Hi,

The problem is that 'like' queries throw DataTruncation exceptions or
produce empty results when the search text reachs the column length or
the column length -1.

I'm using Firebird 1.5.3 together with JayBird 2.0.1/2.1.0 (embedded)
and Hibernate 3.1.3, but I'm posting here because it seems to me that
this is more related to Firebird.

I have a sentence of the form:

... where fieldName like ?

Over a VARCHAR field. When I enter %value% as the parameter and value
has the column length or the column length -1 it breaks.

With JayBird 2.1.0 it produces an empty result when there
should be matches, and with JayBird 2.0.1 just throws a DataTruncation
exception:

Caused by: org.hibernate.exception.GenericJDBCException: could not
execute query
at
org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:103)
at
org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:91)
at
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
at org.hibernate.loader.Loader.doList(Loader.java:2148)
at
org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2029)
at org.hibernate.loader.Loader.list(Loader.java:2024)
at
org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:94)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1533)
at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:283)
...
Caused by: java.sql.DataTruncation: Data truncation
at
org.firebirdsql.jdbc.field.FBWorkaroundStringField.setString(FBWorkaroundStringField.java:95)
at
org.firebirdsql.jdbc.AbstractPreparedStatement.setString(AbstractPreparedStatement.java:383)
at org.hibernate.type.StringType.set(StringType.java:26)
at
org.hibernate.type.NullableType.nullSafeSet(NullableType.java:83)
at
org.hibernate.type.NullableType.nullSafeSet(NullableType.java:65)
at
org.hibernate.loader.Loader.bindPositionalParameters(Loader.java:1514)
at
org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1576)
at org.hibernate.loader.Loader.doQuery(Loader.java:661)
at
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
at org.hibernate.loader.Loader.doList(Loader.java:2145)
... 16 more

Souldn't I be able to query for %value% with value entries as long as
the column length?

For the record, I built the query with Hibernate as:
Restrictions.like("fieldName", "%" + filter + "%")
or
Restrictions.like("fieldName", filter, MatchMode.ANYWHERE)

And the result is the same.

Regards.