org.joda.beans.impl.direct.MinimalMetaProperty 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.direct;
import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Type;
import java.util.Arrays;
import java.util.List;
import java.util.function.BiConsumer;
import java.util.function.Function;
import org.joda.beans.Bean;
import org.joda.beans.ImmutableBean;
import org.joda.beans.MetaBean;
import org.joda.beans.PropertyStyle;
import org.joda.beans.impl.BasicMetaProperty;
/**
* An immutable meta-property based on a functional interface.
*
* @param the type of the property content
*/
final class MinimalMetaProperty
extends BasicMetaProperty
{
/** The meta-bean. */
private final MetaBean metaBean;
/** The type of the property. */
private final Class
propertyType;
/** The type of the property. */
private final Type propertyGenericType;
/** The annotations. */
private final List annotations;
/** The read method. */
private final Function getter;
/** The write method. */
private final BiConsumer setter;
/** The property style. */
private final PropertyStyle style;
//-----------------------------------------------------------------------
/**
* Creates an instance from a {@code Field}.
*
* @param metaBean the meta bean, not null
* @param propertyName the property name, not empty
* @param field the field, not null
* @param getter the property getter, not null
* @param setter the property setter, null if read only
*/
@SuppressWarnings("unchecked")
MinimalMetaProperty(
MetaBean metaBean,
String propertyName,
Field field,
Function getter,
BiConsumer setter) {
super(propertyName);
this.metaBean = metaBean;
this.propertyType = (Class) field.getType();
this.propertyGenericType = field.getGenericType();
this.annotations = Arrays.asList(field.getAnnotations());
this.getter = (Function) getter;
this.setter = (BiConsumer) setter;
if (ImmutableBean.class.isAssignableFrom(metaBean.beanType())) {
this.style = PropertyStyle.IMMUTABLE;
} else {
this.style = setter != null ? PropertyStyle.READ_WRITE : PropertyStyle.READ_ONLY;
}
}
/**
* Creates an instance from a derived {@code Method}.
*
* @param metaBean the meta bean, not null
* @param method the method, not null
* @param propertyName the property name, not empty
*/
@SuppressWarnings("unchecked")
MinimalMetaProperty(
MetaBean metaBean,
Method method,
String propertyName) {
super(propertyName);
this.metaBean = metaBean;
this.propertyType = (Class) method.getReturnType();
this.propertyGenericType = method.getGenericReturnType();
this.annotations = Arrays.asList(method.getAnnotations());
this.getter = b -> {
try {
return method.invoke(b);
} catch (RuntimeException ex) {
throw ex;
} catch (Exception ex) {
throw new RuntimeException(ex);
}
};
this.setter = null;
this.style = PropertyStyle.DERIVED;
}
//-----------------------------------------------------------------------
@Override
public MetaBean metaBean() {
return metaBean;
}
@Override
public Class declaringType() {
return metaBean.beanType();
}
@Override
public Class
propertyType() {
return propertyType;
}
@Override
public Type propertyGenericType() {
return propertyGenericType;
}
@Override
public PropertyStyle style() {
return style;
}
@Override
public List annotations() {
return annotations;
}
//-----------------------------------------------------------------------
@Override
@SuppressWarnings("unchecked")
public P get(Bean bean) {
try {
return (P) getter.apply(bean);
} catch (RuntimeException | Error ex) {
throw ex;
} catch (Throwable ex) {
throw new RuntimeException(ex);
}
}
@Override
public void set(Bean bean, Object value) {
if (setter == null) {
throw new UnsupportedOperationException("Property cannot be written: " + name());
}
try {
setter.accept(bean, value);
} catch (RuntimeException | Error ex) {
throw ex;
} catch (Throwable ex) {
throw new RuntimeException(ex);
}
}
}