nl.b3p.viewer.config.services.UpdatableFeatureSource.java Source code

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Here is the source code for nl.b3p.viewer.config.services.UpdatableFeatureSource.java

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/*
 * Copyright (C) 2013 B3Partners B.V.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package nl.b3p.viewer.config.services;

import java.util.Iterator;
import java.util.List;
import nl.b3p.web.WaitPageStatus;
import org.apache.commons.lang3.mutable.MutableBoolean;
import org.apache.commons.lang3.tuple.MutablePair;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 *
 * @author Roy Braam
 */
public abstract class UpdatableFeatureSource extends FeatureSource {
    private static final Log log = LogFactory.getLog(UpdatableFeatureSource.class);

    /**
     * Update this featuresource
     */
    public FeatureSourceUpdateResult update() throws Exception {
        final FeatureSourceUpdateResult result = new FeatureSourceUpdateResult(this);
        try {
            List<SimpleFeatureType> newFeatureTypes = this
                    .createFeatureTypes(result.getWaitPageStatus().subtask("", 80));
            //update and add the new featuretypes.
            for (SimpleFeatureType newFt : newFeatureTypes) {
                MutableBoolean updated = new MutableBoolean();
                this.addOrUpdateFeatureType(newFt.getTypeName(), newFt, updated);

                MutablePair<SimpleFeatureType, UpdateResult.Status> ftResult = result.getFeatureTypeStatus()
                        .get(newFt.getTypeName());

                if (ftResult == null) {
                    result.getFeatureTypeStatus().put(newFt.getTypeName(),
                            new MutablePair(newFt, UpdateResult.Status.NEW));
                } else {
                    if (updated.isTrue()) {
                        log.info("Feature type: " + newFt.getTypeName() + " updated");
                        ftResult.setRight(UpdateResult.Status.UPDATED);
                    } else {
                        ftResult.setRight(UpdateResult.Status.UNMODIFIED);
                    }
                }
            }
            //remove featuretypes when not there
            Iterator<SimpleFeatureType> it = this.getFeatureTypes().iterator();
            while (it.hasNext()) {
                SimpleFeatureType oldFt = it.next();
                boolean stillExists = false;
                for (SimpleFeatureType newFt : newFeatureTypes) {
                    if (newFt.getTypeName().equals(oldFt.getTypeName())) {
                        stillExists = true;
                        break;
                    }
                }
                if (!stillExists) {
                    it.remove();
                }
            }
            result.setStatus(UpdateResult.Status.UPDATED);

        } catch (Exception e) {
            result.failedWithException(e);
        }
        return result;
    }

    /**
     * return a list of featuretypes that are currently present in the FeatureSource
     */
    public abstract List<SimpleFeatureType> createFeatureTypes(WaitPageStatus wps) throws Exception;
}