Class IsisBuilder
java.lang.Object
org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.isis.topology.rev131021.isis.topology.type.IsisBuilder
Class that builds
Isis
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:
Isis createIsis(int fooXyzzy, int barBaz) {
return new IsisBuilder()
.setFoo(new FooBuilder().setXyzzy(fooXyzzy).build())
.setBar(new BarBuilder().setBaz(barBaz).build())
.build();
}
This pattern is supported by the immutable nature of Isis, 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
ConstructorDescriptionConstruct an empty builder.IsisBuilder
(Isis base) Construct a builder initialized with state from specifiedIsis
. -
Method Summary
Modifier and TypeMethodDescriptionaddAugmentation
(org.opendaylight.yangtools.yang.binding.Augmentation<Isis> augmentation) Add an augmentation to this builder's product.<E$$ extends org.opendaylight.yangtools.yang.binding.Augmentation<Isis>>
E$$augmentation
(Class<E$$> augmentationType) Return the specified augmentation, if it is present in this builder.@NonNull Isis
build()
A newIsis
instance.removeAugmentation
(Class<? extends org.opendaylight.yangtools.yang.binding.Augmentation<Isis>> augmentationType) Remove an augmentation from this builder's product.
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Constructor Details
-
IsisBuilder
public IsisBuilder()Construct an empty builder. -
IsisBuilder
Construct a builder initialized with state from specifiedIsis
.- Parameters:
base
- Isis from which the builder should be initialized
-
-
Method Details
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augmentation
public <E$$ extends org.opendaylight.yangtools.yang.binding.Augmentation<Isis>> 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
null
if not present - Throws:
NullPointerException
- ifaugmentType
isnull
-
addAugmentation
public IsisBuilder addAugmentation(org.opendaylight.yangtools.yang.binding.Augmentation<Isis> augmentation) Add an augmentation to this builder's product.- Parameters:
augmentation
- augmentation to be added- Returns:
- this builder
- Throws:
NullPointerException
- ifaugmentation
is null
-
removeAugmentation
public IsisBuilder removeAugmentation(Class<? extends org.opendaylight.yangtools.yang.binding.Augmentation<Isis>> 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 newIsis
instance.- Returns:
- A new
Isis
instance.
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