[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2304) Wrong type detection for sql type char(x) columns

[Bart Vanhaute (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2304?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=32635#action_32635 ] 

Bart Vanhaute commented on HHH-2304:
------------------------------------

(Using mysql 5.0) when the data in the column is the empty string, I get:

java.lang.StringIndexOutOfBoundsException: String index out of range: 0
	at java.lang.String.charAt(String.java:558)
	at org.hibernate.type.CharacterType.get(CharacterType.java:29)
	at org.hibernate.type.NullableType.nullSafeGet(NullableType.java:163)
	at org.hibernate.type.NullableType.nullSafeGet(NullableType.java:189)
	at org.hibernate.loader.custom.CustomLoader$ScalarResultColumnProcessor.extract(CustomLoader.java:474)
	at org.hibernate.loader.custom.CustomLoader$ResultRowProcessor.buildResultRow(CustomLoader.java:420)
	at org.hibernate.loader.custom.CustomLoader.getResultColumnOrRow(CustomLoader.java:317)
	at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:614)
	at org.hibernate.loader.Loader.doQuery(Loader.java:709)
	at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:244)
	at org.hibernate.loader.Loader.doList(Loader.java:2228)
	at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2112)
	at org.hibernate.loader.Loader.list(Loader.java:2107)
	at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:289)
	at org.hibernate.impl.SessionImpl.listCustomQuery(SessionImpl.java:1695)
	at org.hibernate.impl.AbstractSessionImpl.list(AbstractSessionImpl.java:142)
	at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:152)
	at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:66)


I have found the following workaround for native queries: 
instead of 
  select val from table
do
  select cast(val as char) from table


> Wrong type detection for sql type char(x) columns
> -------------------------------------------------
>
>                 Key: HHH-2304
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2304
>             Project: Hibernate Core
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 3.2.0.ga
>         Environment: Hibernate 3.2.0, Oracle 9.2, Oracle JDBC driver 10.2
>            Reporter: Markus Heiden
>         Attachments: hibernate.zip
>
>
> When executing a sql query which returns columns of sql type char(x), a java.lang.Character is returned. This leads to returning just the first character of the value. In my eyes a String should be returned when the char(x) type has a width > 1. I wasn't able to determine whether this is a jdbc driver issue or a hibernate issue. When using sql type char(x) for columns of entities no such problems occur.
> Test case is attached.

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