Package com.helix.core

Class DefaultRuleEngine

java.lang.Object

com.helix.core.DefaultRuleEngine

All Implemented Interfaces:

RuleEngine, AutoCloseable

public class DefaultRuleEngine
extends Object
implements RuleEngine, AutoCloseable

Default implementation of RuleEngine orchestrating compilation and execution.

Constructor Summary

Constructors

Constructor	Description
DefaultRuleEngine()
DefaultRuleEngine(RuleCompiler compiler, SyncExecutor syncExecutor, AsyncExecutor asyncExecutor)

Method Summary

Modifier and Type	Method	Description
void	close()
CompiledRule	compile(Rule rule)	Compiles a raw rule into an executable rule instance.
ExecutionResult	execute(CompiledRule rule, ExecutionContext context)	Synchronously executes a compiled rule against the provided context.
CompletableFuture<ExecutionResult>	executeAsync(CompiledRule rule, ExecutionContext context)	Asynchronously executes a compiled rule against the provided context.

Methods inherited from class java.lang.Object

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

Constructor Details

DefaultRuleEngine

public DefaultRuleEngine()

DefaultRuleEngine

public DefaultRuleEngine(RuleCompiler compiler,
 SyncExecutor syncExecutor,
 AsyncExecutor asyncExecutor)

Method Details

compile

public CompiledRule compile(Rule rule)
                     throws RuleCompilationException

Description copied from interface: RuleEngine

Compiles a raw rule into an executable rule instance.

Specified by:

compile in interface RuleEngine

Parameters:

rule - the raw rule definition

Returns:

compiled rule instance

Throws:

RuleCompilationException - if compilation fails

execute

public ExecutionResult execute(CompiledRule rule,
 ExecutionContext context)
                        throws RuleExecutionException

Description copied from interface: RuleEngine

Synchronously executes a compiled rule against the provided context.

Specified by:

execute in interface RuleEngine

Parameters:

rule - the compiled rule

context - the execution context

Returns:

the execution result

Throws:

RuleExecutionException - if execution fails

executeAsync

public CompletableFuture<ExecutionResult> executeAsync(CompiledRule rule,
 ExecutionContext context)

Description copied from interface: RuleEngine

Asynchronously executes a compiled rule against the provided context.

Specified by:

executeAsync in interface RuleEngine

Parameters:

rule - the compiled rule

context - the execution context

Returns:

a CompletableFuture wrapping the execution result

close

public void close()

Specified by:

close in interface AutoCloseable