org.hibernate

Enum FlushMode

java.lang.Object

java.lang.Enum<FlushMode>

org.hibernate.FlushMode

All Implemented Interfaces:

Serializable, Comparable<FlushMode>

public enum FlushMode
extends Enum<FlushMode>

Represents a flushing strategy. The flush process synchronizes database state with session state by detecting state changes and executing SQL statements.

Author:

Gavin King

See Also:

Session.setFlushMode(FlushMode), Query.setFlushMode(FlushMode), Criteria.setFlushMode(FlushMode)

Enum Constant Summary

Enum Constants

Enum Constant and Description
ALWAYS The Session is flushed before every query.
AUTO The Session is sometimes flushed before query execution in order to ensure that queries never return stale state.
COMMIT The Session is flushed when EntityTransaction.commit() is called.
MANUAL The Session is only ever flushed when Session.flush() is explicitly called by the application.

Method Summary

Modifier and Type	Method and Description
static FlushMode	interpretExternalSetting(String externalName) Interprets an external representation of the flush mode.
static boolean	isManualFlushMode(FlushMode mode) Deprecated. Just use equality check against MANUAL. Legacy from before this was an enum
boolean	lessThan(FlushMode other) Checks to see if this flush mode is less than the given flush mode.
static FlushMode	valueOf(String name) Returns the enum constant of this type with the specified name.
static FlushMode[]	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

MANUAL

public static final FlushMode MANUAL

The Session is only ever flushed when Session.flush() is explicitly called by the application. This mode is very efficient for read only transactions.

COMMIT

public static final FlushMode COMMIT

The Session is flushed when EntityTransaction.commit() is called.

AUTO

public static final FlushMode AUTO

The Session is sometimes flushed before query execution in order to ensure that queries never return stale state. This is the default flush mode.

ALWAYS

public static final FlushMode ALWAYS

The Session is flushed before every query. This is almost always unnecessary and inefficient.

Method Detail

values

public static FlushMode[] 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 (FlushMode c : FlushMode.values())
    System.out.println(c);

Returns:

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

valueOf

public static FlushMode valueOf(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

NullPointerException - if the argument is null

lessThan

public boolean lessThan(FlushMode other)

Checks to see if this flush mode is less than the given flush mode.

Parameters:

other - THe flush mode value to be checked against this

Returns:

true indicates other is less than this; false otherwise

isManualFlushMode

@Deprecated
public static boolean isManualFlushMode(FlushMode mode)

Deprecated. Just use equality check against MANUAL. Legacy from before this was an enum

Checks to see if the given mode is the same as MANUAL.

Parameters:

mode - The mode to check

Returns:

true/false

interpretExternalSetting

public static FlushMode interpretExternalSetting(String externalName)

Interprets an external representation of the flush mode. null is returned as null, otherwise valueOf(String) is used with the upper-case version of the incoming value. An unknown, non-null value results in a MappingException being thrown.

Parameters:

externalName - The external representation

Returns:

The interpreted FlushMode value.

Throws:

MappingException - Indicates an unrecognized external representation