org.grouplens.lenskit.eval.script

Class ConfigMethodInvoker

java.lang.Object

org.grouplens.lenskit.eval.script.ConfigMethodInvoker

public class ConfigMethodInvoker
extends Object

Utilities for searching for methods of configurable objects.

Constructor Summary

Constructors

Constructor and Description
ConfigMethodInvoker(EvalScriptEngine engine, EvalProject project)

Method Summary

Modifier and Type	Method and Description
Object	callExternalMethod(String name, Object... args) Find an external method (a builder or task) and return a closure that, when invoked, constructs and configures it.
void	clearDeps(Object obj)
List<ListenableFuture<?>>	getDeps(Object obj)
Object	invokeConfigurationMethod(Object target, String name, Object... args)
void	registerDep(Object obj, ListenableFuture<?> dep)
org.apache.commons.lang3.tuple.Pair<Object[],groovy.lang.Closure>	splitClosure(Object[] args) Split an array of arguments into arguments a trailing closure.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConfigMethodInvoker

public ConfigMethodInvoker(@Nonnull
                           EvalScriptEngine engine,
                           @Nonnull
                           EvalProject project)

Method Detail

registerDep

public void registerDep(Object obj,
                        ListenableFuture<?> dep)

getDeps

public List<ListenableFuture<?>> getDeps(Object obj)

clearDeps

public void clearDeps(Object obj)

splitClosure

public org.apache.commons.lang3.tuple.Pair<Object[],groovy.lang.Closure> splitClosure(Object[] args)

Split an array of arguments into arguments a trailing closure.

Parameters:

args - The argument array.

Returns:

A pair consisting of the arguments, except for any trailing closure, and the closure. If args does not have end with a closure, Pair.of(args, null) is returned.

callExternalMethod

public Object callExternalMethod(String name,
                                 Object... args)
                          throws NoSuchMethodException

Find an external method (a builder or task) and return a closure that, when invoked, constructs and configures it. It does not invoke the builder or task, that is left up to the caller.

Parameters:

name - The method name.

Returns:

The constructed and configured object corresponding to this method.

Throws:

NoSuchMethodException

invokeConfigurationMethod

public Object invokeConfigurationMethod(Object target,
                                        String name,
                                        Object... args)