Class NodeGroupStatisticsBuilder
java.lang.Object
org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.NodeGroupStatisticsBuilder
Class that builds
NodeGroupStatistics
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:
NodeGroupStatistics createNodeGroupStatistics(int fooXyzzy, int barBaz) {
return new NodeGroupStatisticsBuilder()
.setFoo(new FooBuilder().setXyzzy(fooXyzzy).build())
.setBar(new BarBuilder().setBaz(barBaz).build())
.build();
}
This pattern is supported by the immutable nature of NodeGroupStatistics, 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:
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Constructor Summary
ConstructorDescriptionConstruct an empty builder.Construct a new builder initialized from specifiedGroupStatistics
.Construct a builder initialized with state from specifiedNodeGroupStatistics
. -
Method Summary
Modifier and TypeMethodDescription@NonNull NodeGroupStatistics
build()
A newNodeGroupStatistics
instance.void
fieldsFrom
(org.opendaylight.yangtools.yang.binding.DataObject arg) Set fields from given grouping argument.Return current value associated with the property corresponding toGroupStatistics.getGroupStatistics()
.Set the property corresponding toGroupStatistics.getGroupStatistics()
to the specified value.
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Constructor Details
-
NodeGroupStatisticsBuilder
public NodeGroupStatisticsBuilder()Construct an empty builder. -
NodeGroupStatisticsBuilder
Construct a new builder initialized from specifiedGroupStatistics
.- Parameters:
arg
- org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.GroupStatistics from which the builder should be initialized
-
NodeGroupStatisticsBuilder
Construct a builder initialized with state from specifiedNodeGroupStatistics
.- Parameters:
base
- NodeGroupStatistics from which the builder should be initialized
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Method Details
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fieldsFrom
public void fieldsFrom(org.opendaylight.yangtools.yang.binding.DataObject arg) Set fields from given grouping argument. Valid argument is instance of one of following types:- Parameters:
arg
- grouping object- Throws:
IllegalArgumentException
- if given argument is none of valid types or has property with incompatible value
-
getGroupStatistics
Return current value associated with the property corresponding toGroupStatistics.getGroupStatistics()
.- Returns:
- current value
-
setGroupStatistics
Set the property corresponding toGroupStatistics.getGroupStatistics()
to the specified value.- Parameters:
value
- desired value- Returns:
- this builder
-
build
A newNodeGroupStatistics
instance.- Returns:
- A new
NodeGroupStatistics
instance.
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