apex-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Chinmay Kolhatkar <chin...@apache.org>
Subject Re: Pojoutils getters return type?
Date Mon, 09 May 2016 07:20:41 GMT
Hi Yogi,

You can take a look at the unit tests for PojoUtils (PojoUtilsTest).. That
has ample examples describing the usage for various different cases.

Thanks,
Chinmay.


On Mon, May 9, 2016 at 11:06 AM, Pradeep A. Dalvi <prad@apache.org> wrote:

> Try following:
>
> partitionColumnValue = (String)(getters.get(i).get(tuple));
>
> On Mon, May 9, 2016 at 10:59 AM, Yogi Devendra <yogidevendra@apache.org>
> wrote:
>
>> Hi,
>>
>> I am using code similar to following for generating getters.
>> ---
>> Class<?> fqcn = tuple.getClass();
>> getter = PojoUtils.createGetter(fqcn, "aPartyPhone", String.class);
>> logger.debug("getter {}", getter.getClass().getCanonicalName());
>> getters.add(getter);
>> ---
>>
>> What should be the return type of this getter? And how should I use this
>> getter? I am using it as follows:
>> ---
>> partitionColumnValue = ((Getter<Object,
>> String>)getters.get(i)).get(tuple);
>> ---
>>
>> and getting following exception.
>> ---
>> java.lang.ClassCastException: SC cannot be cast to
>> com.datatorrent.lib.util.PojoUtils$Getter
>> ---
>>
>> Can you suggest correct way of using this getter? Here is the debug log
>> for the same.
>> ---
>> 2016-05-09 10:41:55,296 DEBUG
>> com.datatorrent.contrib.hive.FSPojoToHiveOperator: type
>> com.datatorrent.contrib.hive.FSPojoToHiveOperator.FIELD_TYPE
>> 2016-05-09 10:41:55,296 DEBUG com.datatorrent.lib.util.PojoUtils: class
>> com.datatorrent.solution.objects.CDR aPartyPhone class java.lang.String
>> interface com.datatorrent.lib.util.PojoUtils$Getter
>> 2016-05-09 10:41:55,296 DEBUG
>> com.datatorrent.lib.expression.JavaExpressionParser:
>> com.datatorrent.solution.objects.CDR does not have field aPartyPhone.
>> Proceeding to locate a getter method.
>> 2016-05-09 10:41:55,297 DEBUG com.datatorrent.lib.util.PojoUtils: code:
>> return
>> ((java.lang.String)((com.datatorrent.solution.objects.CDR)(object)).getAPartyPhone());
>> 2016-05-09 10:41:55,300 DEBUG
>> com.datatorrent.contrib.hive.FSPojoToHiveOperator: getter SC
>> ---
>>
>> ~ Yogi
>>
>
>

Mime
View raw message