Array support
От | Thomas O'Dowd |
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Тема | Array support |
Дата | |
Msg-id | 1114094185.26958.22.camel@localhost.localdomain обсуждение исходный текст |
Ответы |
Re: Array support
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Список | pgsql-jdbc |
Hi all, Currently using the driver postgresql-8.0-310.jdbc3.jar which I downloaded a while ago. Just tried to use it to store a Java String array but it throws an unimplemented exception. A snippet of code that throws the exception would be: String[] strings = new String[] {"one", "two"}; con.prepareStatement("INSERT INTO a (str_array) VALUES (?)"; ps.setObject(1, strings, java.sql.Types.ARRAY); ps.executeUpdate(); (forgive any syntax errors, its just an example) The exception thrown is: Caused by: org.postgresql.util.PSQLException: Unsupported Types value: 2,003 at org.postgresql.jdbc2.AbstractJdbc2Statement.setObject(AbstractJdbc2Statement.java:1621) at org.postgresql.jdbc3.AbstractJdbc3Statement.setObject(AbstractJdbc3Statement.java:1436) at org.postgresql.jdbc2.AbstractJdbc2Statement.setObject(AbstractJdbc2Statement.java:1627) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ... yada yada yada ... According to the JDBC Spec, jdbc-3_0-fr-spec.pdf, the recommended way to set an array is by using the ps.setObject() method. Is this easy to implement? If someone can point me at some code, I can try implementing it and sending in a patch. I haven't played with the driver code in about 2 years. Unfortunately, I'm away on holidays for about a week tomorrow, but if you have any ideas regarding implementation, I'll have a go when I come back. Should be possible to make it support multiple dimension arrays too I guess. I haven't actually looked at the driver code yet. Oh I haven't gotten around to testing ResultSet.getArray() yet, but I think I remember reading somewhere that it was implemented. Tom. PS. I looked at trying to use PreparedStatement.setArray() but it takes an java.sql.Array, which is just an Interface. I guess I could try creating a class that implements Array and try passing that to setArray() but I'm not even sure if that would work yet either. The setObject() way suggested by the spec is definitely simpler.
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