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From Mark <javam...@gmail.com>
Subject Re: indexing java byte code in classes / jars
Date Fri, 08 May 2015 21:14:58 GMT
https://searchcode.com/

looks really interesting, however I want to crunch as much searchable
aspects out of jars sititng on a classpath or under a project structure...

Really early days so I'm open to any suggestions



On 8 May 2015 at 22:09, Mark <javamark@gmail.com> wrote:

> To answer why bytecode - because mostly the use case I have is looking to
> index as much detail from jars/classes.
>
> extract class names,
> method names
> signatures
> packages / imports
>
> I am considering using ASM in order to generate an analysis view of the
> class
>
> The sort of usecases I have would be method / signature searches.
>
> For example;
>
> 1) show any classes with a method named parse*
>
> 2) show any classes with a method named parse that passes in a type *json*
>
> ...etc
>
> In the past I have written something to reverse out javadocs from just
> java bytecode, using solr would move this idea considerably much more
> powerful.
>
> Thanks for the suggestions so far
>
>
>
>
>
>
>
> On 8 May 2015 at 21:19, Erik Hatcher <erik.hatcher@gmail.com> wrote:
>
>> Oh, and sorry, I omitted a couple of details:
>>
>> # creating the “java” core/collection
>> bin/solr create -c java
>>
>> # I ran this from my Solr source code checkout, so that
>> SolrLogFormatter.class just happened to be handy
>>
>>         Erik
>>
>>
>>
>>
>> > On May 8, 2015, at 4:11 PM, Erik Hatcher <erik.hatcher@gmail.com>
>> wrote:
>> >
>> > What kinds of searches do you want to run?  Are you trying to extract
>> class names, method names, and such and make those searchable?   If that’s
>> the case, you need some kind of “parser” to reverse engineer that
>> information from .class and .jar files before feeding it to Solr, which
>> would happen before analysis.   Java itself comes with a javap command that
>> can do this; whether this is the “best” way to go for your scenario I don’t
>> know, but here’s an interesting example pasted below (using Solr 5.x).
>> >
>> > —
>> > Erik Hatcher, Senior Solutions Architect
>> > http://www.lucidworks.com
>> >
>> >
>> > javap
>> build/solr-core/classes/java/org/apache/solr/SolrLogFormatter.class >
>> test.txt
>> > bin/post -c java test.txt
>> >
>> > now search for "coreInfoMap"
>> http://localhost:8983/solr/java/browse?q=coreInfoMap
>> >
>> > I tried to be cleverer and use the stdin option of bin/post, like this:
>> > javap
>> build/solr-core/classes/java/org/apache/solr/SolrLogFormatter.class |
>> bin/post -c java -url http://localhost:8983/solr/java/update/extract
>> -type text/plain -params "literal.id=SolrLogFormatter" -out yes -d
>> > but something isn’t working right with the stdin detection like that
>> (it does work to `cat test.txt | bin/post…` though, hmmm)
>> >
>> > test.txt looks like this, `cat test.txt`:
>> > Compiled from "SolrLogFormatter.java"
>> > public class org.apache.solr.SolrLogFormatter extends
>> java.util.logging.Formatter {
>> >  long startTime;
>> >  long lastTime;
>> >  java.util.Map<org.apache.solr.SolrLogFormatter$Method,
>> java.lang.String> methodAlias;
>> >  public boolean shorterFormat;
>> >  java.util.Map<org.apache.solr.core.SolrCore,
>> org.apache.solr.SolrLogFormatter$CoreInfo> coreInfoMap;
>> >  public java.util.Map<java.lang.String, java.lang.String> classAliases;
>> >  static java.lang.ThreadLocal<java.lang.String> threadLocal;
>> >  public org.apache.solr.SolrLogFormatter();
>> >  public void setShorterFormat();
>> >  public java.lang.String format(java.util.logging.LogRecord);
>> >  public void appendThread(java.lang.StringBuilder,
>> java.util.logging.LogRecord);
>> >  public java.lang.String _format(java.util.logging.LogRecord);
>> >  public java.lang.String getHead(java.util.logging.Handler);
>> >  public java.lang.String getTail(java.util.logging.Handler);
>> >  public java.lang.String formatMessage(java.util.logging.LogRecord);
>> >  public static void main(java.lang.String[]) throws java.lang.Exception;
>> >  public static void go() throws java.lang.Exception;
>> >  static {};
>> > }
>> >
>> >> On May 8, 2015, at 3:31 PM, Mark <javamark@gmail.com> wrote:
>> >>
>> >> I looking to use Solr search over the byte code in Classes and Jars.
>> >>
>> >> Does anyone know or have experience of Analyzers, Tokenizers, and Token
>> >> Filters for such a task?
>> >>
>> >> Regards
>> >>
>> >> Mark
>> >
>>
>>
>

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