org.springframework.beans.factory.support.LookupOverride Maven / Gradle / Ivy
/*
* Copyright 2002-2007 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.beans.factory.support;
import java.lang.reflect.Method;
import org.springframework.util.Assert;
import org.springframework.util.ObjectUtils;
/**
* Represents an override of a method that looks up an object in the same IoC context.
*
* Methods eligible for lookup override must not have arguments.
*
* @author Rod Johnson
* @author Juergen Hoeller
* @since 1.1
*/
public class LookupOverride extends MethodOverride {
private final String beanName;
/**
* Construct a new LookupOverride.
* @param methodName the name of the method to override.
* This method must have no arguments.
* @param beanName name of the bean in the current BeanFactory
* that the overriden method should return
*/
public LookupOverride(String methodName, String beanName) {
super(methodName);
Assert.notNull(beanName, "Bean name must not be null");
this.beanName = beanName;
}
/**
* Return the name of the bean that should be returned by this method.
*/
public String getBeanName() {
return this.beanName;
}
/**
* Match method of the given name, with no parameters.
*/
public boolean matches(Method method) {
return (method.getName().equals(getMethodName()) && method.getParameterTypes().length == 0);
}
public String toString() {
return "LookupOverride for method '" + getMethodName() + "'; will return bean '" + this.beanName + "'";
}
public boolean equals(Object other) {
return (other instanceof LookupOverride && super.equals(other) &&
ObjectUtils.nullSafeEquals(this.beanName, ((LookupOverride) other).beanName));
}
public int hashCode() {
return (29 * super.hashCode() + ObjectUtils.nullSafeHashCode(this.beanName));
}
}