net.ontopia.topicmaps.rest.v1.TMObjectController.java Source code

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Here is the source code for net.ontopia.topicmaps.rest.v1.TMObjectController.java

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/*
 * #!
 * Ontopia Rest
 * #-
 * Copyright (C) 2001 - 2016 The Ontopia Project
 * #-
 * 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.
 * !#
 */

package net.ontopia.topicmaps.rest.v1;

import java.util.Collection;
import net.ontopia.infoset.core.LocatorIF;
import net.ontopia.infoset.impl.basic.URILocator;
import net.ontopia.topicmaps.core.TMObjectIF;
import net.ontopia.topicmaps.core.TopicMapIF;
import net.ontopia.topicmaps.rest.controller.AbstractController;
import net.ontopia.topicmaps.rest.exceptions.OntopiaRestErrors;
import net.ontopia.topicmaps.rest.model.TMObject;
import org.apache.commons.collections4.CollectionUtils;

public class TMObjectController extends AbstractController {

    @Override
    protected void init() {
        // no-op
    }

    public void setItemIdentifiers(TMObjectIF object, TMObject pojo) {
        if (pojo.getItemIdentifiers() != null) {
            Collection<LocatorIF> toRemove = CollectionUtils.subtract(object.getItemIdentifiers(),
                    pojo.getItemIdentifiers());
            for (LocatorIF ii : pojo.getItemIdentifiers()) {
                object.addItemIdentifier(ii);
            }
            for (LocatorIF ii : toRemove) {
                object.removeItemIdentifier(ii);
            }
        }
    }

    @SuppressWarnings("unchecked")
    public <C extends TMObjectIF> C resolve(TopicMapIF tm, TMObject object, Class<C> expected) {
        if (object == null) {
            throw OntopiaRestErrors.MANDATORY_OBJECT_IS_NULL.build(expected.getSimpleName());
        }

        TMObjectIF o = resolve(tm, object.getObjectId(), object.getItemIdentifiers());
        if (o == null) {
            throw OntopiaRestErrors.MANDATORY_OBJECT_IS_NULL.build(expected.getSimpleName());
        } else {
            if (expected.isAssignableFrom(o.getClass())) {
                return (C) o;
            } else {
                throw OntopiaRestErrors.MANDATORY_OBJECT_IS_WRONG_TYPE.build(expected.getSimpleName(), o);
            }
        }
    }

    public TMObjectIF resolve(TopicMapIF tm, String objectId, Collection<URILocator> itemIdentifiers) {
        if (objectId != null) {
            return tm.getObjectById(objectId);
        }

        if (!CollectionUtils.isEmpty(itemIdentifiers)) {
            for (URILocator ii : itemIdentifiers) {
                TMObjectIF objectByItemIdentifier = tm.getObjectByItemIdentifier(ii);
                if (objectByItemIdentifier != null) {
                    return objectByItemIdentifier;
                }
            }
        }

        return null;
    }
}