JPA + Hibernate - lazy loading

[garcia-jj]

Fábio, isso mesmo. Apenas para encurtar, aqui a citação:

Typically the entire LOB will be read and written for the attribute. For very large LOBs reading the value always, or reading the entire value may not be desired. The fetch type of the Basic could be set to LAZY to avoid reading a LOB unless accessed. Support for LAZY fetching on Basic is optional in JPA, so some JPA providers may not support it. A workaround, which is often a good idea in general given the large performance cost of LOBs, is to store the LOB in a separate table and class and define a OneToOne to the LOB object instead of a Basic. If the entire LOB is never desired to be read, then it should not be mapped. It is best to use direct JDBC to access and stream the LOB in this case. In may be possible to map the LOB to a java.sql.Blob/java.sql.Clob in your object to avoid reading the entire LOB, but these require a live connection, so may have issues with detached objects.

Lembre-se de colocar o hibernate para usar streams para ler os lobs.

Abraços