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A collection of domain classes to ease integrations with PagSeguro Api

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/*
 * 2007-2016 [PagSeguro Internet Ltda.]
 *
 * NOTICE OF LICENSE
 *
 * 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.
 *
 * Copyright: 2007-2016 PagSeguro Internet Ltda.
 * Licence: http://www.apache.org/licenses/LICENSE-2.0
 */
package br.com.uol.pagseguro.api.utils;

import java.io.StringReader;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Unmarshaller;
import javax.xml.bind.Unmarshaller.Listener;

import br.com.uol.pagseguro.api.PagSeguro;

/**
 * Utils to parse xml
 *
 * @author PagSeguro Internet Ltda.
 */
public class XMLUtils {

  /**
   * Unmarshal xml
   *
   * @param pagSeguro Pagseguro instance
   * @param clazz     Class to be parsed
   * @param rawXml    Raw xml
   * @param        Object to be returned
   * @return Object parsed
   * @throws JAXBException if a problem occurs
   */
  public static  T unmarshal(PagSeguro pagSeguro, Class clazz, String rawXml) throws JAXBException {
    final JAXBContext jaxbContext = JAXBContext.newInstance(clazz);
    final Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
    unmarshaller.setListener(new JaxBUnmarshalListener(pagSeguro, rawXml));
    return (T) unmarshaller.unmarshal(new StringReader(rawXml));
  }

  /**
   * Listener
   */
  private static class JaxBUnmarshalListener extends Listener {

    private final PagSeguro pagSeguro;

    private final String rawData;

    public JaxBUnmarshalListener(PagSeguro pagSeguro, String rawData) {
      this.pagSeguro = pagSeguro;
      this.rawData = rawData;
    }

    /**
     * After unmarshal
     *
     * @param target Target
     * @param parent parent
     */
    @Override
    public void afterUnmarshal(Object target, Object parent) {
      super.afterUnmarshal(target, parent);
      if (target instanceof XMLUnmarshallListener) {
        ((XMLUnmarshallListener) target).onUnmarshal(pagSeguro, rawData);
      }
    }

  }
}