/*
* Copyright 2002-2012 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.expression.spel.support;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import org.junit.Ignore;
import org.junit.Test;
import org.springframework.core.MethodParameter;
import org.springframework.core.convert.TypeDescriptor;
import org.springframework.expression.MethodExecutor;
public class Spr7538Tests {
@Ignore @Test
public void repro() throws Exception {
AlwaysTrueReleaseStrategy target = new AlwaysTrueReleaseStrategy();
BeanFactoryTypeConverter converter = new BeanFactoryTypeConverter();
StandardEvaluationContext context = new StandardEvaluationContext();
context.setTypeConverter(converter);
List<Foo> arguments = new ArrayList<Foo>();
// !!!! With the below line commented you'll get NPE. Uncomment and everything is OK!
//arguments.add(new Foo());
List<TypeDescriptor> paramDescriptors = new ArrayList<TypeDescriptor>();
Method method = AlwaysTrueReleaseStrategy.class.getMethod("checkCompleteness", List.class);
paramDescriptors.add(new TypeDescriptor(new MethodParameter(method, 0)));
List<TypeDescriptor> argumentTypes = new ArrayList<TypeDescriptor>();
argumentTypes.add(TypeDescriptor.forObject(arguments));
ReflectiveMethodResolver resolver = new ReflectiveMethodResolver();
MethodExecutor executor = resolver.resolve(context, target, "checkCompleteness", argumentTypes);
Object result = executor.execute(context, target, arguments);
System.out.println("Result: " + result);
}
public static class AlwaysTrueReleaseStrategy {
public boolean checkCompleteness(List<Foo> messages) {
return true;
}
}
public static class Foo{}
}