/*
* Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.yangtools.yang.model.api;
/**
*
* YANG statement <code>typedef</code> contains also substatements
* <ul>
* <li><code>default</code> - default value which is compatible with
* <code>type</code>,</li>
* <li><code>type</code> - base type from which is <code>typedef</code> derived,
* </li>
* <li><code>units</code> - textual information about units associated with this
* type.</li>
* </ul>
* This interface contains the methods for getting the values of the arguments
* of substatements mentioned above.
*
* @param <T>
* type of the base type (YANG <code>type</code> substatement) which
* is included in the instance of this type
*/
public interface TypeDefinition<T extends TypeDefinition<?>> extends SchemaNode {
/**
* Returns the base type from which this type is derived. If this is yang
* built-in type, returns null.
*
* @return value of <code><T></code> type which represents the base
* type of instance of the <code>TypeDefinition</code> type or null,
* if this is yang built-in type
*/
T getBaseType();
/**
* Returns the unit which represents the value of the argument of the
* <code>units</code> substatement of the YANG <code>typedef</code>
* statement.
*
* @return string with units in which is type measured
*/
String getUnits();
/**
* Returns the default value which represents the value of the argument of
* the <code>default</code> substatement of the YANG <code>typedef</code>
* statement.
*
* @return instance of <code>Object</code> type which contains default value
* for <code>typedef</code>
*/
Object getDefaultValue();
}