/*******************************************************************************
 * Copyright (c) 2007, 2013 Association for Decentralized Information Management
 * in Industry THTH ry.
 * 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
 *
 * Contributors:
 *     VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.objmap.graph.annotations.factories;

import java.lang.annotation.Annotation;
import java.lang.reflect.Field;

import org.simantics.db.ReadGraph;
import org.simantics.db.Resource;
import org.simantics.db.exception.ResourceNotFoundException;
import org.simantics.db.exception.ServiceException;
import org.simantics.db.exception.ValidationException;
import org.simantics.objmap.bidirectional.IBidirectionalMappingRule;
import org.simantics.objmap.graph.annotations.RelatedElement;
import org.simantics.objmap.graph.rules.MappedElementRule;
import org.simantics.objmap.graph.rules.domain.RelatedObjectAccessor;
import org.simantics.objmap.graph.rules.factory.IFieldRuleFactory;
import org.simantics.objmap.graph.rules.range.FieldAccessor;


public class RelatedElementRuleFactory<Range> implements IFieldRuleFactory<Resource,Range> {

    @Override
    public IBidirectionalMappingRule<Resource, Range> create(ReadGraph g, Annotation _annotation, Field field) throws ResourceNotFoundException, ValidationException, ServiceException {
        RelatedElement annotation = (RelatedElement)_annotation;
        return new MappedElementRule<Resource,Range>(
                new RelatedObjectAccessor(g.getResource(annotation.value())),
                new FieldAccessor<Range,Range>(field)
                );
    }

}