Hi Lukas,
The schema for the table is not relevant in this case because it doesn't
contain the array field, the array field is constructed via *array_agg*
aggregation function. Simple example:
select array_agg(some_field) as theArray
from sometable
group by some_field
CREATE TABLE sometable (
some_field varchar(30)
);
On Wednesday, September 6, 2017 at 2:00:12 AM UTC-4, Lukas Eder wrote:
>
> Hi Max,
>
> In principle, that sort of thing should work, but perhaps the PostgreSQL
> JDBC driver isn't really delivering an array but a wrapper for an array for
> your query? What's the DDL of sometable?
>
> Cheers,
> Lukas
>
> 2017-09-06 0:12 GMT+02:00 Max Kremer <[email protected] <javascript:>>:
>
>> Hi,
>>
>> I have a SQL result set that includes a varchar array as one of the
>> columns. I'm mapping over the Result<Record> returned by fetch() and
>> manually populating a pojo but I'm having trouble populating the String[]
>> array field of the pojo.
>>
>>
>>
>> d.fetch("select array_agg(some_field) as theArray from sometable group
>> by some_field")
>> .stream()
>> .map(r -> {
>> SalesTouchPoint stp = new SalesTouchPoint();
>> stp.setAudience(r.getValue("people", Integer.class));
>> stp.setEpc(r.getValue("epc", Double.class));
>> stp.setTouchPoints(r.getValue("theArray", String[].
>> class));
>> return stp;
>> })
>> .collect(Collectors.toList());
>>
>>
>>
>>
>> As you can see from the above code I'm using Record.getValue (or
>> Record.get) to access the column "theArray" from the result set. I'm
>> getting a class cast exception:
>>
>> Caused by: org.jooq.exception.DataTypeException: Cannot convert from [
>> Ljava.lang.String;@5a6782c3 (class java.lang.String) to class [Ljava.lang
>> .String;
>> at org.jooq.tools.Convert$ConvertAll.fail(Convert.java:1118) ~[na:na]
>> at org.jooq.tools.Convert$ConvertAll.from(Convert.java:1007) ~[na:na]
>> at org.jooq.tools.Convert.convert0(Convert.java:316) ~[na:na]
>> at org.jooq.tools.Convert.convert(Convert.java:308) ~[na:na]
>> at org.jooq.tools.Convert.convert(Convert.java:380) ~[na:na]
>> at org.jooq.impl.AbstractRecord.get(AbstractRecord.java:260) ~[na:na]
>> at org.jooq.impl.AbstractRecord.getValue(AbstractRecord.java:1222) ~[na:
>> na]
>>
>>
>> Everything I've read in the docs suggests that JOOQ handles SQL array
>> types just fine. What am I doing wrong?
>>
>>
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