package de.uhilger.um.api;

import de.uhilger.baselink.PersistenceManager;
import de.uhilger.baselink.Record;
import de.uhilger.transit.web.RequestKontext;
import de.uhilger.transit.web.WebKontext;
import static de.uhilger.um.api.UserMgr.UM_DB;
import java.util.Properties;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;

/**
 *
 */
public abstract class Api implements WebKontext, RequestKontext {
  
  /** Zeiger zum Servlet-Kontext dieser Anwendung */
  private ServletContext ctx;
  
  private HttpServletRequest request;  
  
  protected PersistenceManager getDb() {
    return (PersistenceManager) ctx.getAttribute(UM_DB);
  }
  
  protected String getSql(String id) {
    Properties sql = (Properties) ctx.getAttribute(UserMgr.UM_SQL_PROPERTIES);
    return sql.getProperty(id);
  }
  
  protected Record getMapper(String mapperName) {
    Record record = null;
    Object o = getServletContext().getAttribute(mapperName);
    if(o instanceof Record) {
      record = (Record) o;
    }
    return record;
  }
  
  /* ------------- Implementierung WebKontext ------------- */

  @Override
  public ServletContext getServletContext() {
    return ctx;
  }

  @Override
  public void setServletContext(ServletContext servletContext) {
    this.ctx = servletContext;
  }
  
  /* ------------- Implementierung RequestKontext ------------- */

  @Override
  public HttpServletRequest getRequest() {
    return request;
  }

  @Override
  public void setRequest(HttpServletRequest r) {
    this.request = r;
  }
  
}