1 package org.apache.helix.alerts;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 public enum ExpressionOperatorType {
23 //each
24 EACH(true),
25 //standard math
26 SUM(false),
27 MULTIPLY(false),
28 SUBTRACT(false),
29 DIVIDE(false),
30 //aggregation types
31 ACCUMULATE(true),
32 DECAY(false),
33 WINDOW(false);
34
35 boolean isBase;
36
37 private ExpressionOperatorType(boolean isBase)
38 {
39 this.isBase = isBase;
40 }
41
42 boolean isBaseOp()
43 {
44 return isBase;
45 }
46 }