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boolean isOptional () Can the attribute be null . Return: boolean indicating whether the attribute can be null Since: JPA 2.0 boolean isVersion () Is the attribute a version attribute. Return: boolean

String name default null (Required) The name used to refer to the query with the EntityManager methods that create query objects. Since: JPA 1.0 String query default null (Required) The query string in the Java Persistence query language. Since: JPA 1.0

. Since: JPA 1.0 Public Annotation Attributes String name default null The name of the property Since: JPA 1.0 String value default null The value of the property Since: JPA 1.0

.) Since: JPA 1.0 String name default null The name used to refer to the query with the EntityManager methods that create query objects. Since: JPA 1.0 String query default null The SQL query string. Since: JPA

instance or null if the entity does not exist Throws: IllegalArgumentException - if the first argument does not denote an entity type or the second argument is is not a valid type for that entity's primary key or is null Since: JPA 1.0

JPA Method in javax.persistence.criteria.CriteriaBuilder Predicate isNull (    Expression  x ) Create a predicate to test whether the expression is null . Parameters: x - expression Return: is- null predicate Since: JPA 2.0

JPA Method in javax.persistence.criteria.CriteriaBuilder Predicate isNotNull (    Expression  x ) Create a predicate to test whether the expression is not null . Parameters: x - expression Return: is-not- null predicate Since: JPA 2.0

a provider are ignored. Since: JPA 1.0 Public Annotation Attributes String name default null Name of the hint. Since: JPA 1.0 String value default null Value of the hint. Since: JPA 1.0

how to use Parameter . Public Methods String getName () Return the parameter name, or null ... , or null if the parameter is not a positional parameter. Return: position of parameter Since: JPA 2.0

AssociationOverride Since: JPA 1.0 Public Annotation Attributes Column column default null (Required ... is defined in the embeddable class or mapped superclass. Since: JPA 1.0 String name default null (Required

JPA Method in javax.persistence.criteria.Expression Predicate isNull () Create a predicate to test whether the expression is null . Return: predicate testing whether the expression is null Since: JPA 2.0

JPA Method in javax.persistence.criteria.Expression Predicate isNotNull () Create a predicate to test whether the expression is not null . Return: predicate testing whether the expression is not null Since: JPA 2.0

Attributes String column default null Name of the column in the SELECT clause - i.e., column aliases, if applicable. Since: JPA 1.0 String name default null Name of the persistent field or property of the class. Since: JPA 1.0

mode Return: the found entity instance or null if the entity does not exist Throws ... a valid type for that entity's primary key or is null TransactionRequiredException

: the found entity instance or null if the entity does not exist Throws: IllegalArgumentException - if the first argument does not denote an entity type or the second argument is is not a valid type for that entity's primary key or is null Since: JPA 2.0

) } ) } ) See Also: SqlResultSetMapping ColumnResult Since: JPA 2.1 Public Annotation Attributes ColumnResult [] columns default null ... order. Since: JPA 2.1 Class targetClass default null (Required) The class whose constructor is to be invoked. Since: JPA 2.1

properties and hints Return: the found entity instance or null if the entity does not exist Throws ... is not a valid type for that entity's primary key or is null TransactionRequiredException

Annotation Attributes NamedAttributeNode [] attributeNodes default null (Required) The list ... . Since: JPA 2.1 String name default null (Required) The name of the subgraph as referenced from

.Project [ null ]([project]) Info: ExtRequestBean []: Persisted: com.greensoft.objectdb.test.mini.entity ... lazy builder method triggers. */ private void reset() { project = null ; } public Project buildProject(String projectName) { String $i = "buildProject"; if (em == null ) { log_warn($i, "BEFORE: Extended

/new com.objectdb.o.InternalException: null com.objectdb.o.InternalException at com.objectdb.o.VUT.k ... #96658 unexpected exception: null [2] Page #96658 last key is null , parent page #144908 next key is 'Elementarprodukt:400000100465140:7:1:' [3] Page #119529 unexpected exception: null [4] Page #119529

has no constant with the specified name NullPointerException - if the argument is null Method inherited

JPA Constructor in javax.persistence.LockTimeoutException LockTimeoutException () Constructs a new LockTimeoutException exception with null as its detail message. Since: JPA 2.0

- if the argument is null Method inherited from class java.lang.Enum compareTo , compareTo

