Re: Accepting Object[] as an acceptable input to setObject with Types.ARRAY?

From: Steven Schlansker <stevenschlansker(at)gmail(dot)com>
To: Oliver Jowett <oliver(at)opencloud(dot)com>
Cc: pgsql-jdbc(at)postgresql(dot)org
Subject: Re: Accepting Object[] as an acceptable input to setObject with Types.ARRAY?
Date: 2011-06-03 23:05:45
Message-ID: BBC948C2-9D1F-4651-8D7E-31297217312C@gmail.com
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On Jun 3, 2011, at 3:47 PM, Oliver Jowett wrote:

> On 4 June 2011 08:04, Steven Schlansker <stevenschlansker(at)gmail(dot)com> wrote:
>
>> It looks like adding support for such a fix to the Postgres driver would be extremely easy. In particular looking around AbstractJdbc2Statement.java:1732
>>
>> case Types.ARRAY:
>> if (in instanceof Array)
>> setArray(parameterIndex, (Array)in);
>> else
>> throw new PSQLException(GT.tr("Cannot cast an instance of {0} to type {1}", new Object[]{in.getClass().getName(),"Types.ARRAY"}), PSQLState.INVALID_PARAMETER_TYPE);
>> break;
>>
>> it could check if in is an array type and if so synthesize the Array object necessary.
>>
>> Does this sound like a reasonable feature request? Did I miss an easier way to do this? It is probably outside of the JDBC spec but it at least has some traction with H2...
>
> How do you determine the type of the (server-side) array elements?
> i.e. what is the typename that setObject would pass to createArrayOf()
> when it encountered an Object[]?

The patch I put in another branch of this thread does basic type introspection. It handles all the primitive types, wrapped types, and a few SQL types (i.e. Date, Time, Timestamp, byte[])

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