Hi all, here is what I am running into when using useGeneratedKeys in an
insert statement:
org.apache.ibatis.exceptions.IbatisException:
### Error updating database. Cause:
org.apache.ibatis.executor.ExecutorException: Error getting generated key or
setting result to parameter object. Cause: org.postgresql.util.PSQLException:
Bad value for type int : 2009-10-15 00:08:00.195026
Caused by: org.postgresql.util.PSQLException: Bad value for type int :
2009-10-15 00:08:00.195026
at
org.postgresql.jdbc2.AbstractJdbc2ResultSet.toInt(AbstractJdbc2ResultSet.java:2759)
at
org.postgresql.jdbc2.AbstractJdbc2ResultSet.getInt(AbstractJdbc2ResultSet.java:2003)
at
org.postgresql.jdbc2.AbstractJdbc2ResultSet.getInt(AbstractJdbc2ResultSet.java:2426)
at
com.mchange.v2.c3p0.impl.NewProxyResultSet.getInt(NewProxyResultSet.java:2573)
at
org.apache.ibatis.type.IntegerTypeHandler.getNullableResult(IntegerTypeHandler.java:14)
at
org.apache.ibatis.type.BaseTypeHandler.getResult(BaseTypeHandler.java:21)
at
org.apache.ibatis.executor.keygen.Jdbc3KeyGenerator.processAfter(Jdbc3KeyGenerator.java:33)
I am currently using iBatis 3.0-beta3.
<insert id="add" parameterType="foo.bar.License" keyProperty="id"
useGeneratedKeys="true">
INSERT INTO license (name) VALUES (#{name})
</insert>
I use Postgresql 8.4 and the Insert statement returns the following when it is
executed by iBatis:
created | updated | version | name | id
"2009-10-15 00:08:00.195026" | "2009-10-15 00:08:00.195026" | 0 | "asdf" | 27
As you can see, my ID column is at the end which is causing the problem ->
iBatis is trying to convert the timestamp to an int since it is in the first
column and thinks that this is the key it is supposed to get.
I propose the following patch which solves this issue. I have tested it by
running my own test and all the tests in latest trunk (they all passed).
Index: ibatis-3-
core/src/main/java/org/apache/ibatis/executor/keygen/Jdbc3KeyGenerator.java
===================================================================
--- ibatis-3-
core/src/main/java/org/apache/ibatis/executor/keygen/Jdbc3KeyGenerator.java
(revision 825397)
+++ ibatis-3-
core/src/main/java/org/apache/ibatis/executor/keygen/Jdbc3KeyGenerator.java
(working copy)
@@ -33,7 +33,14 @@
ResultSetMetaData rsmd = rs.getMetaData();
int colCount = rsmd.getColumnCount();
if (colCount > 0) {
- String colName = rsmd.getColumnName(1);
+ int colIndex = 1;
+ for (int k=1; k<=colCount; k++) {
+ if (rsmd.getColumnName(k).equals(keyProperty)) {
+ colIndex = k;
+ break;
+ }
+ }
+ String colName = rsmd.getColumnName(colIndex);
while (rs.next()) {
Object value = th.getResult(rs, colName);
metaParam.setValue(keyProperty, value);
With the patch it compares the column name to the one set by keyProperty and
if they match it will use the index of the matching column, otherwise it will
try to extract the value out of the first column.
I hope this proves useful to someone else as well. Do let me know if there are
any concerns regarding the patch. Hopefully it gets accepted =]
Thanks,
Jonathan Curran
P.S. I noticed that in trunk when executing a select I have to specify column
names otherwise it throws errors (e.g. when doing select *). Just wondering
what the deal is with that (hopefully just a side effect that will get fixed
soon)?
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