org.springframework.expression.ConstructorResolver Maven / Gradle / Ivy
Show all versions of spring-expression Show documentation
/*
* Copyright 2002-2024 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;
import java.util.List;
import org.springframework.core.convert.TypeDescriptor;
import org.springframework.lang.Nullable;
/**
* A constructor resolver attempts to locate a constructor and returns a
* {@link ConstructorExecutor} that can be used to invoke that constructor.
*
* The {@code ConstructorExecutor} will be cached, but if it becomes stale the
* resolvers will be called again.
*
* @author Andy Clement
* @author Sam Brannen
* @since 3.0
* @see ConstructorExecutor
* @see MethodResolver
*/
@FunctionalInterface
public interface ConstructorResolver {
/**
* Within the supplied context, resolve a suitable constructor on the
* supplied type that can handle the specified arguments.
*
Returns a {@link ConstructorExecutor} that can be used to invoke that
* constructor (or {@code null} if no constructor could be found).
* @param context the current evaluation context
* @param typeName the fully-qualified name of the type upon which to look
* for the constructor
* @param argumentTypes the types of arguments that the constructor must be
* able to handle
* @return a {@code ConstructorExecutor} that can invoke the constructor,
* or {@code null} if the constructor cannot be found
*/
@Nullable
ConstructorExecutor resolve(EvaluationContext context, String typeName, List argumentTypes)
throws AccessException;
}