Examples with DirectOperatorConversion org.apache.calcite.adapter.druid.DirectOperatorConversion used on opensource projects

Example 1 with DirectOperatorConversion

use of org.apache.calcite.adapter.druid.DirectOperatorConversion in project hive by apache.

the class DruidSqlOperatorConverter method getDefaultMap.

public static final Map<SqlOperator, org.apache.calcite.adapter.druid.DruidSqlOperatorConverter> getDefaultMap() {
    if (druidOperatorMap == null) {
        druidOperatorMap = new HashMap<SqlOperator, org.apache.calcite.adapter.druid.DruidSqlOperatorConverter>();
        DruidQuery.DEFAULT_OPERATORS_LIST.stream().forEach(op -> druidOperatorMap.put(op.calciteOperator(), op));
        // Override Hive specific operators
        druidOperatorMap.putAll(Maps.asMap(HiveFloorDate.ALL_FUNCTIONS, (Function<SqlFunction, org.apache.calcite.adapter.druid.DruidSqlOperatorConverter>) input -> new FloorOperatorConversion()));
        druidOperatorMap.putAll(Maps.asMap(HiveExtractDate.ALL_FUNCTIONS, (Function<SqlFunction, org.apache.calcite.adapter.druid.DruidSqlOperatorConverter>) input -> new ExtractOperatorConversion()));
        druidOperatorMap.put(HiveConcat.INSTANCE, new DirectOperatorConversion(HiveConcat.INSTANCE, "concat"));
        druidOperatorMap.put(SqlStdOperatorTable.SUBSTRING, new DruidSqlOperatorConverter.DruidSubstringOperatorConversion());
    }
    return druidOperatorMap;
}