org.springframework.expression.spel.support.DataBindingMethodResolver Maven / Gradle / Ivy
Show all versions of spring-expression Show documentation
/*
* Copyright 2002-2018 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
*
* https://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.lang.reflect.Modifier;
import java.util.List;
import org.springframework.core.convert.TypeDescriptor;
import org.springframework.expression.AccessException;
import org.springframework.expression.EvaluationContext;
import org.springframework.expression.MethodExecutor;
import org.springframework.lang.Nullable;
/**
* A {@link org.springframework.expression.MethodResolver} variant for data binding
* purposes, using reflection to access instance methods on a given target object.
*
* This accessor does not resolve static methods and also no technical methods
* on {@code java.lang.Object} or {@code java.lang.Class}.
* For unrestricted resolution, choose {@link ReflectiveMethodResolver} instead.
*
* @author Juergen Hoeller
* @since 4.3.15
* @see #forInstanceMethodInvocation()
* @see DataBindingPropertyAccessor
*/
public final class DataBindingMethodResolver extends ReflectiveMethodResolver {
private DataBindingMethodResolver() {
super();
}
@Override
@Nullable
public MethodExecutor resolve(EvaluationContext context, Object targetObject, String name,
List argumentTypes) throws AccessException {
if (targetObject instanceof Class) {
throw new IllegalArgumentException("DataBindingMethodResolver does not support Class targets");
}
return super.resolve(context, targetObject, name, argumentTypes);
}
@Override
protected boolean isCandidateForInvocation(Method method, Class targetClass) {
if (Modifier.isStatic(method.getModifiers())) {
return false;
}
Class clazz = method.getDeclaringClass();
return (clazz != Object.class && clazz != Class.class && !ClassLoader.class.isAssignableFrom(targetClass));
}
/**
* Create a new data-binding method resolver for instance method resolution.
*/
public static DataBindingMethodResolver forInstanceMethodInvocation() {
return new DataBindingMethodResolver();
}
}