OmniSciDB  04ee39c94c
MapDSerializer.java
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1 /*
2  * Copyright 2017 MapD Technologies, Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.mapd.calcite.parser;
18 
19 import org.apache.calcite.rel.RelNode;
21 
26 public class MapDSerializer {
27  public static String toString(final RelNode rel) {
28  if (rel == null) {
29  return null;
30  }
31  final MapDRelJsonWriter planWriter = new MapDRelJsonWriter();
32  rel.explain(planWriter);
33  return planWriter.asString();
34  }
35 }
static String toString(final RelNode rel)