Re: Use java interface "setArray" to insert the array of user-defined type to table - Mailing list pgsql-interfaces

From Dave Cramer
Subject Re: Use java interface "setArray" to insert the array of user-defined type to table
Date
Msg-id CADK3HHK7Rs_MYCibf=Uki17-j_ixjOfbkPij4fYuoKZM3HnhRg@mail.gmail.com
Whole thread Raw
In response to Use java interface "setArray" to insert the array of user-defined type to table  (Charles Kong <kdy77k@gmail.com>)
List pgsql-interfaces



On Wed, 23 Feb 2022 at 09:58, Charles Kong <kdy77k@gmail.com> wrote:
Hi all,
I use a user-defined type in “schema.sql”
CREATE TYPE infoEntity AS (
    "entity_id" bigint,
    "seq" integer,
    "message" varchar(255)
)

in java code:
java_infoEntity[] infoEntityArray; //java_infoEntity is the class with the same member variables.
infoEntityArray = new java_infoEntity[3];
infoEntityArray[0] = new java_infoEntity();
....

//info_Entity's type is user-defined type "infoEntity". 
sql = "insert into \"T_abc\" (info_Entity) values(?);";
statement = conn.prepareStatement( sql );
Array array = conn.createArrayOf("infoEntity",  infoEntityArray);
statement.setArray(1,array);
statement.addBatch();
statement.executeBatch();
....
....
Sql throw exception: 
sqlException:  SQLState: 22P02 Error Code: 0 Error Message: Batch entry 0 insert into "T_abc" (info_Entity) values('{"com.xxx.java_infoEntity@597d57aa"}') was aborted: ERROR: malformed record literal: "com.xxx.java_infoEntity@597d57aa"

How to cope with it?


The JDBC driver does not know how to deal with user defined types. You will have to write code to serialize the type yourself.

Regards,
Dave 

pgsql-interfaces by date:

Previous
From: Charles Kong
Date:
Subject: Use java interface "setArray" to insert the array of user-defined type to table
Next
From:
Date:
Subject: Can 32bit libpq to access 64bit postgres