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/*
 * Copyright (c) 2015-2019 "Neo Technology,"
 * Network Engine for Objects in Lund AB [http://neotechnology.com]
 *
 * Licensed 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.
 *
 * Attribution Notice under the terms of the Apache License 2.0
 *
 * This work was created by the collective efforts of the openCypher community.
 * Without limiting the terms of Section 6, any Derivative Work that is not
 * approved by the public consensus process of the openCypher Implementers Group
 * should not be described as “Cypher” (and Cypher® is a registered trademark of
 * Neo4j Inc.) or as "openCypher". Extensions by implementers or prototypes or
 * proposals for change that have been documented or implemented should only be
 * described as "implementation extensions to Cypher" or as "proposed changes to
 * Cypher that are not yet approved by the openCypher community".
 */
package org.opencypher.tools.xml;

import java.lang.annotation.Annotation;
import java.lang.reflect.AccessibleObject;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.function.BiFunction;
import java.util.function.Function;

final class HierarchicalClassValue extends ClassValue>
{
    private final Function, M[]> accessor;
    private final Class annotation;
    private final BiFunction> factory;

    HierarchicalClassValue( Function, M[]> accessor, Class annotation,
                            BiFunction> factory )
    {
        this.accessor = accessor;
        this.annotation = annotation;
        this.factory = factory;
    }

    @Override
    protected final List computeValue( Class type )
    {
        Class parent = type.getSuperclass();
        List result = new ArrayList<>();
        if ( parent != Object.class )
        {
            result.addAll( get( parent ) );
        }
        for ( M member : accessor.apply( type ) )
        {
            A annotation = member.getAnnotation( this.annotation );
            if ( annotation != null )
            {
                result.addAll( factory.apply( member, annotation ) );
            }
        }
        return result;
    }
}