org.jeasy.rules.spel

Class SpELRule

java.lang.Object

org.jeasy.rules.core.BasicRule

org.jeasy.rules.spel.SpELRule

All Implemented Interfaces:

java.lang.Comparable<Rule>, Rule

public class SpELRule
extends BasicRule

A Rule implementation that uses SpEL to evaluate and execute the rule.

Author:

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

Field Summary

Fields inherited from class org.jeasy.rules.core.BasicRule

description, name, priority

Fields inherited from interface org.jeasy.rules.api.Rule

DEFAULT_DESCRIPTION, DEFAULT_NAME, DEFAULT_PRIORITY

Constructor Summary

Constructors

Constructor and Description
SpELRule() Create a new SpEL rule.
SpELRule(org.springframework.expression.BeanResolver beanResolver) Create a new SpEL rule.
SpELRule(org.springframework.expression.ParserContext parserContext) Create a new SpEL rule.
SpELRule(org.springframework.expression.ParserContext parserContext, org.springframework.expression.BeanResolver beanResolver) Create a new SpEL rule.

Method Summary

Modifier and Type	Method and Description
SpELRule	description(java.lang.String description) Set rule description.
boolean	evaluate(Facts facts)
void	execute(Facts facts)
SpELRule	name(java.lang.String name) Set rule name.
SpELRule	priority(int priority) Set rule priority.
SpELRule	then(java.lang.String action) Add an action specified as an SpEL expression to the rule.
SpELRule	when(java.lang.String condition) Specify the rule's condition as SpEL expression.

Methods inherited from class org.jeasy.rules.core.BasicRule

compareTo, equals, getDescription, getName, getPriority, hashCode, setDescription, setPriority, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

SpELRule

public SpELRule()

Create a new SpEL rule.

SpELRule

public SpELRule(org.springframework.expression.ParserContext parserContext)

Create a new SpEL rule.

Parameters:

parserContext - used when parsing expressions

SpELRule

public SpELRule(org.springframework.expression.BeanResolver beanResolver)

Create a new SpEL rule.

Parameters:

beanResolver - used to resolve bean references in expressions

SpELRule

public SpELRule(org.springframework.expression.ParserContext parserContext,
                org.springframework.expression.BeanResolver beanResolver)

Create a new SpEL rule.

Parameters:

parserContext - used when parsing expressions

beanResolver - used to resolve bean references in expressions

Method Detail

name

public SpELRule name(java.lang.String name)

Set rule name.

Parameters:

name - of the rule

Returns:

this rule

description

public SpELRule description(java.lang.String description)

Set rule description.

Parameters:

description - of the rule

Returns:

this rule

priority

public SpELRule priority(int priority)

Set rule priority.

Parameters:

priority - of the rule

Returns:

this rule

when

public SpELRule when(java.lang.String condition)

Specify the rule's condition as SpEL expression.

Parameters:

condition - of the rule

Returns:

this rule

then

public SpELRule then(java.lang.String action)

Add an action specified as an SpEL expression to the rule.

Parameters:

action - to add to the rule

Returns:

this rule

evaluate

public boolean evaluate(Facts facts)

Specified by:

evaluate in interface Rule

Overrides:

evaluate in class BasicRule

execute

public void execute(Facts facts)
             throws java.lang.Exception

Specified by:

execute in interface Rule

Overrides:

execute in class BasicRule

Throws:

java.lang.Exception