org.exolab.castor.mapping.loader.ExtendedFieldHandler Maven / Gradle / Ivy

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 * $Id$
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package org.exolab.castor.mapping.loader;

import org.exolab.castor.mapping.FieldDescriptor;
import org.exolab.castor.mapping.FieldHandler;

/**
 * An extended version of the FieldHandler interface which is used for adding additional
 * functionality while preserving backward compatability.
 * 
 * @author Keith Visco
 * @version $Revision$ $Date: 2003-03-03 00:05:44 -0700 (Mon, 03 Mar 2003) $
 * @see FieldDescriptor
 * @see FieldHandler
 */
public abstract class ExtendedFieldHandler implements FieldHandler {

  // /**
  // * Returns the FieldDescriptor for the field that this handler is responsible
  // * for, or null if no FieldDescriptor has been set. This method is useful for
  // * implementations of the FieldHandler interface that wish to obtain
  // * information about the field in order to make the FieldHandler more generic
  // * and reusable, or simply for validation purposes.
  // *
  // * @return the FieldDescriptor, or null if none exists.
  // */
  // protected abstract FieldDescriptor getFieldDescriptor();
  //
  // /**
  // * Sets the FieldDescriptor that this FieldHander is responsible for. By
  // * setting the FieldDescriptor, it allows the implementation of the
  // * FieldHandler methods to obtain information about the field itself. This
  // * allows a particular implementation to become more generic and reusable.
  // *
  // * @param fieldDesc
  // * the FieldDescriptor to set
  // */
  // protected abstract void setFieldDescriptor(FieldDescriptor fieldDesc);

  // /**
  // * @deprecated No longer supported
  // */
  // public final void checkValidity(Object object) throws ValidityException, IllegalStateException
  // {
  // // -- do nothing...deprecated method
  // } // -- checkValidity
  //
  // /**
  // * Returns the value of the field from the object.
  // *
  // * @param object
  // * The object
  // * @return The value of the field
  // * @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 abstract Object getValue(Object object) throws IllegalStateException;
  //
  // /**
  // * 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 abstract Object newInstance(Object parent) throws IllegalStateException;
  //
  // /**
  // * Sets the value of the field to a default value.
  // * 
  // * Reference fields are set to null, primitive fields are set to their
  // * default value, collection fields are emptied of all elements.
  // *
  // * @param object
  // * The object
  // * @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 abstract void resetValue(Object object) throws IllegalStateException,
  // IllegalArgumentException;
  //
  // /**
  // * Sets the value of the field on the object.
  // *
  // * @param object
  // * The object
  // * @param value
  // * The new value
  // * @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
  // * @throws IllegalArgumentException
  // * The value passed is not of a supported type
  // */
  // public abstract void setValue(Object object, Object value) throws IllegalStateException,
  // IllegalArgumentException;

}