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package de.akquinet.jbosscc.guttenbase.export;

import de.akquinet.jbosscc.guttenbase.connector.GuttenBaseException;
import org.apache.commons.io.IOUtils;

import javax.xml.transform.Result;
import javax.xml.transform.Source;
import java.io.*;
import java.nio.charset.StandardCharsets;
import java.sql.SQLXML;

/**
 * Since XML data may be quite big. we do not load them into memory completely,
 * but read them in chunks and write the data to the output stream in a loop.
 *
 * 
 * © 2012-2034 akquinet tech@spree
 * 
 *
 * @author M. Dahm
 */
public class ExportDumpSqlXML extends AbstractExportDumpObject implements SQLXML {
  private static final long serialVersionUID = 1L;

  public ExportDumpSqlXML() {
    this(null);
  }

  public ExportDumpSqlXML(final InputStream inputStream) {
    super(inputStream);
  }

  @Override
  public Reader getCharacterStream() {
    return new InputStreamReader(getBinaryStream());
  }

  @Override
  public OutputStream setBinaryStream() {
    throw new UnsupportedOperationException();
  }

  @Override
  public Writer setCharacterStream() {
    throw new UnsupportedOperationException();

  }

  @Override
  public String getString() {
    try {
      return IOUtils.toString(getBinaryStream(), StandardCharsets.UTF_8);
    } catch (final IOException e) {
      throw new GuttenBaseException("getString", e);
    }
  }

  @Override
  public void setString(final String value) {
    throw new UnsupportedOperationException();
  }

  @Override
  public  T getSource(final Class sourceClass) {
    throw new UnsupportedOperationException();
  }

  @Override
  public  T setResult(final Class resultClass) {
    throw new UnsupportedOperationException();
  }
}