| /* |
| * 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. |
| */ |
| |
| package org.apache.griffin.measure.step.builder |
| |
| /** |
| * for griffin dsl rules, the constant columns might be used during calculation, |
| */ |
| object ConstantColumns { |
| val tmst = "__tmst" |
| val metric = "__metric" |
| val record = "__record" |
| val empty = "__empty" |
| |
| val beginTs = "__begin_ts" |
| val endTs = "__end_ts" |
| |
| val distinct = "__distinct" |
| |
| val rowNumber = "__rn" |
| |
| val columns: List[String] = |
| List[String](tmst, metric, record, empty, beginTs, endTs, distinct, rowNumber) |
| } |