net.ontopia.topicmaps.rest.v1.topic.TopicController.java Source code

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Here is the source code for net.ontopia.topicmaps.rest.v1.topic.TopicController.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.topic;

import java.util.Collection;
import java.util.HashSet;
import net.ontopia.infoset.core.LocatorIF;
import net.ontopia.infoset.impl.basic.URILocator;
import net.ontopia.topicmaps.core.TMObjectIF;
import net.ontopia.topicmaps.core.TopicIF;
import net.ontopia.topicmaps.core.TopicMapBuilderIF;
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.Occurrence;
import net.ontopia.topicmaps.rest.model.Topic;
import net.ontopia.topicmaps.rest.model.TopicName;
import net.ontopia.topicmaps.rest.v1.TMObjectController;
import net.ontopia.topicmaps.rest.v1.name.TopicNameController;
import net.ontopia.topicmaps.rest.v1.occurrence.OccurrenceController;
import org.apache.commons.collections4.CollectionUtils;

public class TopicController extends AbstractController {

    private TMObjectController tmobject;
    private TopicNameController topicname;
    private OccurrenceController occurrence;

    @Override
    protected void init() {
        tmobject = getController(TMObjectController.class);
        topicname = getController(TopicNameController.class);
        occurrence = getController(OccurrenceController.class);
    }

    // todo: somehow make use of ontopia.resolver?
    public TopicIF resolve(TopicMapIF tm, Topic topic) {
        TMObjectIF resolved = tmobject.resolve(tm, topic.getObjectId(), topic.getItemIdentifiers());
        if (resolved != null) {
            if (resolved instanceof TopicIF) {
                return (TopicIF) resolved;
            } else {
                throw OntopiaRestErrors.MANDATORY_OBJECT_IS_WRONG_TYPE.build("TopicIF", resolved);
            }
        }

        // SI
        if (!CollectionUtils.isEmpty(topic.getSubjectIdentifiers())) {
            for (URILocator si : topic.getSubjectIdentifiers()) {
                TopicIF t = tm.getTopicBySubjectIdentifier(si);
                if (t != null) {
                    return t;
                }
            }
        }

        // SL
        if (!CollectionUtils.isEmpty(topic.getSubjectLocators())) {
            for (URILocator sl : topic.getSubjectLocators()) {
                TopicIF t = tm.getTopicBySubjectLocator(sl);
                if (t != null) {
                    return t;
                }
            }
        }

        throw OntopiaRestErrors.MANDATORY_OBJECT_IS_NULL.build("TopicIF");
    }

    public TopicIF add(TopicMapIF tm, Topic topic) {
        return add(tm, null, topic);
    }

    public TopicIF add(TopicMapIF tm, TopicIF type, Topic topic) {
        TopicMapBuilderIF builder = tm.getBuilder();

        TopicIF result = builder.makeTopic();

        // TopicIF
        setSubjectIdentifiers(result, topic);
        setSubjectLocators(result, topic);
        setTypes(result, topic);

        if (type != null) {
            result.addType(type);
        }

        if (topic.getTopicNames() != null) {
            for (TopicName name : topic.getTopicNames()) {
                topicname.add(tm, result, name);
            }
        }

        if (topic.getOccurrences() != null) {
            for (Occurrence occ : topic.getOccurrences()) {
                occurrence.add(tm, result, occ);
            }
        }

        // todo: roles? can we even?

        // TMObjectIF
        tmobject.setItemIdentifiers(result, topic);

        return result;
    }

    public void remove(TopicMapIF tm, Topic topic) {
        remove(resolve(tm, topic));
    }

    public void remove(TopicIF topic) {
        topic.remove();
    }

    public TopicIF change(TopicMapIF tm, TopicIF result, Topic topic) {
        // TopicIF
        setSubjectIdentifiers(result, topic);
        setSubjectLocators(result, topic);
        setTypes(result, topic);

        // TMObjectIF
        tmobject.setItemIdentifiers(result, topic);

        return result;
    }

    public void setSubjectIdentifiers(TopicIF object, Topic pojo) {
        if (pojo.getSubjectIdentifiers() != null) {
            Collection<LocatorIF> toRemove = CollectionUtils.subtract(object.getSubjectIdentifiers(),
                    pojo.getSubjectIdentifiers());
            for (LocatorIF si : pojo.getSubjectIdentifiers()) {
                object.addSubjectIdentifier(si);
            }
            for (LocatorIF si : toRemove) {
                object.removeSubjectIdentifier(si);
            }
        }
    }

    public void setSubjectLocators(TopicIF object, Topic pojo) {
        if (pojo.getSubjectLocators() != null) {
            Collection<LocatorIF> toRemove = CollectionUtils.subtract(object.getSubjectLocators(),
                    pojo.getSubjectLocators());
            for (LocatorIF sl : pojo.getSubjectLocators()) {
                object.addSubjectLocator(sl);
            }
            for (LocatorIF sl : toRemove) {
                object.removeSubjectLocator(sl);
            }
        }
    }

    public void setTypes(TopicIF object, Topic pojo) {
        if (pojo.getTypes() != null) {
            Collection<TopicIF> newTypes = new HashSet<>(pojo.getTypes().size());
            for (Topic t : pojo.getTypes()) {
                TopicIF resolved = resolve(object.getTopicMap(), t);
                newTypes.add(resolved);
            }

            for (TopicIF remove : CollectionUtils.subtract(object.getTypes(), newTypes)) {
                object.removeType(remove);
            }

            for (TopicIF add : newTypes) {
                object.addType(add);
            }
        }
    }

    public void addType(TopicIF topic, Topic type) {
        topic.addType(resolve(topic.getTopicMap(), type));
    }

    public void removeType(TopicIF topic, Topic type) {
        topic.removeType(resolve(topic.getTopicMap(), type));
    }
}