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21

Threading Problem (maybe with Criteria)

would a ConcurrentLinkedHashMap). FETCH thread nr (36) count: 982 UIDs in 26 msek FETCH thread nr (41) count: 982 UIDs in 29 msek FETCH thread nr (44) count: 982 UIDs in 14 msek FETCH thread nr (39) count: 982 UIDs in 25 msek FETCH thread nr (42) count: 982 UIDs in 31 msek FETCH thread nr (40) count
18

Performance issues on aggregate query

usedSolutionObjectTypeVersion; @OneToMany(fetch=FetchType.LAZY) @Index public List<Action> actions = new ArrayList<Action>(); @OneToMany(fetch=FetchType.LAZY) @Index public List<ObjectNode> childNodes = new ArrayList<ObjectNode>(); @OneToMany(fetch=FetchType.LAZY) public List<ObjectNode> container = new
3

javax.persistence.EntityManager

may be lazily fetched. Get an instance, whose state may be lazily fetched. If the requested instance does
0

detachCopyAll(pcs)

) and the active fetch groups determine the scope of fetching for the graph of instances reachable from ... instances must either be in the default-fetch-group, or in the current custom FetchPlan. Parameters: pcs
0

getMaxFetchDepth()

Method javax.jdo.FetchPlan int getMaxFetchDepth() Return the maximum fetch depth used when fetching instances. Returns: the maximum fetch depth Since: JDO 2.0
0

javax.jdo.annotations.Query

of the fetch plan used by this query The name of the fetch plan used by this query Returns: the fetch plan
0

javax.jdo.Extent

() Get the fetch plan associated with this Extent. Get the fetch plan associated with this Extent. Returns: the fetch plan Since: JDO 2.0 PersistenceManager getPersistenceManager() An Extent is managed by
0

FetchPlan.name

Annotation Element javax.jdo.annotations.FetchPlan String name Name of the fetch plan. Returns: the name of the fetch plan Default value: "" Since: JDO 2.1
0

FetchGroup.ALL

Static Field javax.jdo.FetchGroup String ALL For use with addCategory and removeCategory calls. This category includes all members in the persistent type. Using this category also sets the fetch-depth for the members in the default fetch group. Since: JDO 2.2
0

javax.jdo.Query

of the returned fetch plan will not cause this query's owning PersistenceManager's FetchPlan to be modified. Returns: the fetch plan used by this query Since: JDO 2.0 boolean getIgnoreCache

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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