org.hornetq.api.core.FilterConstants Maven / Gradle / Ivy

/*
 * Copyright 2009 Red Hat, Inc.
 * Red Hat licenses this file to you under the Apache License, version
 * 2.0 (the "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *    http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied.  See the License for the specific language governing
 * permissions and limitations under the License.
 */

package org.hornetq.api.core;

/**
 * Constants representing pre-defined message attributes that can be referenced in HornetQ core
 * filter expressions.
 *
 * @author Tim Fox
 *
 *
 */
public class FilterConstants
{
   /**
    * Name of the HornetQ UserID header.
    */
   public static final SimpleString HORNETQ_USERID = new SimpleString("HQUserID");
   
   /**
    * Name of the HornetQ Message expiration header.
    */
   public static final SimpleString HORNETQ_EXPIRATION = new SimpleString("HQExpiration");
   
   /**
    * Name of the HornetQ Message durable header.
    */
   public static final SimpleString HORNETQ_DURABLE = new SimpleString("HQDurable");
   
   /**
    * Value for the Durable header when the message is non-durable.
    */
   public static final SimpleString NON_DURABLE = new SimpleString("NON_DURABLE");
   
   /**
    * Value for the Durable header when the message is durable.
    */
   public static final SimpleString DURABLE = new SimpleString("DURABLE");
   
   /**
    * Name of the HornetQ Message timestamp header.
    */
   public static final SimpleString HORNETQ_TIMESTAMP = new SimpleString("HQTimestamp");
   
   /**
    * Name of the HornetQ Message priority header.
    */
   public static final SimpleString HORNETQ_PRIORITY = new SimpleString("HQPriority");
   
   /**
    * Name of the HornetQ Message size header.
    */
   public static final SimpleString HORNETQ_SIZE = new SimpleString("HQSize");
   
   /**
    * All HornetQ headers are prepended by this prefix.
    */
   public static final SimpleString HORNETQ_PREFIX = new SimpleString("HQ");
   
   private FilterConstants()
   {
   }
}