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 * without modification, are permitted provided that the following conditions are met:
 *
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 * must also contain a copy of this document.
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 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
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 * the distribution.
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 * 3. The name "Exolab" must not be used to endorse or promote products derived from this Software
 * without prior written permission of Intalio, Inc. For written permission, please contact
 * info@exolab.org.
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 * 4. Products derived from this Software may not be called "Exolab" nor may "Exolab" appear in
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 * 5. Due credit should be given to the Exolab Project (http://www.exolab.org/).
 *
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 * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Copyright 2004 (C) Intalio, Inc. All Rights Reserved.
 *
 * $Id$
 */
package org.exolab.castor.xml.handlers;

import java.sql.Time;
import java.util.Date;

import org.exolab.castor.mapping.GeneralizedFieldHandler;

/**
 * An implementation of GeneralizedFieldHandler for java.sql.Time.
 *
 * @author <a href="kvisco@intalio.com">Keith Visco</a>
 * @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 SQLTimeFieldHandler extends GeneralizedFieldHandler {

  /**
   * Creates a new SQLTimeFieldHandler.
   */
  public SQLTimeFieldHandler() {
    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;
    }

    String str = value.toString();

    Time time = null;
    // if ':' exists at index 2, then we probably have a valid time format: HH:MM:SS
    if (str.indexOf(':') == 2) {
      time = Time.valueOf(str);
    } else {
      // -- Try a full date YYYY-MM-DDTHH:MM:SS
      try {
        Date date = DateFieldHandler.parse(str);
        time = new Time(date.getTime());
      } catch (java.text.ParseException px) {
        throw new IllegalStateException(px.getMessage());
      }
    }
    return time;
  } // -- 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.Time.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.Time(0);
  }

} // -- SQLTimeFieldHandler
