About Group Id

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JDO Doc
12

javax.jdo.PersistenceManager

for detachment (DETACH_LOAD_FIELDS and DETACH_UNLOAD_FIELDS) and the active fetch groups determine the scope ... ) and the active fetch groups determine the scope of fetching for the graph of instances reachable from the pcs ... must either be in the default-fetch-group, or in the current custom FetchPlan. Parameters: pcs
JDO Doc
11

javax.jdo.spi.PersistenceCapable

to LOAD_REQUIRED, then the fields in the default fetch group cannot be accessed for read or write ... fetch group cannot be accessed for read or write without notifying the StateManager. Since: JDO 1.0 ... . Since: JDO 1.0 byte READ_OK If jdoFlags is set to READ_OK, then the fields in the default fetch group
Manual
11

JPA Primary Key

an object database, ObjectDB supports implicit object IDs, so an explicitly defined primary key is not ... key field: @Entity public class Project { @Id @GeneratedValue long id; // still set automatically : } The @Id annotation marks a field as a primary key field. When a primary key field
Manual
10

ORDER BY clause (JPQL / Criteria API)

expression: SELECT c.name FROM Country c ORDER BY c.name DESC Grouping (GROUP BY) Order The ORDER BY ... and a GROUP BY clause the SELECT clause receives groups rather than individual objects and ORDER BY can order these groups. For example: SELECT c.currency, SUM(c.population) FROM Country c
JPA Doc
8

javax.persistence.criteria.Subquery

< Expression> getGroupList() Return a list of the grouping expressions. Return a list of the grouping expressions. Returns empty list if no grouping expressions have been specified. Modifications to the list do not affect the query. Returns: the list of grouping expressions Since: JPA 2.0 Predicate
JPA Doc
8

javax.persistence.criteria.CriteriaQuery

to the given entity Since: JPA 2.0 List> getGroupList() Return a list of the grouping expressions. Return a list of the grouping expressions. Returns empty list if no grouping expressions have been specified. Modifications to the list do not affect the query. Returns: the list of grouping
Forum
7

Grouping by date()

have to group by date(). For few queries I was concatenating 'date' from year()-month()-day() calls ... implementation. There is only one small problem with new version. When you group by date() there are two days per day. I mean group by divides each day for two parts. You can see an example in attached
Forum
7

Help with JPA2 Criteria and conditional operator grouping

)              )));   System.out.println("Query: " + c); But I can can never get the grouping to occur ... persistence.xml shows the grouping happening. I've had to dumb down the domain model ... and for the test case. Please try build 2.2.8_04 that should fix the bug. That fixed the conditional grouping
Issue
7

Support for roles/groups in ObjectDB

ObjectDB should incorporate roles/group in ObjectDB config file? I see no support for this. I would like to place several users under a given group or role, but I see no way of doing this as ... , there could be a role/group element which would categorise the user further. This would help in authentication.   Thanks st.clair.clarke
Manual
7

Paths and Types in JPQL and Criteria API

counts all these objects (this is an aggregate query with no GROUP BY - all the objects are considered as one group, and COUNT calculates its size). Criteria Query Paths and Types Paths and navigations ... expressions in the above code can be divided into two main groups: FROM variable expressions, represented