org.exolab.castor.xml.handlers.SQLTimeFieldHandler Maven / Gradle / Ivy

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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 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 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