org.jeasy.rules.mvel

Class MVELRuleFactory

java.lang.Object

org.jeasy.rules.support.AbstractRuleFactory

org.jeasy.rules.mvel.MVELRuleFactory

public class MVELRuleFactory
extends AbstractRuleFactory

Factory to create MVELRule instances.

Author:

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

Constructor Summary

Constructors

Constructor and Description
MVELRuleFactory(RuleDefinitionReader reader) Create a new MVELRuleFactory with a given reader.
MVELRuleFactory(RuleDefinitionReader reader, org.mvel2.ParserContext parserContext) Create a new MVELRuleFactory with a given reader.

Method Summary

Modifier and Type	Method and Description
Rule	createRule(java.io.Reader ruleDescriptor) Create a new MVELRule from a Reader.
Rules	createRules(java.io.Reader rulesDescriptor) Create a set of MVELRule from a rule descriptor.
protected Rule	createSimpleRule(RuleDefinition ruleDefinition)

Methods inherited from class org.jeasy.rules.support.AbstractRuleFactory

createCompositeRule, createRule

Methods inherited from class java.lang.Object

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

Constructor Detail

MVELRuleFactory

public MVELRuleFactory(RuleDefinitionReader reader)

Create a new MVELRuleFactory with a given reader.

Parameters:

reader - used to read rule definitions

See Also:

YamlRuleDefinitionReader, JsonRuleDefinitionReader

MVELRuleFactory

public MVELRuleFactory(RuleDefinitionReader reader,
                       org.mvel2.ParserContext parserContext)

Create a new MVELRuleFactory with a given reader.

Parameters:

reader - used to read rule definitions

parserContext - used to parse condition/action expressions

See Also:

YamlRuleDefinitionReader, JsonRuleDefinitionReader

Method Detail

createRule

public Rule createRule(java.io.Reader ruleDescriptor)
                throws java.lang.Exception

Create a new MVELRule from a Reader. The rule descriptor should contain a single rule definition. If no rule definitions are found, a IllegalArgumentException will be thrown. If more than a rule is defined in the descriptor, the first rule will be returned.

Parameters:

ruleDescriptor - descriptor of rule definition

Returns:

a new rule

Throws:

java.lang.Exception - if unable to create the rule from the descriptor

createRules

public Rules createRules(java.io.Reader rulesDescriptor)
                  throws java.lang.Exception

Create a set of MVELRule from a rule descriptor.

Parameters:

rulesDescriptor - descriptor of rule definitions

Returns:

a set of rules

Throws:

java.lang.Exception - if unable to create rules from the descriptor

createSimpleRule

protected Rule createSimpleRule(RuleDefinition ruleDefinition)

Specified by:

createSimpleRule in class AbstractRuleFactory