GYearMonthDescriptor

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package org.exolab.castor.types;

import org.exolab.castor.mapping.FieldDescriptor;
import org.exolab.castor.mapping.ValidityException;
import org.exolab.castor.xml.NodeType;
import org.exolab.castor.xml.XMLFieldDescriptor;
import org.exolab.castor.xml.XMLFieldHandler;
import org.exolab.castor.xml.util.XMLFieldDescriptorImpl;

/**
 * The GYearMonth Descriptor.
 *
 * @author <a href="mailto:blandin@intalio.com">Arnaud Blandin</a>
 * @version $Revision$ $Date: 2005-03-05 06:42:06 -0700 (Sat, 05 Mar 2005) $
 */
public class GYearMonthDescriptor extends BaseDescriptor {

  /** The name of the XML element. */
  private static final String XML_NAME = "gYearMonth";
  /** Our field descriptor. */
  private static final XMLFieldDescriptorImpl CONTENT_DESCRIPTOR;
  /** Our field descriptor array. Lists the fields we describe. */
  private static final FieldDescriptor[] FIELDS;

  static {
    CONTENT_DESCRIPTOR =
        new XMLFieldDescriptorImpl(String.class, "content", "content", NodeType.Text);
    CONTENT_DESCRIPTOR.setHandler(new GYearMonthDescriptor().new GYearMonthFieldHandler());
    FIELDS = new FieldDescriptor[1];
    FIELDS[0] = CONTENT_DESCRIPTOR;
  }

  // ----------------/
  // - Constructors -/
  // ----------------/

  public GYearMonthDescriptor() {
    super(XML_NAME, GYearMonth.class);
  } // -- GYearMonthDescriptor

  // ------------------/
  // - Public Methods -/
  // ------------------/

  /**
   * Returns the XMLFieldDescriptor for the member that should be marshalled as text content.
   *
   * @return the XMLFieldDescriptor for the member that should be marshalled as text content.
   */
  public XMLFieldDescriptor getContentDescriptor() {
    return CONTENT_DESCRIPTOR;
  } // getContentDescriptor

  /**
   * Returns a list of fields represented by this descriptor.
   *
   * @return A list of fields
   */
  public FieldDescriptor[] getFields() {
    return FIELDS;
  } // -- getFields

  /**
   * A specialized FieldHandler for the XML Schema TimeDuration related types
   *
   * @author <a href="blandin@intalio.com">Arnaud Blandin</a>
   * @version $Revision $ $Date $
   */
  class GYearMonthFieldHandler extends XMLFieldHandler {

    // ----------------/
    // - Constructors -/
    // ----------------/

    /**
     * Creates a new TimeFieldHandler
     */
    public GYearMonthFieldHandler() {
      super();
    } // -- GYearMonthFieldHandler

    // ------------------/
    // - Public Methods -/
    // ------------------/

    /**
     * Returns the value of the field associated with this descriptor from the given target object.
     *
     * @param target the object to get the value from
     * @return the value of the field associated with this descriptor from the given target object.
     */
    public Object getValue(Object target) throws java.lang.IllegalStateException {
      Object result = null;
      if (target instanceof GYearMonth) {
        result = (GYearMonth) target;
      }
      return result;
    } // -- getValue

    /**
     * Sets the value of the field associated with this descriptor.
     *
     * @param target the object in which to set the value
     * @param value the value of the field
     */
    public void setValue(Object target, Object value) throws java.lang.IllegalStateException {
      if (!(target instanceof GYearMonth)) {
        String err = "GYearMonthDescriptor#setValue: expected GYearMonth, received instead: "
            + target.getClass();
        throw new IllegalStateException(err);
      }

      GYearMonth GYearMonthTarget = (GYearMonth) target;

      if (value == null) {
        String err = "GYearMonthDescriptor#setValue: null value";
        throw new IllegalStateException(err);
      }

      try {
        GYearMonth temp = GYearMonth.parseGYearMonth(value.toString());
        GYearMonthTarget.setCentury(temp.getCentury());
        GYearMonthTarget.setYear(temp.getYear());
        GYearMonthTarget.setMonth(temp.getMonth());
        if (temp.isUTC()) {
          GYearMonthTarget.setUTC();
          GYearMonthTarget.setZone(temp.getZoneHour(), temp.getZoneMinute());
          GYearMonthTarget.setZoneNegative(temp.isZoneNegative());
        }
        temp = null;
      } catch (java.text.ParseException ex) {
        String err = "GYearMonthDescriptor#setValue: wrong value\n" + ex.getMessage();
        throw new IllegalStateException(err);
      }
    } // -- setValue

    public void resetValue(Object target) throws java.lang.IllegalStateException {
      // Nothing to do?
    }

    /**
     * Checks the field validity. Returns successfully if the field can be stored, is valid, etc,
     * throws an exception otherwise.
     *
     * @param object The object
     * @throws ValidityException The field is invalid, is required and null, or any other validity
     *         violation
     * @throws IllegalStateException The Java object has changed and is no longer supported by this
     *         handler, or the handler is not compatiable with the Java object
     */
    public void checkValidity(Object object) throws ValidityException, IllegalStateException {
      // nothing to do?
    } // -- checkValidity

    /**
     * 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 {
      return new GYearMonth();
    } // -- newInstance

  } // -- GYearMonthFieldHandler

} // -- GYearMonthDescriptor