com.contentful.java.cma.FieldTypeAdapter.java Source code

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Here is the source code for com.contentful.java.cma.FieldTypeAdapter.java

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/*
 * Copyright (C) 2014 Contentful GmbH
 *
 * 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 com.contentful.java.cma;

import com.contentful.java.cma.model.CMAField;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;
import com.google.gson.reflect.TypeToken;
import java.lang.reflect.Type;
import java.util.List;
import java.util.Map;

/**
 * FieldTypeAdapter.
 */
final class FieldTypeAdapter implements JsonSerializer<CMAField> {
    private static final String ATTR_ID = "id";
    private static final String ATTR_NAME = "name";
    private static final String ATTR_TYPE = "type";
    private static final String ATTR_LINK_TYPE = "linkType";
    private static final String ATTR_REQUIRED = "required";
    private static final String ATTR_DISABLED = "disabled";
    private static final String ATTR_VALIDATIONS = "validations";
    private static final String ATTR_ARRAY_ITEMS = "items";

    @Override
    public JsonElement serialize(CMAField field, Type type, JsonSerializationContext context) {
        JsonObject json = new JsonObject();

        add(json, ATTR_ID, field.getId());
        add(json, ATTR_NAME, field.getName());
        add(json, ATTR_TYPE, field.getType());
        add(json, ATTR_LINK_TYPE, field.getLinkType());
        add(json, ATTR_REQUIRED, field.isRequired());
        add(json, ATTR_DISABLED, field.isDisabled());

        List<Map> validations = field.getValidations();
        if (validations != null) {
            json.add(ATTR_VALIDATIONS, context.serialize(validations, new TypeToken<List<Map>>() {
            }.getType()));
        }

        Map arrayItems = field.getArrayItems();
        if (arrayItems != null) {
            json.add(ATTR_ARRAY_ITEMS, context.serialize(arrayItems, Map.class));
        }

        return json;
    }

    private static <T> void add(JsonObject json, String property, T value) {
        if (value != null) {
            if (value instanceof Boolean) {
                if ((Boolean) value) {
                    json.addProperty(property, true);
                }
            } else if (value instanceof String) {
                json.addProperty(property, (String) value);
            } else {
                json.addProperty(property, value.toString());
            }
        }
    }
}