Bugs item #791501, was opened at 2003-08-19 23:42
Message generated for change (Settings changed) made by loubyansky
You can respond by visiting:
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>Category: JBossCMP
Group: v3.2
Status: Open
>Resolution: Accepted
Priority: 5
Submitted By: Jerrold E Eads (jeeads)
>Assigned to: Alexey Loubyansky (loubyansky)
Summary: Optimistic locking problem with SQL Server 2000
Initial Comment:
Optimistic Locking problem when using SQL Server 2000
and JBoss 3.2.1
When using SQL Server with JBoss 3.2.1 the following
problem occurs.
When updating an optimistically locked field that has an
initial value of null the update fails.
Code related:
JDBCStoreCommand.java line 00108
sql.append(" WHERE").append(SQLUtil.getWhereClause
(whereFields));
The where fields are the primary key field and the
optimistically locked fields.
String jdbc::SQLUtil::getWhereClause(List fields) [inline
static]
Returns columnName0=? [AND columnName1=? [AND
columnName2=? [....]]]
In SQL Server 2000 if a field is null the syntax has to be
columnName0 is ? where ? is null
The columnName=? syntax fails the update.
The call on line 00108 should not be completed until the
values for the lockedFields are
known. This could be done in the for loop between lines
00142 and 00147. After getting
the values a call to SQLUtil.getWhereClause
(JDBCFieldBridge field) or
SQLUtil.getIsNullClause(boolean not, JDBCFieldBridge
field, String identifier) could be
appended to make the SQL statement correct.
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