Brainstorm/Foundation Test/src/com/foundation/model/test/DbPart.java

package com.foundation.model.test;

import java.math.BigDecimal;

import com.foundation.common.AttributeBinding;
import com.foundation.event.model.ModelListener;
import com.foundation.metadata.Attribute;

/**
 * Copyright Wynne Crisman 1999,2006<p>
 */
public class DbPart extends AbstractModel {
	public static final Attribute ID = registerAttribute(DbPart.class, "id");
	public static final Attribute NAME = registerAttribute(DbPart.class, "name");
	public static final Attribute PRODUCT = registerAttribute(DbPart.class, "product", DbProduct.class);
	public static final Attribute COST = registerAttribute(DbPart.class, "cost", AO_LAZY);
	public static final Attribute PRICE = registerAttribute(DbPart.class, "price", AO_CALCULATED);
/**
 * DbPart constructor.
 */
public DbPart() {
	super();
}//DbPart()//
/**
 * DbPart constructor.
 */
public DbPart(String name, BigDecimal cost) {
	super();
	setName(name);
	setAttributeValue(PRICE, new BigDecimal(0));
	setCost(cost);
}//DbPart()//
/* (non-Javadoc)
 * @see com.foundation.common.Entity#lazyLoadAttribute(com.foundation.metadata.Attribute)
 */
protected Object lazyLoadAttribute(Attribute attribute) {
	Object result;
	
	if(attribute == COST) {
		result = new BigDecimal(1.50);
	}//if//
	else {
		result = super.lazyLoadAttribute(attribute);
	}//else//
	
	return result;
}//lazyLoadAttribute()//
/* (non-Javadoc)
 * @see com.foundation.common.Entity#calculatedAttributeRegister(com.foundation.metadata.Attribute, com.foundation.common.Entity.ICalculatedAttributeListener)
 */
protected ModelListener calculatedAttributeRegister(Attribute attribute, ICalculatedAttributeListener listener) {
	if(attribute == PRICE) {
		ModelListener priceListener = new ModelListener(this);
		priceListener.addBinding(new AttributeBinding(DbPart.class, COST, 0, listener, null));
		priceListener.addBinding(new AttributeBinding(DbPart.class, PRODUCT));
		priceListener.addBinding(new AttributeBinding(DbProduct.class, DbProduct.MARKUP, 0, listener, null));
		priceListener.initialize();
		return priceListener;
	}//if//
	else {
		return super.calculatedAttributeRegister(attribute, listener);
	}//else//
}//calculatedAttributeRegister()//
/* (non-Javadoc)
 * @see com.foundation.common.Entity#calculatedAttributeUpdate(com.foundation.metadata.Attribute)
 */
protected Object calculatedAttributeUpdate(Attribute attribute) {
	Object result;
	
	if(attribute == PRICE) {
		result = calculatePrice();
	}//if//
	else {
		result = super.calculatedAttributeUpdate(attribute);
	}//else//
	
	return result;
}//calculatedAttributeUpdate()//
/**
 * Gets the id for the part.
 * @return
 */
public Integer getId() {
	return (Integer) getAttributeValue(ID);
}//getId()//
/**
 * Gets the name for the part.
 * @return
 */
public String getName() {
	return (String) getAttributeValue(NAME);
}//getName()//
/**
 * Sets the name for the part.
 * @param name 
 */
public void setName(String name) {
	setAttributeValue(NAME, name);
}//setName()//
/**
 * Gets the cost for the part.
 * @return
 */
public BigDecimal getCost() {
	return (BigDecimal) getAttributeValue(COST);
}//getCost()//
/**
 * Sets the cost for the part.
 * @param cost 
 */
public void setCost(BigDecimal cost) {
	if(cost == null) {
		cost = new BigDecimal(0.00);
	}//if//
	
	setAttributeValue(COST, cost);
}//setCost()//
/**
 * Gets the part's containing product.
 * @return
 */
public DbProduct getProduct() {
	return (DbProduct) getAttributeValue(PRODUCT);
}//getProduct()//
/**
 * Calculates the price for the item based on the product's markup.
 * @return
 */
private BigDecimal calculatePrice() {
	BigDecimal result = getCost();
	
	if(getProduct() != null) {
		result = result.multiply(getProduct().getMarkup());
	}//if//
	
	result.setScale(2, BigDecimal.ROUND_HALF_UP);
	
	return result;
}//calculatePrice()//
/**
 * Gets the price for the part which is a function of the product's markup and the cost of this item.
 * @return
 */
public BigDecimal getPrice() {
	return (BigDecimal) getAttributeValue(PRICE);
}//getPrice()//
}//Part//