/*
 * 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.openjpa.sdo.mapping;

import java.lang.reflect.Method;

import org.apache.openjpa.enhance.Reflection;
import org.apache.openjpa.jdbc.meta.FieldMapping;

import commonj.sdo.Property;

/**
 * Abstract base class for mapping SDO Property to Java Field.
 * 
 * @author Pinaki Poddar
 * @since 0.2.0
 */
public abstract class AbstractPropertyMapping implements PropertyMapping {
	protected final TypeMapping owner;
	protected final Property property;
	protected final FieldMapping fm;
	protected Method getter;
	protected Method setter;
	protected static final Object[] NULL_ARGS = new Object[]{};
	
	protected AbstractPropertyMapping(TypeMapping owner, 
			Property property, FieldMapping fm) {
		this.owner = owner;
		this.property = property;
		this.fm = fm;
		if (fm != null) { // runtime
			resolve(fm);
		}
	}

	public final Property getProperty() {
		return property;
	}
	
	public String getFieldName() {
		return property.getName();
	}
	
	public void resolve(FieldMapping fm) {
		if (getter != null) return;
		Class cls = fm.getDeclaringType();
		getter = Reflection.findGetter(cls, fm.getName(), true);
		setter = Reflection.findSetter(cls, fm.getName(), true);
	}
}