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MethodInfo.java
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MethodInfo.java
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/*
* Copyright (c) 1997, 2021 Oracle and/or its affiliates and others.
* All rights reserved.
* Copyright 2004 The Apache Software Foundation
*
* 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 jakarta.el;
import java.util.Arrays;
/**
* Holds information about a method that a {@link MethodExpression} evaluated to.
*
* Two MethodInfo instances are considered to be equal if they reference methods
* with the same name, return types and parameter types.
*
* @since Jakarta Server Pages 2.1
*/
public class MethodInfo {
private String name;
private Class<?> returnType;
private Class<?>[] paramTypes;
/**
* Creates a new instance of <code>MethodInfo</code> with the given information.
*
* @param name The name of the method
* @param returnType The return type of the method
* @param paramTypes The types of each of the method's parameters
*/
public MethodInfo(String name, Class<?> returnType, Class<?>[] paramTypes) {
this.name = name;
this.returnType = returnType;
this.paramTypes = paramTypes;
}
/**
* Returns the name of the method
*
* @return the name of the method
*/
public String getName() {
return name;
}
/**
* Returns the return type of the method
*
* @return the return type of the method
*/
public Class<?> getReturnType() {
return returnType;
}
/**
* Returns the parameter types of the method
*
* @return the parameter types of the method
*/
public Class<?>[] getParamTypes() {
return paramTypes;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((name == null) ? 0 : name.hashCode());
result = prime * result + Arrays.hashCode(paramTypes);
result = prime * result + ((returnType == null) ? 0 : returnType.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
MethodInfo other = (MethodInfo) obj;
if (name == null) {
if (other.name != null) {
return false;
}
} else if (!name.equals(other.name)) {
return false;
}
if (!Arrays.equals(paramTypes, other.paramTypes)) {
return false;
}
if (returnType == null) {
if (other.returnType != null) {
return false;
}
} else if (!returnType.equals(other.returnType)) {
return false;
}
return true;
}
}