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MapDTypeSystem.java
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1 /*
2  * Copyright 2019 OmniSci
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.type.RelDataTypeSystemImpl;
20 import org.apache.calcite.sql.type.SqlTypeName;
21 
22 public class MapDTypeSystem extends RelDataTypeSystemImpl {
23  public MapDTypeSystem() {}
24 
25  @Override
26  public int getMaxPrecision(SqlTypeName typeName) {
27  // Nanoseconds for timestamps
28  return (typeName == SqlTypeName.TIMESTAMP) ? 9 : super.getMaxPrecision(typeName);
29  }
30 
31  @Override
32  public boolean isSchemaCaseSensitive() {
33  return false;
34  }
35 
36  @Override
38  // this makes sure that CHAR literals are translated into VARCHAR literals
39  // mostly to avoid padding / trimming
40  return true;
41  }
42 }
int getMaxPrecision(SqlTypeName typeName)