org.jeasy.rules.api

Class Facts

java.lang.Object

org.jeasy.rules.api.Facts

All Implemented Interfaces:

java.lang.Iterable<java.util.Map.Entry<java.lang.String,java.lang.Object>>

public class Facts
extends java.lang.Object
implements java.lang.Iterable<java.util.Map.Entry<java.lang.String,java.lang.Object>>

Represents a set of named facts. Facts have unique name within a Facts object.

Author:

Mahmoud Ben Hassine (mahmoud.benhassine@icloud.com)

Constructor Summary

Constructors

Constructor and Description
Facts()

Method Summary

Modifier and Type	Method and Description
java.util.Map<java.lang.String,java.lang.Object>	asMap() Return facts as a map.
<T> T	get(java.lang.String name) Get a fact by name.
java.util.Iterator<java.util.Map.Entry<java.lang.String,java.lang.Object>>	iterator()
java.lang.Object	put(java.lang.String name, java.lang.Object fact) Put a fact in the working memory.
java.lang.Object	remove(java.lang.String name) Remove fact.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

Facts

public Facts()

Method Detail

put

public java.lang.Object put(java.lang.String name,
                            java.lang.Object fact)

Put a fact in the working memory. This will replace any fact having the same name.

Parameters:

name - fact name

fact - object to put in the working memory

Returns:

the previous value associated with name, or null if there was no mapping for name. (A null return can also indicate that the map previously associated null with name.)

remove

public java.lang.Object remove(java.lang.String name)

Remove fact.

Parameters:

name - of fact to remove

Returns:

the previous value associated with name, or null if there was no mapping for name. (A null return can also indicate that the map previously associated null with name.)

get

public <T> T get(java.lang.String name)

Get a fact by name.

Type Parameters:

T - type of the fact

Parameters:

name - of the fact

Returns:

the fact having the given name, or null if there is no fact with the given name

asMap

public java.util.Map<java.lang.String,java.lang.Object> asMap()

Return facts as a map.

Returns:

the current facts as a HashMap

iterator

public java.util.Iterator<java.util.Map.Entry<java.lang.String,java.lang.Object>> iterator()

Specified by:

iterator in interface java.lang.Iterable<java.util.Map.Entry<java.lang.String,java.lang.Object>>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object