org.joda.beans.impl.light.LightBeanBuilder 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.light;
import java.util.NoSuchElementException;
import org.joda.beans.Bean;
import org.joda.beans.BeanBuilder;
import org.joda.beans.MetaProperty;
/**
* Implementation of {@code BeanBuilder} that builds light beans.
*
* @param the bean type
*/
class LightBeanBuilder
implements BeanBuilder {
/** The meta-bean. */
private final LightMetaBean metaBean;
/** The data. */
private final Object[] data;
//-----------------------------------------------------------------------
/**
* Constructs the builder wrapping the target bean.
*
* @param metaBean the target meta-bean, not null
*/
LightBeanBuilder(LightMetaBean metaBean, Object[] data) {
this.metaBean = metaBean;
this.data = data;
}
//-----------------------------------------------------------------------
@Override
public Object get(String propertyName) {
return get(metaBean.metaProperty(propertyName));
}
@Override
@SuppressWarnings("unchecked")
public P get(MetaProperty
metaProperty) {
return (P) data[index(metaProperty)];
}
//-----------------------------------------------------------------------
@Override
public BeanBuilder set(String propertyName, Object value) {
return set(metaBean.metaProperty(propertyName), value);
}
@Override
public BeanBuilder set(MetaProperty metaProperty, Object value) {
data[index(metaProperty)] = value;
return this;
}
@SuppressWarnings("deprecation")
private int index(MetaProperty metaProperty) {
if (metaProperty instanceof LightMetaProperty) {
int index = ((LightMetaProperty) metaProperty).getConstructorIndex();
if (index < 0) {
throw new NoSuchElementException("Derived property cannot be set: " + metaProperty.name());
}
return index;
}
if (metaProperty instanceof AbstractLightMetaProperty) {
try {
int index = ((AbstractLightMetaProperty) metaProperty).getConstructorIndex();
if (index < 0) {
throw new NoSuchElementException("Derived property cannot be set: " + metaProperty.name());
}
return index;
} catch (ClassCastException ex) {
for (MetaProperty mp : metaBean.metaPropertyIterable()) {
if (mp.equals(metaProperty)) {
return ((LightMetaProperty) mp).getConstructorIndex();
}
}
throw new NoSuchElementException("Unknown property: " + metaProperty.name());
}
}
return index(metaBean.metaProperty(metaProperty.name()));
}
//-----------------------------------------------------------------------
@Override
public B build() {
return metaBean.build(data);
}
//-----------------------------------------------------------------------
/**
* Returns a string that summarises the builder.
*
* @return a summary string, not null
*/
@Override
public String toString() {
return "BeanBuilder for " + metaBean.beanName();
}
}