openbook.domain

Class LineItem

java.lang.Object

openbook.domain.LineItem

All Implemented Interfaces:

Serializable

@Entity
public class LineItem
extends Object
implements Serializable

An immutable persistent entity with complex primary key. The primary key is combination of the primary identity of PurchaseOrder and an 1-based integer index.

Author:

Pinaki Poddar

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	LineItem.LineItemId Separate identity class.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	LineItem()

Method Summary

Methods

Modifier and Type	Method and Description
Book	getBook() Gets the Book for this line item.
int	getIndex() Gets the 1-based index this line item in its parent PurchaseOrder.
PurchaseOrder	getOrder() Gets the parent PurchaseOrder of this line item.
int	getQuantity() Gets the quantity of the book for this line item.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LineItem

protected LineItem()

Method Detail

getBook

public Book getBook()

Gets the Book for this line item.

Returns:

non-null Book.

getQuantity

public int getQuantity()

Gets the quantity of the book for this line item.

Returns:

a positive number.

getOrder

public PurchaseOrder getOrder()

Gets the parent PurchaseOrder of this line item.

Returns:

non-null PurchaseOrder.

getIndex

public int getIndex()

Gets the 1-based index this line item in its parent PurchaseOrder.

Returns:

index must be greater than zero.