Package org.apache.zookeeper
Enum CreateMode
- java.lang.Object
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- java.lang.Enum<CreateMode>
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- org.apache.zookeeper.CreateMode
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- All Implemented Interfaces:
Serializable,Comparable<CreateMode>
@Public public enum CreateMode extends Enum<CreateMode>
CreateMode value determines how the znode is created on ZooKeeper.
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Enum Constant Summary
Enum Constants Enum Constant Description CONTAINERThe znode will be a container node.EPHEMERALThe znode will be deleted upon the client's disconnect.EPHEMERAL_SEQUENTIALThe znode will be deleted upon the client's disconnect, and its name will be appended with a monotonically increasing number.PERSISTENTThe znode will not be automatically deleted upon client's disconnect.PERSISTENT_SEQUENTIALThe znode will not be automatically deleted upon client's disconnect, and its name will be appended with a monotonically increasing number.PERSISTENT_SEQUENTIAL_WITH_TTLThe znode will not be automatically deleted upon client's disconnect, and its name will be appended with a monotonically increasing number.PERSISTENT_WITH_TTLThe znode will not be automatically deleted upon client's disconnect.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description static CreateModefromFlag(int flag)Map an integer value to a CreateMode valuestatic CreateModefromFlag(int flag, CreateMode defaultMode)Map an integer value to a CreateMode valuebooleanisContainer()booleanisEphemeral()booleanisSequential()booleanisTTL()inttoFlag()static CreateModevalueOf(String name)Returns the enum constant of this type with the specified name.static CreateMode[]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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PERSISTENT
public static final CreateMode PERSISTENT
The znode will not be automatically deleted upon client's disconnect.
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PERSISTENT_SEQUENTIAL
public static final CreateMode PERSISTENT_SEQUENTIAL
The znode will not be automatically deleted upon client's disconnect, and its name will be appended with a monotonically increasing number.
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EPHEMERAL
public static final CreateMode EPHEMERAL
The znode will be deleted upon the client's disconnect.
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EPHEMERAL_SEQUENTIAL
public static final CreateMode EPHEMERAL_SEQUENTIAL
The znode will be deleted upon the client's disconnect, and its name will be appended with a monotonically increasing number.
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CONTAINER
public static final CreateMode CONTAINER
The znode will be a container node. Container nodes are special purpose nodes useful for recipes such as leader, lock, etc. When the last child of a container is deleted, the container becomes a candidate to be deleted by the server at some point in the future. Given this property, you should be prepared to getKeeperException.NoNodeExceptionwhen creating children inside of this container node.
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PERSISTENT_WITH_TTL
public static final CreateMode PERSISTENT_WITH_TTL
The znode will not be automatically deleted upon client's disconnect. However if the znode has not been modified within the given TTL, it will be deleted once it has no children.
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PERSISTENT_SEQUENTIAL_WITH_TTL
public static final CreateMode PERSISTENT_SEQUENTIAL_WITH_TTL
The znode will not be automatically deleted upon client's disconnect, and its name will be appended with a monotonically increasing number. However if the znode has not been modified within the given TTL, it will be deleted once it has no children.
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Method Detail
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values
public static CreateMode[] 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 (CreateMode c : CreateMode.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 CreateMode 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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isEphemeral
public boolean isEphemeral()
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isSequential
public boolean isSequential()
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isContainer
public boolean isContainer()
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isTTL
public boolean isTTL()
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toFlag
public int toFlag()
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fromFlag
public static CreateMode fromFlag(int flag) throws KeeperException
Map an integer value to a CreateMode value- Throws:
KeeperException
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fromFlag
public static CreateMode fromFlag(int flag, CreateMode defaultMode)
Map an integer value to a CreateMode value
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