org.joda.beans.impl.StandaloneMetaProperty Maven / Gradle / Ivy
/*
* Copyright 2001-present Stephen Colebourne
*
* 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.joda.beans.impl;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Collections;
import java.util.List;
import org.joda.beans.Bean;
import org.joda.beans.MetaBean;
import org.joda.beans.PropertyStyle;
/**
* A meta-property that exists separate from a bean.
*
* One use case for this is to handle renamed properties in {@code SerDeserializer}.
*
* @param
the type of the property content
* @author Stephen Colebourne
*/
public final class StandaloneMetaProperty
extends BasicMetaProperty
{
/**
* The meta-bean, which does not have to refer to this property.
*/
private final MetaBean metaBean;
/**
* The type of the property.
*/
private final Class
clazz;
/**
* The type of the property.
*/
private final Type type;
//-----------------------------------------------------------------------
/**
* Creates a non-generified property.
*
* @param the property type
* @param propertyName the property name, not empty
* @param metaBean the meta-bean, which does not have to refer to this property, not null
* @param clazz the type of the property, not null
* @return the meta-property, not null
*/
public static StandaloneMetaProperty of(String propertyName, MetaBean metaBean, Class clazz) {
return new StandaloneMetaProperty<>(propertyName, metaBean, clazz, clazz);
}
/**
* Creates a property.
*
* @param the property type
* @param propertyName the property name, not empty
* @param metaBean the meta-bean, which does not have to refer to this property, not null
* @param clazz the type of the property, not null
* @param type the type of the property, not null
* @return the meta-property, not null
*/
public static StandaloneMetaProperty of(String propertyName, MetaBean metaBean, Class clazz, Type type) {
return new StandaloneMetaProperty<>(propertyName, metaBean, clazz, type);
}
//-----------------------------------------------------------------------
/**
* Creates an instance.
*
* @param propertyName the property name, not empty
* @param metaBean the meta-bean, which does not have to refer to this property, not null
* @param clazz the type of the property, not null
* @param type the type of the property, not null
*/
private StandaloneMetaProperty(String propertyName, MetaBean metaBean, Class clazz, Type type) {
super(propertyName);
if (metaBean == null) {
throw new NullPointerException("MetaBean must not be null");
}
if (clazz == null) {
throw new NullPointerException("Class must not be null");
}
if (type == null) {
throw new NullPointerException("Type must not be null");
}
this.metaBean = metaBean;
this.clazz = clazz;
this.type = type;
}
//-----------------------------------------------------------------------
@Override
public MetaBean metaBean() {
return metaBean;
}
@Override
public Class declaringType() {
return metaBean().beanType();
}
@Override
public Class
propertyType() {
return clazz;
}
@Override
public Type propertyGenericType() {
return type;
}
@Override
public PropertyStyle style() {
return PropertyStyle.READ_WRITE;
}
//-----------------------------------------------------------------------
@Override
public List annotations() {
return Collections.emptyList();
}
//-----------------------------------------------------------------------
@Override
public P get(Bean bean) {
return clazz.cast(metaBean().metaProperty(name()).get(bean));
}
@Override
public void set(Bean bean, Object value) {
metaBean().metaProperty(name()).set(bean, value);
}
}