On Wed, 7 Oct 2009, konishi wrote:
Bug reference: 5099
PostgreSQL version: 8.4.1
Description: When MetaData is acquired, it becomes an SQL error.
Details:
In sample source and sample db
when used postgresql-8.4-701.jdbc3.jar is error
when used postgresql-8.3-603.jdbc3.jar is no error
The error disappears when "prepared.getParameterMetaData()" row delete.
String url = "jdbc:postgresql://XXX.XXX.XXX.XXX:5432/test";
Connection con = DriverManager.getConnection(url, "postgres", "test");
try{
String sql = "insert into test(filename,upddate) values(?,?)";
PreparedStatement prepared = con.prepareStatement(sql);
System.out.println("ParameterMetaData[" +
prepared.getParameterMetaData() + "]");
prepared.setString(1, "0");
prepared.setTimestamp(2, new
Timestamp(Calendar.getInstance().getTimeInMillis()));
prepared.executeUpdate();
}catch(Exception e){
System.out.println(e.getMessage());
}
error message:
java.lang.IllegalArgumentException: Can't change resolved type for param: 1
from 1043 to 25
at
org.postgresql.core.v3.SimpleParameterList.setResolvedType(SimpleParameterLi
st.java:230)
at
I have applied a fix to CVS for this problem and it will be included in
the next release.
For the 8.4 release an optimization was added to avoid re-describing a
statement if we already had the type information available by copying the
resolved type information from the query to the provided parameters. Its
goal was just to overwrite parameters without a type (unknown), but it was
actually overwriting all types which could change the query's desired
behavior. In this case a safeguard to prevent that change was throwing
the exception noted.
Kris Jurka
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