de.fhg.fokus.odp.portal.datasets.RegistryClient.java Source code

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Here is the source code for de.fhg.fokus.odp.portal.datasets.RegistryClient.java

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/**
 * Copyright (c) 2012, 2013 Fraunhofer Institute FOKUS
 *
 * This file is part of Open Data Platform.
 *
 * Open Data Platform is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
    
 * Open Data Plaform 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 Affero General Public License for more details.
    
 * You should have received a copy of the GNU Affero General Public License
 * along with Open Data Platform.  If not, see <http://www.gnu.org/licenses/agpl-3.0>.
 */

/**
 * 
 */
package de.fhg.fokus.odp.portal.datasets;

import java.io.Serializable;
import java.util.List;
import java.util.Properties;

import javax.annotation.PostConstruct;
import javax.faces.bean.ApplicationScoped;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;

import com.liferay.portal.kernel.util.PropsUtil;

import de.fhg.fokus.odp.registry.ODRClient;
import de.fhg.fokus.odp.registry.model.Category;
import de.fhg.fokus.odp.registry.model.Licence;
import de.fhg.fokus.odp.spi.OpenDataRegistry;

/**
 * @author sim
 * 
 */
@ManagedBean
@ApplicationScoped
public class RegistryClient implements Serializable {

    /**
     * 
     */
    private static final long serialVersionUID = 4779925095121064872L;

    private static final String PROP_NAME_AUTHORIZATION_KEY = "authenticationKey";
    private static final String PROP_NAME_CKAN_URL = "cKANurl";
    private static final String PROP_NAME_DEFAULT_SORT_METADATA = "sorting.default.metadata";

    private ODRClient client;

    // simple caching for differentiate between groups and subgroups
    private List<Category> categories;

    private List<Licence> licences;

    @PostConstruct
    public void init() {
        client = OpenDataRegistry.getClient();
        Properties props = new Properties();
        props.setProperty("ckan.authorization.key", PropsUtil.get(PROP_NAME_AUTHORIZATION_KEY));
        props.setProperty("ckan.url", PropsUtil.get(PROP_NAME_CKAN_URL));
        props.setProperty("sorting.default.metadata", PropsUtil.get(PROP_NAME_DEFAULT_SORT_METADATA));
        client.init(props);
    }

    public ODRClient getInstance() {
        return client;
    }

    public List<Category> getCategories() {
        if (categories == null) {
            categories = client.listCategories();
        }
        return categories;
    }

    public List<Licence> getLicences() {
        if (licences == null) {
            licences = client.listLicenses();
        }
        return licences;
    }
}