[
https://issues.apache.org/jira/browse/PYLUCENE-21?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Andi Vajda resolved PYLUCENE-21.
--------------------------------
Resolution: Not A Problem
Please ask questions on [email protected], JIRA is for bugs.
To your question: you didn't give me your JCC invocation so I can only guess
that you didn't ask for App$Embedded to be wrapped. The following steps work
for me:
$ python -m jcc.__main__ --shared --arch x86_64 --classpath `pwd` home.App
home.App\$Embedded --rename home.App\$Embedded=AppEmbedded --python jcchello
--build --install
$ python
>>> from jcchello import *
>>> initVM()
<jcc.JCCEnv object at 0x10040a0d8>
>>> App().hello()
hello from App method
>>> AppEmbedded(App()).hello2()
hello from App.Embedded method
>>>
> JCC Nested Java Object Access from Python
> -----------------------------------------
>
> Key: PYLUCENE-21
> URL: https://issues.apache.org/jira/browse/PYLUCENE-21
> Project: PyLucene
> Issue Type: Question
> Environment: generic
> Reporter: Craig Rickle
> Priority: Minor
>
> Is it possible to access a nested object from python using jcc?
> package home;
> public class App
> {
> public class Embedded {
> public void hello2() {
> System.out.println("hello from App.Embedded method");
> }
> }
>
> public void hello() {
> System.out.println("hello from App method");
> }
> public static void main( String[] args )
> {
> System.out.println( "Hello World!" );
> }
> }
> Once processed by jcc,
> $ python -c "import jcchello;from jcchello import
> initVM,CLASSPATH,App;initVM(classpath=CLASSPATH);a = App();a.hello();"
> hello from App method
> is ok, but,
> $ python -c "import jcchello;from jcchello import
> initVM,CLASSPATH,App;initVM(classpath=CLASSPATH);a = App();a.hello2();"
> Traceback (most recent call last):
> File "<string>", line 1, in <module>
> AttributeError: 'App' object has no attribute 'hello2'
> does not resolve. We might say, ok, makes sense, lets try to --rename
> home.App\$Embedded=AppEmbedded, then, import an AppEmbedded object, but this
> approach has not worked either in the numerous forms that I have tried.
> For completeness, a jar listing follows:
> $ jar tf jcc-hello/target/jcc-hello-1.0-SNAPSHOT.jar
> META-INF/
> META-INF/MANIFEST.MF
> home/
> home/App$Embedded.class
> home/App.class
> META-INF/maven/
> META-INF/maven/home/
> META-INF/maven/home/jcc-hello/
> META-INF/maven/home/jcc-hello/pom.xml
> META-INF/maven/home/jcc-hello/pom.properties
> In reality, hello2() will effectively be a result set iterator written by an
> external group back to the python caller. Current thinking is to segment
> this portion of code as a new java method and apply jcc for subsequent
> integration. This would avoid the need to access the nested logic from
> python, but, would require blocking up the resulting data. Would appreciate
> any thoughts on this.
> Thanks in advance,
> Craig
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