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/**
 * Copyright (c) 2015 itemis AG (http://www.itemis.eu) and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
package org.eclipse.xtext.web.servlet;

import javax.servlet.http.HttpSession;
import org.eclipse.xtend.lib.annotations.Accessors;
import org.eclipse.xtend.lib.annotations.FinalFieldsConstructor;
import org.eclipse.xtext.web.server.ISession;
import org.eclipse.xtext.xbase.lib.Functions.Function0;
import org.eclipse.xtext.xbase.lib.Pure;

/**
 * Provides access to the information stored in a {@link HttpSession}.
 */
@FinalFieldsConstructor
@Accessors
@SuppressWarnings("all")
public class HttpSessionWrapper implements ISession {
  private final HttpSession session;
  
  @Override
  public  T get(final Object key) {
    String _string = key.toString();
    Object _attribute = this.session.getAttribute(_string);
    return ((T) _attribute);
  }
  
  @Override
  public  T get(final Object key, final Function0 factory) {
    synchronized (this.session) {
      final T sessionValue = this.get(key);
      if ((sessionValue != null)) {
        return sessionValue;
      } else {
        final T factoryValue = factory.apply();
        this.put(key, factoryValue);
        return factoryValue;
      }
    }
  }
  
  @Override
  public void put(final Object key, final Object value) {
    String _string = key.toString();
    this.session.setAttribute(_string, value);
  }
  
  @Override
  public void remove(final Object key) {
    String _string = key.toString();
    this.session.removeAttribute(_string);
  }
  
  public HttpSessionWrapper(final HttpSession session) {
    super();
    this.session = session;
  }
  
  @Pure
  public HttpSession getSession() {
    return this.session;
  }
}