Re: Eager fetch of Array in one tcp connection

From: Petr Prikryl <peter(dot)prikryl(at)gmail(dot)com>
To: pgsql-jdbc(at)postgresql(dot)org
Subject: Re: Eager fetch of Array in one tcp connection
Date: 2010-09-11 21:24:43
Message-ID: 4C8BF39B.5010809@gmail.com
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So, I found that JDBC needs some aditional information to determine
delimiter (viva opensource drivers). But it is worst , that JDBC driver
hasn't implemented Array<Bytea> and I must use workaround (using strings).
PP

On 09/11/2010 02:32 AM, Maciek Sakrejda wrote:
> What does the server log say?
> ---
> Maciek Sakrejda | System Architect | Truviso
>
> 1065 E. Hillsdale Blvd., Suite 215
> Foster City, CA 94404
> (650) 242-3500 Main
> www.truviso.com
>
>
>
> On Fri, Sep 10, 2010 at 4:53 PM, Petr Prikryl<peter(dot)prikryl(at)gmail(dot)com> wrote:
>
>> Good day,
>> I'm trying to fetch Array in one row. SQL works well, but when I tried to
>> convert org.postgresql.jdbc4.Jdbc4Array to java Array :
>> allowedMAC = (List<byte[]>) mac.getArray();
>>
>> I'm getting exception below.
>> This exception is maybe caused by closed connection by
>> org.springframework.jdbc.core.JdbcTemplate .
>>
>> I tried to find out, how to fetch this org.postgresql.jdbc4.Jdbc4Array
>> directly (I have much rows in result and a need to retrieve everything in
>> one question), but function is trying to connect do DB.
>> How should I fetch everything in one select, am I able to disable those
>> "re-question"?
>> Thanks a lot
>> PP
>>
>>
>>
>>
>> Sep 11, 2010 1:00:07 AM cz.admin24.shdb.db.DAO.SwitchportConfig<init>
>> SEVERE: null
>> org.postgresql.util.PSQLException: An I/O error occured while sending to the
>> backend.
>> at
>> org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:283)
>> at
>> org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:479)
>> at
>> org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:367)
>> at
>> org.postgresql.jdbc2.TypeInfoCache.getArrayDelimiter(TypeInfoCache.java:335)
>> at
>> org.postgresql.jdbc2.AbstractJdbc2Array.buildArrayList(AbstractJdbc2Array.java:165)
>> at
>> org.postgresql.jdbc2.AbstractJdbc2Array.getArrayImpl(AbstractJdbc2Array.java:138)
>> at
>> org.postgresql.jdbc2.AbstractJdbc2Array.getArray(AbstractJdbc2Array.java:110)
>> at
>> cz.admin24.shdb.db.DAO.SwitchportConfig.<init>(SwitchportConfig.java:46)
>> at
>> cz.admin24.shdb.db.DAO.AccessConfigDAOBean.getPortConfigFromDB(AccessConfigDAOBean.java:129)
>> at
>> cz.admin24.shdb.db.DAO.AccessConfigDAOBean.getAllRequestedUpdates(AccessConfigDAOBean.java:92)
>> at
>> cz.admin24.shdb.network.ciscoconf.AccessConfigurator.updateSwitchsports(AccessConfigurator.java:59)
>> at cz.admin24.shdb.network.ciscoconf.App.doUpdate(App.java:38)
>> at cz.admin24.shdb.network.ciscoconf.App.main(App.java:66)
>> Caused by: java.io.IOException: Stream closed
>> at sun.nio.cs.StreamEncoder.ensureOpen(StreamEncoder.java:26)
>> at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:121)
>> at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:212)
>> at org.postgresql.core.PGStream.flush(PGStream.java:507)
>> at
>> org.postgresql.core.v3.QueryExecutorImpl.sendSync(QueryExecutorImpl.java:1107)
>> at
>> org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:256)
>> ... 12 more
>>
>> --
>> Petr Prikryl
>> -----------------------
>> petrprikryl(at)centrum(dot)cz
>> prikryl(at)admin24(dot)cz
>> www.admin24.cz
>>
>>
>> --
>> Sent via pgsql-jdbc mailing list (pgsql-jdbc(at)postgresql(dot)org)
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>>
>>

--
Petr Prikryl
-----------------------
petrprikryl(at)centrum(dot)cz
prikryl(at)admin24(dot)cz
www.admin24.cz

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