org.exolab.castor.xml.handlers.SQLTimestampFieldHandler Maven / Gradle / Ivy
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package org.exolab.castor.xml.handlers;
import java.sql.Timestamp;
import java.util.Date;
import org.exolab.castor.mapping.GeneralizedFieldHandler;
/**
* An implementation of GeneralizedFieldHandler for java.sql.Timestamp.
*
* @author Keith Visco
* @version $Revision$ $Date: 2006-04-14 04:14:43 -0600 (Fri, 14 Apr 2006) $
* @see org.exolab.castor.mapping.FieldDescriptor
* @see org.exolab.castor.mapping.FieldHandler
*/
public class SQLTimestampFieldHandler extends GeneralizedFieldHandler {
/** Position of the literal 'T' character in an xsd:dateTime. */
private static final int OFFSET_OF_LITERAL_T = 10;
/**
* Creates a new SQLTimestampFieldHandler.
*/
public SQLTimestampFieldHandler() {
super();
}
/**
* 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(final Object value) {
// -- no conversion necessary for marshaling
return value;
} // -- convertUponGet
/**
* 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(final Object value) {
if (value == null) {
return null;
}
Timestamp timestamp = null;
// XML Schema compatibility: If 'T' exists at the correct spot,
// then we most likely have an XML Schema dateTime format.
String str = value.toString();
if (str.indexOf('T') == OFFSET_OF_LITERAL_T) {
try {
Date date = DateFieldHandler.parse(str);
timestamp = new Timestamp(date.getTime());
} catch (java.text.ParseException px) {
throw new IllegalStateException(px.getMessage());
}
} else {
timestamp = Timestamp.valueOf(str);
}
return timestamp;
} // -- convertUponSet;
/**
* 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 java.sql.Timestamp.class;
} // -- getFieldType
/**
* 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(final Object parent) throws IllegalStateException {
return new java.sql.Timestamp(0);
}
} // -- SQLTimestampFieldHandler