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Kripton adapter for Retrofit library

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/*******************************************************************************
 * Copyright 2018 Francesco Benincasa ([email protected])
 * 
 * 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.abubusoft.kripton.retrofit2;

import java.io.IOException;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.Collection;

import com.abubusoft.kripton.BinderContext;

import okhttp3.MediaType;
import okhttp3.RequestBody;
import okio.Buffer;
import retrofit2.Converter;

// TODO: Auto-generated Javadoc
/**
 * The Class KriptonRequestBodyCollectionConverter.
 *
 * @param  the generic type
 */
final class KriptonRequestBodyCollectionConverter implements Converter {
	
	/** The Constant MEDIA_TYPE. */
	private static final MediaType MEDIA_TYPE = MediaType.parse("application/json; charset=UTF-8");
	
	/** The binder context. */
	private BinderContext binderContext;
	
	/** The clazz. */
	private Type clazz;

	/**
	 * Instantiates a new kripton request body collection converter.
	 *
	 * @param binderContext the binder context
	 * @param collectionType the collection type
	 */
	KriptonRequestBodyCollectionConverter(BinderContext binderContext, ParameterizedType collectionType) {
		this.binderContext=binderContext;
		this.clazz=collectionType.getActualTypeArguments()[0];
	}

	/* (non-Javadoc)
	 * @see retrofit2.Converter#convert(java.lang.Object)
	 */
	@SuppressWarnings({ "unchecked", "rawtypes" })
	@Override
	public RequestBody convert(T value) throws IOException {
		Buffer buffer = new Buffer();	
		
		try {	
			binderContext.serializeCollection((Collection) value, (Class)clazz,buffer.outputStream()); 			
			return RequestBody.create(MEDIA_TYPE, buffer.readByteString());
		} catch (Exception e) {			
			e.printStackTrace();
			return null;
		} finally
		{
			buffer.close();
		}
		
		
	}
}