Class AgentBuilder
java.lang.Object
org.opendaylight.yang.gen.v1.http.openconfig.net.yang.openflow.rev181121.openflow.agent.top.AgentBuilder
Class that builds
Agent instances. Overall design of the class is that of a
fluent interface, where method chaining is used.
In general, this class is supposed to be used like this template:
Agent createAgent(int fooXyzzy, int barBaz) {
return new AgentBuilder()
.setFoo(new FooBuilder().setXyzzy(fooXyzzy).build())
.setBar(new BarBuilder().setBaz(barBaz).build())
.build();
}
This pattern is supported by the immutable nature of Agent, as instances can be freely passed around without worrying about synchronization issues.
As a side note: method chaining results in:
- very efficient Java bytecode, as the method invocation result, in this case the Builder reference, is
on the stack, so further method invocations just need to fill method arguments for the next method
invocation, which is terminated by
build(), which is then returned from the method - better understanding by humans, as the scope of mutable state (the builder) is kept to a minimum and is very localized
- better optimization opportunities, as the object scope is minimized in terms of invocation (rather than method) stack, making escape analysis a lot easier. Given enough compiler (JIT/AOT) prowess, the cost of th builder object can be completely eliminated
- See Also:
-
Constructor Summary
ConstructorsConstructorDescriptionConstruct an empty builder.AgentBuilder(Agent base) Construct a builder initialized with state from specifiedAgent. -
Method Summary
Modifier and TypeMethodDescriptionaddAugmentation(org.opendaylight.yangtools.yang.binding.Augmentation<Agent> augmentation) Add an augmentation to this builder's product.<E$$ extends org.opendaylight.yangtools.yang.binding.Augmentation<Agent>>
E$$augmentation(Class<E$$> augmentationType) Return the specified augmentation, if it is present in this builder.@NonNull Agentbuild()A newAgentinstance.static @NonNull Agentempty()Get empty instance of Agent.Return current value associated with the property corresponding toAgent.getConfig().getState()Return current value associated with the property corresponding toAgent.getState().removeAugmentation(Class<? extends org.opendaylight.yangtools.yang.binding.Augmentation<Agent>> augmentationType) Remove an augmentation from this builder's product.Set the property corresponding toAgent.getConfig()to the specified value.Set the property corresponding toAgent.getState()to the specified value.
-
Constructor Details
-
AgentBuilder
public AgentBuilder()Construct an empty builder. -
AgentBuilder
Construct a builder initialized with state from specifiedAgent.- Parameters:
base- Agent from which the builder should be initialized
-
-
Method Details
-
empty
Get empty instance of Agent.- Returns:
- An empty
Agent
-
getConfig
Return current value associated with the property corresponding toAgent.getConfig().- Returns:
- current value
-
getState
Return current value associated with the property corresponding toAgent.getState().- Returns:
- current value
-
augmentation
public <E$$ extends org.opendaylight.yangtools.yang.binding.Augmentation<Agent>> E$$ augmentation(Class<E$$> augmentationType) Return the specified augmentation, if it is present in this builder.- Type Parameters:
E$$- augmentation type- Parameters:
augmentationType- augmentation type class- Returns:
- Augmentation object from this builder, or
nullif not present - Throws:
NullPointerException- ifaugmentTypeisnull
-
setConfig
Set the property corresponding toAgent.getConfig()to the specified value.- Parameters:
value- desired value- Returns:
- this builder
-
setState
Set the property corresponding toAgent.getState()to the specified value.- Parameters:
value- desired value- Returns:
- this builder
-
addAugmentation
public AgentBuilder addAugmentation(org.opendaylight.yangtools.yang.binding.Augmentation<Agent> augmentation) Add an augmentation to this builder's product.- Parameters:
augmentation- augmentation to be added- Returns:
- this builder
- Throws:
NullPointerException- ifaugmentationis null
-
removeAugmentation
public AgentBuilder removeAugmentation(Class<? extends org.opendaylight.yangtools.yang.binding.Augmentation<Agent>> augmentationType) Remove an augmentation from this builder's product. If this builder does not track such an augmentation type, this method does nothing.- Parameters:
augmentationType- augmentation type to be removed- Returns:
- this builder
-
build
A newAgentinstance.- Returns:
- A new
Agentinstance.
-