Package org.evrete.api

Interface RuleBuilderExceptionHandler

public interface RuleBuilderExceptionHandler

An exception handler that is invoked for unchecked exceptions thrown by RuleSet.addRule(RuleBuilder)

The RuleSet's default exception handler simply re-throws the exception, thus breaking the whole build process:

     handler = (context, builder, exception) -> {
         throw exception;
     };

Custom RuleBuilderExceptionHandler implementations allow developers to optionally omit failed rules, continue with a different RuleBuilder, or throw unchecked exception if the original (cause) exception is deemed unrecoverable.

See Also:

• RuleSet.setRuleBuilderExceptionHandler(RuleBuilderExceptionHandler)

Method Summary

Modifier and Type	Method	Description
void	handle(RuleSet<?> context, RuleBuilder<?> builder, RuntimeException exception)

Method Details

handle

void handle(RuleSet<?> context,
 RuleBuilder<?> builder,
 RuntimeException exception)

Parameters:

context - is either a Knowledge or a RuleSession instance

builder - rule builder that caused the exception

exception - the exception

Throws:

RuntimeException - if developer decides that the original exception is unrecoverable and re-throws the exception (or any other instance of RuntimeException)

See Also:

• RuleSet.setRuleBuilderExceptionHandler(RuleBuilderExceptionHandler)