/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF 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.
 */
// this is only syntactically valid DRL, so not ending with purely .drl
package org.drools.unit;

unit AlertingUnit;

rule IncomingEvent
  when
    $e1 : /eventData [ type == "temperature", value >= 30 ]
    $e2 : /eventData [ type == "temperature", value > $e1.value, this after[0s,5s] $e1 ]
  then
    String alertMessage = "Temperature increase: " + ($e2.getValue() - $e1.getValue());
    System.out.println(alertMessage);
    Alert alert = new Alert( "warning", alertMessage );
    alertData.append( alert );
end
