Hi,
Could someone explain why when I run the test class the value of the other
date field is always null.
value of startEventDate is OK.
value of endEventDate is always NULL.
// MyOrder bean class
package sample;
public class MyOrder {
private ClientData clientData;
public ClientData getClientData() {
return clientData;
}
public void setClientData(ClientData clientData) {
this.clientData = clientData;
}
}
---------
// ClientData bean class
package sample;
public class ClientData {
private java.util.Date startEventDate;
private java.util.Date endEventDate;
public java.util.Date getStartEventDate() {
return startEventDate;
}
public void setStartEventDate(java.util.Date startEventDate) {
this.startEventDate = startEventDate;
}
public java.util.Date getEndEventDate() {
return endEventDate;
}
public void setEndEventDate(java.util.Date endEventDate) {
this.endEventDate = endEventDate;
}
}
----------------
//From the castor user guide..
package sample;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Properties;
import org.exolab.castor.mapping.ConfigurableFieldHandler;
import org.exolab.castor.mapping.GeneralizedFieldHandler;
import org.exolab.castor.mapping.ValidityException;
/**
* The FieldHandler for the Date class
*
*/
public class MyDateHandler extends GeneralizedFieldHandler implements
ConfigurableFieldHandler {
/**
* Creates a new MyDateHandler instance
*/
public MyDateHandler() {
super();
}
private SimpleDateFormat formatter;
public void setConfiguration(final Properties config) throws
ValidityException {
String pattern = config.getProperty("date-format");
if (pattern == null) {
throw new ValidityException("Required parameter \"date-format\"
is
missing for FieldHandlerImpl.");
}
try {
formatter = new SimpleDateFormat(pattern);
} catch (IllegalArgumentException e) {
throw new ValidityException("Pattern \""+pattern+"\" is not a
valid
date format.");
}
}
/**
* This method is used to convert the value when the
* getValue method is called. The getValue method will
* obtain the actual field value from given 'parent' object.
* This convert method is then invoked with the field's
* value. The value returned from this method will be
* the actual value returned by getValue method.
*
* @param value the object value to convert after
* performing a get operation
* @return the converted value.
*/
public Object convertUponGet(Object value) {
if (value == null) return null;
//SimpleDateFormat formatter = new SimpleDateFormat(FORMAT);
Date date = (Date)value;
return formatter.format(date);
}
/**
* This method is used to convert the value when the
* setValue method is called. The setValue method will
* call this method to obtain the converted value.
* The converted value will then be used as the value to
* set for the field.
*
* @param value the object value to convert before
* performing a set operation
* @return the converted value.
*/
public Object convertUponSet(Object value) {
//SimpleDateFormat formatter = new SimpleDateFormat(FORMAT);
Date date = null;
try {
date = formatter.parse((String)value);
}
catch(ParseException px) {
throw new IllegalArgumentException(px.getMessage());
}
return date;
}
/**
* Returns the class type for the field that this
* GeneralizedFieldHandler converts to and from. This
* should be the type that is used in the
* object model.
*
* @return the class type of of the field
*/
public Class getFieldType() {
return Date.class;
}
/**
* Creates a new instance of the object described by
* this field.
*
* @param parent The object for which the field is created
* @return A new instance of the field's value
* @throws IllegalStateException This field is a simple
* type and cannot be instantiated
*/
public Object newInstance(Object parent) throws IllegalStateException
{
//-- Since it's marked as a string...just return null,
//-- it's not needed.
return null;
}
}
---------------------------------
<?xml version="1.0"?>
<!DOCTYPE mapping PUBLIC "-//EXOLAB/Castor Object Mapping DTD Version
1.0//EN" "http://castor.exolab.org/mapping.dtd";>
<mapping>
<description>Description of the mapping</description>
<field-handler name="myHandler" class="sample.MyDateHandler">
</field-handler>
<class name="sample.MyOrder">
<map-to xml="myOrder"/>
<field name="clientData" type="sample.ClientData"/>
</class>
<class name="sample.ClientData">
<field name="startEventDate" type="string" handler="myHandler">
<bind-xml name="startEventDate" node="element"/>
</field>
<field name="endEventDate" type="string" handler="myHandler">
<bind-xml name="endEventDate" node="element"/>
</field>
</class>
</mapping>
---------------
sample data
<?xml version="1.0"?>
<myOrder>
<clientData>
<startEventDate>2010-08-08 16:54:41</startEventDate>
<endEventDate>2010-08-08 16:54:42</endEventDate>
</clientData>
</myOrder>
-----------------
Test class
package sample;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.Reader;
import org.exolab.castor.mapping.Mapping;
import org.exolab.castor.mapping.MappingException;
import org.exolab.castor.xml.MarshalException;
import org.exolab.castor.xml.Unmarshaller;
import org.exolab.castor.xml.ValidationException;
public class Test2 {
public Test2() {
processFile();
}
public static void main(String[] args) throws MarshalException,
ValidationException, IOException, MappingException {
new Test2();
}
public void processFile() {
try {
// -- Load a mapping file
// Load the mapping file
Mapping _mapping = new
Mapping(getClass().getClassLoader());
String MAPPING_FILE = "mapping.xml";
_mapping.loadMapping(getClass().getResource(MAPPING_FILE));
Unmarshaller un = new Unmarshaller(MyOrder.class);
un.setMapping(_mapping);
// -- Read in the Addressbook using the mapping
Reader reader = new BufferedReader(new
FileReader("test.xml"));
MyOrder root = (MyOrder) un.unmarshal(reader);
// -- Display the Event Type
System.out.println(root.getClientData().getStartEventDate());
System.out.println(root.getClientData().getEndEventDate());
} catch (Exception e) {
e.printStackTrace();
}
}
}
Can anyone help me on this..
Thanks
--
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