org.onebusaway.nextbus.impl.rest.jackson.BodySerializer.java Source code

Introduction

Here is the source code for org.onebusaway.nextbus.impl.rest.jackson.BodySerializer.java

Source

/**
 * Copyright (C) 2015 Cambridge Systematics
 *
 * 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.onebusaway.nextbus.impl.rest.jackson;

import java.io.IOException;
import java.lang.reflect.Field;
import java.util.List;

import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.text.WordUtils;
import org.onebusaway.nextbus.model.nextbus.Body;
import org.onebusaway.nextbus.model.nextbus.BodyError;
import org.onebusaway.nextbus.model.nextbus.LastTime;

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

public class BodySerializer<T> extends JsonSerializer<Body<T>> {

    @Override
    public void serialize(Body<T> value, JsonGenerator gen, SerializerProvider serializers)
            throws IOException, JsonProcessingException {

        List<T> response = value.getResponse();
        List<BodyError> errors = value.getErrors();
        String copyright = value.getCopyright();
        LastTime lastTime = value.getLastTime();

        gen.writeStartObject();

        // Copyright
        if (StringUtils.isNotBlank(copyright))
            gen.writeStringField("copyright", copyright);

        // Error
        if (errors != null && errors.size() > 0) {
            for (BodyError error : errors)
                error.setContent(error.getContent().replace("\\", ""));
            gen.writeObjectField("Error", errors);
        }

        // Response
        if (response != null && response.size() > 0) {
            JsonRootName jsonRootName = response.get(0).getClass().getAnnotation(JsonRootName.class);
            if (jsonRootName != null)
                gen.writeObjectField(jsonRootName.value(), response);
            else
                gen.writeObjectField("response", response);
        }

        // LastTime
        if (lastTime != null)
            gen.writeObjectField("lastTime", lastTime);

        gen.writeEndObject();
    }

}