Class SetOnce<T>

A convenient class which offers a semi-immutable object wrapper implementation which allows one to set the value of an object exactly once, and retrieve it many times. If Set(T) is called more than once, AlreadySetException is thrown and the operation will fail.

This is a Lucene.NET EXPERIMENTAL API, use at your own risk
Inheritance
System.Object
SetOnce<T>
Namespace: Lucene.Net.Util
Assembly: Lucene.Net.dll
Syntax
public sealed class SetOnce<T> : object where T : class
Type Parameters
Name Description
T

Constructors

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SetOnce()

A default constructor which does not set the internal object, and allows setting it by calling Set(T).

Declaration
public SetOnce()
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SetOnce(T)

Creates a new instance with the internal object set to the given object. Note that any calls to Set(T) afterwards will result in AlreadySetException

Declaration
public SetOnce(T obj)
Parameters
Type Name Description
T obj
Exceptions
Type Condition
AlreadySetException

if called more than once

See Also

Methods

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Clone()

Declaration
public object Clone()
Returns
Type Description
System.Object
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Get()

Returns the object set by Set(T).

Declaration
public T Get()
Returns
Type Description
T
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Set(T)

Sets the given object. If the object has already been set, an exception is thrown.

Declaration
public void Set(T obj)
Parameters
Type Name Description
T obj