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package org.apache.taglibs.standard.examples.taglib;
import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
import javax.servlet.jsp.jstl.core.*;
import org.apache.taglibs.standard.examples.beans.Customer;
import org.apache.taglibs.standard.lang.support.ExpressionEvaluatorManager;
import org.apache.taglibs.standard.examples.util.*;
/**
* <p>Tag handler for <usCustomer>
*
* @author Pierre Delisle
* @version $Revision: 1.2 $ $Date: 2002/02/04 02:39:49 $
*/
public class UsCustomerTag extends ConditionalTagSupport {
//*********************************************************************
// Instance Variables
/** Holds value of property customer. */
private String customer;
//*********************************************************************
// Constructor and lusCustomerecycle management
public UsCustomerTag() {
super();
init();
}
private void init() {
customer = null;
}
//*********************************************************************
// TagSupport methods
public void release() {
super.release();
init();
}
//*********************************************************************
// ConditionalTagSupport methods
protected boolean condition() throws JspTagException {
try {
Customer customerObj = (Customer)eval("customer", customer, Customer.class);
if (customerObj == null) {
throw new NullAttributeException("usCustomer", "test");
} else {
System.out.println("country: " + customerObj.getAddress().getCountry());
return (customerObj.getAddress().getCountry().equalsIgnoreCase("USA"));
}
} catch (JspException ex) {
throw new JspTagException(ex.toString());
}
}
//*********************************************************************
// Accessors
/**
* Getter for property customer.
* @return Value of property customer.
*/
public String getCustomer() {
return customer;
}
/**
* Setter for property customer.
* @param customer New value of property customer.
*/
public void setCustomer(String customer) {
this.customer = customer;
}
//*********************************************************************
// Utility methods
/**
* Evaluate elexprvalue
*/
private Object eval(String attName, String attValue, Class clazz)
throws JspException {
Object obj = ExpressionEvaluatorManager.evaluate(
attName, attValue, clazz, this, pageContext);
if (obj == null) {
throw new NullAttributeException(attName, attValue);
} else {
return obj;
}
}
}