Unable to insert dates and blobs with java.sql.PreparedStatement

Question

I got a problem when i try to insert into a table using Prepared
statement.
The table definition is
TABLE USER_ACCOUNTS
USER_ACCOUNT NUMBER(12),
START_DATE DATE,
END_DATE DATE,
NB_UNSUCC_LOG_AT NUMBER(2),
USER_ID VARCHAR2(30),
CREATION_DATE DATE;
In my java classes if i do the following code everithing's fine:
connection = pool.getConnection();
connection.executeUpdate("
INSERT INTO USER_ACCOUNTS(
USER_ACCOUNT,
START_DATE,
END_DATE,
NB_UNSUCC_LOG_AT,
USER_ID,
CREATION_DATE)
VALUES(
123,
TO_DATE('2001-11-20','YYYY-MM-DD'),
NULL,
0,
'TOTO',
TO_DATE('2001-11-20','YYYY-MM-DD')
but when i do the following, it gives me errors and no rows are
created! what am i doing wrong?
connection = pool.getConnection();
pstmt = connection.prepareStatement(
"INSERT INTO USER_ACCOUNTS(
USER_ACCOUNT,
START_DATE,
END_DATE,
NB_UNSUCC_LOG_AT,
USER_ID,
CREATION_DATE)
VALUES(?,?,?,?,?,?)");
int userAccount = 123;
java.sql.Date creationDate = new Date(123445566);
java.sql.Date startDate = new Date(123445566);
java.sql.Date endDate = null;
int nbUnsuccessfullLogonAttempt = 0;
String userid ="TOTO";
pstmt.setInt(1, userAccount);
pstmt.setDate(2, startDate);
pstmt.setDate(3, endDate);
pstmt.setInt(4, nbUnsuccessfullLogonAttempt);
pstmt.setString(5, userid);
pstmt.setDate(6, startDate);
pstmt.executeUpdate();
____________ at this point i receive an SQL Exception that said
invalid delimiter in string
i also tried with VALUES
(?,TO_DATE('?', 'YYYY-MM-DD'),?,?,?,TO_DATE('?', 'YYYY-MM-DD'))
and the result was invalid month in date
Thanks for your help!
Julien De Santis

Answer 1

> org.hibernate.PropertyValueException: not-null property references a null or transient value: BookOpr.Author.BkBk is null while it should not be, according to the mapping:
<class name="BookOpr.Author" table="author">
    <many-to-one name="Bk" column="bid" class="BookOpr.Book" not-null="true"/>There are 2 solutions:
1) Don't null the BookOpr.Author.Bk.
2) Remove not-null="true" or set it to "false".