org.baswell.routes.ContentConversionType.java Source code

Introduction

Here is the source code for org.baswell.routes.ContentConversionType.java

Source

/*
 * Copyright 2015 Corey Baswell
 *
 * 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.baswell.routes;

import javax.xml.bind.annotation.XmlRootElement;

import static org.baswell.routes.MIMETypes.*;
import static org.baswell.routes.RoutesMethods.classImplementsInterface;

enum ContentConversionType {
    JSON_SIMPLE(JSON), GSON(JSON), JACKSON(JSON), W3C_NODE(XML), JAXB(XML), JDOM2_DOCUMENT(XML), JDOM2_ELEMENT(
            XML), TO_STRING(null);

    public final String mimeType;

    ContentConversionType(String mimeType) {
        this.mimeType = mimeType;
    }

    static ContentConversionType mapContentConversionType(Class conversionType, MediaType mediaType,
            AvailableLibraries availableLibraries) {
        String returnClassName = conversionType.getCanonicalName();
        String returnTypePackage = conversionType.getPackage().getName();

        if (returnTypePackage.equals("org.json.simple")) {
            return ContentConversionType.JSON_SIMPLE;
        } else if (returnTypePackage.startsWith("org.w3c.dom")) {
            return ContentConversionType.W3C_NODE;
        } else if (returnClassName.equals("org.jdom2.Document")) {
            return ContentConversionType.JDOM2_DOCUMENT;
        } else if (returnClassName.equals("org.jdom2.Element")) {
            return ContentConversionType.JDOM2_ELEMENT;
        } else if (conversionType.getAnnotation(XmlRootElement.class) != null) {
            return ContentConversionType.JAXB;
        } else if ((((mediaType != null) && (mediaType == MediaType.JSON)))
                && availableLibraries.jacksonAvailable()) {
            return ContentConversionType.JACKSON;
        } else if ((((mediaType != null) && (mediaType == MediaType.JSON))) && availableLibraries.gsonAvailable()) {
            return ContentConversionType.GSON;
        } else if (classImplementsInterface(conversionType, CharSequence.class)) {
            return ContentConversionType.TO_STRING;
        } else {
            return null;
        }
    }
}