Using createObject, I am unable to call a method inside a java inner class. Backstory: I’m attempting to locally use the maxmind database and reader API. This allows me to get location data on an IP address. Along with their database and reader, maxmind also has a simple caching object which can be used to speed up API requests. I am able to get their database reader API up and running, however, I am struggling including the cache object and hoped someone here may have a better idea on what I could try. This is what I’m attempting to replicate with Lucee:

new DatabaseReader.Builder(file).withCache(new CHMCache()).build();

Builder

is an inner class of

DatabaseReader

. I’m able to init() Builder (and subsequently the database reader API) using the

$

notation as defined in the Lucee docs. However I am unable to call the Builder

withCache()

method. The API docs for

build()

and

withCache()

are here. This is the code I’m running; 1st what works, and then 2nd my failing attempt at including the cache object. 1st: This works, it creates a database using a maxmind DB file, and the database reader API:

<cfscript>

ip = '209.85.231.104';

// build the database file object
dbfile = "/pathto/geoip/lib/GeoLite2-Country.mmdb";
db = createObject("java","java.io.File").init(expandpath(dbfile));

// initiate the database reader object
reader = createObject("java", "com.maxmind.geoip2.DatabaseReader$Builder",expandpath('/pathto/geoip/lib/geoip2-3.0.1.jar')).init(db).build();

// create ipaddr class 
iaddrClass=CreateObject("java", "java.net.InetAddress");

// test
address=iaddrClass.getByName(ip);
writedump(reader.country(address).getCountry().getName());
writedump(reader.country(address).getCountry().getIsoCode());


</cfscript>

2nd: This doesn't work, I create the cache object and attempt to call it on the builder object with

.withCache(maxMind_CHMCaching)

and returns the following error:

No matching Method/Function for com.maxmind.geoip2.DatabaseReader$Builder.withCache(com.maxmind.db.CHMCache) found

<cfscript>

ip = '209.85.231.104';

// build the database object
dbfile = "/pathto/geoip/lib/GeoLite2-Country.mmdb";
db = createObject("java","java.io.File").init(expandpath(dbfile));

// initiate a maxmind caching object
maxMind_CHMCaching = createObject("java", "com.maxmind.db.CHMCache",expandpath('/pathto/geoip/lib/maxmind-db-2.0.0.jar')).init();

// initiate the database reader object using cache
reader = createObject("java", "com.maxmind.geoip2.DatabaseReader$Builder",expandpath('/pathto/geoip/lib/geoip2-3.0.1.jar')).init(db).withCache(maxMind_CHMCaching).build();

// create ipaddr class 
iaddrClass=CreateObject("java", "java.net.InetAddress");

// test
address=iaddrClass.getByName(ip);
writedump(reader.country(address).getCountry().getName());
writedump(reader.country(address).getCountry().getIsoCode());


</cfscript>

If anyone has an idea of what I should try next I would appreciate the feedback.

@steveduke I would try adding the jars to

this.javaSettings

and see if that works

@bdw429s Thanks for the response. I already had the geoip jar directory path in

this.javaSettings

. I changed it to specify each jar file and still no luck. I also modified the createObject to include an array of all the jar files too, and still this fails. Your thoughts on how createObject loads the class may have some bearing on whats happening. I dumped out the Builder, and it does have the withCache() method:

I already had the geoip jar directory path in

this.javaSettings

. I changed it to specify each jar file and still no luck. I also modified the createObject to include an array of all the jar files too, and still this fails.

Hold on-- you have the jar files in the

this.javaSettings

AND in the arguments to createObject? That in itself seems problematic. What happens if you use this.javaSettings and don't pass anything to createObject at all?

Kinda, I just (15 minutes ago) cycled through different combinations to test. However, you are correct with the paths in two places being the issue ! I modified this:

"com.maxmind.geoip2.DatabaseReader$Builder",expandpath('/pathto/geoip/lib/geoip2-3.0.1.jar')).init(db).withCache(maxMind_CHMCaching).build();

to this:

reader = createObject("java", "com.maxmind.geoip2.DatabaseReader$Builder" ).init(db).withCache(maxMind_CHMCaching).build();

And it works!

FWIW, I consider this to be a bug in Lucee that it requires the same class loader to have loaded the interface and the implementation.

I saw

Not sure what you mean-

so having

this.javaSettings

in my

Application.cfc

but removing the jar list from createObject means Lucee uses the same class loader. Hence, the withCache() method is found.

Basically, yes