Package com.linecorp.armeria.common.util

Class AbstractOption<T extends AbstractOption<T,U,V>,U extends AbstractOptionValue<U,T,V>,V>

java.lang.Object

com.linecorp.armeria.common.util.AbstractOption<T,U,V>

Type Parameters:

T - the type of the option.

U - the type of the option value holder.

V - the type of the option value.

All Implemented Interfaces:

Comparable<AbstractOption<?,?,?>>

Direct Known Subclasses:

ClientFactoryOption, ClientOption

public abstract class AbstractOption<T extends AbstractOption<T,U,V>,U extends AbstractOptionValue<U,T,V>,V>
extends Object
implements Comparable<AbstractOption<?,?,?>>

A configuration option.

See Also:

AbstractOptionValue, AbstractOptions

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static interface	AbstractOption.Factory<T extends AbstractOption<T,U,V>,U extends AbstractOptionValue<U,T,V>,V>	Creates a new option instance.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractOption(String name, V defaultValue, Function<V,V> validator, BiFunction<U,U,U> mergeFunction)	Creates a new instance.

Method Summary

Modifier and Type	Method	Description
protected static <T extends Set<?>> T	allOptions(Class<?> type)	Returns all available options of the specified option type.
int	compareTo(AbstractOption<?,?,?> o)
V	defaultValue()	Returns the default value of this option.
protected static <T extends AbstractOption<T, U, V>, U extends AbstractOptionValue<U, T, V>, V> T	define(Class<?> type, String name, V defaultValue, AbstractOption.Factory<T,U,V> optionFactory, Function<V,V> validator, BiFunction<U,U,U> mergeFunction)	Defines a new option.
protected abstract U	doNewValue(V value)	Implement this method to return a new option value.
boolean	equals(Object obj)
int	hashCode()
String	name()	Returns the name of this option.
U	newValue(V value)	Returns a newly created option value.
protected static <T extends AbstractOption<?, ?, ?>> T	of(Class<?> type, String name)	Returns the option of the specified option type and name.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

AbstractOption

protected AbstractOption(String name,
 V defaultValue,
 Function<V,V> validator,
 BiFunction<U,U,U> mergeFunction)

Creates a new instance.

Parameters:

name - the name of this option

Method Details

allOptions

protected static <T extends Set<?>> T allOptions(Class<?> type)

Returns all available options of the specified option type.

Returns:

the options which are instances of the specified type.

of

protected static <T extends AbstractOption<?,
?,
?>>
T of(Class<?> type,
 String name)

Returns the option of the specified option type and name.

Returns:

the option which is an instance of the specified type and which has the specified name.

define

protected static <T extends AbstractOption<T,
U,
V>,
U extends AbstractOptionValue<U,
T,
V>,
V>
T define(Class<?> type,
 String name,
 V defaultValue,
 AbstractOption.Factory<T,U,V> optionFactory,
 Function<V,V> validator,
 BiFunction<U,U,U> mergeFunction)

Defines a new option.

Type Parameters:

T - the type of the option.

U - the type of the option value holder.

V - the type of the option value.

Parameters:

type - the type of the option, e.g. ClientOption.

name - the name of the option, e.g. "RESPONSE_TIMEOUT_MILLIS".

defaultValue - the default value of the option.

optionFactory - the AbstractOption.Factory that creates a new option.

validator - the Function which is used for validating ane normalizing an option value.

mergeFunction - the BiFunction which is used for merging old and new option values.

Returns:

a new option instance.

Throws:

IllegalStateException - if an option with the specified name exists already.

name

public final String name()

Returns the name of this option.

defaultValue

public final V defaultValue()

Returns the default value of this option.

newValue

public final U newValue(V value)

Returns a newly created option value.

doNewValue

protected abstract U doNewValue(V value)

Implement this method to return a new option value.

hashCode

public final int hashCode()

Overrides:

hashCode in class Object

compareTo

public final int compareTo(AbstractOption<?,?,?> o)

Specified by:

compareTo in interface Comparable<T extends AbstractOption<T,U,V>>

equals

public final boolean equals(Object obj)

Overrides:

equals in class Object

toString

public final String toString()

Overrides:

toString in class Object