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IONOS Java SDK for Amazon S3 Compatible Cloud Storage
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package com.ionoscloud.s3;

import com.ionoscloud.s3.errors.XmlParserException;
import java.io.Reader;
import java.io.StringReader;
import java.io.StringWriter;
import org.simpleframework.xml.Serializer;
import org.simpleframework.xml.convert.AnnotationStrategy;
import org.simpleframework.xml.core.Persister;
import org.simpleframework.xml.stream.Format;

/** XML marshaller and unmarshaller. */
public class Xml {
  /**
   * This marshal method will traverse the provided object checking for field annotations in order
   * to compose the XML data.
   */
  public static String marshal(Object source) throws XmlParserException {
    try {
      Serializer serializer = new Persister(new AnnotationStrategy(), new Format(0));
      StringWriter writer = new StringWriter();
      serializer.write(source, writer);
      return writer.toString();
    } catch (Exception e) {
      throw new XmlParserException(e);
    }
  }

  /**
   * This unmarshal method will read the contents of the XML document from the provided source and
   * populate the object with the values deserialized.
   */
  public static  T unmarshal(Class type, Reader source) throws XmlParserException {
    try {
      Serializer serializer = new Persister(new AnnotationStrategy());
      return serializer.read(type, source);
    } catch (Exception e) {
      throw new XmlParserException(e);
    }
  }

  /**
   * This unmarshal method will read the contents of the XML document from the provided source and
   * populate the object with the values deserialized.
   */
  public static  T unmarshal(Class type, String source) throws XmlParserException {
    try {
      Serializer serializer = new Persister(new AnnotationStrategy());
      return serializer.read(type, new StringReader(source));
    } catch (Exception e) {
      throw new XmlParserException(e);
    }
  }

  /**
   * This validate method will validate the contents of the XML document against the specified XML
   * class schema.
   */
  public static boolean validate(Class type, String source) throws XmlParserException {
    try {
      Serializer serializer = new Persister(new AnnotationStrategy());
      return serializer.validate(type, source);
    } catch (Exception e) {
      throw new XmlParserException(e);
    }
  }
}