javax.persistence
Enum FlushModeType

java.lang.Object
  extended by java.lang.Enum<FlushModeType>
      extended by javax.persistence.FlushModeType
All Implemented Interfaces:
java.io.Serializable, java.lang.Comparable<FlushModeType>

public enum FlushModeType
extends java.lang.Enum<FlushModeType>

Flush mode setting.

When queries are executed within a transaction, if FlushModeType.AUTO is set on the Query or TypedQuery object, or if the flush mode setting for the persistence context is AUTO (the default) and a flush mode setting has not been specified for the Query or TypedQuery object, the persistence provider is responsible for ensuring that all updates to the state of all entities in the persistence context which could potentially affect the result of the query are visible to the processing of the query. The persistence provider implementation may achieve this by flushing those entities to the database or by some other means.

If FlushModeType.COMMIT is set, the effect of updates made to entities in the persistence context upon queries is unspecified.

If there is no transaction active, the persistence provider must not flush to the database.

Since:
Java Persistence 1.0

Enum Constant Summary
AUTO
          (Default) Flushing to occur at query execution.
COMMIT
          Flushing to occur at transaction commit.
 
Method Summary
static FlushModeType valueOf(java.lang.String name)
          Returns the enum constant of this type with the specified name.
static FlushModeType[] values()
          Returns an array containing the constants of this enum type, in the order they are declared.
 
Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf
 
Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait
 

Enum Constant Detail

COMMIT

public static final FlushModeType COMMIT
Flushing to occur at transaction commit. The provider may flush at other times, but is not required to.


AUTO

public static final FlushModeType AUTO
(Default) Flushing to occur at query execution.

Method Detail

values

public static FlushModeType[] values()
Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
for (FlushModeType c : FlushModeType.values())
    System.out.println(c);

Returns:
an array containing the constants of this enum type, in the order they are declared

valueOf

public static FlushModeType valueOf(java.lang.String name)
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:
name - the name of the enum constant to be returned.
Returns:
the enum constant with the specified name
Throws:
IllegalArgumentException - if this enum type has no constant with the specified name
java.lang.NullPointerException - if the argument is null


Submit a bug or feature

Copyright © 2009-2011, Oracle Corporation and/or its affiliates. All Rights Reserved. Use is subject to license terms.

Generated on 10-February-2011 12:41


Spec-Zone.ru - all specs in one place



free hit counter