Error when accessing BLOB with Firebird based datasource
Hi,
I have problem with my small application based on Firebird SQL datasource.
The same code works fine with MySQL.
Entity Bean (blob fields):
private byte[] photo;
private String comment;
@Lob(type=LobType.BLOB, fetch=FetchType.EAGER)
public byte[] getPhoto()
{
return photo;
}
public void setPhoto(byte[] photo)
{
this.photo = photo;
}
@Lob(type=LobType.CLOB, fetch=FetchType.EAGER)
public String getComment()
{
return comment;
}
public void setComment(String value)
{
this.comment = value;
}
Insert of data (persist) works but when I run some query then I get error.
In server.log is:
DEBUG [org.hibernate.util.JDBCExceptionReporter] could not execute query [select ... klient0_.photo as photo0_, klient0_.comment as comment0_ from klienti klient0_ where klient0_.lastname like ? order by klient0_.lastname] org.firebirdsql.jdbc.FBSQLException: I/O Exception. invalid BLOB type for operation at org.firebirdsql.jdbc.FBBlob.getBytes(FBBlob.java:305) at org.hibernate.type.ByteArrayBlobType.get(ByteArrayBlobType.java:87) at org.hibernate.type.AbstractLobType.nullSafeGet(AbstractLobType.java:43) at org.hibernate.type.AbstractType.hydrate(AbstractType.java:81) at org.hibernate.persister.entity.AbstractEntityPersister.hydrate(AbstractEntityPersister.java:1898) at org.hibernate.loader.Loader.loadFromResultSet(Loader.java:1372) ... at java.io.IOException: invalid BLOB type for operation at org.firebirdsql.jdbc.FBBlob$FBBlobInputStream.seek(FBBlob.java:570) at org.firebirdsql.jdbc.FBBlob$FBBlobInputStream.seek(FBBlob.java:557) at org.firebirdsql.jdbc.FBBlob.getBytes(FBBlob.java:296) at org.hibernate.type.ByteArrayBlobType.get(ByteArrayBlobType.java:87) at org.hibernate.type.AbstractLobType.nullSafeGet(AbstractLobType.java:43) WARN [org.hibernate.util.JDBCExceptionReporter] SQL Error: 0, SQLState: HY000 ERROR [org.hibernate.util.JDBCExceptionReporter] I/O Exception. invalid BLOB type for operation
Database schema (automatically generated, blob columns ) is:
PHOTO BLOB segment 80, subtype UNKNOWN CHARACTER SET NONE Nullable COMMENT BLOB segment 80, subtype TEXT Nullable
My environment:
JBOSS AS 4.0.3RC2, EJB3 RC3, FirebirdSQL 1.5 Database server, JayBird driver 1.5.6.
It looks as Hibernate dialect (FirebirdDialect) problem.
Leonell
