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Java LDAP API

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/*
  $Id: AttributeValueServletSearchExecutor.java 2885 2014-02-05 21:28:49Z dfisher $

  Copyright (C) 2003-2014 Virginia Tech.
  All rights reserved.

  SEE LICENSE FOR MORE INFORMATION

  Author:  Middleware Services
  Email:   [email protected]
  Version: $Revision: 2885 $
  Updated: $Date: 2014-02-05 16:28:49 -0500 (Wed, 05 Feb 2014) $
*/
package org.ldaptive.servlets;

import java.io.IOException;
import java.io.OutputStream;
import javax.servlet.http.HttpServletResponse;
import org.ldaptive.LdapAttribute;
import org.ldaptive.LdapEntry;
import org.ldaptive.SearchResult;

/**
 * Writes a single attribute value to the HTTP response. Useful for providing a
 * mechanism to download large LDAP attributes, such as certificates and photos.
 * See {@link AbstractServletSearchExecutor}.
 *
 * @author  Middleware Services
 * @version  $Revision: 2885 $ $Date: 2014-02-05 16:28:49 -0500 (Wed, 05 Feb 2014) $
 */
public class AttributeValueServletSearchExecutor
  extends AbstractServletSearchExecutor
{


  /** {@inheritDoc} */
  @Override
  protected void writeResponse(
    final SearchResult result,
    final HttpServletResponse response)
    throws IOException
  {
    final LdapEntry e = result.getEntry();
    if (e != null && e.size() > 0) {
      final LdapAttribute a = e.getAttribute();
      if (a != null && a.size() > 0) {
        if (a.isBinary()) {
          response.setContentType("application/octet-stream");
          response.setHeader(
            "Content-Disposition",
            String.format("attachment; filename=\"%s.bin\"", a.getName()));
        } else {
          response.setContentType("text/plain");
        }

        final OutputStream out = response.getOutputStream();
        out.write(a.getBinaryValue());
        out.flush();
      }
    }
  }
}