmd.AQuery.parse(AQuery.java:145)
>> >>> >> at org.basex.core.cmd.AQuery.updates(AQuery.java:159)
>> >>> >> at org.basex.core.cmd.AQuery.updating(AQuery.java:267)
>> >>> >> at org.basex.core.Command.execute(Command.java:94)
>> >>> >> at
>> >>> >> org.basex.api.client.LocalSession.execute(LocalSession.java:132)
>> >>> >> at org.basex.api.client.Session.execute(Session.java:36)
>> >>> >> at org.basex.core.CLI.execute(CLI.java:103)
>> >>> >> at org.basex.core.CLI.execute(CLI.java:87)
>> >>> >> at org.basex.BaseX.console(BaseX.java:191)
>> >>> >> at org.basex.BaseX.<init>(BaseX.java:166)
>> >>> >> at org.basex.BaseX.main(BaseX.java:42)
>> >>> >> Caused by: java.lang.InstantiationException:
>> >>> >> org.basex.modules.CR_xquery_31_20151217
>> >>> >> at java.lang.Class.newInstance(Unknown Source)
>> >>> >> at
>> >>> >>
>> >>> >> org.basex.query.util.pkg.ModuleLoader.addImport(ModuleLoader.java:124)
>> >>> >> ... 16 more
>> >>> >> Caused by: java.lang.NoSuchMethodException:
>> >>> >> org.basex.modules.CR_xquery_31_20151217.<init>()
>> >>> >> at java.lang.Class.getConstructor0(Unknown Source)
>> >>> >> ... 18 more
>> >>> >> org.basex.core.BaseXException: Stopped at ., 1/68:
>> >>> >> [XQST0059] Could not instantiate
>> >>> >> org.basex.modules.CR_xquery_31_20151217:
>> >>> >> org.basex.modules.CR_xquery_31_20151217.
>> >>> >> at org.basex.core.Command.execute(Command.java:101)
>> >>> >> at
>> >>> >> org.basex.api.client.LocalSession.execute(LocalSession.java:132)
>> >>> >> at org.basex.api.client.Session.execute(Session.java:36)
>> >>> >> at org.basex.core.CLI.execute(CLI.java:103)
>> >>> >> at org.basex.core.CLI.execute(CLI.java:87)
>> >>> >> at org.basex.BaseX.console(BaseX.java:191)
>> >>> >> at org.basex.BaseX.<init>(BaseX.java:166)
>> >>> >> at org.basex.BaseX.main(BaseX.java:42)
>> >>> >> Caused by: org.basex.query.QueryException: Could not instantiate
>> >>> >> org.basex.modules.CR_xquery_31_20151217:
>> >>> >> org.basex.modules.CR_xquery_31_20151217.
>> >>> >> at org.basex.query.QueryError.get(QueryError.java:1343)
>> >>> >> at
>> >>> >>
>> >>> >> org.basex.query.util.pkg.ModuleLoader.addImport(ModuleLoader.java:127)
>> >>> >> at
>> >>> >> org.basex.query.QueryParser.importModule(QueryParser.java:772)
>> >>> >> at
>> >>> >> org.basex.query.QueryParser.importModules(QueryParser.java:758)
>> >>> >> at org.basex.query.QueryParser.parseMain(QueryParser.java:172)
>> >>> >> at
>> >>> >> org.basex.query.QueryContext.parseMain(QueryContext.java:223)
>> >>> >> at org.basex.query.QueryProcessor.parse(QueryProcessor.java:57)
>> >>> >> at org.basex.core.cmd.AQuery.parse(AQuery.java:145)
>> >>> >> at org.basex.core.cmd.AQuery.updates(AQuery.java:159)
>> >>> >> at org.basex.core.cmd.AQuery.updating(AQuery.java:267)
>> >>> >> at org.basex.core.Command.execute(Command.java:94)
>> >>> >> ... 7 more
>> >>> >> Caused by: java.lang.InstantiationException:
>> >>> >> org.basex.modules.CR_xquery_31_20151217
>> >>> >> at java.lang.Class.newInstance(Unknown Source)
>> >>> >> at
>> >>> >>
>> >>> >> org.basex.query.util.pkg.ModuleLoader.addImport(ModuleLoader.java:124)
>> >>> >> ... 16 more
>> >>> >> Caused by: java.lang.NoSuchMethodException:
>> >>> >> org.basex.modules.CR_xquery_31_20151217.<init>()
>> >>> >> at java.lang.Class.getConstructor0(Unknown Source)
>> >>> >> ... 18 more
>> >>> >> Stopped at ., 1/68:
>> >>> >> [XQST0059] Could not instantiate
>> >>> >> org.basex.modules.CR_xquery_31_20151217:
>> >>> >> org.basex.modules.CR_xquery_31_20151217.
>> >>> >> >
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >>
>> >>> >> On 7 April 2016 at 15:55, Christian Grün
>> >>> >> <christian.gr...@gmail.com>
>> >>> >> wrote:
>> >>> >>>
>> >>> >>> > If instead I install it to the repo. It appears as
>> >>> >>> > "org.basex.modules.CR_xquery_31_20151217"
>> >>> >>> > but
>> >>> >>> > import module namespace
>> >>> >>> > p="org.basex.modules.CR_xquery_31_20151217";
>> >>> >>> > Fails with
>> >>> >>> > Could not instantiate org.basex.modules.CR_xquery_31_20151217:
>> >>> >>> > org.basex.modules.CR_xquery_31_20151217
>> >>> >>> >
>> >>> >>> > Any ideas where the problem could be?
>> >>> >>>
>> >>> >>> It sounds as if it’s not possible to create an instance of this
>> >>> >>> class.
>> >>> >>> Could you possibly forward the stack trace (triggered by -d)?
>> >>> >>
>> >>> >>
>> >>> >
>> >>
>> >>
