[CAUSEWAY-698] Allow JDOQL to be able to select scalars (eg project individual field(s)) rather than entire entities.

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: objectstore-jdo-1.3.0
• Fix Version/s: objectstore-jdo-1.4.0
• Component/s: Persistence JDO
• Assignee: Daniel Keir Haywood
• Reporter: Daniel Keir Haywood
• Created: 15/Feb/14 14:54
• Updated: 11/Mar/14 07:41
• Resolved: 15/Feb/14 15:23

Description

a typical (currently supported) query is:

@javax.jdo.annotations.Query(
name = "findByPropertyAndType", language = "JDOQL",
value = "SELECT "
+ "FROM org.estatio.dom.lease.LeaseTerm "
+ "WHERE leaseItem.type == :leaseItemType "
+ " && leaseItem.lease.occupancies.contains(lu) "
+ " && (lu.unit.property == :property) "
+ "VARIABLES org.estatio.dom.lease.Occupancy lu"),

this ticket is to support queries of the form (note the "SELECT startDate"):

@javax.jdo.annotations.Query(
name = "findStartDatesByPropertyAndType", language = "JDOQL",
value = "SELECT startDate "
+ "FROM org.estatio.dom.lease.LeaseTerm "
+ "WHERE leaseItem.type == :leaseItemType "
+ " && leaseItem.lease.occupancies.contains(lu) "
+ " && (lu.unit.property == :property) "
+ "VARIABLES org.estatio.dom.lease.Occupancy lu")