/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jena.enhanced;
import org.apache.jena.shared.JenaException ;
/**
Exception to throw if an enhanced graph does not support polymorphism
to a specific class. The exception records the "bad" class and node for
later reporting.
*/
public class UnsupportedPolymorphismException extends JenaException
{
private final Class<?> type;
private final Object node;
/**
Initialise this exception with the node that couldn't be polymorphed and
the class it couldn't be polymorphed to.
*/
public UnsupportedPolymorphismException( Object node, boolean hasModel, Class<?> type )
{
super( constructMessage( node, hasModel, type ) );
this.node = node;
this.type = type;
}
private static String constructMessage( Object node, boolean hasModel, Class<?> type )
{
String mainMessage = "cannot convert " + node + " to " + type;
return hasModel ? mainMessage : mainMessage + " -- it has no model";
}
/**
Answer the class that the node couldn't be polymorphed to
*/
public Class<?> getBadClass()
{ return type; }
/**
Answer the node that couldn't be polymorphed.
*/
public Object getBadNode()
{ return node; }
}