org.mycontroller.standalone.api.jaxrs.mixins.serializers.SensorVariablesSerializer.java Source code

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Here is the source code for org.mycontroller.standalone.api.jaxrs.mixins.serializers.SensorVariablesSerializer.java

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/*
 * Copyright 2015-2016 Jeeva Kandasamy (jkandasa@gmail.com)
 * and other contributors as indicated by the @author tags.
 *
 * 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 org.mycontroller.standalone.api.jaxrs.mixins.serializers;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.mycontroller.standalone.api.jaxrs.json.SensorVariableJson;
import org.mycontroller.standalone.db.ComparatorSensorVariable;
import org.mycontroller.standalone.db.DaoUtils;
import org.mycontroller.standalone.db.tables.SensorVariable;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;

/**
 * @author Jeeva Kandasamy (jkandasa)
 * @since 0.0.2
 */
public class SensorVariablesSerializer extends JsonSerializer<Integer> {

    @Override
    public void serialize(Integer id, JsonGenerator jgen, SerializerProvider provider)
            throws IOException, JsonProcessingException {

        if (id != null) {
            List<SensorVariable> sensorVariables = DaoUtils.getSensorVariableDao().getAllBySensorId(id);

            //Sort by defined order
            Collections.sort(sensorVariables, new ComparatorSensorVariable());

            List<SensorVariableJson> variables = new ArrayList<SensorVariableJson>();
            for (SensorVariable sensorVariable : sensorVariables) {
                variables.add(new SensorVariableJson(sensorVariable));
            }
            jgen.writeObject(variables);
        } else {
            jgen.writeNull();
        }

    }

}