uk.os.vt.demo.Schemas.java Source code

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Here is the source code for uk.os.vt.demo.Schemas.java

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/*
 * Copyright (C) 2016 Ordnance Survey
 *
 * 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 uk.os.vt.demo;

import com.google.common.base.Charsets;
import com.google.common.io.Resources;
import java.io.IOException;
import java.net.URL;
import org.json.JSONException;
import org.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import uk.os.vt.Metadata;

public class Schemas {

    private static final Logger LOG = LoggerFactory.getLogger(Schemas.class.getSimpleName());

    public static class CitySchemaV1 {

        private static final Metadata metadata = inflate("city_schema_v1.json");

        public static Metadata get() {
            return metadata;
        }
    }

    public static class OutbreakSchemaV1 {

        private static final Metadata metadata = inflate("outbreak_schema_v1.json");

        public static Metadata get() {
            return metadata;
        }
    }

    private static Metadata inflate(String resource) {
        final URL url = Resources.getResource(resource);
        Metadata inflated;
        try {
            String schemaString = Resources.toString(url, Charsets.UTF_8);
            inflated = new Metadata.Builder().setTileJson(new JSONObject(schemaString)).build();
        } catch (final IOException ex) {
            LOG.error("problem inflating local schema", ex);
            inflated = new Metadata.Builder().build();
        } catch (JSONException je) {
            LOG.error("problem inflating JSON", je);
            inflated = new Metadata.Builder().build();
        }
        return inflated;
    }
}