From: | dmp <danap(at)ttc-cmc(dot)net> |
---|---|
To: | Saneesh Apte <san(at)calccit(dot)org>, pgsql-bugs(at)postgresql(dot)org |
Subject: | Re: [JDBC] JDBC: 2 bugs: Getting a smallint array actually gets an integer array and return type of a boolean array is bit. |
Date: | 2010-06-29 19:03:26 |
Message-ID: | 4C2A437E.80103@ttc-cmc.net |
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Lists: | pgsql-bugs pgsql-jdbc |
> Hi,
>
> I think I found two bugs (and I hope I am not wasting everyone's
> time).
> One is minor: the base type of a boolean[] is java.sql.Types.BIT
> instead or java.sql.Types.BOOLEAN. At the very least shouldn't these
> be aliases for the same type?
>
> And secondly the returned type from a smallint[] is an Integer[]
> instead of a Short[].
>
>
>
> So running this code:
The running of the supplied code also gives the same results with
PostgreSQL 8.3.3
results:
========================================
sun(dot)jdbc(dot)odbc(dot)JdbcOdbcDriver(at)fc9944: 2.1
org(dot)postgresql(dot)Driver(at)8b819f: 8.4
PostgreSQL 8.3.3 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.4.6
Integer[]
1 2
int4: 4 4
END Integer[]
Boolean[]
false true
bool: 16 -7 -7
END Boolean[]
Short[]
java.lang.ClassCastException: [Ljava.lang.Integer; cannot be cast to
[Ljava.lang.Short;
========================================
The 8.4 JDBC Driver though does gives a consistent result as past
versions via the
tableMetaData.getColumnClassName() & tableMetaData.getColumnTypeName()
for the base types, integer, smallint, and boolean.
System.out.println(i + " " + colNameString + " " +
columnClass + " " + columnType + " " +
columnSize);
3 int_type java.lang.Integer int4 11
2 smallint_type java.lang.Integer int2 6
21 boolean_type java.lang.Boolean bool 1
1 ia java.sql.Array _int4 11
2 sa java.sql.Array _int2 6
3 ba java.sql.Array _bool 1
Attached slight modification to NewClass to correctly compile and drop
table if run
more than once.
danap.
Attachment | Content-Type | Size |
---|---|---|
NewClass2.java | text/plain | 3.3 KB |
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