- java.lang.Object
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- java.lang.Enum<LockMode>
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- org.datanucleus.state.LockMode
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- All Implemented Interfaces:
Serializable
,Comparable<LockMode>
public enum LockMode extends Enum<LockMode>
Locking modes for persistable objects.
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Enum Constant Summary
Enum Constants Enum Constant Description LOCK_NONE
No locking specified.LOCK_OPTIMISTIC_READ
Optimistic locking.LOCK_OPTIMISTIC_WRITE
Optimistic locking, plus forced version update at commit.LOCK_PESSIMISTIC_READ
Pessimistic locking.LOCK_PESSIMISTIC_WRITE
Pessimistic locking, plus forced version update at commit.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static LockMode
valueOf(String name)
Returns the enum constant of this type with the specified name.static LockMode[]
values()
Returns an array containing the constants of this enum type, in the order they are declared.
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Enum Constant Detail
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LOCK_NONE
public static final LockMode LOCK_NONE
No locking specified. Use default type.
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LOCK_OPTIMISTIC_READ
public static final LockMode LOCK_OPTIMISTIC_READ
Optimistic locking.
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LOCK_OPTIMISTIC_WRITE
public static final LockMode LOCK_OPTIMISTIC_WRITE
Optimistic locking, plus forced version update at commit.
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LOCK_PESSIMISTIC_READ
public static final LockMode LOCK_PESSIMISTIC_READ
Pessimistic locking.
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LOCK_PESSIMISTIC_WRITE
public static final LockMode LOCK_PESSIMISTIC_WRITE
Pessimistic locking, plus forced version update at commit.
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Method Detail
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values
public static LockMode[] 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 (LockMode c : LockMode.values()) System.out.println(c);
- Returns:
- an array containing the constants of this enum type, in the order they are declared
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valueOf
public static LockMode 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 nameNullPointerException
- if the argument is null
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