com.threewks.thundr.action.method.bind.csv.CsvReaderBinaryParameterBinder Maven / Gradle / Ivy

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A thundr module for working with csvs

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/*
 * This file is a component of thundr, a software library from 3wks.
 * Read more: http://3wks.github.io/thundr/
 * Copyright (C) 2014 3wks, 
 *
 * 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.threewks.thundr.action.method.bind.csv;

import java.io.UnsupportedEncodingException;

import com.opencsv.CSVReader;
import com.threewks.thundr.bind.BindException;
import com.threewks.thundr.bind.parameter.BinaryParameterBinder;
import com.threewks.thundr.csv.CsvCommon;
import com.threewks.thundr.http.MultipartFile;
import com.threewks.thundr.introspection.ParameterDescription;

/**
 * This binder knows how to convert multipart binary data into a CsvReader
 */
public class CsvReaderBinaryParameterBinder implements BinaryParameterBinder {
	@Override
	public boolean willBind(ParameterDescription parameterDescription) {
		return parameterDescription.isA(CSVReader.class);
	}

	@Override
	public CSVReader bind(ParameterDescription parameterDescription, MultipartFile data) {
		try {
			return CsvCommon.createCsvReader(data.getData());
		} catch (UnsupportedEncodingException e) {
			throw new BindException(e, "Failed to bind CSVReader: %s", e.getMessage());
		}
	}
}