JPA Annotation Attribute in javax.persistence.DiscriminatorValue String value default null (Optional) The value that indicates that the row is an entity of the annotated entity type. If the DiscriminatorValue annotation is not specified and a discriminator column is used, a provider-specific

JPA Annotation Attribute in javax.persistence.NamedStoredProcedureQueries NamedStoredProcedureQuery [] value default null (Required) Array of NamedStoredProcedureQuery annotations. Since: JPA 2.1

that corresponds to the where clause restriction(s), or null if no restrictions have been specified

JPA Annotation Attribute in javax.persistence.EntityResult Class entityClass default null The class of the result. Since: JPA 1.0

default null (Required) Array of NamedStoredProcedureQuery annotations. Since: JPA 2.1

AssociationOverride [] value default null (Required) The association override mappings that are to be applied to the relationship field or property . Since: JPA 1.0

with the specified name and actions. The actions should be null ; they are ignored. This constructor exists ... of the JDOPermission actions - should be null . Since: JDO 1.0 Public Static Fields CLOSE_PERSISTENCE

class for the object id class, null is returned. For classes that use single field identity ... of the object id pcClass - the PersistenceCapable class. Return: the new ObjectId instance, or null if the class is not registered. Since: JDO 2.0

parameter is null , no key values are copied. The new instance has its jdoFlags set to LOAD_REQUIRED ... , or null if the class is not registered. See Also: PersistenceCapable(StateManager sm,Object oid) Since: JDO 1.0

for datastore identity, or if the class is abstract, null is returned. Parameters: pcClass - the PersistenceCapable class. Return: the new ObjectId instance, or null if the class is not registered. Since: JDO 1.0

JDO Annotation Attribute in javax.jdo.annotations.Persistent String nullIndicatorColumn default "" Null indicator column for this member. Used for nested embedded fields or properties to indicate whether the embedded instance should have a null value. Since: JDO 2.1

, the specified class object must not be null . Parameters: cls - the class object from which to load ... the bundle. Note, the specified class loader must not be null . Parameters: bundleName - the name

constructor parameter is null . This might occur when creating an object id instance from a transient instance where an identity field is null . Since: JDO 2.0 Public Constructors JDONullIdentityException

Constants CASCADE Since: JDO 2.1 DEFAULT Since: JDO 2.1 NONE Since: JDO 2.1 NULL Since: JDO 2.1 RESTRICT ... NullPointerException - if the argument is null Method inherited from class java.lang.Enum compareTo , compareTo

the event, or null if there was none. See Also: "Section 12.15, Java Data Objects 2.0 Specification ... the event. Return: The persistent instance involved in the event, or null

return null . Instances unknown by the implementation return null . Parameters: pc - the instance

JDO Annotation Attribute in javax.jdo.annotations.Embedded String nullIndicatorValue default "" The value in the null column to interpret the object as being null . Since: JDO 2.1

for datastore identity, or if the class is abstract, null is returned. For classes using single field identity ... initialized (not null ), or a JDONullIdentityException is thrown. The instance returned

until one of them handles the call (returns a non- null Boolean with the answer). The caller provides ... if the instance does not satisfy the interrogation; or null if the implementation does not manage the class of the instance Since: JDO 1.0

String name default null The symbolic name of the datastore sequence. Since: JDO 2.1 SequenceStrategy strategy default null Strategy for the sequence. Since: JDO 2.1

instances until one of them handles the call (returns a non- null answer). The caller provides the stateless ... -compatible implementation Return: the associated object or null if the implementation does not manage the class of the instance Since: JDO 1.0

language Since: JDO 2.1 String name default null Name of the query (mandatory) Since: JDO 2.1 Class ... default "" Whether the query is unmodifiable. Since: JDO 2.1 String value default null The query string (mandatory) Since: JDO 2.1

JDO Annotation Attribute in javax.jdo.annotations.Query String name default null Name of the query (mandatory) Since: JDO 2.1

JDO Annotation Attribute in javax.jdo.annotations.Uniques Unique [] value default null The unique constraints. Since: JDO 2.1

JDO Annotation Uniques Target: ElementType.TYPE Implemented Interfaces: Annotation Annotation for a group of unique constraints. Since: JDO 2.1 Public Annotation Attributes Unique [] value default null The unique constraints. Since: JDO 2.1

with the specified name NullPointerException - if the argument is null Method inherited from class java

parameter is specified as null , events for all persistent classes and interfaces will be sent