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From "Juergen Kissner (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-5788) BIT support regression and confusing message in org.apache.derby.client.am.SqlException: Invalid character string format for type BOOLEAN
Date Tue, 19 Jun 2012 07:18:43 GMT

    [ https://issues.apache.org/jira/browse/DERBY-5788?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13396575#comment-13396575

Juergen Kissner commented on DERBY-5788:


Looking at the Java documentation (http://docs.oracle.com/javase/1.4.2/docs/guide/jdbc/getstart/mapping.html#999493):

The JDBC type BOOLEAN, which is new in the JDBC 3.0 API, maps to a boolean in the Java programming
language. It provides a representation of true and false, and therefore is a better match
than the JDBC type BIT, which is either 1 or 0.

This part of the description refers to BOOLEAN; however, the last part of the sentence explicitly
mentions the values 0 and 1.

Going back to the original meaning of "bit" (binary digit), "bit" is a digit. So it is at
least unexpected if you cannot use the digits 0 and 1 (or string representations of them)
prepstmt.setObject(pos, val, java.sql.Types.BIT).

- Juergen

> BIT support regression and confusing message in org.apache.derby.client.am.SqlException:
Invalid character string format for type BOOLEAN
> ---------------------------------------------------------------------------------------------------------------------------------------------------
>                 Key: DERBY-5788
>                 URL: https://issues.apache.org/jira/browse/DERBY-5788
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>    Affects Versions:
>         Environment: Windows 7 (All)
>            Reporter: Radoslav Ivanov
> Scenario (on; with  the problem does not appear): when setting BIT
from this example :
> rsSch.createTab("Bit_Tab",sqlp,conn);
> String sMaxBooleanVal = rsSch.extractVal("Bit_Tab",1,sqlp,conn); //value is “1“
> cstmt = conn.prepareCall("{call Bit_In_Min(?)}");
> cstmt.setObject(1,sMaxBooleanVal,java.sql.Types.BIT); //-> throws the exception below
> Exception (Problem with not supporting “0” and “1” for the type BIT; moreover,
confusing message):
> java.sql.SQLDataException: Invalid character string format for type BOOLEAN.
>          at org.apache.derby.client.am.SQLExceptionFactory40.getSQLException(Unknown
>          at org.apache.derby.client.am.SqlException.getSQLException(Unknown Source)
>          at org.apache.derby.client.am.PreparedStatement.setObject(Unknown Source)
>          at org.apache.commons.dbcp.DelegatingPreparedStatement.setObject(DelegatingPreparedStatement.java:166)
>          at org.apache.commons.dbcp.DelegatingPreparedStatement.setObject(DelegatingPreparedStatement.java:166)
>          at com.sun.ts.tests.jdbc.ee.callStmt.callStmt10.callStmtClient10.testSetObject48(callStmtClient10.java:812)
>          at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>          at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>          at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

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