/*
* 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.assembler.exceptions;
import org.apache.jena.assembler.Assembler ;
import org.apache.jena.rdf.model.Resource ;
/**
Exception used to report a failure of a group assembler to construct an
object because there is no component assembler associated with the
object's most specific type.
*/
public class CannotConstructException extends AssemblerException
{
protected final Resource type;
protected final Class<?> assemblerClass;
public CannotConstructException( Class<?> assemblerClass, Resource root, Resource type )
{
super( root, constructMessage( assemblerClass, root, type ) );
this.type = type;
this.assemblerClass = assemblerClass;
}
private static String constructMessage( Class<?>assemblerClass, Resource root, Resource type )
{
return
"the assembler " + getClassName( assemblerClass )
+ " cannot construct the object named " + nice( root )
+ " because it is not of rdf:type " + nice( type )
;
}
private static final String rootPrefix = getPackagePrefix( Assembler.class.getName() );
private static String getClassName( Class<?> c )
{
String name = c.getName();
return getPackagePrefix( name ).equals( rootPrefix ) ? getLeafName( name ) : name;
}
private static String getLeafName( String name )
{ return name.substring( name.lastIndexOf( '.' ) + 1 ); }
private static String getPackagePrefix( String name )
{ return name.substring( 0, name.lastIndexOf( '.' ) ); }
/**
Answer the Assembler that cannot do the construction.
*/
public Class<?> getAssemblerClass()
{ return assemblerClass; }
/**
Answer the (alleged most-specific) type of the object that could not be
constructed.
*/
public Resource getType()
{ return type; }
}