About empty

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JPA Doc
4

javax.persistence.criteria.Root

this type. Returns empty set if no fetch joins have been made from this type. Modifications to the set ... . Returns empty set if no joins have been made from this bound type. Modifications to the set do not affect
JPA Doc
4

javax.persistence.criteria.SetJoin

that have been made from this type. Return the fetch joins that have been made from this type. Returns empty set ... . Return the joins that have been made from this bound type. Returns empty set if no joins
Forum
3

Replication error on slave restart

objects. The master directory contains an empty database file (sm.odb) with no classes and no objects. Could you please explain what happened to the master database and when and how it became empty? Because in this situation, when the master database is empty, obviously replication cannot succeed
JDO Doc
3

addSubquery(sub, variableDeclaration, candidateCollectionExpression, parameters)

expression is the empty String for either the parameter or the value of the String[], or for any map key
JDO Doc
3

Constants.ANONYMOUS_PERSISTENCE_MANAGER_FACTORY_NAME

Static Field javax.jdo.Constants String ANONYMOUS_PERSISTENCE_MANAGER_FACTORY_NAME The name of the anonymous PersistenceManagerFactory, which is the empty string. Since: JDO 2.1
JDO Doc
3

DatastoreIdentity.customStrategy

Annotation Element javax.jdo.annotations.DatastoreIdentity String customStrategy Custom strategy to use to generate the value for the identity. If customStrategy is non-empty, then strategy must be UNSPECIFIED. Returns: the custom strategy Default value: "" Since: JDO 2.1
JDO Doc
3

Discriminator.customStrategy

Annotation Element javax.jdo.annotations.Discriminator String customStrategy Custom strategy to use for the discriminator. If customStrategy is non-empty, then strategy must be UNSPECIFIED. Returns: the custom strategy Default value: "" Since: JDO 2.1
JPA Doc
3

getCorrelatedJoins()

Method javax.persistence.criteria.Subquery Set> getCorrelatedJoins() Return the correlated joins of the subquery. Returns empty set if the subquery has no correlated joins. Modifications to the set do not affect the query. Returns: the correlated joins of the subquery Since: JPA 2.0
JPA Doc
3

getDeclaredAttributes()

Method javax.persistence.metamodel.ManagedType Set> getDeclaredAttributes() Return the attributes declared by the managed type. Returns empty set if the managed type has no declared attributes. Returns: declared attributes of the managed type Since: JPA 2.0
JPA Doc
3

getDeclaredPluralAttributes()

Method javax.persistence.metamodel.ManagedType Set> getDeclaredPluralAttributes() Return all multi-valued attributes (Collection-, Set-, List-, and Map-valued attributes) declared by the managed type. Returns empty set if the managed type has no declared multi-valued