Enum Service.State
- java.lang.Object
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- java.lang.Enum<Service.State>
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- com.google.common.util.concurrent.Service.State
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Comparable<Service.State>
- Enclosing interface:
- Service
public static enum Service.State extends java.lang.Enum<Service.State>
The lifecycle states of a service.The ordering of the
Service.State
enum is defined such that if there is a state transition fromA -> B
thenA.compareTo(B) < 0
. N.B. The converse is not true, i.e. ifA.compareTo(B) < 0
then there is not guaranteed to be a valid state transitionA -> B
.- Since:
- 9.0 (in 1.0 as
com.google.common.base.Service.State
)
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Enum Constant Summary
Enum Constants Enum Constant Description FAILED
A service in this state has encountered a problem and may not be operational.NEW
A service in this state is inactive.RUNNING
A service in this state is operational.STARTING
A service in this state is transitioning toRUNNING
.STOPPING
A service in this state is transitioning toTERMINATED
.TERMINATED
A service in this state has completed execution normally.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static Service.State
valueOf(java.lang.String name)
Returns the enum constant of this type with the specified name.static Service.State[]
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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NEW
public static final Service.State NEW
A service in this state is inactive. It does minimal work and consumes minimal resources.
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STARTING
public static final Service.State STARTING
A service in this state is transitioning toRUNNING
.
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RUNNING
public static final Service.State RUNNING
A service in this state is operational.
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STOPPING
public static final Service.State STOPPING
A service in this state is transitioning toTERMINATED
.
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TERMINATED
public static final Service.State TERMINATED
A service in this state has completed execution normally. It does minimal work and consumes minimal resources.
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FAILED
public static final Service.State FAILED
A service in this state has encountered a problem and may not be operational. It cannot be started nor stopped.
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Method Detail
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values
public static Service.State[] 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 (Service.State c : Service.State.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 Service.State 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:
java.lang.IllegalArgumentException
- if this enum type has no constant with the specified namejava.lang.NullPointerException
- if the argument is null
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