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/**
* Copyright (c) 2008, http://www.snakeyaml.org
*
* 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.yaml.snakeyaml.introspector;
import java.lang.annotation.Annotation;
import java.util.List;
/**
* <p>
* A <code>Property</code> represents a single member variable of a class,
* possibly including its accessor methods (getX, setX). The name stored in this
* class is the actual name of the property as given for the class, not an
* alias.
* </p>
*
* <p>
* Objects of this class have a total ordering which defaults to ordering based
* on the name of the property.
* </p>
*/
public abstract class Property implements Comparable<Property> {
private final String name;
private final Class<?> type;
public Property(String name, Class<?> type) {
this.name = name;
this.type = type;
}
public Class<?> getType() {
return type;
}
abstract public Class<?>[] getActualTypeArguments();
public String getName() {
return name;
}
@Override
public String toString() {
return getName() + " of " + getType();
}
public int compareTo(Property o) {
return getName().compareTo(o.getName());
}
public boolean isWritable() {
return true;
}
public boolean isReadable() {
return true;
}
abstract public void set(Object object, Object value) throws Exception;
abstract public Object get(Object object);
/**
* Returns the annotations that are present on this property or empty {@code List} if there're no annotations.
*
* @return the annotations that are present on this property or empty {@code List} if there're no annotations
*/
abstract public List<Annotation> getAnnotations();
/**
* Returns property's annotation for the given type or {@code null} if it's not present.
*
* @param annotationType the type of the annotation to be returned
* @param <A> class of the annotation
*
* @return property's annotation for the given type or {@code null} if it's not present
*/
abstract public <A extends Annotation> A getAnnotation(Class<A> annotationType);
@Override
public int hashCode() {
return getName().hashCode() + getType().hashCode();
}
@Override
public boolean equals(Object other) {
if (other instanceof Property) {
Property p = (Property) other;
return getName().equals(p.getName()) && getType().equals(p.getType());
}
return false;
}
}
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