From: shun at datasection.co.jp (Shunsuke Ikegami)
Date: Tue, 26 Jul 2005 16:45:36 +0900
Subject: [Pljava-dev] create oid and WARNING
In-Reply-To: <thhal-0jmC8A2cD77QTovpfv8d56h5FKHNW61@mailblocks.com>
References: <thhal-0jmC8A2cD77QTovpfv8d56h5FKHNW61@mailblocks.com>
Message-ID: <93C591B602B32Fshun@datasection.co.jp>


Thomas.
Thank you.

I resolved WARNING message problem.
LargeObject needed close().
It was simple problem.


--- Solved
import java.sql.SQLException;
import java.util.logging.Logger;

import org.postgresql.pljava.internal.LargeObject;

public class CreateOidTest {
    public static int createOid() {
        try {
            LargeObject obj = LargeObject.create(LargeObject.INV_WRITE);
            Logger.getAnonymousLogger().info("create OID");
	    obj.close();  // needed
        } catch (SQLException e) {
            e.printStackTrace();
        }
        
        return 1;
    }
}
----



Thank you,
Shunsuke Ikegami



>Probably a PostgreSQL bug that has been fixed in later versions. Post a 
>query to the pgsql-hackers at postgresql.org  and ask about the warnings. 
>Perhaps they can give you more info.
>
>Regards,
>Thomas Hallgren
>
>Shunsuke Ikegami wrote:
>
>>Hello,
>>
>>I tried to use LargeObject with PL/Java.
>>When I create oid, I receive WARNING message.
>>Oid is OK.
>>
>>- pljava-1.1.0
>>- psql (PostgreSQL) 7.4.7
>>- java version "1.4.2_04"
>>- Fedora Core 2
>>
>>When I tried with psql 8.0.3, I don't receive WARNING.
>>Do you have some idea?
>>
>>
>>--- I tried. ---
>>import java.sql.SQLException;
>>import java.util.logging.Logger;
>>
>>import org.postgresql.pljava.internal.LargeObject;
>>
>>public class CreateOidTest {
>>    public static int createOid() {
>>        try {
>>            LargeObject obj = LargeObject.create(LargeObject.INV_WRITE);
>>            Logger.getAnonymousLogger().info("create OID");
>>        } catch (SQLException e) {
>>            e.printStackTrace();
>>        }
>>        
>>        return 1;
>>    }
>>}
>>
>>
>>--- result 
>>
>>Jul 22 10:12:45 tsukuyomi postgres[12885]: [100021-1] WARNING:  relcache 
>>reference leak: relation "pg_largeobject" has refcnt 2 instead of 0
>>Jul 22 10:12:45 tsukuyomi postgres[12885]: [100022-1] WARNING:  relcache 
>>reference leak: relation "pg_largeobject_loid_pn_index" has refcnt 2 
>>instead 
>>of 0
>>
>>----
>>
>>Regards,
>>Shunsuke Ikegami
>>
>>
>>  
>>
>>>Shunsuke,
>>>The LargeObject support in PL/Java is experimental and in the current 
>>>version, the C-code will not be initialized (hence the error that you 
>>>get). The code is there though, and if you want to play around with it, 
>>>my guess is that the only thing you need to do in order to get it to 
>>>work is to add the line:
>>>
>>>   LargeObject_initialize(fcinfo);
>>>
>>>somewhere near the end of function Type_initialize in the file 
>>>pljava/type/Type.c, recompile and try again.
>>>
>>>Regards,
>>>Thomas Hallgren


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