// Utility methods
// Any old BeanShell methods - no need for XSLT extensions
random = new java.util.Random();
int getNextOrderId()
{
	return random.nextInt();
}

// Transformation sub-methods
// Split up the transformation, to make things look neater
// Just like you split up your Java code

// This is called to add a row to the line items table
void addLineItems()
{
	addelem <row/>
	{
		addelem <bookId> valueOf("itemId/text()") </bookId>;
		addelem <qty> valueOf("quantity/text()") </qty>;
	}
}


// This is called to add footers with instructions
// Shows the use of text() and attribute() functions
int i = 1;
void addFooter()
{
	String strIndex = String.valueOf(i);
	i = i + 1;
	addelem <Instruction index=strIndex />
	{
		addelem <Desc> attribute("type") + ":" + text() </Desc>;
	}
}

// Main Transformation starts here
// First call root to initialize the output
root(<tables/>);

// Add a table element for the order table, and one row
addelem <table name="order" />
{
	addelem <row/>
	{
		addelem <orderId> getNextOrderId() </orderId>;
		addelem <customerId> valueOf("customer/text()") </customerId>;
	}
}

// Add a table element for the line items table, and add
// a row for each line item
addelem <table name="order_line_item" />
{
	foreach("lineItems/lineItem")
	{
		addLineItems();
	}
}

// add a footer for each instruction
// this doesn't make much practical sense, but
// addFooter( ) has some features to check out
foreach ("//instruction")
{
	addelem <footer/>
	{
		addFooter();
	}
}