org.apache.ratis.conf

Class Parameters

java.lang.Object

org.apache.ratis.conf.Parameters

public class Parameters
extends Object

A generic parameter map. The difference between this class and RaftProperties is that RaftProperties is String based, i.e. properties are strings, while this class is Object based, i.e. parameters can be any objects. Null keys or null values are not supported. This class is thread safe.

Constructor Summary

Constructors

Constructor and Description
Parameters()

Method Summary

Modifier and Type	Method and Description
<T> T	get(String key, Class<T> valueClass)
<T> T	getNonNull(String key, Class<T> valueClass) The same as get(String, Class) except that this method throws a NullPointerException if the key does not map to any value.
<T> T	put(String key, T value, Class<T> valueClass) Put the key-value pair to the map.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Parameters

public Parameters()

Method Detail

put

public <T> T put(String key,
                 T value,
                 Class<T> valueClass)

Put the key-value pair to the map.

get

public <T> T get(String key,
                 Class<T> valueClass)

Type Parameters:

T - The value type.

Returns:

The value mapped to the given key; or return null if the key does not map to any value.

Throws:

IllegalArgumentException - if the mapped value is not an instance of the given class.

getNonNull

public <T> T getNonNull(String key,
                        Class<T> valueClass)

The same as get(String, Class) except that this method throws a NullPointerException if the key does not map to any value.