org.apache.cayenne.reflect.FieldEmbeddableDescriptor Maven / Gradle / Ivy
/*****************************************************************
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.cayenne.reflect;
import org.apache.cayenne.Persistent;
import org.apache.cayenne.map.Embeddable;
/**
* A default POJO embeddable descriptor.
*
* @since 3.0
*/
public class FieldEmbeddableDescriptor implements EmbeddableDescriptor {
protected Class embeddableClass;
protected Embeddable embeddable;
protected Accessor ownerAccessor;
protected Accessor embeddedPropertyAccessor;
public FieldEmbeddableDescriptor(Embeddable embeddable, String ownerProperty,
String embeddedPropertyProperty) {
this.embeddable = embeddable;
try {
this.embeddableClass = Class.forName(embeddable.getClassName(), true, Thread
.currentThread()
.getContextClassLoader());
}
catch (ClassNotFoundException e) {
throw new PropertyException("Class not found", e);
}
this.ownerAccessor = new FieldAccessor(
embeddableClass,
ownerProperty,
Persistent.class);
this.embeddedPropertyAccessor = new FieldAccessor(
embeddableClass,
embeddedPropertyProperty,
String.class);
}
public Object createObject(Object owner, String embeddedProperty) {
Object embeddable;
try {
embeddable = embeddableClass.newInstance();
}
catch (Throwable e) {
throw new PropertyException("Error creating embeddable object of class '"
+ embeddableClass.getName()
+ "'", e);
}
ownerAccessor.setValue(embeddable, owner);
embeddedPropertyAccessor.setValue(embeddable, embeddedProperty);
return embeddable;
}
public Embeddable getEmbeddable() {
return embeddable;
}
public Class getObjectClass() {
return embeddableClass;
}
}