Hi,
Does anyone know if OpenJPA supports queries on element collections?
Given:
@Entity
@Table(name="items")
public class Item implements Serializable {
@Id
@Column(name="seq_no")
private long m_seqNo;
@ElementCollection(fetch=FetchType.LAZY)
@CollectionTable(name="properties",
joinColumns={ @JoinColumn(name="seq_no") })
@MapKeyColumn(name = "prop_name")
@Column(name="prop_val")
private Map<String, String> m_properties;
}
... basically, 1-to-many from "items" to "properties" with schema
Table: items
Column: seq_no // primary key
Table: properties
Column: seq_no // foreign key to "items"
Column: prop_name // m_properties keys
Column: prop_val // m_properties values
Then: running JPA query
SELECT x FROM Item x WHERE x.m_properties.get('x') < 'h'
results in a parse exception for me on OpenJPA v2.0.0.
Thanks.
- Howard
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